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RGA for Windows User Manual

1. 00 02 10 00 00 00 Interval 00 01 00 Multi Trend has two display modes The results may be plotted on either a Logarithmic y axis with a selectable number of decades or on a Linear y axis showing results in the range 0 00 to 9 99 The results from each enabled channel are plotted in the colour shown on the Key panel The results from the channels are plotted as they are scanned If the time interval selected is shorter than the time required to complete the scan then the results will be plotted as soon as they become available The time axis can be labelled with either the real time or the time elapsed from starting the mode The time axis will be marked with a tick when a period of 10 times the time interval has elapsed At this time if there is sufficient space the tick will be labelled with either the elapsed or real time The results plotted scroll from left to right with the newest results appearing RGA for Windows Manual SP104001 Rev 2 50 Page 134 at the left of the display to emulate a chart recorder display This mode enables you to individually set the mass in any channel for partial pressure measurement Alternatively you may select either total pressure TOT or one of the built in analogue inputs You can assign a channel to either a fixed range or set the channel to autorange and select the detector to be used This mode has a high and low alarm facility for each channel If the partial pressure measured
2. LI A 63 A Rios Contd Iolo e ls IL 161 MMICLOVISION PU a A des Seated eS 7 Miscellaneous Errors ccccccccesssscceeesssecesssseeceesseeceeesseecessseecceesseeceessseeees 206 Mode Select Wild Wii 76 Multi trend urinaria 70 134 Multi Trend uc canario ae aa 133 Multiple xen ce o n R eS Nene eee igeteonceee 88 Multiple anclado es riel ett pr A ed eee rere 136 146 Multiplier Detector ooooocccnocccnonccnoncnconcnonorncnoncnnanonnnns 59 101 102 105 106 Multiplier CM corra leer cea Steen 101 106 107 Multiplier Tripsin adas 107 MUltiPer warming artritis 89 M tli Trend aeea ek ose ied Hae a ea ss 134 O Overrun Erro torta lt adas 200 P Partial pressure trip tcs 96 97 98 Parts of RGA Tor Wind WS susncitamittas tabaco 63 PASSWOLG REEERE TET AEEA TE EEE E 93 94 PC to Control Unit ConnectiON ooooccnnoooccnoonnnnnononnnncnonnnnnonnnnnnconnnnnncnnanancconnns 15 Peak JUMP ss cnn thigh ace headin nd anaes ada dansa 67 69 70 Peak JUMp rico nina iaa ais 128 129 GS A O abileessebesove be worsel 132 POLS sss ei ih aiid i ich aiid 39 40 41 42 43 Preferentes IS IAE Radel eee 89 92 Pressure units ccccecescccceessceceesscecceesssecceesseeccessecceessseceeesssecceessseceeteceeensees 90 Print Company Lopo ios eect etek a e ees 196 PO e e et eect beer bee E ert bees peer eer a peat rere re 111 Probe Basi aa aks 141 Q Quadripole sion aie etwas Ri 65 Quick Guide Windows B 1l oooonnococcnooccccnnonccccnonannnononnnnco
3. To start storing either click on the Disk button or select File Disk Store from the menu bar to bring up the Disk Store dialog box as shown below Select the drive to store to by clicking on the Drives dropdown list box then click on the required drive A directory can be selected from the Directories dropdown list box Type in a new filename or select an existing filename in the File Name box Typing or selecting an existing filename will cause a warning to be generated when Ok is pressed as the existing file will be overwritten Note that a different default file extension is generated for each mode it is not required to use it but keeping to the default makes it easier to select the correct files when the data is recalled To enter the number of scans to be stored type in or select with the spin buttons a number in the range 1 to 32000 RGA for Windows Manual SP104001 Rev 2 50 Page 109 Disk Store Number OF Scans E IX Store Hundredths of seconds Cancel Timed disk store Comment File Name Directories recall wbg gt spectra 5 dde 5 macros It can be very useful to attach some descriptive text to the data file for instance details of the circumstances under which the data was obtained The user may attached up to 32 000 characters of text to the data file being stored To do this position the cursor in the Comment box by positioning the mouse pointer in the box and clicking then type
4. 1 Switch off both the PC and the Satellite control unit and disconnect the power supply leads 2 Unplug the RS232 cable from the PC 3 Carefully remove the D type connector shell This may involve prizing apart the two halves in the case of a plastic shell or removing the two screws in the case of a metallised shell 4 Disconnect the wire connected to pin 1 of the 9 way D socket pin 8 in the case of a 25 way D socket Carefully cut back this wire to ensure it cannot short on any of the other pins the cable braid or the metal shell 5 Connect pins 1 9 and 4 together 9 way or connect pins 2 8 and 20 together 25 way Note that pin 4 9 way pin 20 25 way already has a wire connected keep this connection 6 Re assemble the D type connector 7 Re comnect the serial cable and then the mains leads 8 Switch on the control unit and run up the PC 9 Run RGA for Windows using RGA Reset RGA for Windows Manual SP104001 Rev 2 50 Page 55 Remember the above should only be necessary if you are upgrading from earlier versions of RGA for Windows New instruments supplied with version 2 00 or later versions of software should have a modified RS232 cable 3 29 2 Preserving settings The installation procedure has been improved from previous versions so that if a copy of RGA for Windows is already on the computer in the same directory that you choose to install the new version to it will not overwrite any settings f
5. RGA for Windows Manual SP104001 Rev 2 50 Page 170 enabled MODE ANALOGUE 15 32 3 1 0 0 0 9 1 Example 2 This macro contains a single line and will do the following switch to the bar chart mode set the starting mass to 15 set the mass span to 50 set the accuracy to 3 enable total pressure switch the grid on switch the cursor off set the detector to faraday start scanning with a gain range of E 09 enable autoranging switch logarithmic mode off MODE BARCHART 15 50 3 1 1 0 0 9 1 0 Example 3 This macro contains a single line which will switch from the current head to head 1 HEAD 1 Example 4 The following macro begins by configuring the first six channels for the multi trend mode The first line sets channel 1 to enabled the mass to 5 the gain range to 5 the detector is set to faraday auto ranging is disabled low alarm is off and the high alarm is off The next 5 lines configure channels 2 to 6 The macro then switches the instrument to the bar chart mode with the first mass set to 15amu the span set to 50 amu the accuracy set to 3 total pressure is on the grid enabled the cursor is off the faraday detector is selected the gain range is set to 6 autoranging is disabled the linear y axis is selected The macro then does a disk store to a file named C SPECTRA BARDATA WBG storing 10 scans with timed disk store disabled storing each scan and storing the time with hundredths of seconds After waiting for 1
6. Peak Jump File View Filament Multiplier Settings Mode Help Total Pressure 0 9E 06 1 60 Ti 6 71 417 2 48 1 29 8 71 Eo E0 E038 Eo E08 Jo 6 v7 5 La SE a E E o 2 5 a o 2 a Channel Exit the Peak Jump mode _ Peak Jump has two display modes The results may be plotted on either a Logarithmic y axis with a selectable number of decades or on a linear y axis showing the results in the range 0 00 to 9 99 When Logarithmic mode is selected autorange is automatically enabled for all channels This allows partial pressures to be measured and stored over the full range of the selected detector while only the decades of immediate interest are displayed This mode enables you to individually set the mass in any channel for partial pressure measurement Alternatively you may select either total pressure TOT or one of the built in analogue inputs You can assign a channel to either a fixed range or set the channel into autorange and select the detector to be used This mode also has a high and low alarm capability for each channel The alarm condition is triggered if the magnitude of a peak exceeds the high alarm setting or falls below the low alarm setting The peak is plotted in red if its magnitude falls inside the alarm range an audio tone will sound if the audio alarm is enabled and an output is set true on the relevant pin of the AUX I O connector on the control
7. s main use as the name implies is to locate real leaks in your vacuum chamber In general this is done by taking a bottle of probe gas usually helium and tuning the RGA to that probe gas The probe gas is then sprayed over the vacuum chamber especially near flanges feedthroughs and welds until an increase in the peak height is observed To assist when you are out of sight of the screen an audio tone can be selected For really large chambers an optional remote headset is available RGA for Windows Head 1 Leak Check y 2 File View Filament Multiplier Settings Mode Help Sais 4 llosa jes le y E 2 Ey g E o 5 D o 2 o Mass 4 Offset 0 00 lEnable disable the autorange feature _ The second use of Leak Check is as a general purpose monitor of single peak height with either very fast response or very stable readings The peak height is displayed both as a trend to give an historical record and as a vertical bar clearly showing the current value RGA for Windows Manual SP104001 Rev 2 50 Page 140 This mode does not scan across the width of a peak and report the maximum value but instead it sits at one point on the peak This point is specified by the mass offset parameter and may be adjusted to ensure the centre of the peak is being measured For normal leak checking the offset may be set to Zero The accuracy parameter allows readings to be taken at up to 156 times per second accurac
8. 1 2 3 Hydrogen 2 1 3 Helium 4 Methane 16 15 86 14 16 13 9 Ammonia 17 16 80 15 7 14 2 Water 18 17 21 16 1 Neon 20 22 10 Ethylene 28 27 64 26 63 25 12 Carbon Monoxide 28 12 5 16 2 29 1 Nitrogen 28 14 5 29 1 Ethane 28 27 34 30 24 26 23 Methanol 31 32 67 29 65 28 6 Ethanol 31 45 34 27 24 29 23 Oxygen 32 16 11 Hydrogen Chloride 36 38 32 35 17 Argon 40 20 13 N Butane 43 29 38 27 28 41 28 Acetone 43 58 27 27 8 42 7 Carbon Dioxide 44 16 9 28 8 12 7 Iso Propyl Alcohol 45 43 17 27 16 29 10 Diffusion Pump Oil 45 59 94 43 68 41 39 Rotary Pump Oil 57 43 73 55 73 41 33 Sulphur Dioxide 64 48 49 32 10 16 5 Benzene 78 52 19 51 19 50 16 Trichloroethylene 95 130 90 32 85 60 65 Polyphenylether 446 77 79 51 28 39 10 Diffusion Pump Oil RGA for Windows Manual SP104001 Rev 2 50 Page 233 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 234 Appendix D Relative Ionisation Sensitivity Substance Formula Relative lonisation Sensitivity Acetone CH2 2CO 3 6 Air 1 0 Ammonia NH3 1 3 Argon Ar 1 2 Benzene C6H6 5 9 Benzonic Acid C4H5COOH 5 5 Bromine Br 3 6 Butane C4H10 4 8 Carbon Dioxide CO2 1 4 Carbon Monoxide CO 1 06 Carbon Tetrachloride CCl4 6 0 Chlorobenzene C6H5Cl 7 0 Chloroethane C2HSCl 4 0 Chloroform CHCI3 4 8 Chloromethane CH3Cl 3 1 Cyclohexylene C6H1
9. If this does not work think about any changes you have made to the system new software you may have installed or files you may have moved The file spectra mdb file which is the database file used by the library in the bar chart mode is the most common one to cause problems This file is in the Spectra directory In the RGA4Win ini file there 1s a section called Library There is a line which calls the database file This line must agree with where the spectra mdb file actually is If none of the about helps solve the problem you may need to re install the software 9 6 Miscellaneous Errors 9 6 1 System resources Error messages You have run out of Microsoft Windows system resources Before you attempt to retry close as many other applications as possible Windows has a limited number of resources If you are running multiple programmes or the multi headed version of RGA for Windows you may run out of these resources The only solution is to close down as many unnamed programmes as possible if you wish to continue However once Windows runs low on resources strange effects will start to occur and it is generally recommended that you close Windows down before re starting it 9 6 2 Printing error Error message Error while printing Check that the printer is switched on connected to your PC has paper loaded and is installed for Windows before trying to print again RGA for Windows has been unable to send a prin
10. MODE SELECT ANALOGUE BAR CHART LEAK CHECK MULTI TREND PEAK JUMP or FAST SCAN pl pn are the optional mode specific parameters SELECT MODE COMMAND Application Topic Item Parameter Variable RGA4WIN RGA Mode Select none set to mode select screen Analogue First mass 1 to max mass mass span Mass span 8 16 32 64 Accuracy 0 1 2 3 4 5 Total 0 disabled 1 enabled Grid 0 disabled 1 enabled Cursor 0 disabled 1 enabled Detector gain 0 faraday 2 mult x100 3 mult x1000 Range 5 to 14 E 05 to E 14 Autorange 0 disabled 1 enabled Bar Chart First mass 1 to max mass mass span Mass span 10 20 50 100 150 200 300 RGA for Windows Manual SP104001 Rev 2 50 Page 180 RGA4WIN RGA RGA4WIN RGA RGA4WIN RGA Bar Chart Leak Check Leak Check Multi Trend Peak Jump Accuracy Total Grid Cursor Detector gain Range Autorange InLog LogLowERang e LogHighERan ge Probe mass Mass offset Accuracy Audio Grid Cursor Detector gain Range Autorange Continuous trace Accuracy Grid Cursor Detector gain Continuous trace Interval Label trace Time relative Time vertical label Total InLog LogLowERang e LogHighERan ge Accuracy Grid 0 1 2 3 4 5 0 disabled 1 enabled 0 disabled 1 enabled 0 disabled 1 enabled 0 faraday 2 mult x100 3 mult x1000 5 to 14 E 05 to E 14 0 disabled 1 enabled O Linear y axis 1 Log y axis 5 to 14 E 05 to E 14 5 to 14 E 05 to E 14 1 to max mass 0
11. Off Peak Common Gas Height Hydrogen H2 Air Nitrogen Carbon Monoxide This mode carries out a basic RGA check and as such should be used regularly for system monitoring All too often people forget about the quality of their vacuum until something goes wrong With vacuum scan you can regularly check the vacuum quality and print the results for hard copy without spending any time on the system yourself The mass range to be scanned may be adjusted from 1 to the maximum mass available on your system The magnitude range is set in terms of the instrument gain ranges If the ranges scanned are set so that the start range is E 6 and the end range is E 7 the required number of masses with magnitudes in the range 9 90x10 down to 0 7x107 will be listed When the scan has finished and the results have been displayed some additional functions are available Firstly the mass numbers and range of the peaks listed may be transferred to the peak jump multi trend and fast scan modes Secondly you have the option to ask for a list of suggested common gasses for the masses present The results of the last scan are stored along with a date and time stamp It is possible at any time to view the results of the previous vacuum scan until the mode is run again At this time the previous results are overwritten with the new scan results RGA for Windows Manual SP104001 Rev 2 50 Page 67 4 5 2 Analogue This is not intended to be used as an an
12. SP104001 Rev 2 50 Page 25 1 Check that the four large 40 pin ICs IC1 IC7 IC13 and IC16 are fitted this will ensure you have a four port card 2 Check that IC5 IC9 and IC11 are fitted this will ensure your card is configured for RS232 if you want to use RS422 refer to RS422 and RS485 3 Check that jumper J9 is fitted between pins 3 and 4 this will set the addresses as follows Port 1 to address 0280 to 0287 Port 2 to address 0288 to 028F Port 3 to address 0290 to 0297 Port 4 to address 0298 to 029F if you need to use other addresses refer to section Setting the physical address 4 Check that jumper J13 is fitted between pins 1 and 2 this puts all the ports on the same IRQ 5 Check that jumper J8 is fitted between pins 5 and 6 this puts all the ports onto IRQ5 RGA for Windows requires one IRQ to itself to operate correctly IRQ5 must not be used by any other devices If you cannot use IRQ5 because you have other devices connected to it refer to Satellite Comms Card Step 2 Installing the comms card in the PC and connect the control units Note the position of the connectors for the four ports on the comms card Port 1 PLG 5 mounted on the PCB closest to the edge connector Port 2 PLG 4 mounted on the PCB furthest from the edge connector Port 3 fitted to a flying lead connected to PLG 6 on the PCB Port 4 fitted to a flying lead connected to PLG 2 on the PCB The comms card should be installed in accordance with the
13. To do this click on the Peaks To Find dropdown list box and then click on the required number To set the accuracy code click on the Accuracy box and then click on the required value from the dropdown list Accuracy is fully explained in section Error Reference source not found Click on the Start button to begin scanning if the filaments are off you will be prompted to switch a filament on Click on the View Previous button to see the results of the last vacuum scan The View Previous button will be disabled button text shown in grey if Vacuum Scan has not been run since performing a power up reset Clicking the Exit button will close the Vacuum Scan Setup dialog box without the vacuum scan being run Running After Start has been selected in the Vacuum Scan Setup dialog box the Vacuum Scan Results dialog box will be displayed and the instrument will scan the requested masses displaying any that exceed 7 and are less than 99 9 of full scale on the current range When the requested number of peaks to find have been located and the scan on the current range is completed the scan stops A typical results window is shown below RGA for Windows Manual SP104001 Rev 2 50 Page 152 Vacuum Scan Stored on Jul 18 95 at 22 32 27 Accuracy 3 Multiplier Off Peak Common Gas Height Note that by default peaks exceeding full scale are not included in the analysis If no peaks are found that fulfil the above criteria then a w
14. and low mass resolution controls Then repeat the procedure and keep repeating until a satisfactory set up has been achieved Do not expect to get the set up perfect but aim to minimise errors throughout the mass range Aim to get the mass alignment within 0 3 amu and the peak width at 5 of the peak height between 0 8 and 1 2 amu 9 8 8 Removing RGA for Windows Use the Uninstall program provided to remove RGA for Windows from your PC To run Uninstall you will need the original RGA for Windows distribution disks 9 8 9 Getting help If you require any further help or advice about RGA for Windows please contact your local agent To assist us in dealing with your enquiry promptly please quote the serial numbers of the RF head analyser and control unit along with the information listed in the About dialog box accessed from the Help About menu If you have a question or problem which seems to relate to the mass RGA for Windows Manual SP104001 Rev 2 50 Page 215 spectrometer hardware you may be asked to send printouts of the diagnostics screen and analogue mass spectra These printouts can provide us with valuable information which will enable us to respond promptly to your enquiry If your enquiry relates to the software and how it functions on your PC you should provide as much of the following information as possible Make and model of your PC Make and model of your graphics card The amount of memory fitted in your
15. configuration warning box will then be displayed and you will be prompted to run the Configure program Click on the Ok button 3 24 Spectra Program Group Multi The Spectra program group as shown below contains seventeen program items each is briefly described below Win95 The items in the Spectra folder are described below they are the same as the program items in the Spectra program group in Windows 3 1 and later systems To display the Spectra folder click on the Start button on the Taskbar and select Programs Spectra from the start menu Lala lala Lala lala Lali lala Lali lala Lala fade FAIRA Lal flab Wh lub RGA Multiples RGA Multiplex Group 1 Group 2 Group 1 Reset Group 2 Reset Reset 7 gt u Configure Ports RGA Help DDE Test Uninstall Download a 2 3 4 Recall Recall Help DDE Examples Macro Examples RGA for Windows Manual SP104001 Rev 2 50 Page 47 RGA Multiplex This item is used to start RGA for Windows using the Multiplex facility and the previous session parameters RGA Multiplex Reset This item is used to start RGA for Windows using the Multiplex facility and the default parameters Group 1 This item is used to start the first group of up to four heads using the settings from the previous session Group Reset This item is used to start the first group of up to four heads using the default settings Group 2 This item is used to start the second group of heads heads 5 to 8 using the se
16. 1 On 3 Standard 5 1 second Analogue 0 Off 1 On 3 Standard RGA for Windows Manual SP104001 Rev 2 50 Page 237 First Mass 14 Mass 14 Mass Span 16 16 amu Range 5 E 05 Auto Range 0 Off Channel Parameters Channel 1 2 3 4 5 6 7 8 9 10 11 12 Multiplier Off Off Off Off Off Off Off Off Off Off Off Off On Off On On On On On On Off Off Off Off Off Off Mass 2 4 12 14 15 16 17 18 28 32 44 55 Range E S ES E 5 ES E 5 E 5 ES E 5 ES E 5 E 3 E 5 Auto Off Off Off Off Off Off Off Off Off Off Off Off Range High Off Off Off Off Off Off Off Off Off Off Off Off Alarm Low Off Off Off Off Off Off Off Off Off Off Off Off Alarm RGA for Windows Manual SP104001 Rev 2 50 Page 238 Appendix F INI File Structure This help topic was previously released as the document RGA for Windows INI File Structure LP210007 Rev 1 00 1 Oct 1999 This document is provided as a reference for Spectra personnel Whilst we are quite happy for customers to read it they make changes to INI files at their own peril Please only change INI file settings if instructed to do so by a Spectra engineer These are the ini file sections CONFIGURATION SYSTEM RVC DISK STORE USER DISK HEADER PRINTER LIBRARY ANALOGUE BAR CHART LEAK CHECK MULTI TREND PEAK JUMP CHANNEL DEGAS MULTIPLIER CALIBRATE VACUUM SCAN VALVE C
17. 92 as 87 Helicopter O e a e a 5 6 87 I COB os 63 A O Re 53 161 193 194 239 246 Installation ui eel Shido NA 11 13 16 21 44 45 Installing Multi Headed RGA for WindowS csccesceesceeseeeseeeteeeneeneeesees 21 Installing hate eu 16 Installing Single Headed RGA for Windows ooocooocccocccocooonononcnononnncnnnonccnnnos 13 Instrument Architecture ccccccccccsseccessssccceesseecesssseccesssseceessseeceesseeeceeaees 13 IO UCA ii A 5 j E E O EEE O TE E AET 39 40 hemise A aa a era 176 177 178 L Labelitrac oia EE E TT 138 149 Teak Check inna nnn Anais 71 TEE TE e e datos ed ri AA 139 140 ibrary o ae eari enn aE N S 120 121 122 123 124 125 E E 88 89 Lo IN A O O OE 93 Logarithmic AXi Sanii n a E R TR 120 M Macro Commands cccccccccsssssccessscceesssecceesseeccesssecceesseeccecsseeceesseeeeeesaees 164 IMAGE OS cai 163 164 Making Back Up Disks coma hel oe minh wale idee oer 11 Masai eC AN de leh ed a ei 135 136 145 146 147 A E e EES 141 MaSS Scan n a a A eke a Bae Eai 85 MISMA IS 82 83 MASS SPatl ccssccessccssscessteeeeneeesseecesceceeecssaeeeeseeesseeeseeceeeeeseseeeeeeensaees 142 143 Mas Pad ia 119 120 Mass Spectral Interpretation oooonoccnnnccnonccnoncnnononcnonncnnnnonononcononcono nono nnninss 225 Mass Spectrometer iii cis 207 RGA for Windows Manual SP104001 Rev 2 50 Page 254 MAXIMUM PTESSUTE co ooooooccnonccnononononncnoncnnoncnnononcnnnncnnnncnonrnnannncnn a r ranae 73
18. AMANUALS RGAAWIN DRAWINGS CO2CO WBG 1 View Window Help ELLELE Scan 1of1 26 July 1995 21 23 58 ba w x o 2 E b o l D 0 Fa E m 40 a Mass a m u Characteristic spectrum of carbon monoxide and carbon dioxide outgassed by filaments and ion source Solve by switching quadrupole into degas remembering to degas filaments of other equipment such as ion gauges RGA for Windows Manual SP104001 Rev 2 50 Page 230 Clean high vacuum Recall C MANUALS RGA4WIN DRAWINGS CLEAN WBG 1 File Goto View Window Help Sean 1 of1 26July 1995 21 23 58 Pay w x pis 5 2 E o El a o E E o a Mass a m u Characteristic spectrum of a clean high vacuum Note the relatively high level of hydrogen which is desorbed from the metal walls of the vacuum system Mass 28 due to carbon monoxide will always be present the extent depending on how many filaments and their types are in operation RGA for Windows Manual SP104001 Rev 2 50 Page 231 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 232 Appendix C Cracking Pattern Table The following table lists some of the more common gases encountered in residual gas analysis along with their cracking patterns The minor peaks are shown with their approximate intensity Height relative to the base peak that it is assumed equals 100 COMPONENT Base Peak MINOR PEAKS Height
19. C drive 1 Insert the CD in Drive D 2 From Program Manager Main group run up File Manager by double clicking on its icon 3 You need to have two Windows displayed use Window New Window and Window Tile Horizontally to achieve this 4 Click on the D drive icon so that the two files on the CD are displayed 4 Click on the file RGA4Win HLP so that it is highlighted and drag it to the directory C SPECTRA 5 Now Open the RGA4Win HLP file by selecting File Run in the Program Manager in the file box type C SPECTRA RGA4Win HLP and press ENTER You should substitute drive letters and directories as appropriate for your system You can added a Program Item to the Spectra or any other Program Group to open RGA4Win HLP consult your Windows documentation or on line help if you do not know how to do this Windows 95 and Windows NT 4 To run from disk 1 Insert the CD in Drive D 2 Click on the Start button on the Taskbar then select Run 3 In the Open box type D RGA4Win HLP then click OK or press ENTER To copy to your hard drive We will assume you have a folder named SPECTRA on your c drive RGA for Windows Manual SP104001 Rev 2 50 Page 2 1 Insert the CD in Drive D 2 Open Windows Explorer by clicking on the Start button on the Taskbar then select Programs Windows Explorer 3 Click on the D drive icon then select the file RGA4Win HLP and drag it to the C SPECTRA folder 4 Now Open the Microvision Pl
20. Colour SHFFFFOO QUAD CALIBRATION Section Total Calibration Factor 1 0 RF TUNING Section Entries 1 Current 1 lt N gt RF analyser Head followed by tuning parameters RVC Section Rotary Pump 1 Turbo Pump 2 Maintenance Text 3 Gate Valve 4 Hi Valve 5 Hi Valve Text 6 Lo Valve 7 Lo Valve Text 8 Var Valve 9 Var Valve Text 10 Atmos Pump 11 Atmos Text 12 Atmos Valve 13 Filament Text 14 Main Pump Text 15 Hi Interlock 16 Lo Interlock 17 Window Size left top width height Windows StateWindow On Top 1 Manual Valve 0 Pump Timeout Time 300 Background Colour S amp HFFFFFF amp Schematic RVCSCHEM DAT Title Remote Vacuum Controller SIGNALS Section in DIGIO INI No Of Signals 0 Port Address n 0 Bit Mask n 0 RGA for Windows Manual SP104001 Rev 2 50 Page 244 SYSTEM Section Save Settings Plot One Decimal Place Show Icon Bar Show Setting Bar Show Help Bar Continuous Trace Grid Cursor Password Locked Y Label On Multiplier Warning Monitor Comm Noise Disconnect Satellite Last Scanning Mode Partial Trip On Total Trip On Total Trip Erange Trip Filament On Application Title Satellite Analogue Output Enabled PC Analogue Output Enabled Satellite Alarm Output Enabled OO O In SPECTRA DDM In SPECTRA DDM RGA for Windows PC Alarm Output Enabled 0 1 Default to 1 if DiglO Card fitted Audio Alarm Enabled 0 Windows State 0 determines window layout Wind
21. Cracking Pattern Table scssscssssssssesseees 233 Appendix D Relative lonisation Sensitivity sseeseee 235 Appendix E Default Settings ccsscssscsssscssssssssscsoseeees 237 Appendix F INI File Structurre csscssscsssssssscsssessseosseees 239 Appendix G Document Data oooonoonnconnnonnnonnconnnconaconncononoonaoss 251 MINOX A ON 252 RGA for Windows Manual SP104001 Rev 2 50 Page vii This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page viii Errata and addenda This page is deliberately left blank Errata and Addenda RGA for Windows Manual SP104001 Rev 2 50 Page a This page is deliberately left blank Errata and Addenda RGA for Windows Manual SP104001 Rev 2 50 Page b Section 1 RGA for Windows Help Manual This paper manual has been generated from the RGA for Windows Help Manual reference LP105010 Rev 2 20 which is a paperless manual run on the Windows Help Viewer Some of the formating has been changed but the text has not been altered for this reason the section below makes little sense 1 1 Welcome Document Title RGA for Windows Help Manual Document Reference LP105010 Current Issue Rev 2 20 Issue Date 14 June 2000 As part of our continuous product improvement policy we are always pleased to receive your comments and suggestions about how we should develop our product range We would welcome your fee
22. Ini File All of the settings for RGA for Windows are saved in a file called RGA4WIN INI for single head operation or in RGA4WINx INI where x head number for multi head operation These files should not be edited directly When a Power Up Reset is performed these files will be written back to factory values and all user set information will be lost It is advisable to keep a recent copy of any ini files in case this happens More information on ini files is given in the Customisation section of this manual 5 9 RF Failed Trip This applies to Microvision and Microvision Plus control units only The RF fail input to the Microvision will be asserted whenever the RF generator goes out of tune This will occur if the Microvision is not tune for the analyser it is connected to or more likely if the Microvision is not connected to an analyser The RF failed condition is displayed on the alert bar with the message The RF has Failed Whenever the RF failed condition occurs the RF generator is prevented from operating and causing any damage to the electronics When the trip is acknowledged by clicking on the Ok button on the alert bar RGA for Windows Manual SP104001 Rev 2 50 Page 161 the instrument will attempt to scan normally once more This normal operating mode can be overridden by adding the following line to the CONFIGURATION section in the RGA4WINn INI file RF Protect On 0 This line should only be used by a pro
23. PAULO cerco ai ace tesbeste stot sade reseeateates N N A N N 141 AUULOTAN ii A 84 AUtOTan Ge ics a a e eh Sie a tite ee 115 116 135 145 146 B Back round uocinannia ina 125 126 127 128 Background and Library Error ooooooocnonccnonccononconnnononncnon conan cnnoncncan crono nncnnnss 204 Baiona dret Ent locas Ne eae ore are de eee AR 59 Bar chart 2022 2 a do AR A ee alr AR Re 68 Batt Chain ais aa 79 117 118 119 buttons cui 76 C AS AAA dees tes ess tae eens gis Sensis dees sees 102 103 104 106 Channel Commands sisusse oiy oar e gue E a EE E S 185 Channelenabledanrionexenee tc 135 145 Clipboards tcc ds 94 Colour trace ssh Sc Se hs Se es 139 149 Command tt a ls ici acd oes 178 179 COMMS tec Ae i eh A A eh ek oie Ba ee e et te tell 53 54 COMMS Cai didas ocn 15 40 42 43 45 computer Puccini scada els csi 13 14 15 38 Computer System Requirements oooocoocnooncnonccnoncncononononncnoncononcncono conan ncnonnnos 14 Configuring Multi RGA for Windows oocccoocccooncnonnnconcncnonncnonccnonononnnnancnnnos 49 RGA for Windows Manual SP104001 Rev 2 50 Page 252 Configuring RGA for WindOWS cc ccccscceeseeeseeeseceseeesseeeeeeeseeenseeeaeees 18 CGoOntinuous trace ii E AASE 138 141 149 Control Unit x2 cht eaeehiesi ine Hick add 13 15 44 A A cust dele hee wed iene Sh dst ah 2 Sec be Ba eho 64 65 Cracking Pattern Table oooonnocononconoooccoonncnonncnonccnonnnconnnononncnnnncnoncnconnnnnns 233 CTS Error
24. PC The amount of free disk space on your hard disk s Printouts of the following files AUTOEXEC BAT CONFIG SYS WIN INI SYSTEM INI RGA4WIN ini 9 8 10 Resetting After Maintenance Some maintenance procedures carried out on analysers will result in changes to the mass alignment and resolution settings Since these settings are stored on the PC which almost certainly will not have been returned for repair it will be necessary to reset the resolution and alignment settings The settings are written on the Shipment Report Checklist which will have been sent with the equipment in the Technical Information section To check alter the settings Connect up the instrument as usual then start RGA for Windows using a Power Up Reset see Reset Select the analogue mode check the pressure is low enough to operate the quadrupole then switch a filament on Select the correct RF Head and Analyser combination then select RF Tuning Check that the four parameters on the screen match those on the Shipment Report Adjust the parameters to match the shipment report as necessary RGA for Windows Manual SP104001 Rev 2 50 Page 216 Repeat this for all RF Analyser combinations Finally you can check the performance of the quadrupole by operating in the analogue mode and comparing the spectra you obtain with those on the printouts attached to the Shipment Report Run the instrument for two hours before making any changes RGA for Win
25. PC manufacturers instructions for the installation of plug in cards Note that RGA for Windows Manual SP104001 Rev 2 50 Page 26 you will need an ISA XT slot for the card and a free adjacent slot Now connect the control units to the comms card using the cables supplied You can switch on the RGA control units and then power up your PC Step 3 This is where the installation under Windows 95 differs from the installation on other Windows systems There is no software available for configuring comms cards under Windows 95 All the configuration can be done via the Windows95 control panel Step 3 describes configuring one comm port For each card step 3 must be repeated 4 times once for each port Add New 1 Select the Hardware icon from Control Panel 2 At the first page in the Add New Hardware Wizard Add New Hardware W izard This wizard will help you quickly install a new piece of hardware To begin installing your new hardware click Next Cancel click on the Next gt button RGA for Windows Manual SP104001 Rev 2 50 Page 27 3 At the second page select No to the question Do you want Windows to search for your new hardware Add New Hardware Wizard If your hardware is already installed you should have Windows detect it When Windows detects new hardware it automatically determines the current settings for the device and installs the correct driver Do you w
26. Press the Ok button Step 5 Assigning logical names to the ports on the comms card To assign the logical names to each port click on the Ports item in the Spectra folder A warning box will be displayed asking you if you want to install our own comms driver click on the Yes button See INI File Settings for more information about the comms driver click on the 1 Comms Card Default button this was the way we configured the comms card in step 1 then click on the Ok button You will then be prompted to re start Windows click on the Yes button to do this Step 5 Configuring RGA for Windows so that each head number is allocated to a port by its logical name RGA for Windows Manual SP104001 Rev 2 50 Page 36 Click on the Configure item in the Spectra folder the Configure window will be displayed Select the number of heads by clicking on the Number of Heads connected dropdown list box then click on the appropriate number in the dropdown list Then select the number of comms cards fitted in your PC by clicking on the Number of Comms Cards fitted dropdown list box then click on the number in the list Then click on the Ok button You should have now successfully installed Multi RGA for Windows Further information about the installation process can be found in the rest of this section 3 15 Multi Headed Detailed Installation This section of the manual gives more detailed information on the installation of multi heade
27. To install Multi RGA for Windows 1 Runup Windows 2 Insert the program Disk 1 in drive A or B if you prefer 3 Chose the Run option from the Windows Program Manager File select menu 4 Type a install or b install if you are using the drive B The Spectra Install window will be displayed The install options RGA for Windows Download Recall DDE Examples Macro Examples will be displayed You can select the product options by checking the appropriate products We strongly recommend you to install all the product options You may also change the default directory where RGA for Windows will be installed For the purposes of this manual we will assume you use the default C SPECTRA directory 5 Click on the Install button to begin the installation process You will be prompted to insert program Disk 2 and Disk 3 at the appropriate time RGA for Windows Manual SP104001 Rev 2 50 Page 23 6 RGA for Windows will be installed on your hard disk and a program group called SPECTRA will be created and the Multi RGA for Windows program items added 7 When the installation process has been completed a warning box will be displayed telling you to install Share exe and Override com click on the Ok button The configuration warning box will then be displayed and you will be prompted to run the Configure program Click on the Ok button Before running RGA for Windows you need to install SHARE EXE if you are using Windows 3 1 If you
28. Trend mode and triggers timed disk store for 5 scans INTERVAL 0 1 TOPIC RGA4WIN RGA Mode MULTI TREND TOPIC RGA4WIN MULTI TREND DISKFILENAME C SPECTRA DDE DDE2 WMT DISKSCANS 5 RGA for Windows Manual SP104001 Rev 2 50 Page 189 DISKSTORETYPE 1 DISKINTERVAL 5 DISKSTOREATEND 1 DISKSTART EXIT HA Soren A A Example FILAMENT TXT Filament DDE Turns on the filament and reads its status waits 10 seconds and reads its status again The first read of the filament status returns Changing The second read should return On in the DDE Status line of the DDETEST EXE window INTERVAL 0 1 TOPIC RGA4WIN RGA READFILAMENT FILAMENT 1 READFILAMENT DELAY 10 READFILAMENT EXIT Example LOCK TXT Lock DDE Switches mode to Analogue and locks the program so that settings may not be changed with the mouse and keyboard Send DDE commands at 0 1 second intervals and talk on RGA4WIN RGA topic INTERVAL 0 1 TOPIC RGA4WIN RGA Change mode to analogue First Mass 50 Mass Zoom 16 R Accuracy 3 Total 1 ON Grid 0 OFF Cursor 0 OFF Detector Gain 0 Faraday Range 6 AutoRange 0 OFF RGA for Windows Manual SP104001 Rev 2 50 Page 190 MODE ANALOGUE 50 16 3 1 0 0 0 6 0 Send commands now at 30 second intervals INTERVAL 30 Lock RGA For Windows from user control LOCKTASK 1 Back to 0 1 second command interval a
29. alignment and resolution Under normal operating conditions you should not need to adjust these settings from the factory pre set default values for a particular RF head and RGA for Windows Manual SP104001 Rev 2 50 Page 143 analyser combination To open the RF Tuning dialog box select Setting RF tuning from the menu bar see RF Tuning for more details 5 2 6 Fast Scan The following topics are specific to the Fast Scan mode Fast Scan Overview Fast Scan Channel Features Fast Scan Specific Features The following general topics apply to the Fast Scan mode Disk Store Printing Multiplier Detector Accuracy Total Pressure Measurement Total Pressure Microvision Plus Grid Cursor Fast Scan Overview Fast Scan as the name implies is a mode designed to acquire data as fast as possible Up to twelve channels are scanned in sequence each channel has a set of parameters which may be set independently The results are displayed as a scrolling trend The accuracy setting found in other modes is abandoned and replaced with Dwell and Settle settings for each channel giving the user maximum control over the scan speed These settings are adjusted to give the required trade off between stability of the readings and scan speed In other modes an amplifier zero routine is carried out at the end of each scan To reduce the scan time in Fast Scan the zero is done when you enter the mode and thereafter only when the user selects amplifie
30. are displayed on the setting bar These determine which decades are displayed They can also be set from the Peak Jump Settings dialog box To change the To or From range click on the appropriate box then click on the required range in the dropdown list The From range must be less than or equal to the To range In log mode data will be acquired over all ranges available for the selected detector regardless of the displayed decades 5 2 3 Multi Trend The following topics are specific to the Multi Trend mode Mutli Trend Overview Multi Trend Channel Features Alarms in Multi Trend Specific Multi Trend Features The following general topics apply to the Multi Trend mode Disk Store Printing Multiplier Detector Accuracy Total Pressure Measurement Total Pressure Microvision Plus Grid Cursor RGA for Windows Manual SP104001 Rev 2 50 Page 133 Mutli Trend Overview A typical Multi trend display is shown below Multi Trend is a channel based scanning mode Twelve channels are available which are scanned in sequence Each of the channels has a set of parameters which may be set independently It is similar to the Peak Jump mode in operation but the results are displayed as a scrolling trend of pressure versus time RGA for Windows No name 1 Multi Trend olx Eile View Filament Multiplier Settings Mode Hek E E 1609 2 10 10 og a 1 28 OFF 18 10 35 3 05E 11 40 0 00E 11 55 OFF
31. as follows Port 1 to address 0280 to 0287 Port 2 to address 0288 to 028F Port 3 to address 0290 to 0297 Port 4 to address 0298 to 029F if you need to use other addresses refer to Satellite Comms Card 4 Check that jumper J13 is fitted between pins 1 and 2 this puts all the ports on the same IRQ Check that jumper J8 is fitted between pins 5 and 6 this puts all the ports onto IRQ5 RGA for Windows requires one IRQ to itself to operate correctly IRQ5 must not be used by any other devices If you cannot use IRQ5 because you have other devices connected to it refer to Satellite Comms Card Step 2 Installing the comms card in the PC and connect the control units Note the position of the connectors for the four ports on the comms card Port 1 PLG 5 mounted on the PCB closest to the edge connector Port 2 PLG 4 mounted on the PCB furthest from the edge connector Port3 fitted to a flying lead connected to PLG 6 on the PCB Port 4 fitted to a flying lead connected to PLG 2 on the PCB The comms card should be installed in accordance with the PC RGA for Windows Manual SP104001 Rev 2 50 Page 22 manufacturer s instructions for the installation of plug in cards Note that you will need an ISA XT slot for the card and a free adjacent slot Now connect the control units to the comms card using the cables supplied You can switch on the RGA control units and then power up your PC Step 3 Installing the software on the PC
32. be grayed out While it is allowed to subtract a background stored in Linear mode from a Logarithmic scan and vice versa it is not recommended as this will lead to a reduction in accuracy To subtract a background first enable background display select the desired background then either click on the background subtract button on the setting bar or select Mode Background Subtract from the menu bar Backgrounds may be subtracted either with or without a background displayed RGA for Windows Manual SP104001 Rev 2 50 Page 127 Note It is not possible to subtract library spectra from the active spectra When a background is being subtracted from the active spectra the x axis label will change from Mass a m u to Live Background Name 5 2 2 Peak Jump Peak Jump The following topics are specific to the Peak Jump mode Peak Jump Overview Peak Jump Channel Features Alarms Peak Jump Features The following general topics apply to the Peak Jump mode Disk Store Printing Multiplier Detector Accuracy Total Pressure Measurement Total Pressure Microvision Plus Grid Cursor RF Select Set All Peak Jump Overview Peak Jump is a channel based scanning mode A typical Peak Jump display is shown below Twelve channels are available which are scanned in sequence Each of the channels has a set of parameters which may be set independently RGA for Windows Manual SP104001 Rev 2 50 Page 128 RGA for Windows Head 1
33. be un checked and then the File Preferences Satellite Analogue Output menu item may be checked The Analogue Output Module has its own manual reference LP102020 please refer to this for more information 5 4 Valve Actuator The Valve Actuator Unit is a self contained accessory unit that enables solenoids actuators valves etc to be controlled via the Aux I O ports of Vacscans Satellites and Microvisions In the Peak Jump mode there is the facility to set up high and low alarm levels for each channel The alarm signals that are sent out by the control unit are unbuffered TTL levels via the Aux I O connector As such these signals are only suitable for driving TTL gates or very low power relays The Valve Actuator Unit buffers and amplifies these signals to drive power solenoids There are 12 identical channels corresponding to the 12 peak jump channels excepting Vacscan which has only 6 channels In the case of Vacscan the first 6 channels are active channels 7 to 12 are inactive The unit is designed so that users may in conjunction with the relevant sections of this manual set up their own process control monitoring system hardware The Valve Actuator has no effect on the RGA for Windows software The Valve Actuator has its own manual reference LP102007 please refer to this for more information RGA for Windows Manual SP104001 Rev 2 50 Page 154 5 5 Digital I O Card The Aux I O port on the RGA control u
34. box The From range must be less than or equal to the To range In Log mode data will be acquired over all ranges available for the selected detector regardless of the displayed decades 5 2 7 Vacuum Scan The vacuum scan mode is designed to determine the major peaks in your vacuum chamber display them and on request offer suggestions for the probable names of the gasses The list of common gasses is contained in the COMGAS TXT file and may be customised using a text editor e g Notepad exe In addition the results from the previous vacuum scan may be reviewed and the peaks found can be loaded into the Peak Jump and Multi Trend modes for more detailed measurement To enter Vacuum scan click on the Vacuum Scan button on the setting bar or select Mode Vacuum Scan from the menu bar The Vacuum Scan Setup dialog box will be displayed as shown below RGA for Windows Manual SP104001 Rev 2 50 Page 150 RGA for Windows Head 1 Mode Select File View Filament Multiplier Mode Help Vacuum Scan Masses Scanned Ranges Scanned First Mass i Y Start Range 5 Last Mass 200 End Range On Multiptier Gain Peaks To Find Accuracy 3 E Run the Vacuum Scan Vacuum scan setup Vacuum scan mode by default scans the whole mass range of the instrument over a wide dynamic range If you know for example that only peaks below mass 50 in the ranges E 06 to E 08 are of interes
35. controlled via DDE the Lock Task feature may be used It is similar to the Password lock system except no password is required and only RGA for Windows will be locked MOVEFORM Lt w h 1 Window Left pixel co ordinate t Window Top pixel co ordinate w Window Width in pixels h Window Height in pixels RGA for Windows can be moved and sized using this command PRINT This command has the same effect as pressing the Print button on the Icon bar READFILAMENT This command causes the current filament status to be written into the RGA Topic DDEDATA item which can then be read The possible states are Changing Filaments Off FilamentX Trip Emission FilamentX Failed FilamentX Trip External FilamentX Trip Total FilamentX Trip Partial FialmentX On Where X 1 or 2 RGA for Windows Manual SP104001 Rev 2 50 Page 186 READMODE This command causes the current mode to be written into the RGA Topic DDEDATA item which can then be read The possible states are Changing MODE SELECT ANALOGUE LEAK CHECK BAR CHART PEAK JUMP MULTI TREND FAST SCAN SETOFFSET n Topic Analogue n 0 255 Topic BAR CHART n First Mass Last Mass This sets the index for the PeakData item in Bar Chart and Analogue modes 7 10 Valve Controller Commands VALVE n n 0 no valves open n 1 valve 1 open n 2 valve 2 open n 16 valve 16 open This sets the valve specified by n open and it will remain open until another comm
36. fall again After checking the total pressure reading you should change the Accuracy code back to the standard Accuracy 3 and the mass span back to 50 amu before proceeding RGA for Windows Manual SP104001 Rev 2 50 Page 83 4 12 2 Using the autorange feature Although you are getting a total pressure reading you might not see any partial pressures plotted on the display or if you are they may be very small This is because the instrument is set to its least sensitive range E 5 The current setting of the instrument is displayed in the Range dropdown list box situated on the setting bar The autorange feature can be used to ensure that a suitable detection range is selected The range selected will ensure that the largest peak detected is on scale with a mantissa in the range of 0 70 to 9 99 To switch on the autorange feature click the Auto range button At the end of each scan the range will be adjusted up or down until the largest peak is on scale When the range has stabilised at a particular setting click the Auto range button to turn off the autorange feature This will hold the current range setting irrespective of any further fluctuations in partial pressures 4 12 3 Checking the multiplier If you did not purchase the dual detector option you should skip this section Before switching on the multiplier check that the current detector range shown in the range drop down list box is in the range of E 7 to E 11 If it is
37. from the gauge manufacturers documentation Details of the analogue inputs can be found in the Microvision Plus manual 5 1 14 Accuracy The accuracy code allows a trade off to be made between overall scan speed and stability of results It operates by modifying the sampling time at each discrete point in the mass scan The highest accuracy code is 5 which gives the slowest scan speed with the most stable results the lowest is 0 which gives the fastest scan speed with less stable results Although the actual scan speed of the instrument is always altered when this parameter is changed you may not detect a change in the scan speed from the speed of the scan dot If this occurs it will be due to the speed of your PC which is unable to process and plot the incoming data fast enough The accuracy may be changed either by clicking the Accuracy dropdown list box on the setting bar and picking a new accuracy or selecting Settings Accuracy from the menu bar to display the mode Settings dialog box Click on Accuracy and then click on the required accuracy code RGA for Windows Manual SP104001 Rev 2 50 Page 114 5 1 15 Range The range parameter is the exponent of the partial pressure measured The range setting determines the level of amplification applied to the signal The amplification will be the sum of the detector gain and electronic gain of the instrument It is variable in the range E 05 E 11 when the faraday detector is select
38. ii A acia 206 9 6 2 RN 206 9 6 3 Drive path error viii 207 9 64 Incorrect disk s sc2 cesseteressegerepsieteres a N ieee 207 9 6 5 Comment too long oooococooccnoncncononcnonncconcnnonononnnncnnnncnoncno 207 Dil Mass Spector e eer etae 207 9 7 1 Diagnostic fallure oooooccnnocononcccoooncnonncnonccnoncncnrncnnnncnononos 207 O77 2s Fled filaments mirta 208 9 7 3 Loss of spectra when using multiplier 209 9 8 GRE TUM gies els eh ees es ce 210 9 8 1 Feature compatibility ooooonocnnnnccnooccnonccnoncncnnnncnnnncnoncnos 210 9 8 2 Why we need RF head SettiMgS ooooocnooccnonncnoncnconcncnnnnns 211 9 8 3 Factory default SettiOgS oooocnnonccnonccnonncnoncnonnrncnnnncnononos 211 9 8 4 Selecting the RF head Analyser oooooccnooccconcccoonncoonccoononos 212 9 8 5 Adding RF head Analyser combinations ee 212 9 8 6 Adding RF head Analyser combinations cee 213 9 8 7 RF head tuning occcooccnonncconnnnonnnononncnnnncnonnnnononcnnn nono nnnnancnos 214 9 8 8 Removing RGA for Windows oooccooccnonncconcnononncnonccnnonos 215 9 8 9 Getting help scc cas ata ned Avie eA AaS 215 9 8 10 Resetting After Maintenance ooooocnoonononncnononcnnnncnonncioncnos 216 Appendix A Glossar Y sesicssscesssconessevesesondasosenveevonevtsdeosestovenensctess 219 RGA for Windows Manual SP104001 Rev 2 50 Page vi Appendix B Mass Spectral Interpretation oooomommmsmoo 225 Appendix C
39. in Linear mode may be used in a Logarithmic mode and vice versa subject to the limitations described above The background is accessed by pressing the Background button on the setting bar or by selecting Mode Background from the menu bar When a background is active the display is split into two see the graphic below with the live spectra on top and the background and its controls below Above the background spectrum a label giving the background name is displayed RGA for Windows Manual SP104001 Rev 2 50 Page 125 RGA for Windows Head 1 Bar Chart 2 File View Filament Multiplier Settings Mode Help Total Pressure 1 6E 05 Mass a m u Background 1 H Pressure Tort 10 15 za Select deselect the Background feature Tr I The following is a description of the function of the background buttons Previous Press this button to move to the previous background entry Next Press this button to move to the next background entry Store Used to save the current spectrum to a background The default background name can be used or a user defined name may be entered In addition an optional comment may be entered at this time When store is selected the entire scan is transferred into the background If all peaks have a peak height of 0 00 then the background will not be stored Delete Used to delete the current background entry A confirmation is requested but once this is accepted RGA for
40. in the required text The comment will be retrieved when the file is viewed in Recall Data may be stored either at the end of each scan the default setting or after a user set time has elapsed To store in timed mode click on the Timed disk store check box the Store at end of scan check box and Interval mm ss box will now be displayed Enter an Interval time in the range 1 second to 60 mins 59 secs When timed storage is selected data may either RGA for Windows Manual SP104001 Rev 2 50 Page 110 be stored immediately the selected time has elapsed or at the end of the scan following the end of the time interval To store at the end of the scan click on the Store at end of scan check box The time and date is stored with each scan The time may be stored either to 1 00 or 0 05 seconds resolution depending on the setting of the Store Hundredths of seconds check box To store to a resolution of 0 05secs check the Store Hundredths of seconds check box by clicking on it In addition under DDE control data storage may be configured started and may also be triggered on a scan by scan basis with a DDE command When disk storage starts the status of the store will be displayed on a yellow disk storage status bar If the mode is exited or the Terminate Disk Store button is pressed before the store is complete the file will be closed with the data already saved being kept When the selected number of scans have been stored the disk storage
41. lower case All the parameters are separated by a semicolon All parameters must be RGA for Windows Manual SP104001 Rev 2 50 Page 164 specified in each command in the macro file Comments may be inserted anywhere in the macro text file even in the middle of commands A comment is text enclosed in curly brackets used to explain and clarify the macro 6 2 1 Mode Select Command This command will switch the instrument into one of its main operating modes and set the parameters associated with that mode Command MODE Mode Parameter Variable ANALOGUE First Mass 1 to max mass mass span Mass Span 8 16 32 64 Accuracy 0 1 2 3 4 5 Total 0 disabled 1 enabled Grid 0 off 1 on Cursor 0 off 1 on Detector Gain O faraday 2 mult x100 3 mult x1000 Range 5 to 14 E 05 to E 14 Autorange O off 1 on BARCHART First Mass 1 to max mass mass span Mass Zoom 10 20 50 100 150 200 300 Accuracy 0 1 2 3 4 5 Total 0 disabled 1 enabled Grid 0 off 1 on Cursor 0 off 1 on Detector Gain O faraday 2 mult x100 3 mult x1000 Range 5 to 14 E 05 to E 14 Autorange O off l on In Log 0 Linear x axis 1 Log x axis Log Low Range 5 14 E 05 to E 14 and must be less than see note 1 Log High Range value Log High Range 5 14 E 05 to E 14 and must be greater than see note 1 Log Low Range value MULTITREND Accuracy 0 1 2 3 4 5 Grid 0 off 1 on Cursor 0 off 1 o0n Global 0 disabled 1 enabled Multiplier Continuous 0 Disabled 1 Enabled Tr
42. match the actual RF Analyser This may cause mass alignment and resolution errors Use the AF Select item in the Settings menu to correct just click on the Ok button The Confirmation dialog box will be removed and the RGA for Windows software will be loaded from your hard disk 4 7 1 Using the help bar Point the mouse at the exit button Note that the text in the yellow help bar at the bottom of the screen changes to Exit the program This indicates the function that will be performed if you click on the exit button The function of any button may be determined in this way RGA for Windows Manual SP104001 Rev 2 50 Page 75 Now point at the buttons and use the help bar to locate the Run the Diagnostics button 4 8 Mode Select Window Once RGA for Windows has started and the serial communications link to the RGA control unit has been established the Mode Select Window will be displayed This is your starting point to RGA for Windows from where you can enter the various operationg modes In the graphic below click on the various buttons for more information Ra RGA for Windows Mode Select OF x File View Filament Multiplier Settings Mode Help Exit Button Click on the Exit button in the Mode Select window to close RGA for Windows In the operating modes clicking Exit will return you to the Mode Select window Also see Exit Disk Store Button Click on the Disk Store button to start storing data to disk
43. not manually increase the range to E 7 To do this click the Range dropdown list box then click the Range E 7 item CAUTION Before you switch on the multiplier you should ensure that the total pressure reading is below the limits specified Click the Multiplier on off button to turn on the multiplier You should notice that the scan dot moves faster when the multiplier is on You can click the Multiplier on off button a few times to switch the multiplier off and on so that the difference in scan speed can be seen The size of the peaks reported with the multiplier on should be very roughly the same as those measured using the faraday detector There will always be some difference between the results obtained using the different detection methods but they are likely to be reduced when you calibrate the multiplier If the peaks disappear when you turn on the multiplier you should refer to RGA for Windows Manual SP104001 Rev 2 50 Page 84 the Trouble shooting section 4 13 Changing the Mass Scan Two controls are provided to enable different masses to be scanned These are the First mass and the Mass span button groups which appear on the setting bar You will have already used the Mass span buttons Click the button in the First mass button group Now the x axis label starts at 1 and ends at 51 instead of 0 and 50 as before The masses now being scanned are masses 2 51 inclusive You should note that the first mass indicated
44. off 1 on Setting this to 0 disables the multiplier off when filaments off interlock This is used to measure the level of multiplier noise We recommend this is always set to 1 Label text on the y axis of charts Library Y Peak Height Label text on the y axis of Label library charts Mass Label Mass a m u Label for x axis of charts Baud Rate 9600 2400 9600 19200 RS232 baud rate setting Ignore CTS 0 0 off l on Manual 0 1 monochrome display Colours This may be useful for printing out screen dumps RGA for Windows Manual SP104001 Rev 2 50 Page 194 We use it for printing the screens in this manual SYSTEM Section Field Default Monitor 1 Comm Noise Boot mi RVC Section Boot mi Options 0 disabled 1 enabled Options Window title on top of page max 50 characters PRINTER Section Field Default Title Remote Vacuum Controller Field Default Logo On 1 Print Peak amp HFF0000 Colour Logo Colour amp HFFFF00 Company Leda Mass Name Company Arial Font Portrait Size 20 Landscape 32 Size Boot ini Options Whether the company logo is printed Peak colour printed on printouts blue Logo colour printed on printouts cyan Text printed at top of printouts If Leda Mass then logo will be printed graphically Font used for company text This could be a special truetype font in the style of a companies logo Size of font used when prin
45. on the x axis is not being scanned To change the first mass setting by a large amount click on the Set first mass button which is in the middle of the First mass button group This will open the Bar Chart Settings dialog box with the insertion point set to the First Mass text box You can now enter a new first mass from the keyboard Enter the value 20 into the first mass text box and then click the Ok button or press the Enter key The dialog box will be closed and the first mass displayed on the x axis will be set to 19 mass 20 will be the first mass scanned The number of masses included in the scan can be varied by selecting one of a fixed number of options The total number of options available will depend on the maximum mass range capability of the analyser you have purchased The mass spans available on a 300 amu analyser are 10 20 50 100 200 and 300 Spans larger than the capability of your analyser are not available To select a different span use the Mass span button group This completes the guided tour If you have worked through this section and the system is functioning as described then you should have no problems experimenting with the other scanning modes and features A detailed description of all the features available is given in section 4 RGA for Windows Manual SP104001 Rev 2 50 Page 85 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 86 Section 5 Reference
46. one the RGA control unit has been connected Note that it is only necessary to have the control unit connected to the PC to run RGA for Windows you do not have to have the RF power supply or RGA for Windows Manual SP104001 Rev 2 50 Page 15 analyser connected at this stage In the case of a Microvision or Microvision Plus the unit does not need to be connected to the analyser However if you enter a scanning mode the message The Microvision is not connected to the analyser or the RF has failed will be displayed If you are connecting control units to your computer using an RS422 or RS485 serial interface please refer to RS422 and RS485 3 8 Installing Share exe If you are installing RGA for Windows to run under Windows 3 1 you will need to install SHARE If you are installing RGA for Windows on later versions of Windows such as Windows for Workgroups 3 11 and Windows 95 you will not need to install SHARE so you may skip this section The SHARE program is supplied with DOS and allows different programs to use common files in an orderly fashion RGA for Windows will not run without this command as the Microsoft Access Database Engine is used by RGA for Windows for the spectra library The library data files are stored in an Access format You should find SHARE EXE in your DOS sub directory To install the share command add the following line to your autoexec bat file in a part of the file that is used when booting Windows
47. or EPROM V2 32 Microvision application microv img v1 22 RGA for Windows Manual SP104001 Rev 2 50 Page 9 Microvision core V1 00 or D1 12b Microvision Plus application mvplus img V1 50 Microvision Plus core D1 12b Note that HPQ 2 firmware is the same as Microvision Plus and Vac Check firmware is the same as Microvision Note 2 Version 2 21 requires version 2 20 Satellite code Note 3 Version 2 10 requires version 2 10 code in the control unit Satellite Multiquad or Vacscan Vacscan Plus 2 4 1 New in Version 2 40 Two main changes have necessitated the release of version 2 40 RGA for Windows The first concerns the way data is transmitted from the RGA control unit to the PC running RGA for Windows In Peak Jump and Trend modes the gain range is now sent with each reading This makes no difference to the normal operation of RGA for Windows but it does mean upgrading the software in your control unit if you are up grading from an earlier version of RGA for Windows The second reason for the new release is the inclusion of some additional features that utilise the improved hardware in the Microvision Plus The total pressure measurement can now be obtained from an external total pressure gauge via one of the Microvision Plus analogue inputs The software allows for suitable scaling factor to be applied The Microvision Plus allows various potentials used in the ion source to be altered V2 40 now supports this The zeroi
48. pressure measurement not the ratio For example Channel 1 is set to mass 28 and is measuring 6 x 10 7 mBar Channel 2 is set to mass 32 and is measuring 1 5 x 10 mbar In the Channel 1 settings dialog box Ratio with channel is checked and in the dropdown list channel 2 mass 32 is selected RGA for Windows Manual SP104001 Rev 2 50 Page 137 The channel identifier for channel one will be red and yellow and the cursor value displayed in the Key panel next to channel 1 will be 4x 10 from 6 x 107 1 5 x 10 Time interval The time between plotting the scans on the screen may be set anywhere between one second and 30 minutes in one second increments To increment or decrement the interval click the up and down buttons next to the interval button on the setting bar To set the interval either click the Interval button or select Settings Interval from the menu bar Elapsed time Every 10 times the time interval the trend will be marked with a tick on the time axis and if there is sufficient space the time is printed You may elect to show this time either as the time elapsed from the start of the mode or as real time taken from your PC s clock If the real time clock is incorrect select Control Panel in Windows main group then select Time Date and set the correct time and date Win95 Click on the Start button on the Taskbar then select Settings Control Panel Double click on the Time Date icon in the Control Pan
49. program This is used in multi headed systems where all the headed are started automatically The Windows Layout switch This is used to determine how the Spectra windows are laid out on the screen n is a number in the range 0 to 3 where the numbers have the following meaning 0 cascade 1 quartile 2 split horizontal 3 split vertical Number of heads in a group RGA for Windows Manual SP104001 Rev 2 50 Page 197 Qn Number in the group which determines the position on the screen Mn The Multiplexer switch Used in Multi Headed systems to start RGA for Windows using the Multiplexer n will be in the range 1 to 8 and determines which head is started when the RGA Multiplex program item is double clicked The RGA for Windows user is only ever likely to have to add the O switch to the Command Line and then only in special circumstances RGA for Windows Manual SP104001 Rev 2 50 Page 198 Section 9 Troubleshooting For trouble shooting the mass spectrometer hardware please refer to the instrument manual Refer to CTS Error Message Overrun Error Software Installation and Configuration Background and Library Error Fatal Error 53 Miscellaneous Errors Mass Spectrometer 9 1 CTS Error Message When RGA for Windows is installed on certain PCs a problem with the serial comms may be encountered resulting in the following error message Connection to the Satellite has been lost CTS Restart RGA f
50. provide the ability to set most of the parameters and select the main functions There are some more advanced features which can only be set from the menu bar Most of the controls on the icon and setting bars and in the channel buttons are interactive allowing you to quickly change a parameter or select a function In some cases the controls will cause a dialog box to be displayed allowing a series of parameters to be set using standard windows controls A description of each dialog box is included in the reference section of this manual The basic operation of the interactive controls are explained below RGA for Windows Manual SP104001 Rev 2 50 Page 64 On Off Buttons These are controls which have two states When you click on the button the state of the parameter is toggled and the button will indicate the new state of the parameter On off buttons can appear on the icon or the setting bar where the current state is indicated by the simulated raised or depressed state of the button When the button is raised the function is off and when depressed it is on The leak check audio on off and bar chart autorange buttons use this type of control Push button These buttons depress while you click but will then spring out and activate the required function straight away Parameter increment and decrement buttons operate in this way Some push buttons have an auto repeat feature which enables the button to be repeatedly pressed while the mouse b
51. s A ica 144 5 2 7 Vacu m CAM iia 150 5 3 Analogue Output Module ooooonoccnnonocononcnonncoonncnoncnnononcnnnncnononns 154 54 Valve Act On e ee artistes 154 AS Digital VO Cardin das 155 Dl Installine the Catd iia ds 155 5 5 2 Configuring alarm OUtputS oooonocccnonncnonccnoncncnnnncnonacinnnnos 155 5 5 3 Port configuratiOM ooonooccnonncnonncnoncnconnncnnnncnoncnnoncnconcncnnnnns 156 334 DIGO NS ati 158 5 6 DIAgNostiCS ccccccecccsesscessseeeseeeeseeceseeeeeseeenseeesseeenseeenseeeseeeseneenes 159 5 7 Analog Input ici eee eee eae eee 161 D8 O Files secss0 a ae vasccead eesti A E E fee 161 5 9 RE Failed Truc dass 161 Section 6 MACK OS s5isccdisciesucsccsessscsdassucssaboundtscsesssseadsnssccdvanstsdcesans 163 Gels Macros a seks Sot a snes Sethe cof ted eth are cae eee loot 163 6 1 1 Creating a MacTO ooooconooncnonnnnonnnonnnnononncnonnnnononcnnnncnnnncnonnno 163 RGA for Windows Manual SP104001 Rev 2 50 Page iv 6 1 2 Removing and editing Macro ce eeeeeceeeeeeeeeeteeeeeeeees 164 6 2 Macro Commands sedrsa a n e oaa E 164 6 2 1 Mode Select Command ooooooocccncccnnnononananonoconnnananancnoniconnno 165 6 2 2 Filament Command ccccnnnnnnnccnncccnnnnonnnoninonanannnanonocinonananans 167 6 2 3 Disk Store Command oooonnnnnoccnncccnononnnnnanonocononannnnananocinonns 167 6 2 4 Set Chanel Command oconnnnnccccnnccnnnnnnonnnnnonoconanananananicinonas 167 6 2 5 Channel Write Commands cocccccnnnnn
52. scan the macro then enters the main loop and switches to the multi trend mode with the accuracy set to 3 the grid enabled the cursor disabled the global multiplier disabled continuous trace on the time interval is set to 1 second label trace is off the time axis is set to real not relative the time axis label is horizontal total pressure is enabled and the linear y axis is enabled The instrument will remain in the multi trend mode for 20 seconds before switching to the bar chart mode The set up for the bar chart mode is the same as above When one bar chart scan has been completed it will be stored to disk provided the 10 scans have not already RGA for Windows Manual SP104001 Rev 2 50 Page 171 been completed The macro then loops back and switches the instrument to multi trend mode SETCHANNEL 1 1 5 5 0 0 0 0 SETCHANNEL 2 1 10 6 0 0 0 0 SETCHANNEL 3 1 15 7 0 0 0 0 SETCHANNEL 4 1 20 5 0 0 0 0 SETCHANNEL 5 1 25 6 0 0 0 0 SETCHANNEL 6 1 30 7 0 0 0 0 MODE BARCHART 15 50 3 1 1 0 0 6 0 0 DISKSTORE C SPECTRA BARDATA WBG 10 0 151 SCANDELA Y 1 MAINLOOP MODE MULTITREND 3 1 0 0 1 1 0 0 0 1 0 TIMEDELAY 20 MODE BARCHART 15 50 3 1 1 0 0 6 0 0 SCANDELAY 1 GOTO MAINLOOP Example 5 The following macro starts by configuring the first six channels used in the multi trend and peak jump modes The sixth line of the macro sets the parameters in channel 6 by selecting channel 6 enabling this channel setting the mass to 30 amu sett
53. separate program again refer to the Recall manual DDE Examples These are example files to help the user with the DDE dynamic data exchange Links feature Please refer to DDE Examples Macro Examples These are example files to help users with the Macro feature described in Macro Examples You have now completed the installation of RGA for Windows We strongly recommend you work through Getting Started Introduction that will not only give you an introduction to RGA for Windows but will also check that your system is functioning correctly RGA for Windows Manual SP104001 Rev 2 50 Page 20 3 12 Installing Multi Headed RGA for Windows The remainder of this section of the manual deals with installing Multi Headed RGA for Windows systems and we have split it into two parts Firstly we quickly describe a basic installation of Multi RGA for Windows with step by step instructions and no detailed information For nine out of ten users this will be quite sufficient We have provided two versions of this part one for Windows 3 1 or later systems the other for Windows 95 systems You only need to follow the one applicable to you In the second part we provide full details of the plug in serial card and how to install and configure the Multi RGA for Windows software We suggest you start by following the step by step guide if you require more detailed information to complete the installation refer to later parts of this section When you have
54. status bar is removed and the mode continues scanning 5 1 12 Printing In the scanning modes a printout of the data can be obtained The user my incorporate a custom logo on the printout this is described in the Customisation section of this manual Printing A print always fills a page Depending on whether more detail is required in the x axis or y axis select either portrait or landscape orientation from the Program manager Control panel Printers dialog box Win95 Click on the Start button on the Taskbar and select Settings Printers Click on the appropriate printer to highlight it then select File Properties in the Printers window To print either click the Printer button select File Print from the menu bar or press CTRL P on the keyboard Printer selection Any printer that has been installed under Windows may be used To choose a printer run Control Panel in Windows Main group and select Printers RGA for Windows Manual SP104001 Rev 2 50 Page 111 Win95 Click on the Start button on the Taskbar and select Settings Printers Click on the appropriate printer to select it 5 1 13 Total Pressure Measurement A quadrupole mass spectrometer is essentially a device for measuring partial pressures It can however be used to mimic the action of a total pressure gauge e g an ion gauge The method used by the quadrupole for measuring total pressure will give different results from those produced by a dedicated inst
55. switch to the command line for the various reset icons Reset should be used following any software change or upgrade the system being halted by a loss of mains power or in the unlikely event of the instrument crashing RGA for Windows Manual SP104001 Rev 2 50 Page 87 5 1 3 Multiplexer and Loader This section only applies to multi headed versions of the RGA for Windows software There are two ways to start Multi RGA for Windows either to use the Multiplexer or to use the Loader In the Spectra program group there are six program item icons all of which will start RGA for Windows RGA Multiplexer RGA Multiplexer Reset Group 1 Group 1 Reset Group 2 and Group 2 Reset Win95 The six items are in the Spectra folder which can be accessed by clicking on the Start button on the Taskbar and selecting Programs Spectra Multiplexer The Multiplexer allows you to run one instance of RGA for Windows and selectively switch to any available control unit Double click on the RGA Multiplexer RGA Multiplexer Reset if a reset is required program item and the first head in the system will be started The first head will be the head set up as Group 1 Head 1 in the Configure program Notice the Head Select button on the setting bar this is only available when the system has been started using the Multiplexer In single headed systems or if the Loader has been used this button will not appear If you click on the Head Select b
56. the detailed description given in Filament Trips To proceed click on the Filament menu item on the menu bar The Filaments menu will appear Now click on the Protect Filament menu item The Filament Protect dialog box will now be displayed To enable total protect click on the Total Trip Enabled check box An X should be displayed in the check box and note that the Total Trip at 5 0E dropdown list box is set to 5 To close the dialog box click on the Ok button 4 11 Starting the Bar Chart Mode To start the Bar Chart mode click the Bar Chart button on the icon bar An annotated picture of the Bar Chart mode window is shown below which identifies its controls and the main areas of interest RGA for Windows Manual SP104001 Rev 2 50 Page 79 RGA for Windows Head 1 Bar Chart File View Filament Multiplier Settings Mode Help E w D n a i a 25 Mass a m u Enable disable the autorange feature Filament 1 Button Click on the Filament 1 button to switch filament 1 on and off see Filaments First Mass Button Group This group of three buttons control were the Bar Chart scan begins by selecting the first mass to be scanned Mass Span Button Group This group of three buttons control the number of masses to be scanned Accuracy Accuracy controls the stability of the readings and speed of aquisition see Accuracy Range Range controls the ammount of electronic amplific
57. this click on the appropriate down arrow and select the required number from the dropdown list by clicking on it Program Manager 7s File Options Window Help Custom Configuration Group Head RGA Multiplex a COM2 None None eset COMA 1 E BR 2 A ki Configure Porl COM5 1 3 pad None 3 None Recall Recall None None aes aes aes aes StartUp Microsoft Main Network Office From the custom configure window you can select the ports window by clicking on the Ports button This has the same effect as selecting the Ports icon from the Spectra program group The ports window will be displayed as shown below This shows base address and IRQ for each of the nine possible comms ports which may be set up to match the hardware fitted to your PC Three default options are available through the three buttons No Comms Card Default 1 Comms Card Default and 2 Comms Cards Default These give the most common configurations As you click on each of the buttons the values for the base address and IRQ will change Selecting one of these three buttons gives the same result as selecting 0 1 or 2 comms cards in the configuration window The default settings are given at the end of this section RGA for Windows Manual SP104001 Rev 2 50 Page 51 Once you have made the changes click the Ok button and the restart Windows warning box will be displayed Click the Yes button and Windows
58. to 31 0 47 to 0 5 0 1 2 3 4 5 0 off 1 on 0 disabled 1 enabled 0 disabled 1 enabled 0 faraday 1 multiplier 5 to 14 E 05 to E 14 O disabled 1 enabled 0 disabled 1 enabled 0 1 2 3 4 5 0 disabled 1 enabled 0 disabled 1 enabled 0 faraday 1 multiplier 0 disabled 1 enabled 1 to 3600 1 to 3600 seconds O disabled 1 enabled 0 Real time l Relative time 0 horizontal 1 verticle 0 disabled 1 enabled 0 Linear 1 Log 5 to 14 E 05 to E 14 5 to 14 E 05 to E 14 0 1 2 3 4 5 O disabled 1 enabled RGA for Windows Manual SP104001 Rev 2 50 Page 181 RGA4WIN RGA Peak Jump Fast Scan RGA4WIN RGA Fast Scan Cursor Detector gain Peak surround Total InLog LogLowERang e LogHighERan ge Grid Cursor Global Multiplier Continuous Trace Interval Label Trace Time Relative Time Vertical Label In Log Log Low Range Log High Range 7 6 Set Channel Command DDE This command is used to set all of the various parameters in a channel SET CHANNEL COMMAND Application Topic Command RGA4WIN RGA SETCHAN NEL Parameter Channel number Enabled 0 disabled 1 enabled 0 faraday 1 multiplier 0 disabled 1 enabled 0 disabled 1 enabled 0 Linear 1 Log 5 14 E 05 to E 14 amp must be less than LogHighERange 5 14 E 05 to E 14 amp must be greater than LogLowERange 0 off 1 on 0 off 1 on 0 disabled 1 enabled 0 disabled 1 enabled 1 to 3600 1 second to 1 hour 0 off 1 o
59. unit RGA for Windows Manual SP104001 Rev 2 50 Page 129 Alarms High alarm The High Alarm Enable and the High Alarm parameters are displayed in the Channel Settings dialog box The High Alarm parameter is the partial pressure that must be exceeded to activate the alarm When enabled the High Alarm arrow symbol will appear to the right of the peak plot When disabled the High Alarm arrow symbol will disappear The range over which the High Alarm operates depends on the type of detector the instrument is fitted with For all detectors the highest pressure setting is 9 9E 05 The lowest setting is 0 1E 11 for faraday only systems 0 1E 13 for x100 gain multipliers and 0 1E 14 for x1000 gain multipliers The alarm value may be set in 0 1 steps To enable the High Alarm click on the High Alarm check box in the Channel Settings dialog box to check it The High Alarm setting may then be entered via the Mantissa box and the Range E dropdown list box Click on the spin buttons to adjust the Mantissa Click on the Range E dropdown list box and select the required value from the dropdown list by clicking on it The values in the Range E dropdown list will depend on the type of detector your system is fitted with The other way of setting the High Alarm once it has been enabled is to drag the High Alarm symbol to change its value If the alarm value is outside the current display range it will be shown at either the top or the bottom of the grap
60. variation in magnitude over time The trend mode enables up to twelve components to be monitored over time You can individually set the mass range and detector for each channel The results are displayed on an intensity versus time graph which scrolls across the screen The scroll rate is set by the scan interval The interval sets the resolution of the time axis and also sets the minimum scan rate If the time taken to complete a single scan is RGA for Windows Manual SP104001 Rev 2 50 Page 70 greater than the interval then the data will be displayed as soon as it is aquired RGA for Windows No name 1 Multi Trend File View Filament Multiplier _ Settings Mode Help 1609 Pressure Torr 00 02 10 00 00 00 Interval 00 01 00 You have the option of a logarithmic intensity scale This enables you to display trends over the full dynamic range of the instrument and is probably the most widely used mode for general process monitoring 4 5 6 Leak check Leak checking is one of the fundamentals of vacuum system testing and maintenance It is mainly used to test the vacuum integrity of the chamber in which the analyser is mounted using a probe gas normally helium It can also be used as part of a test rig for leak checking vacuum components Any probe gas within the mass range of the instrument can be used with any range and detector setting This flexibility enables the leak check mod
61. will be re started to implement the new settings When Windows has re started you must enter the configuration program again whether you are performing a standard or custom configuration and repeat the configuration process outline above re setting any parameters that are not as you set them This time when you exit the configuration program Windows will not be re started Program Manager bd EA File Options Window Help Ports PW 2 10 F E Base Address IR COM1 RGA Mul Abad f 9 ere ES COM2 ozs e E No Comms Cards Default cows 00 Es El cov EA cous foso as TE A a e or 2 Ee E a El ER StartUp Microsoft Main Network Office You have now completed the installation of the RGA for Windows software We strongly recommend that you now work through the Getting started section of this manual This will not only introduce you to RGA for Windows but will also check out the operation for your RGA system 3 26 RS422 and RS485 RS422 is a differential serial communications system usually used when the distance between the transmitter and receiver exceeds that permitted under RS232 If you are using a Satellite control unit it must be fitted with the RS422 option The Satellite comms card must be configured for RS422 RGA for Windows Manual SP104001 Rev 2 50 Page 52 operation The cables used are not the same as the RS232 cables and
62. you are collecting data on more than the 12 components which could be handled by the peak jump or multi trend modes 4 5 4 Peak jump Having established that the general condition of your vacuum system is satisfactory your attention will probably turn to a limited number of specific components on which your process depends You now no longer need to spend time measuring every peak in the system but want to concentrate on just a few RGA for Windows Head 1 Peak Jump File View Filament Multiplier Settings Mode Help Total Pressure 0 9E 06 1 60 Ti 6 71 4 17 2 48 1 51 y 1 29 871 Eo E0 ES Es ES ES Els E09 40 16 28 Pressure Torr 15 Exit the Peak Jump mode _ This mode enables you to individually set the mass in any of the twelve channels You can assign each individual channel to either a specific gain range or set the instrument to autorange throughout its whole dynamic range This gives tremendous flexibility for process monitoring as you can monitor high and low level components simultaneously As you are only 7 1 27 Channel RGA for Windows Manual SP104001 Rev 2 50 Page 69 spending time looking at the chosen peaks this gives you a major time saving in one of two ways Firstly this enables you to take readings more frequently However the instrument offers a variable accuracy code which enables you to control the measurement routine the more accur
63. your hard disk To install RGA for Windows follow the procedure listed below 1 Run up Windows 2 Insert the program Disk 1 in drive A or B if you prefer 3 Chose the Run option from the Windows Program Manager File select menu Win95 Click on the Start button on the Taskbar and select Run 4 Type a install or b install if you are using the drive B The Spectra Install window will be displayed The install options RGA for Windows Download Recall DDE Examples Macro Examples will be displayed You can select the product options by checking the appropriate products We strongly recommend you to install all the product options You may also change the default directory where RGA for Windows will be installed For the purposes of this manual we will assume you use the default C SPECTRA directory 5 Click on the Install button to begin the installation process You will be prompted to insert program Disk 2 and Disk 3 at the appropriate time RGA for Windows Manual SP104001 Rev 2 50 Page 46 RGA for Windows will be installed on your hard disk and a program group called SPECTRA will be created and the Multi RGA for Windows program items added Win95 RGA for Windows will be installed on your hard disk and the Spectra folder will be created which will contain all the RGA for Windows program items When the installation process has been completed the Share exe warning box may be displayed click on the Ok button The
64. 2 6 4 Deuterium D2 0 35 Dichlorodifloromethane CC12F2 2 7 Dichloromethane CH2C12 3 7 Dinitrobenzene C6H4 NO2 2 7 8 Ethane C2H6 2 6 Ethanol C2H50H 3 6 Ethylene Oxide CH3 20 29 Helium He 0 14 Hexane C6H14 6 6 Hydrogen H2 0 44 Hydrogen Chloride HCl 1 6 Hydrogen Fluoride HF 1 4 Hydrogen Iodide HI 3 1 Hydrogen Sulphide H2S 2 2 Krypton Kr 1 7 Lithium Li 1 9 Methane CH4 1 6 Methanol CH30H 1 8 Neon Ne 23 Nitrogen N2 1 0 RGA for Windows Manual SP104001 Rev 2 50 Page 235 Nitric Oxide Nitrous Oxide Oxygen n Pentane Phenol Phosphine Propane Silver Perchlorate Tin Iodide Sulphur Dioxide Sulphur Hexofluride Toluene Trinitrobenzene Water Xenon Xylene NO N20 02 C5H12 C4H40H PH3 C3H8 AgC104 SnI4 SO2 SF6 C6H5CH3 C6H5 NO2 3 H20 Xe C6H4 CH3 2 RGA for Windows Manual SP104001 Rev 2 50 Page 236 Appendix E Default Settings Multiplier Accuracy Probe Gas Mass Offset Range Auto Range High Alarm Low Alarm Audio Multiplier Total Pressure Accuracy First Mass Mass Span Range Auto Range Multiplier Total Pressure Accuracy Multiplier Total pressure Accuracy Scan Interval Multiplier Total Pressure Accuracy Leak check 0 off 3 standard 4 Helium 16 Zero Peak Offset 5 E 05 0 Off 0 Off 0 Off 1 On Bar Chart 0 Off 1 On 3 Standard 1 First Mass 50 Mass Span 5 E 05 0 Off Peak Jump 0 Off 1 On 3 Standard Multi Trend 0 Off
65. 21 amp H302 Bit Mask 21 amp H10 Port Address 22 amp H302 Bit Mask 22 amp H20 Port Address 23 amp H302 Bit Mask 23 amp H40 Port Address 24 amp H302 Bit Mask 24 amp H80 5 6 Diagnostics The Diagnostics window displays the software versions of various key modules along with RF Tuning parameters if applicable and the results of diagnostics tests of seven key electronic power supplies A typical diagnostics window is shown in below To obtain a printout of this information press the Print button It is most important to have this information available when calling your local service centre RGA for Windows Manual SP104001 Rev 2 50 Microvision Diagnostics _ Software RGA for Windows Riw 2 40 0 0 300D Instrument ST 1 50a 0 0 in Microvision Plus Spectra BX VX 2 32 ComLib M1 1 02 Hardware Configuration Serial Number LM 70 00397010 Maximum Mass 300 R F Board ID LM70 100 300 Sem Supply 3 0Kv Analogue ID LM70 105 Power Supplies R F Tuning Degas Supply Passed Current settings Multiplier Supply Switched Off 130 Volt Supply Passed Low Mass Alignment 105 Slit cd Sepia High Mass Aligmment 107 5 Volt Supply Passed j 15 Volt Supply Passed Low Mass Resolution 129 Electron Energy Passed High Mass Resolution 117 Filament Current Off 0 034 To run Diagnostics either click the Diagnostics button or selec
66. 26July 1995 21 23 58 Es LU x T Lo E o a o Fi a 40 x Mass a m u Characteristic spectrum of water vapour in the vacuum system The problem 1s solved by baking the system to 250 deg C for some hours preferably with an oven to ensure a uniform baking temperature Remember to avoid sudden large temperature changes on ceramic and glass components to prevent damage RGA for Windows Manual SP104001 Rev 2 50 Page 227 Rotary pump oil Recall CAMANUALSIRGA4WINIDRAWINGSIROTARY WBG 1 Bg File Goto View Window Help E lelzl lsia Lld LI 110 WEE le Scan1of1 26July 1995 21 23 58 da LU x EE Lo E o 2 5 D o B pai a Mass a m u Characteristic spectrum of rotary pump oil contamination due to foreline trap not fitted or in need of reactivation Solve by fitting or reactivating trap as appropriate and bake vacuum system RGA for Windows Manual SP104001 Rev 2 50 Page 228 Polyphenylether diffusion pump oil Feo View Windy ep File Goto View Window Help sl jujslo uf J 1 1 17 WEI Scan1of1 26July 1995 21 23 58 E w x j 2 E o ag 3 mn mn o D a 40 50 Mass a m u Characteristic of spectrum of polyphenylether diffusion pump oil Solve by fitting efficient baffle or cold trap and bake RGA for Windows Manual SP104001 Rev 2 50 Page 229 Carbon monoxide and carbon dioxide Recall C
67. 59 seconds spent at each power level There are 256 power levels within the range of 15 to 100 of full power The Total Degas Time mm ss period regardless of Time Power Step time can be set in the range 1 to 59 minutes The Starting Degas Power level may be set between 15 and 100 of full power in 1 steps The ramped degas facility is a feature of Windows Satellite Microvision and Microvision Plus systems It is not available when using RGA for Windows with other control units such as Vacscan and Vacscan Plus these control units do not incorporate the necessary hardware RGA for Windows detects the type of control unit being used in the system and if it will not support ramped degas the Time Power Step and Starting Degas Power options will not be displayed in the Degas Setup dialog box The Total Degas Time can be adjusted as described above RGA for Windows Manual SP104001 Rev 2 50 Page 100 5 1 9 Multiplier Detector The multiplier or secondary electron multiplier to give it its full name is an optional second detector that is designed to amplify the ion beam signal without the drawbacks associated with electronic amplification The Channel Plate type SEM with gains of 100 and 1000 is described in this manual Single Channel Electron Multipliers with higher gains and requiring a high voltage power supply are supported by RGA for Windows but are not described in this manual To protect the multiplier from opera
68. 8 f Specdata wpj Notepad _ Of x File Edit Search Help FILE TYPE Peak Jump SOFTWARE VERSION RW U2 45a 6 6 366D SATELLITE VERSION ST U1 52 6 6 in Microvision Plus DATE 15 Jun 66 TIME 14 48 52 PRESSURE UNITS Torr NUMBER OF SCANS 18 STORE INTERVAL Every Scan STORE AT END OF SCAN Yes FILAMENT 1 1 66mA MULTIPLIER 0ff TELECTRON ENERGY 69 8U TION ENERGY 5 5U EXTRACT VOLTS 116 6U MODE DATA PEAK DATA LENGTH 12 TOTAL ENABLED 0n ACCURACY 3 CHANNEL DATAJ CHANNEL MASS 2 4 12 14 15 16 17 18 28 35 46 55 CHANNEL ENABLED Yes No No No No No No Yes No Yes Yes No CHANNEL AUTORANGEJ OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF CHANNEL MULT GAIN OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF CHANNEL HIGH ALARM OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OF CHANNEL LOW ALARH OFF OFF OFF OFF OFE OFF OFF OFE OFF OFF OFF OFF ISCAN DATAJ ISCAN NO ISCAN NO SCAN N0 DATE 15 Jun 66 TIME 41 14 90 PEAK DATA 3 25E 69 6 66E 66 PEAK DATA 3 27E 69 6 6G6E 66 PEAK DATA 3 32E 69 6 G6E 66 PEAK DATA 3 29E 69 6 6GE 66 PEAK DATA 3 24E 69 6 66E 66 y a A SCAN N0 1 2 3 4 SCAN N0 5
69. 8 3 11 The Spectra Program GTOUP ccoooccnonccoooncnonncnoncnnoncncnnoncnannconncnnnos 18 3 12 Installing Multi Headed RGA for Windows ooooocccocconccooccnnncnnos 21 3 13 Quick Guide Windows 3 1 ooooconncccccononacccnoonnnononanancnannnnconannnos 21 3 14 Quick Guide Windows 95 ooooococcnococccononnccononanononananonannnconannnos 25 3 15 Multi Headed Detailed Installation o ooncnnccnncnnconnccnnccnnncnnss 37 3 15 1 Instrument architecture ooooocnnccnnccnoconocononannncnnnannnannnannnannos 37 3 16 Computer Requirements Multl oooonoconoocccoocncoooncnonncconnnnnnononos 38 3 17 Ports and AddresSES coooocnoconoccnoncnonconnconncnnnonnncnnnconncnn cra cconccnnncnnos 39 3 18 Satellite Comms Card eocooncccnnccocccioncnonconnconncnnncnnncnnncnncconccnnccnnccnnos 40 3 18 1 Comms card description coooccooocnonccconcncononononncnoncnnonanonns 40 3 18 2 Setting the physical addresS ooooooccnnococoocncnonncnonccnonononos 41 3 18 3 Choosing the configuration oooocononccnoncnconnncnonncnonccnonononos 42 3 19 Connecting Control UnitS oooonoccnonocconccnoncnconnnononncnonccnoncnnoncnonos 43 3 20 Installing Share Multl oooononincccnonccconncnoncnonnnncnnnnononccnoncnnonononos 44 3 21 Installing Override COM oooooccnnonncoonncnonncnononcononcnnnncnon conan cnnonnnonos 45 3 22 Comms Cards and Windows 95 0 eecesseeseesseeseeeneeeeeneeeneeesees 45 3 23 Running Install Multi oooooonnocociocc
70. Alarm Exponent LoAlarm Exponent Dwell Settle Mass Offset Mass Mass Mass PC Alarm Signal Ratio Channels 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 or 3 0 to 6 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 900 900 900 900 900 900 900 900 900 900 900 900 100 100 100 100 100 100 100 100 100 100 100 100 5 5 5 5 5 5 5 5 5 5 5 5 5 53 53 93 6 6 6 6 6 6 6 6 6 6 6 6 100 100 100 100 100 100 100 100 100 100 100 100 16 16 16 16 16 16 16 16 16 16 16 16 2 4 12 14 15 16 17 18 28 32 44 55 if mass gt 50 1 2 4 12 14 15 16 17 18 28 32 44 if mass gt 20 1 2 3 4 7 8 12 14 15 16 17 18 otherwise depends on head 0 0 0 0 0 0 0 0 0 0 0 0 CONFIGURATION Section Alarm Sound Background Colour Alert Bar Colour Help Bar Colour Disk Status Bar Colour Sem Protect On a wav file amp HOCOCOC0 amp amp HFF S amp H80FFFF amp S amp H80FFFF amp 1 Production Features Available 0 Pressure Y Label Library Y Label Mass Label Ignore CTS Key Repeat Delay Key Repeat Interval Pressure Torr Peak Heoght Mass a m u 0 600 5 Up Down Repeat Interval 180 Normal Text Highlight Text Standard Font Sequence Available default ON Ramped Degas amp HO amp SHFF amp 10 1 Sequence available override 1 RGA for Windows Manual SP104001 Rev 2 50 Page 241 SEM Gain Setting EM EE Adjust On PC Digital I O Fitt
71. Chart Mode Switching a Filament On Changing the Mass Scan 4 2 RGA for Windows Basics 4 2 1 Running RGA for Windows After installing RGA for Windows thirteen seventeen in the case of Multi RGA for Windows Manual SP104001 Rev 2 50 Page 61 RGA for Windows program items will have been added to the SPECTRA program group as shown in figures 1 and 2 Win95 The RGA for Windows items appear in the Spectra folder Click on the Start button on the Taskbar then select Programs Spectra The configure program was run as part of the installation process If you ever connect control units to different serial Com ports the configure program must be run to specify the serial port used When RGA for Windows is run for the first time after installation a POWER UP RESET should be performed This will ensure that all the parameters stored in data files on the PC and in the control unit s memory are reset to the default values To perform a POWER UP RESET double click the RGA Reset program item icon Win95 Click on the Start button on the Taskbar select Programs Spectra then click on the RGA Reset item If you are using Multi RGA for Windows double click on the RGA Multiplexer Reset program item icon do not use the Group 1 Reset and Group 2 Reset icons until you are more familiar with the system Win95 If you are using Multi RGA for Windows click on the RGA Multiplexer Reset item do not use Group 1 Reset and Group 2 Reset until you
72. F Tuning This aspect of RGA for Windows is fairly complex and may only be of interest to a few users Before you change any of the parameters associated with RF tuning or changing or adding RF Head Analyser combinations you should read this section and have a clear understanding of what you are trying to achieve CAUTION Do not attempt to use this feature unless you are fully aware of the implications Misuse will prevent the instrument from operating correctly 9 8 1 Feature compatibility The RF Tuning feature is available with all Microvision Plus Microvision and Vac Check 100 instruments With Windows Satellite instruments the feature is only available when a complete system comprising an analyser RF head Satellite and RGA for Windows software are purchased together They are not available if you use an adapter box to connect an analyser and RF head supplied by another manufacturer The RF Tuning feature is not available when using Vacscan Plus and Vacscan control units There are a number of compatibility problems which you may encounter if you are using RF heads or Satellites which were purchased separately or as part of the DOS Black Box Multi Quad system The two symptoms you may find are e Ifthe Settings menu is not displayed in analogue mode then you do not have the software and or hardware options fitted in your Satellite If you did not purchase your Satellite and RF head as part of RGA for Windows package then your sys
73. Log axis The results in Multi Trend may be plotted on either a Logarithmic y axis with a selectable number of decades or on a linear y axis showing results in the range 0 00 to 9 99 To change the displayed axis click on the Log button on the setting bar or select Settings Log Axis from the menu bar In Log axis display all channels will autorange within the limits of Log Axis Start range to Log Axis End range When the axis style is changed the existing trend data will be redrawn with the new axis style Log display decades In log mode two dropdown list boxes similar to the Range control in other modes are displayed These determine which decades are displayed To change the From or To range click on the appropriate dropdown list box on the setting bar then click on the required value in the list They can also be set from the Channel Settings dialog box The From range must be less than or equal to the To range In Log mode data will be acquired over all ranges available for the selected detector regardless of the displayed decades 5 2 4 Leak Check The following topics are specific to the Leak Check mode Leak Check Overview Specific Leak Check Features The following general topics apply to the Leak Check mode Disk Store Printing Multiplier Detector RGA for Windows Manual SP104001 Rev 2 50 Page 139 Accuracy Range Autorange Grid Cursor Leak Check Overview A typical Leak Check display is shown below This mode
74. Message toi aaa 199 CUPSOP ada 116 117 C stomisation an Ea R 193 D DDE Nata tios tn io ed ad 175 178 179 DDE Examples 2 ciccectcieigdeeteeteivangteeeles iia iaa 187 Default Settings ccccesccesssessersesereesesecsstesecsecensesesauetsauesenessenesesseeseers 237 Desa a eaecrerthe raserteet re rth rere peer tierca AA 99 100 DIA SDOSUES ii A A LA 78 79 159 160 Digital VO Car de oa ds lala iaa tee 155 156 157 AISCOME SAA AAA AAA A 90 DIESE tnd 109 111 Document Data ooooooconococccononoccononcnncononnnonononcononanoconannnocnnnnnncnnnnnanconnannconnns 251 DoWalo dd ai A 56 57 58 59 PD Well time li T AT A EE 146 NIN ANA 145 E Elapsed time aia 138 148 149 Extra rd aida die eto ld adds ade a a a 89 Extemal trip csc elie Meet eet Ge ating Ges Bele 96 97 98 99 F East e eee a 144 145 149 Fatal Error eo diia 205 Filaments ensar a toda iaidd io 83 95 TEI WATE 5 256 5s Peis reel SAS ASA 8 10 First MASS occccnnoooooocnnccononannnnnnnnncnnnnnnnnnnnnncnnnnnnnnnnnnnnccnonnnnnnnnnnnnononannnnns 142 143 First MaS Sinaran a al 119 G General Commannds cccccccsssccesssseccessssecceesseececeessseeceessseeceesseeceeesseeeeeeas 186 Gets Heerema a hes a R 5 Getting Started Introduction ooconoconooncononcnonncnoncnconononan conan nononcnconcnconnnonnnos 61 IS NON 219 RGA for Windows Manual SP104001 Rev 2 50 Page 253 Cud d TV OUR issu tscc cine das ni EEEN SaS 72 H Head Dames a ai ia 91
75. Mode Emission Electron Ion Energy Extractor Energy Std Ion Source ImA 70eV 5 5eV 112V PVD Ion ImA 40e V 7 0eV 20V Source HPQ 2 RGA 0 7mA 70eV 7 0eV 110V Mode HPQ 2 HP 0 1mA 35eV 5 0eV 58V Mode HPQ 2 Leak 1 0mA 88eV 10 0eV 130V Mode RGA for Windows Manual SP104001 Rev 2 50 Page 213 9 8 7 RF head tuning There are four parameters which need to be set in order to tune the RF head to a particular analyser These four parameters adjust the mass alignment and resolution of the system The four parameters are Low mass alignment High mass alignment Low mass resolution High mass resolution RF head tuning in this instance refers to the adjustment of the mass alignment and resolution settings Under normal operating conditions you should not need to adjust these settings If the mass alignment and or resolution appear to be incorrect you should first reset to the factory default settings for that analyser RF head combination To do this switch to the Analogue mode and select Settings RF Tuning from the menu bar the RF Tuning dialog box will be displayed click on the Defaults button If after resetting to the factory default settings the mass alignment and or resolution still appear to be incorrect you could try re tuning Before doing so you need to appreciate the following points e Peak alignment is the position of the peak centre relative to the mass scale The software will find the top of the peak if it is wi
76. ONTROLLER RF TUNING PORTS SIGNALS ANALOGUE OUTPUT CONFIGURATION Each INI file section is detailed below The sections are listed in alphabetical order not in the order in which they appear in the INI file The first column is the item text and the second is the default value The third column RGA for Windows Manual SP104001 Rev 2 50 Page 239 contains explanatory comments ANALOGUE Section Erange 0 List index string starting at 0 Auto Range 0 0 or 14 Accuracy 3 Total On 1 Mass Zoom 1 Listindex staring at 0 First Mass l or 14 1 if mass range 20 else 14 ANALOGUE OUTPUT CONFIGURATION Section PC Analogue Output Fitted 0 Channel n 300 0 10 300hex 0 10V ANALOGUE OUTPUT SETTINGS Section Channel n 0 10 2 0 1E 4 0 0 where parameters are S MinDesiredOutputV S MaxDesiredOutputV S ScaleType S MinValue s Max Value D DataType D DataIndex BAR CHART Section In Log High Range Low Range Erange Auto Range Accuracy Total On First Mass Mass Zoom from 5 up applies to Log scales as above applies to linear scale values 0 to 6 Sa a u0O Ouoo O or2 List index number 1 for maxmass 20 CHANNEL Section In Log 0 High Range 8 for log scales Low Range 5 as above Accuracy 3 RGA for Windows Manual SP104001 Rev 2 50 Page 240 Total On Detector Gain Erange Auto Range Enabled HiAlarm Enabled LoAlarm Enabled HiAlarm Mantissa LoAlarm Mantissa Hi
77. RGA for Windows Manual SP104001 Rev 2 50 October 2000 As part of our continuous product improvement policy we are always pleased to receive your comments and suggestions about how we should develop our product range We believe that the manual is an important part of the product and would welcome your feedback particularly relating to any omissions or inaccuracies you may discover You can send your comments to MKS Instruments Spectra Products Cowley Way Weston Road Crewe Cheshire CW1 6AG United Kingdom 44 0 1270 250150 Tel 44 0 1270 251939 Fax In North America you can send your comments to MKS Instruments Spectra Products 380 Woodview Ave Morgan Hill CA 95037 USA 408 778 6060 Office 408 776 8575 Fax 1 800 VAC CHECK http www spectra rga com Windows and Windows 95 are trademarks of the Microsoft Corporation All other brand or product names are trademarks or registered trademarks of their respective companies Contents Contents sis access cesceeleccctes cocncdecencdessslousccteetectdesccdscesddensedesscdacsucesect ss i Errata and addenda cccccccccssssssssssscccccccssscsssssscsccccesecsssscecsceces a Section 1 RGA for Windows Help Manal scccsscsssseeeee 1 Ll Welcome ocaso as bolera e de nd da de 1 1 2 Using the Help Manual oooocononccnoncccononcnonncnoncnnononcononononncnonnnnnncnonns 1 1 2 1 Installation Instructions oooocccccnnnnnonanannnocono
78. RGA for Windows If the card provides interrupts these must be disabled 5 5 2 Configuring alarm outputs Before you can get your digital I O card to give you any alarm signals you need to configure RGA for Windows so that it is aware of your alarm output requirements There are three parts to this configuration process 1 Specify the number of 8255s fitted specify the base address of each one and configure all the ports to be outputs RGA for Windows Manual SP104001 Rev 2 50 Page 155 2 Allocate a unique signal number to a single bit on a specific port 3 Set up the channels to use the required Signal for their alarm output 5 5 3 Port configuration During the RGA for Windows installation procedure a file named DIGIO INI was installed in the Spectra directory a printout of this file can be found at the end of this section To configure the ports the PORTS section of the DIGIO INI file must be edited To do this open the DIGIO INI in a text editor such as Notepad which comes with the Windows software A PORTS section is listed below with an explanation of each line following it PORTS Number of 8255 1 8255 1 Base amp H300 0 Output 1 Input 8255 1 PortA 0 8255 1 PortB 0 8255 1 PortCH 0 8255 1 PortCL 0 The first line Number of 8255 n indicates how many 8255s are fitted which are going to be used for alarm outputs In the second line 8255 n Base address n is an increme
79. This section of the manual describes all of the RGA for Windows functions We envisage users referring to this section when they need specific information rather than reading the section in detail from start to finish 5 1 General Features 5 1 1 Help On line help may be accessed at any time while RGA for Windows is running by pressing the Fl key The help files may be opened without starting RGA for Windows by double clicking the RGA Help program item icon in the Spectra program group Alternately in the scanning modes you can click on the Help button or use the Help Contents menu For details about how to use the on line help select Help Using help from the menu bar 5 1 2 Reset The various parameters the user sets up while working with RGA for Windows are stored and used when a mode or RGA for Windows is re started For example in the Bar Chart mode the range mass span and first mass valves set up in the last session will be used when the mode is started This happens when RGA for Windows is started using the RGA RGA Multiplexer Group 1 or Group 2 in multi RGA for Windows program item icon in the Spectra program group Another set of values for all the parameters referred to as the factory defaults is also stored these values are used when RGA for Windows is started using the RGA Reset RGA Multiplexer Reset Group 1 Reset or Group 2 Reset for multi RGA for Windows program item icon The reset is achieved by adding the R
80. This will be grayed out in the Mode Selct window See Disk Store Print Button Click on the Print button to send data to the printer See Printing for more information RGA for Windows Manual SP104001 Rev 2 50 Page 76 Filament Buttons Click on one of the two filament buttons to switch one of the filaments one A filament must be on before the RGA will aquire any data Make sure the pressure is low enough before you switch a filament on see Guided Tour Filaments are explained in Filaments Multiplier Detector Click on this button to switch on the Multiplier detector if your instrument is fitted with one The filament must on See Multiplier Detector for more information Bar Chart Button Click on the Bar Chart button to enter the Bar Chart mode see Bar Chart Peak Jump Click on the Peak Jump button to enter the Peak Jump mode see Peak Jump Multi Trend Button Click on the Multi Trend button to enter the Multi Trend mode see Multi Trend Leak Check Button Click on the Leak Check button to enter the Leak Check mode see Leak Check Analogue Button Click on the Analogue button to enter the Analogue mode see Analogue Fast Scan Button Click on the Fast Scan button to enter the Fast Scan mode see Fast Scan Vacuum Scan Click on the Vacuum Scan button to run Vacuum Scan see Vacuum Scan and Quadrupole RGA Diagnostics Button Click on the Diagnostics button to run the instrument Diagnostics We recommend you do
81. Under normal circumstances this file is identical to the ini file that is used throughout the rest of the program e g RGA4WIN INI for single headed operation or RGA4WINn INI for multi headed operation Where 1t becomes important is when the Multiplexer is used In this case certain setting are always taken from the ini file that the multiplexer was booted from So for example when starting RGA for Windows with the M1 switch the boot ini file is set to RGA4WINI INI from this point on certain settings are always taken from the RGA4WIN1 INI file rather than the INI file for the head RGA for Windows Manual SP104001 Rev 2 50 Page 193 being used These settings are usually user preference type settings such as whether the icon bar is visible or not the size and position of the window Settings that are head and scan specific are read in from the INI file for that particular head Settings that belong in the boot ini file are noted in the tables below You may find some items in the ini file which are not listed in the following tables these are put there by RGA for Windows and should not be changed Field Background colour Sem Protect On Pressure Y Label CONFIGURATION Section Default amp HOOCOCOCO amp Pressure Torr Boot ini Options Light grey background This is the RGB value for the background of the display 00 zero 80 half ff full The number of colours will depend on the video card 0
82. Windows cannot recover the information deleted RGA for Windows Manual SP104001 Rev 2 50 Page 126 Info Used to open the Background Information window that gives details on the conditions under which the background was stored along with the any comments The background data is contained in the file spectra mdb You can add or delete backgrounds in RGA for Windows but it is also possible to modify the background database using Microsoft Access The information contained in the database is stored in the two tables Background Header and Background Peaks Background header The Background Header information indexes into one or more entries in the Background Peaks table Other information is stored in the header which relates to the system settings when the background was stored The fields included are Background ID Name Comment Mode Software Version Date Time Filament State Multiplier State Multiplier Gain Accuracy Display Axis High Gain Low Gain Last Mass First Mass Total Enabled and Total Pressure Background peaks An entry is made in this table for every peak that has a non zero value in the background It is linked to the header table with the Background ID The entry consists of the mass number and its intensity Background subtract The background subtract feature allows any stored background to be subtracted from the active spectra If no background spectra have been stored the background subtract button will
83. ace Interval 1 to 3600 1 second to 1 hour Label Trace 0 off 1 on Time Relative 0 Real Time x axis 1 Relative Time axis RGA for Windows Manual SP104001 Rev 2 50 Page 165 Time Vertical 0 Time Label Horizontal 1 Time Label Label Vertical Total 0 disabled 1 enabled In Log 0 Linear y axis 1 Log y axis Log Low Range 5 14 E 05 to E 14 and must be less than see note 1 Log High Range value Log High Range 5 14 E 05 to E 14 and must be less than see note 1 Log Low Range value PEAKJUMP Accuracy 0 1 2 3 4 5 Grid 0 off 1 on Cursor 0 off 1 on Global 0 disabled 1 enabled Multiplier Peak Surround 0 Off 1 On Total 0 disabled 1 enabled In Log 0 Linear y axis 1 Log y axis Log Low Range 5 14 E 05 to E 14 and must be less than see note 1 Log High Range value Log High Range 5 14 E 05 to E 14 and must be less than see note 1 Log Low Range value FASTSCAN Accuracy 0 1 2 3 4 5 Grid 0 off 1 on Cursor 0 off 1 on Global 0 disabled 1 enabled Multiplier Continuous 0 Disabled 1 Enabled Trace Interval 1 to 3600 1 second to 1 hour Label Trace 0 off 1 on Time Relative 0 Real Time x axis 1 Relative Time axis Time Vertical 0 Time Label Horizontal 1 Time Label Label Vertical In Log 0 Linear y axis 1 Log y axis Log Low Range 5 14 E 05 to E 14 and must be less than see note 1 Log High Range value Log High Range 5 14 E 05 to E 14 and must be less than see note 1 Log Low Range value LEAKCHECK Pr
84. added in the previous steps select it and carry out the following steps 4 Click on the Properties button and select the Resources tab at the top of the window RGA for Windows Manual SP104001 Rev 2 50 Page 32 Communications Port Properties AE 0100 0107 Interrupt Request 03 Basic configuration 8 JS Use automatic settings 5 Change the Setting based on setting to Basic configuration 8 Once this is done you will be able to change the Input Output Range Base address and Interrupt Request IRQ settings by double clicking them and selecting the appropriate values for the configuration of your comms card RGA for Windows Manual SP104001 Rev 2 50 Page 33 Edit Input Output Range No devices are conflicting Edit Interrupt Request No devices are conflicting RGA for Windows Manual SP104001 Rev 2 50 Page 34 6 When the settings are correct click the OK button The following message will appear System Settings Change 9 You have made changes to your hardware settings Before your device will work properly you must shut down W Windows turn off your computer s power and then change the settings on the hardware device to match the settings you selected For information about changing settings see your hardware documentation Do you want to shut down now 7 Ifyou still have more ports to configure then choose No and repeat the steps above If it is the last port left to configur
85. ak is To switch it on and off either click the Audio Tone button on the setting bar or select Settings Audio Enabled from the menu bar Continuous trace RGA for Windows Manual SP104001 Rev 2 50 Page 141 The trace can be plotted as either dots or as lines joining the dots To enable disable this feature select View Continuous Trace from the menu bar 5 2 5 Analogue The following topics are specific to the Analogue mode Analogue Overview Specific Analogue Features The following general topics apply to the Analogue mode Disk Store Printing Multiplier Detector Accuracy Range Autorange Total Pressure Measurement Total Pressure Microvision Plus Grid Cursor RF Select Set All Analogue Overview A typical Analogue display is shown below This mode allows one of a number of pre set ranges of consecutive masses to be scanned The starting mass First mass can also be specified It is generally used to confirm that the RGA is functioning correctly and to allow adjustments to resolution and mass alignment to be made The actual mass range scanned is First mass 0 5amu to First mass Mass span 0 5amu For each amu in the scan the complete peak profile is plotted Specific Analogue Features First mass The starting mass of the scan is determined by this parameter It is variable in the range of 1 to maximum mass mass span 1 The label on the x axis will always start with one half amu less than the fi
86. al SP104001 Rev 2 50 Page 57 The full file name for Microvision code to run RGA for Windows using the default path is C spectra microv img The full file name for Microvision Plus code to run RGA for Windows using the default path is C spectra mvplus img Once the correct file name has been specified click on the OK button and the code will be transferred this takes a little time just long enough to get a cup of coffee if you re quick Click on the Exit button to close the Download dialog box Clicking on the About button will display the Download version window which provides useful information for our technical staff should you require assistance Note that in a multi headed system it will be necessary to Download control unit code to each control unit in the system The above procedure must be repeated selecting each comm port used in turn To remove the software from the battery backed RAM in the control unit use the Unload button The RGA control unit will revert to using the software held in the EPROM This must be done if the EPROM in a Satellite has been changed otherwise RGA for Windows will carry on using or trying to use the code held in the battery back RAM It may not always be possible to upgrade the software in the Satellite by using the download facility For instance if the EPROM software is many software versions older than the new software Please contact your local Spectra facility if you are in doub
87. al Pressure 0 0E 05 0 00 0 00 0 00 0 00 0 00 0 00 E 05 E 05 E 05 E 05 E 05 E 05 o E Mm _ o N p a 2 4 12 14 48 1 47 18 28 32 44 55 Channel Title Bar The Title Bar unsurprisingly contains the application name RGA for RGA for Windows Manual SP104001 Rev 2 50 Page 63 Windows the head number and the currently selected mode Menu Bar In common with other Windows applications all the software functions can be accessed from the menu bar Icon Bar Buttons on the icon bar allow access to the main functions and modes within RGA for Windows Setting Bar Functions and parameters which are related to a specific scanning mode are displayed and altered here Channel Buttons Modes which are channel based peak jump multi trend and fast scan have a number of parameters associated with each channel These parameters are altered in the Channel Settings dialog boxes which are accessed using the channel buttons Help Bar To discover the purpose of a particular button you should point to the button of interest The text displayed on the help bar will automatically change to indicate the function of that button The text displayed will only be updated when you point to another button Mode Window The scanning modes plot the results of the scan in this window 4 4 Controls Controls on the icon and setting bars together with those available through the channel buttons
88. al mode parameters set up using the set mode command Generally a macro will set up the various channel parameters before switching to the required channel mode see the following examples Command MODE SETCHANNEL Mode Parameter Channel number 1 to 12 RGA for Windows Manual SP104001 Rev 2 50 Page 167 Enabled Mass Display Range SEM setting Autorange Low Alarm High Alarm Dwell Settle 0 disabled 1 to max mass of instrument O total pressure 1 amp 2 analogue input and 2 5 to 14 E 05 to E 14 O faraday 2 mult x100 3 mult x1000 0 disabled 1 enabled 6 2 5 Channel Write Commands The channel write commands are used to set a particular parameter in all 12 channels e g Channel Write Enabled is used to set each of the twelve channels off or on When used in a macro each command will be followed by a string of 12 variables one for each channel each separated by a semicolon CHANNEL WRITE Commands Command CHANNELWRITE ENABLED CHANNELWRITE MASS CHANNELWRITE RANGE CHANNELWRITE AUTORANGE CHANNELWRITE SEM CHANNELWRITE HIALARM CHANNELWRITE LOALARM CHANNELWRITE DWELL CHANNELWRITE Description sets each channel off or on 12 mass settings one for each channel sets the range for each channel auto range off or on selects the detector sets the high alarm value sets low alarm value dwell times 200microsecs xX 2 dwell value
89. aling factor and the result is displayed as the Total pressure reading By default the total pressure calibration factor is 1 RGA for Windows Manual SP104001 Rev 2 50 Page 112 To set a total pressure scaling factor add the following line to the QUAD CALIBRATION section of the RGA4WINn INI file Total Calibration Factor n where n can be any value but will normally be in the range 0 01 to 100 MHo The scaling factor can be entered by using the Total Pressure Measurement dialog box see next section If a Quad Calibration section does not exist in the INI file usually it will not add the heading QUAD CALIBRATION and the above line immediately below it after the last section The Total protect trip will still operate at 5 0 on the selected range on the uncalibrated measurement The actual value displayed for the Total trip level will be the calibrated value at which the trip will occur and the ranges are adjusted accordingly For example with a Total calibration factor of 1 the level displayed is 5 0 and the range of decades is E 05 to E 11 If a Total calibration factor of 2 0 is used the Trip level will be 1 0 with the range of decades as E 04 to E 10 Total pressure readings displayed in the Channel modes are the calibrated readings Use care when setting the alarm levels in the channel modes since it is possible to set them to a level that can never occur when the Total calibration factor has been applied Total P
90. alytical mode although it may be useful for some applications It is an important mode for tuning the R F head and as a means of monitoring the general condition of the analyser Under normal operation you should not need to use this mode 4 5 3 Bar chart In this mode the peak intensity information is presented in a histogram format as shown below RGA for Windows Head 1 Bar Chart File View Filament Multiplier Settings Mode Help Total Pressure 1 3E 06 5 tE oa 2 10 10 2 a 0 25 Mass a m u Enable disable the autorange feature A The start mass and mass span of the scan can be chosen as can the range on which the scan is taken An autorange feature is also available which will adjust the range of the instrument until the mantissa of the largest peak falls within the range 0 70 and 9 60 when the linear axis is selected A logarithmic intensity axis enables the display of data over the full dynamic range of the instrument This mode is used for taking a general over view of the vacuum system It is the mode in which you are likely to find something unexpected within the vacuum system This mode is useful in many circumstances RGA for Windows Manual SP104001 Rev 2 50 Page 68 e When you wish to take a snapshot picture of the vacuum system at any point in time e If you do not know what is going on in the vacuum system you would use this mode to see which gas predominates e If
91. ameter is the partial pressure that must be exceeded to deactivate the alarm The range over which the Low Alarm operates depends on the type of detector the instrument is fitted with For all detectors the highest pressure setting is 9 9E 05 with 0 1 steps The lowest setting is 0 1E 11 for faraday only systems 0 1E 13 for x100 gain multipliers and 0 1E 14 for x1000 gain multipliers To enable the Low Alarm click on the Low Alarm check box in the Channel Settings dialog box to check it The Low Alarm setting may then be entered via the Mantissa box and the Range E dropdown list box Click on the spin buttons to adjust the Mantissa Click on the Range E dropdown list box and select the required value from the dropdown list by clicking on it The values in the Range E dropdown list will depend on the type of detector your system is fitted with Fast Scan Specific Features Zero amplifier To increase the scan speed the amplifier is only zeroed when the user selects a zero rather than at the end of each scan as in other modes To perform an amplifier zero click on the Zero Amplifier button on the setting bar or select Settings Zero Amplifier from the menu bar Time interval The time between plotting the scans on the screen may be set anywhere between one hundredth of a second and 30 minutes in one hundredth of a second increments To increment or decrement the interval click the up and down buttons next to the interval button on the set
92. and is sent This command is only valid if a valve controller is connected to the RGA control unit 7 11 DDE Examples To make DDE Links easier to use various example files have been included with RGA for Windows During the installation process a directory named C SPECTRA DDE was created and the following files were copied to it DDETEST EXE DDETEST1 TXT DDETEST2 TXT RGA for Windows Manual SP104001 Rev 2 50 Page 187 FILAMENT TXT LOCK TXT MODES TXT ANALOG XLM ANALOG XLS BARCHART XLM BARCHART XLS PEAKJUMP XLM PEAKJUMP XLS TREND XLS VSPKJDDE XLS DDETEST EXE is a small program that allows you to send individual commands to RGA for Windows or groups of commands in a script file It is used in conjunction with the files with the extension TXT The TXT example files are listed later in this section Before running DDETEST make sure that RGA for Windows is running To run DDETEST double click the DDE Test program item icon in the Spectra program group When the program starts you will be presented with a window with three buttons Run Script Single Command and Exit Single command To run Single Command click on the Single Command button When Single Command is selected you may type individual DDE commands and see their result The Topic text box will default to RGA4WIN RGA for a single headed installation this can be changed but the vast majority of commands use the RGA topic In the Command text box you can type your
93. anges this should be taken into account if autoranging is enabled Mass The mass parameter determines the type of measurement made in the channel Normally it will be the mass number when a partial pressure measurement is to be performed e g 28 for Nitrogen 32 for Oxygen 18 for Water etc To adjust the mass in the Channel Settings dialog box click on the increment or decrement spin button or click on the Mass box and type in the required value Alternatively you may select either total pressure TOT or one of the built in analogue inputs When using the increment decrement buttons TOT AIl and AI2 can be selected by decrementing below mass 1 or they may be typed in Multiplier Each channel can use either the faraday or multiplier detector independently The multiplier check box is used to enable or disable the multiplier detector If it is not checked the peak will be measured using the faraday detector When checked the multiplier detector will be used for that channel providing the global multiplier control has been enabled The multiplier button on the icon bar controls and indicates the current global multiplier setting If the global multiplier is not enabled when multiplier is selected in a channel that channel will not be read As with other modes the multiplier gain can be set to x100 or x1000 To select the gain click on the Multiplier Gain dropdown list box and then click on the required gain in the dropdown list Dwell tim
94. ant Windows to search for your new hardware C Yes Recommended pe lt Back Cancel and then select Next gt 4 At the third page select Ports COM amp LPT RGA for Windows Manual SP104001 Rev 2 50 Page 28 Add New Hardware Wizard Select the type of hardware you want to install Hardware types A Mouse 7 Multi function adapters Network adapters Q Other devices PCMCIA socket SCSI controllers Sound video and game controllers m System devices v lt Back Cancel as the type of hardware to install and then click on the Next gt button 5 At the fourth page select Standard port types for the Manufacturer and Communications Port for the Model Add New Hardware Wizard Click the manufacturer and model of your hardware IF your hardware is not y listed or if you have an installation disk click Have Disk If your hardware is still not listed click Back and then select a different hardware type To see all hardware choices click Unknown Hardware Manufacturers Models Communications Port ECP Printer Port Printer Port Standard port types Hewlett Packard Have Disk lt Back Cancel RGA for Windows Manual SP104001 Rev 2 50 Page 29 and then select Next gt 5 At the fifth page Windows will come up with some likely hardware settings for the new port these will most likely be wrong but at this stage they cannot be c
95. anual for details about installing the analyser and how to connect it to the RGA control unit The control unit to PC connection software installation and configuration should be completed according to the instructions given in RGA for Windows Manual SP104001 Rev 2 50 Page 72 section 2 of this manual Before proceeding with the tour you should also ensure that the pressure in the analyser chamber is below the maximum operating pressures listed below 4 6 2 Maximum pressure limitations The table below shows the pressure requirements for each analyser type Before switching on a filament the total pressure in the analyser chamber must be below those listed in the table DETECTOR MODE MAX PRESSURE Faraday only Faraday 1 x 10 Torr Dual Faraday 1 x 10 Torr faraday amp electron Multiplier 2x 10 Torr multiplier CAUTION The Electron Multiplier SEM MUST NOT be operated at temperatures above 50 C 4 7 Running RGA for Windows Switch on the RGA control unit and ensure that it is powered up by checking the status of the power indicator Now run up Windows on your PC and from the program manager open the SPECTRA program group To start single headed RGA for Windows double click on the RGA Reset icon To start multi headed RGA for Windows double click on the RGA Multiplexer Reset icon When you run RGA for Windows for the first time or after a software upgrade you should always use a reset Win95 Click on the Start butto
96. are Typically a jack plug wired to the normally closed contacts of a vacuum gauge is plugged into the External Trip socket on the rear of the control unit When the contacts open the filament will be tripped Alternatively the External Trip socket can be driven by a TTL signal if a relay contact is RGA for Windows Manual SP104001 Rev 2 50 Page 98 unavailable When the external trip is active it is not possible to turn on a filament and should it become active when a filament is on it will cause the filament to be switched off and the Filament Protect Trip Check the level of the external trip input message will be displayed The Filament button will indicate that the filament is off The external trip gives maximum protection to the filaments it is always active it has minimal delays associated with the software and can be set to operate at any level It is recommended that the external trip be used if possible RVC trip When the optional Remote Vacuum Controller RVC is fitted the filaments have an additional level of protection For filaments to be switched on the RGA chamber pumps must be on and up to working speed and if used the external trip input must be at the correct level When the RVC trip is active it is not possible to turn on a filament and should it become active when a filament is on it will cause the filament to be switched off and the Filament Protect Trip Check the pumps are on and the level of the exte
97. are given an arbitrary name consisting of two fields Generally we recommend that the serial numbers of the RF head and analyser are used although any text string may be entered To add a new RF Analyser combination open the RF Tuning dialog box from the Settings menu in the analogue mode From the Current RF Analyser pair list box select the Add new RF Analyser combination entry This will allow the name and default settings to be entered for the new RF head analyser combination CAUTION Once a new RF head Analyser combination has been added it is not possible to change the default settings or delete the entry from within the RGA for Windows program This has been done deliberately to prevent the accidental deletion of the default factory settings RGA for Windows Manual SP104001 Rev 2 50 Page 212 Low Mass Alignment High Mass Alignment a Low Mass Resolution a High Mass Resolution a Current RF Analyser Pair LM4 00193001 LM2 93001 3D2 y Ok Cancel Current Defaults E 9 8 6 Adding RF head Analyser combinations The following table gives the default ion source settings for quadrupoles used with Microvision Plus Vac Check and Satellite instruments fitted with standard open and PVD ion sources The table also gives the default settings for HPQ 2 in its three operating modes Please note that filament material does not affect the ion source settings Instrument amp ION SOURCE PARAMETER
98. are more familiar with the system To run RGA for Windows when a POWER UP RESET is not required you should double click the RGA program item icon Win95 Click on the Start button on the Taskbar select Programs Spectra then click on the RGA item To run Multi RGA for Windows when a POWER UP RESET is not required you should double click on the RGA Multiplexer program item icon Win95 Click on the Start button on the Taskbar select Programs Spectra then click on the RGA Multiplexer item Mouse and keyboard operation RGA for Windows Manual SP104001 Rev 2 50 Page 62 RGA for Windows operation is similar to any other windows application Keyboard operation is supported using the standard menu and shortcut keys There are a number of operations which can be performed more efficiently using the keyboard however a keyboard is only required if you want to specify a filename for disk store Text information can only be entered using the keyboard and you will probably find that changing the numeric value of a parameter by a large amount is best achieved by entering the new value from the keyboard The basic techniques for keyboard and mouse operation are described in the Microsoft Windows user guide 4 3 Parts of RGA for Windows A typical peak jump mode display is shown below click on the the graphic to identify the various parts of the screen F RGA for Windows Peak Jump File View Filament Multiplier Settings Mode Help Tot
99. are using later versions such as Windows for Workgroups 3 11 you will not need to install SHARE EXE To install SHARE EXE follow the instruction in Installing Share exe You will need to install override com by adding the line C spectra override com to your autoexec bat file to do this 1 Open a text editor such as Notepad which can be found in the Accessories program group in Windows 2 Open the autoexec bat file which can be found in the root directory usually c 3 Add the line c spectra override com to a part of the autoexec bat file which is used when Windows is booted up 4 Save the autoexec bat file under the same name 5 Now re boot your PC so that the change is implemented Note since the content of autoexec bat files vary greatly from computer to computer it is not possible define exactly where the line should be put Usually it will be towards the end of the file If you experience any difficulties try putting the extra line in a different place in the autoexec bat file Step 4 Assigning logical names to the ports on the comms card To assign the logical names to each port RGA for Windows Manual SP104001 Rev 2 50 Page 24 double click on the Ports program item in the Spectra program group A warning box will be displayed asking you if you want to install our own comms driver click on the Yes button See Windows System Ini File for more information about the comms driver click on the 1 Comms Card Def
100. arning message will be displayed and vacuum scan will end Viewing the results The results of the latest vacuum scan are displayed in order of magnitude as a partial pressure and as a percentage of the largest peak found The gasses most commonly associated with the peaks found may be displayed by clicking on the Gases button The peaks found may be loaded into the Peak Jump and Multi Trend modes by clicking on the Set Peak Jump and Multi Trend button The peaks will have the same range as found in vacuum scan and autorange will be enabled If less than twelve peaks were found then channel numbers greater than the number found will be disabled A printout of the results maybe obtained by clicking on the Print button RGA for Windows Manual SP104001 Rev 2 50 Page 153 5 3 Analogue Output Module The Aux I O port on the back of the RGA control unit is used as TTL alarm outputs in the standard configuration If the optional Analogue Output Module is fitted then the alarm TTL outputs must be disabled by selecting File Preferences Satellite Analogue Output from the menu bar in the Mode Select screen The alarm function in Peak Jump will be available but without the TTL outputs If an expansion module such as an RVC or Valve Controller is connected to the Aux I O port the File Preferences Satellite Analogue Output menu item will not be available If the File Preferences Satellite Alarm Output menu item is checked it must first
101. ate the result the longer the time it will take This means that instead of using the time in peak jump to acquire more data you could acquire the same amount of data but with considerably improved accuracy Secondly in addition to measuring partial pressure peaks you may select either total pressure or one of the two or more depending on RGA control unit type built in analogue inputs to be measured in any channel This mode also has a high and low alarm capability for each channel The alarms operate in the range 0 1E 14 to 9 9E 05 The alarm condition is triggered if the magnitude of a peak exceeds the high alarm setting or falls below the low alarm setting The peak is plotted in red if its magnitude falls outside the alarm range and an output is set true on the relevant pin of the AUX I O connector on the control unit There are a number of key advantages for this mode The logarithmic axis and auto ranging ability makes this mode useful for any kind of process monitoring Alarms enable the system to be used to regulate key process values The increased speed with which data can be collected makes this mode useful for short term experimental monitoring applications The control you have over the accuracy makes this mode useful for detailed experimental work 4 5 5 Multi trend Very often when only a few components are being measured you may not be interested in the instantaneous magnitude of a particular mass but rather in the
102. ation that is applied to the measured signal see Range RGA for Windows Manual SP104001 Rev 2 50 Page 80 Total Pressure Display The quadrupole can mimic an ion gauge and provide an indication of total pressure measurement The total pressure is displayed here if total pressure is enabled See Total Pressure Measurement Autorange Button Click on the Autorange button to enable the autorange facility The gain range will be adjusted so that the largest partial pressure measurement is within the scale of the y axis Also see Autorange Total Pressure Button This buttoncontrols whether the Total Pressure measurement is made and displayed See Total Pressure Measurement Grid Button A grid may be displayed to make it easier to read partial pressure measurements See Grid Log Axis Button The y axis may be either linear or logarithmic see Logarithmic Axis Bar Chart Library Button Click on this button to enable the library feature see Library Background Button Click on this button to enable the background feature see Background Background Subtract Button Use this button to subtract the currently enabled background from the sectrum to give a live spectrum See Background Mass Cursor Button Click on this button to enable the mass cursor feature that allows accurate partial pressure reading to be made See Cursor Scan Dot The scan dot indicateas where on the mass scale the current reading is being taken It should mo
103. ault button this was the way we configure the comms card in step 1 then click on the Ok button You will then be prompted to re start Windows click on the Yes button to do this Step 5 Configuring RGA for Windows so that each head number is allocated to a port by its logical name Double click on the Configure program item in the Spectra program group the Configure window will be displayed Select the number of heads by clicking on the Number of Heads connected dropdown list box then click on the appropriate number in the dropdown list Then select the number of comms cards fitted in your PC by clicking on the Number of Comms Cards fitted dropdown list box then click on the number in the list Then click on the Ok button You should have now successfully installed Multi RGA for Windows Further information about the installation process can be found in the rest of this section 3 14 Quick Guide Windows 95 Here we will get your Multi RGA for Windows system up and running by following five simple steps We will be making a standard installation if this is not appropriate for your needs please refer to the second part of this section of the manual where you will find detailed information Step 1 Setting the physical addresses on the comms card The comms card is full described later in this section in step 1 we will just check and set if necessary the factory default settings of comms card RGA for Windows Manual
104. be displayed Once you have created the macro a button will be place on the screen which you click on to run the macro the text you enter in the Button Title box is the text that will appear on this button The cursor will be positioned in this box type in the text that you want to appear on the button By placing an amp before a character in the Button Title the character will be shown underlined on the button and the macro can be run by pressing ALT the underlined character as a keyboard shortcut Once the button title text has been entered position the cursor in the Macro File box by positioning the mouse pointer in the box and clicking or press ALT M This is where you will enter the file name for the macro Click on the Browse button to look through the directories on your disk for the RGA for Windows Manual SP104001 Rev 2 50 Page 163 macro file you require You can now enter the Help Text by positioning the cursor in the Help Text box This is the text which will appear in the help bar when you move the mouse pointer over the macro button Click on the Ok button to exit the Add Macro Button dialog box and create the macro button clicking on the Cancel button will exit without creating the macro button Click on the Edit button to enter the text editor associated with TXT files normally Notepad to make any changes to the macro text file If no file exists you will be prompted to create one clicking on the Yes button will
105. c dos share exe 1 500 f 5100 This assumes that the share exe command is in the DOS sub directory cidos If it is in another sub directory use that name instead of dos in the above line note that there is a single space before each of the two forward slashes f allocates the number of bytes for the share file information l sets the number of files that can be locked at any one time When the line has been added to the autoexec bat file you need to re boot your PC 3 9 Running Install The INSTALL EXE program included on program Disk 1 should be used to RGA for Windows Manual SP104001 Rev 2 50 Page 16 install RGA for Windows onto your hard disk To install RGA for Windows follow the procedure listed below 1 Runup Windows 2 Insert the program Disk 1 in drive A or B if you prefer 3 Chose the Run option from the Windows Program Manager File select menu Win95 Click on the Start button on the Taskbar and select Run 4 Type a install or b install if you are using the drive B The Spectra Install window will be displayed The install options RGA for Windows Download Recall DDE Examples Macro Examples will be displayed You can select the product options by checking the appropriate products The default is for all of the product options to be selected checked We strongly recommend you install all the product options You may also change the default directory where RGA for Windows will be installe
106. cnonncoonncnoncnconnncnnnncnon non nncnnnos 46 3 24 Spectra Program Group MUltl ooooonnoccnonccconcncononononncconcnnonononos 47 3 25 Configuring Multi RGA for Windows ooccooccnoonnconnncnonncnonnnnnos 49 3 26 RS422 and RS485 ooo eceescesceeececeeseeseeeeeeeeeseeaeeeeeeaeeseeneeeeeaes 52 3 27 Windows System Ini File ooooooconocccconccconcnconcncnonncnonncnoncnnonononos 53 3 28 Default Comms SettidgS ooococoonnnnonncnonncnoncncononononncnon conan cnnanenonns 53 3 29 Upgrading From Earlier Versions oooooccnooccconcncononcnonncconcnnonononos 54 3 29 1 RS232 Cable ui lides 54 3 29 2 Preserving set icon 56 3 30 Download ceceeccesscsseeeseeeseeeseeesceeseeceeeeeeeesseeseeeseneeeneeeneeees 56 3 31 Baking The Analyser ceecesscesseesseeseeeseeeececeeeeseecseeseeeeseeeees 59 Section 4 Getting Started ccic cccsssossessscsvsoosescoeewesssessssevensnseessess 61 RGA for Windows Manual SP104001 Rev 2 50 Page ii 4 1 Getting Started IntroductiON ooooooccnooccnoncnconnncnonncnoncnnoncnconononnnos 61 4 2 RGA for Windows BasiCS oooooococoonncononcnonncnoncncononcnnnncnoncnnncnannno 61 4 2 1 Running RGA for WindoWS ooocccooccnonncnoncnconononnnnconnncnononos 61 4 3 Parts of RGA for WindOWS cccoooccoonncnooncnonnnonnnncnnn conan cnnoncncnnnncnnnos 63 AA COMITOIS E E tesdegnievdeasteesdeaatee vtganeasieeete 64 4 54 Quadrupole RGA wc ccel ce a A R 65 ASS Vacuum SC a td hil eee heehee 66 43 2 A si
107. command and then click on the execute button to send the command e g typing UODE BAR CHART will put RGA for windows in Bar Chart mode Run Script When Run Script is selected you can type the name of a file that contains commands to be executed in sequence Each line of the script file contains an instruction to execute or a comment Comments are preceded by a semicolon character Four special DDETEST commands that are NOT RGA RGA for Windows Manual SP104001 Rev 2 50 Page 188 for Windows DDE commands can be used to set the speed of execution for the script and the topic that the DDE commands are on These special commands are preceded by an asterisk INTERVAL lt Number of seconds gt DELA Y lt Number of seconds gt TOPIC lt Application and topic for following DDE commands gt EXIT INTERVAL sets the delay between each command being sent e g INTERVAL 0 1 gives a 0 1 second delay between successive commands DELAY inserts a one off delay e g DELAY 10 will wait 10 seconds before continuing with the rest of the script EXIT ends the script file Example DDETEST1 TXT DDE Example 1 Puts RGA for Windows in Bar Chart mode and starts off diskstore for 5 scans INTERVAL 0 1 TOPIC RGA4WIN RGA Mode BARCHART TOPIC RGA4WIN BAR CHART DISKFILENAME C SPECTRA DDE DDE1 WBG DISKSCANS 5 DISKSTORETYPE 0 DISKSTART EXIT Example DDETEST2 TXT DDE Example 2 Puts RGA for Windows in Multi
108. commands are sent to the RGA topic but actually set the channel parameters in the Peak Jump Multi Trend and Fast Scan modes To set the channel parameters you should send these commands from the Mode Select mode and then enter the required mode If these commands are sent while Peak Jump Multi Trend or Fast Scan modes are running then any changes made will not take effect until you restart the mode CHANNELWRITEENABLED cl c2 c12 cn 0 Channel n Disabled cn 1 Channel n Enabled CHANNELWRITERANGE c1 c2 c12 cn 5 14 CHANNELWRITEAUTORANGE c1 c2 c12 cn 0 Channel n Autorange Disabled cn 1 Channel n Autorange Enabled CHANNELWRITESEM c1 c2 c12 cn 0 2 or 3 This should be used to set the multiplier gain CHANNELWRITEMASS c1 c2 c12 cn Channel n Mass Number CHANNELWRITEHIALARM lt c1 c2 c12 cn 0 Off 9 9E 5 gt cn gt 0 1E 14 CHANNELWRITELOALARM lt c1 c2 c12 cn 0 Off 9 9E 5 gt cn gt 0 1E 14 CHANNELWRITEDWELL c1 c2 c3 c12 cn 2 x 0 2 milliseconds where n 0 tol4 CHANNELWRITESETTLE c1 c2 c3 c12 cn 8 to 9900 milliseconds RGA for Windows Manual SP104001 Rev 2 50 Page 185 7 9 General Commands FILAMENT n n 0 Off n 1 Filament 1 On n 2 Filament 2 On Use this command to control the filaments LOCKTASK n n 0 Unlock Task n 1 Lock Task To prevent interaction with RGA for Windows using the Mouse and Keyboard while it is being
109. completed the installation you may wish to study the rest of the section for background information Quick Guide Windows 3 1 Quick Guide Windows 95 Multi Headed Detailed Installation Computer Requirements Multi Ports and Addresses Satellite Comms Card Connecting Control Units Installing Share Multi Installing Override com Comms Cards and Windows 95 Running Install Multi Spectra Program Group Multi Configuring Multi RGA for Windows RS422 and RS485 Windows System Ini File Default Comms Settings 3 13 Quick Guide Windows 3 1 Here we will get your Multi RGA for Windows system up and running by following five simple steps We will be making a standard installation if this is not appropriate for your needs please refer to the second part of this section of the manual where you will find detailed information Step 1 Setting the physical addresses on the comms card RGA for Windows Manual SP104001 Rev 2 50 Page 21 The comms card is full described later in this section in step 1 we will just check and set if necessary the factory default settings of comms card l Check that the four large 40 pin ICs IC1 IC7 IC13 and IC16 are fitted this will ensure you have a four port card Check that IC5 IC9 and IC11 are fitted this will ensure your card is configured for RS232 if you want to use RS422 refer to section RS422 and RS485 Check that jumper J9 is fitted between pins 3 and 4 this will set the addresses
110. creen space is used by RGA for Windows to display data this can be very useful with multi headed systems where multiple data displays can be shown simultaneously RGA for Windows Manual SP104001 Rev 2 50 Page 94 The default setting is Icon Help and Settings Bars enabled Grid and Cursor disabled 5 1 6 Filaments The instrument is fitted with two filaments of which only one may be on at any one time Switching on and off The easiest way to switch on a filament is to click on a Filament button on the icon bar Alternatively select Filament Filaments On Off from the menu bar select either Filament 1 On or Filament 2 On from the Filament dialog box and click on the Ok button The filament setting will not be changed until the Ok button is pressed To provide maximum protection to the filaments and to extend their life the electronics allows the filament to gradually warm up by slowly increasing the filament current While this takes place a message box will be displayed If the emission from the filament reaches the pre set value the yellow Filament Warm up message box will be cleared the Filament button will remain depressed and the filament will be red rather than blue to show that the filament is on and working If the filament is not functioning correctly after eight seconds the Filament Failed message bar will be displayed To turn a filament off click its button a second time or select Filament Filament On Off from
111. d For the purposes of this manual we will assume you use the default C SPECTRA directory 5 Click on the Install button to begin the installation process You will be prompted to insert program Disk 2 and Disk 3 at the appropriate time 6 RGA for Windows will be installed on your hard disk and a program group called SPECTRA will be created and the RGA for Windows program items added Win95 RGA for Windows will be installed on your hard disk and the Spectra folder will be created which will contain all the RGA RGA for Windows Manual SP104001 Rev 2 50 Page 17 for Windows program items 7 When the installation process has been completed the Share exe warning box will be displayed click on the Ok button You will then be prompted to run the configuration program which is described in the following section 3 10 Configuring RGA for Windows The configuration program is run automatically as part of the installation process and can be re run at any time to change the configuration of RGA for Windows To re run Configure double click the Configure icon in the SPECTRA program group Win95 To re run Configure click on the Start button on the Taskbar then select Programs Spectra and click on the Configure item The configure program will produce a list of the Com ports available on your PC which are not currently being used When configure is run on a PC with the two standard Com ports and a mouse connected to Com 1 it will repo
112. d RGA for Windows systems This section will only be necessary if the step by step guide in the previous section was not suitable for your system 3 15 1 Instrument architecture The complete Multi Headed RGA for Windows system comprises of one PC running Multi RGA for Windows software and a number of RGA heads Each RGA head has three basic elements the analyser this is the part which fits into the vacuum chamber RF power supply this is a small electronic unit which fits directly onto the analyser control unit an electronic unit containing the power supplies and data acquisition system which connects to the PC via a serial cable A three headed system would consist of one PC fitted with a comms card which is running Multi RGA for Windows three analysers three RF power supplies three control units and three RS232 serial cables Multi headed RGA for Windows systems may be configured to run one head this is often done when additional heads are to be added at a later date The type of control unit used in RGA for Windows systems may vary Microvision combines the traditional control unit and RF power supply RGA for Windows Manual SP104001 Rev 2 50 Page 37 electronics into one extremely compact unit which plugs directly onto the analyser Microvision Plus is similar to the Microvision but enhanced electronics gives improvements in performance and allows additional RGA for Windows features to be used The Satellite is design
113. d if a filament failed condition is present refer to the Trouble shooting section Also see Filament Trips 5 1 7 Filament Trips To help protect the filaments from over pressure they can be tripped i e switched off in five ways emission trip partial pressure trip total pressure trip external trip and RVC trip Note that a filament tripping will cause the multiplier to trip if it was on See section Filament trips E TRIP The filaments have been switched off internally by the EMISSION TRIP facility Insufficient emission current is flowing and the Filament Off when failed option in the Filament Protect Filaments menu is checked P TRIP The filaments have been switched off internally by the PARTIAL PRESSURE TRIP facility See section Partial pressure trip T TRIP RGA for Windows Manual SP104001 Rev 2 50 Page 96 The filaments have been switched off by the internal TOTAL PRESSURE TRIP facility See section Total pressure trip X TRIP The filaments have been switched off by the EXTERNAL TRIP facility See section External trip RVC TRIP The filaments have been switched off because the vacuum conditions being monitored by the optional Remote Vacuum Controller are incorrect for filament operation i e the RGA chamber pumping system is not on and up to speed This will only occur if your system is fitted with a Remote Vacuum Controller Emission trip When a filament is operating normally approximately 1mA of emis
114. d in section Library select Edit Used to open the Library Edit window which allows an existing library entry to be modified The library edit feature is described in section Library edit Add Used to open the Add Library Entry window which allows a new library entry to be created Section Library add describes adding spectra Delete Used to delete the current library entry Any of the library spectra may be deleted so it may be worth making a backup copy of the library before you start deleting entries To back up the library make a copy of the file spectra mdb which can be found in the same directory as RGA for Windows CASPECTRA if you have used the default setting when installing the software Library select Click on the Select button to display the Library Select dialog box shown below RGA for Windows Manual SP104001 Rev 2 50 Page 122 Select Library Entries Lx Selected Mass 22 LL As Major Peak i el O As Any Peak Select Library Entries operates as a filter on the library entries initially 62 spectra With select disabled all 62 entries are available and Carbon Dioxide for example will be displayed as 12 of 62 With select enabled only spectra containing a chosen mass or a chosen mass as the major peak will be available To enable Select Library Entries click on the Select button in the Library window to display the Select Library Entries dialog box Check Select Enabled then enter the mass of interes
115. d is incremented each time a scan ends It is useful for synchronising reads of the PeakData and TotalPressure items Item PeakOffset In Analogue each scan consists of 256 data points Due to the amount of data it cannot all be made available at once One of 256 data points may be read from the PeakData item which is indicated by the PeakOffset item and set using the SETOFFSET n command The PeakOffset defaults to 0 Item PeakData This item is the peak height of the data point indicated in the PeakOffset item Topic BAR CHART Item TotalPressure The total pressure value is available in this item if total pressure measurement is enabled Item ScanNumber This item is set to zero when the mode starts and is incremented each time a scan ends It is useful for synchronising reads of the PeakData and TotalPressure items Item PeakMass In Bar Chart each scan consists of up to 300 peaks Due to the amount of data it cannot all be made available at once One of the peaks may be read from the PeakData item which is Indicated by the PeakMass item and set RGA for Windows Manual SP104001 Rev 2 50 Page 177 using the SETOFFSET n command The PeakMass defaults to First Mass Item PeakData This item is the peak height of the mass indicated in the PeakMass item Topic LEAK CHECK Item PeakData This item is the peak height of the mass currently being scanned Topic MULTI TREND Item TotalPressure The total pressure value is a
116. dback particularly relating to any omissions or inaccuracies you may discover in this help document This RGA for Windows Help document will be updated from time to time Please contact your local Spectra facility to see if there is a newer version available Please have the information above ready This is a paperless form of the manual which was shipped with your software package and is based on the original manual LP1010005 Rev 2 47 August 1998 1 2 Using the Help Manual 1 2 1 Installation Instructions The Help Manual is in the form of a Windows Help file that can be viewed using the Windows help file viewer WINHELP EXE By using this format as opposed to the original manual s word processor format it is available to RGA for Windows Manual SP104001 Rev 2 50 Page 1 the widest possible number of users The manual may be viewed in Windows 3 11 Windows 95 or Windows NT operating systems The file RGA4Win HLP may be run from the CD or it may be copied to your hard drive and run from there Windows 3 11 and Windows NT 3 51 To run from disk 1 Insert the disk in Drive D we assume your CD ROM drive is D if not substitute the correct drive letter 2 From Program Manager select File Run in the Command Line box type D RGA4Win HLP and click on the OK button or press ENTER 3 The RGA for Windows Help Manual window will be openned To copy to your hard drive We will assume you have a directory named SPECTRA on your
117. dows Manual SP104001 Rev 2 50 Page 217 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 218 Appendix A Glossary Atomic mass unit AMU Exactly one twelfth the mass of a neutral atom of the most abundant isotope of carbon 12C 1 amu 1 660x10 27 kg Abundance sensitivity Partial pressure analyser The smallest concentration of one gas that can be detected in the presence of another gas with a partial pressure analyser of a given design Active gas A gas which reacts readily with some substances to form chemical compounds Background spectrum Partial pressure analyser A mass spectrum of residual gas species in a system It is usually obtained before a sample of interest is introduced and analysed in order to deduce by subtraction of spectra the true mass spectrum of the sample Backstreaming The movement of gases or vapours under molecular flow conditions in the opposite direction to the gas flow or pumping Bakeout The term used to describe the process of heating a vacuum system to reduce or eliminate condensable gaseous contaminants Base peak The largest peak in the spectrum of a pure compound Cold trap A vacuum vessel containing an inner vessel which may be filled with liquid nitrogen Vapours in the vacuum system are condensed onto the cold surfaces reducing contamination They also prevent backstreaming of diffusion pump oil into the vacuum system Well designed cold t
118. dows Manual SP104001 Rev 2 50 Page 89 If the detector for a channel is set to multiplier but the multiplier is not switched on then that channel will not read a partial pressure and a message box will be displayed to warn the user This message box may is enabled or disabled by selecting File Preferences Channel Mode Multiplier Warnings in the mode select screen When a 4 tick is shown the message box will be displayed this is the default setting Pressure units Three sets of units are available Torr mBar and Pascal To change the units in the mode select screen select File Preferences Units then click on the required unit to select it The currently selected units will be shown by a 4 tick The y axis text will change depending on the units selected Since Pascal units are numerically 100 times larger when they are selected the gain ranges alter accordingly The type of pressure units used is recorded in the header section of data files with the statement Pressure Units nnnn Disconnect The disconnect feature is designed to allow the RGA to go into a standby mode when the RGA for Windows program is closed This means that all the mass spectrometer supplies will be maintained and the filaments will remain on If the optional RVC package is fitted then the pumps will remain on as well as the filaments while full protection and control of the system is maintained To enable the disconnect feature select File Prefer
119. duction or service engineer to assist in tuning or fault finding This will result in the alert bar message still being displayed but the RF generator will not be prevented from operating RGA for Windows Manual SP104001 Rev 2 50 Page 162 Section 6 Macros 6 1 Macros One of the major additions to version 2 30 RGA for Windows is the Macro facility where various functions can be carried out automatically based on instructions held in a macro file The macro language is similar to the DDE language but is not capable of conditional flow control if then else type statements and cannot support variables The basic procedure for using macros is to write the macro as a text file give it and its button a name then click on the button to run the macro A series of example macros which are printed at the end of this section are provided to help you get started 6 1 1 Creating a macro To create the macro enter a text editor such as Notepad which is supplied as part of the Windows software package and type the macro using the macro commands as described later in this section Save the macro in the directory where you want to keep your macros The example macros are in a directory called C SPECTRA MACROS which was created when RGA for Windows was installed and all the examples have the file name extension mac To create a macro button select File Add Macro from the menu bar in the Mode Select screen the Add Macro dialog box will
120. e This is the time the instrument spends on the selected channel taking readings The shorter the dwell time the faster the scanning but the fewer the number of readings therefore the less stable the result To set the dwell time click on the Dwell mS dropdown list box and then click on the required time from the dropdown list Only times from the list maybe set other values may not be typed in Settle time RGA for Windows Manual SP104001 Rev 2 50 Page 146 This is the time the instrument spends after switching to the next channel and tuning to a new mass value before starting to take measurements The shorter the settle time the fast the instrument will scan but the greater the chance of the results being unstable To set the settle time click on the appropriate spin button to the right of the Settle mS box or click on the box and type in the required value in the range 8 to 9900 If autoranging is enabled the settle time should take into account the worst case highest gain range in order to guarantee consistent results Ratio with channel This allows the cursor value displayed in the Key panel to be expressed as a ratio of that channel s reading and another selected channel s reading It operates in the same way as it does in Multi Trend To enable ratio click on the Ratio with channel check box to check it then click on the dropdown list box and select the channel to ratio with from the list by clicking on it The channel identif
121. e 0 Filename C SPECTRA Spectra mdb Library On 0 Background On 0 Subtract On 0 Microvision Plus Total Pressure Input 255 External TP Linear Full Scale 0001 External TP Log 5V 00001 External TP Log 1 V 1E 09 External TP Analog Input 1 External TP Scale Mode 0 QUAD CALIBRATION Total Calibration Factor 1 ANALOGUE ERange 4 Auto Range 0 Accuracy 3 First Mass 8 RGA for Windows Manual SP104001 Rev 2 50 Page 247 Mass Zoom Total On 1 BAR CHART In Log 0 High Range 8 Low Range 5 ERange 4 Auto Range 0 Accuracy 3 First Mass 1 Mass Zoom 2 Total On 1 LEAK CHECK ERange 0 Auto Range 0 Accuracy 3 Probe Mass 4 Offset 16 Audio On 1 MULTI TREND Colour Trend 0 Time Relative 1 Vertical Time Label 0 Interval 1000 Label Trace 0 PEAK JUMP Peak Surround 1 CHANNEL In Log 0 High Range 8 Low Range 5 Accuracy 3 Total On 1 Detector Gain 0 0 0 0 0 0 0 0 0 0 0 0 ERange 0 0 0 0 0 0 0 0 0 0 0 0 RGA for Windows Manual SP104001 Rev 2 50 Page 248 Auto Range 0 0 0 0 0 0 0 0 0 0 0 0 Mass 2 4 12 14 15 16 17 18 28 32 44 55 Enabled 1 1 1 1 1 1 0 0 0 0 0 0 HiAlarm Enabled 0 0 0 0 0 0 0 0 0 0 0 0 LoAlarm Enabled 0 0 0 0 0 0 0 0 0 0 0 0 HiAlarm Mantissa 900 900 900 900 900 900 900 900 900 900 900 900 LoAlarm Mantissa 100 100 100 100 100 100 100 100 100 100 100 100 HiAlarm Exponent 5 5 5 5 5 5 5 5 5 5 5 5 LoAlarm Exponent 5 5 5 5 5 5 5 5 5 5 5 5 Dw
122. e Channel button for the desired channel the Channel Setting dialog box will be displayed click on the Autorange check box In Multi Trend and Fast Scan the autorange may be enabled by clicking the appropriate Mass box for the desired channel the Channel Setting dialog box will be displayed click on the Channel Enabled check box We recommend users not to use Autorange when leak checking 5 1 17 Grid A grid can be overlaid on the graphs of all scanning modes allowing partial pressures to be read more precisely In the Multi Trend mode the grid is shown as a series of dots so that both partial pressure and scan time can be read For exact readings the Cursor feature should be used In all modes the grid can be enabled by either clicking on the Grid button on the setting bar or by selecting the View Grid Enabled from the menu bar 5 1 18 Cursor A Cursor is available in all scanning modes allowing masses to be identified RGA for Windows Manual SP104001 Rev 2 50 Page 116 and exact partial pressures to be read from the graph When the cursor is enabled move the mouse pointer onto the graph and press the left mouse button and drag the mouse pointer across the peaks In the Multi Trend mode partial pressures for each enabled channel are shown on the expanded key panel along with the scan time While the left mouse button is pressed you can drag the cursor to any position on the time axis to read the partial pressures of a particu
123. e If a bus mouse is used then it is possible to connect the two control units to Com1 and Com2 and not fit a comms card 3 18 1 Comms card description The Satellite comms card is a flexible serial interface board which may be set up in various configurations depending on the application It should be supplied correctly configured for your application but before fitting the card it is worth checking the configuration All the necessary information for configuring the card is given in the following section The Satellite comms card is populated according to the number of ports requested one port is required for each control unit with four ports being available on a fully populated card To determine how many ports are fitted look to see how many of the large 40 pin ICs IC1 IC7 IC13 IC16 are fitted one is required for each port Also check that these ICs carry the identification PC16550DN or similar only the numbers 16550 are important The Satellite comms card will have been set to the requested serial interface specification RS232 or RS422 To check this for RS422 IC5 IC9 and IC11 RGA for Windows Manual SP104001 Rev 2 50 Page 40 will not be fitted and links Lk1 to LK8 will be fitted otherwise the board will be configured for RS232 Also note the position of the connectors for the four ports on the comms card Port 1 PLG 5 mounted on the PCB closest to the edge connector Port2 PLG 4 mounted on the PCB furthest from the ed
124. e override com program writes zeros into the BIOS for the four Com port addresses so that they are ignored when the PC is booted up and the values from the system ini file are used To add the line 1 Open a text editor such as Write which can be found in the Accessories program group in Windows 2 Open the autoexec bat file which can be found in the root directory usually c 3 Add the line c spectra override com to a part of the autoexec bat file which is used when Windows is booted up 4 Save the autoexec bat file under the same name 5 Now re boot your PC so that the change is implemented Note since the content of autoexec bat files vary greatly from computer to computer it is not possible define exactly where the line should be put Usually it will be towards the end of the file If you experience any difficulties try putting the extra line in a different place in the autoexec bat file 3 22 Comms Cards and Windows 95 If you are running under Windows 95 and are installing a comms card you will need to configure Windows 95 to recognise the card There is no RGA for Windows Manual SP104001 Rev 2 50 Page 45 software to automatically do this Please follow the step by step instructions in Quick Guide Windows 95 You should do this before you install the RGA for Windows software 3 23 Running Install Multi The INSTALL EXE program included on program Disk should be used to install Multi RGA for Windows onto
125. e installation of plug in cards Note that you will need TWO free slots for each comms card 3 19 Connecting Control Units Multi RGA for Windows software will run from one to eight control units split into two groups of four units The control units will normally be connected to Ports 1 through 4 on one of up to two Satellite comms cards depending on the number of heads being used The connections between your PC and the control units are made using the serial cables supplied usually these will be RS232 The standard cable to connect a Satellite or Microvision to the PC is a 9 way D plug to 9 way D socket RS232 cable a 25 way D socket to 9 way D plug RS232 cable is available as an option To connect a Vacscan or Vacscan Plus to the PC a null modem cable is required as standard this is a 9 way D socket to 9 way D socket A 25 way D socket to 9 way D socket is available as an option In all cases the standard cable length is 3 metres 9 feet longer cables are available on request please contact your local Spectra facility Other types of serial communication such as RS422 or RS485 may be possible depending on the types of control units being used Please refer RS422 and RS485 if you are using RS422 or RS485 CAUTION You must only use RS232 cables supplied with the equipment We cannot guarantee that other manufacturers cables will work correctly in Spectra RGA systems If you must use an RS232 cable not supplied with the equipment then
126. e then you can select Yes and the machine will shut down As long as the settings on the card match the settings that you have entered when you reboot the ports will work OK Step 4 Installing the software on the PC To install Multi RGA for Windows j Run up Windows 95 2 Insert the program Disk 1 in drive A or B if you prefer 3 Click on the Start button on the Taskbar and select Run from the start menu 4 Type a install or b install if you are using the drive B The Spectra Install window will be displayed The install options RGA for Windows Download Recall DDE Examples Macro Examples RGA for Windows Manual SP104001 Rev 2 50 Page 35 will be displayed You can select the product options by checking the appropriate products We strongly recommend you to install all the product options You may also change the default directory where RGA for Windows will be installed For the purposes of this manual we will assume you use the default C SPECTRA directory 5 Click on the Install button to begin the installation process You will be prompted to insert program Disk 2 and Disk 3 at the appropriate time 6 RGA for Windows will be installed on your hard disk and the Spectra folder will be created which will contain all the RGA for Windows program items 7 When the installation process has been completed the configuration warning box will then be displayed and you will be prompted to run the Configure program
127. e to be used as a general purpose fast scanning single channel trend mode The mode offers an audible tone the frequency of which is proportional to the peak height This allows leak checking to be performed when the screen cannot be seen An external speaker can be connected to the remote audio output socket on the RGA control unit for very large systems RGA for Windows Manual SP104001 Rev 2 50 Page 71 RGA for Windows Head 1 Leak Check y 2 File View Filament Multiplier Settings Mode Help slds INES UA ES E Range E 10 2 48 aa el 5 tE 2 gt wo wo 2 v 2 1 PON A o A RS e Mass 4 Offset 0 00 Enable disable the autorange feature _ 4 6 Guided Tour This section takes you step by step through the initial powering up of the instrument and will check that the system is operating correctly It ensures that the control unit has arrived in good working order that the analyser is installed properly in the vacuum chamber and that the link to your PC has been made The step by step guide will introduce you to many of the features available in RGA for Windows and also provides you with useful background information about how it operates 4 6 1 Before you start Before you can run through the guided tour the various components in the system must be installed and connected together correctly You should refer to the Unpacking and installation section of the RGA control unit m
128. e user but the other three can The default is no name and the head number n RGA for Windows Manual SP104001 Rev 2 50 Page 91 Head Name Preferences Application Title RGA for Windows Cancel Default l To change the head name select File Preferences Head Name from the menu bar the Head Name Preferences dialog box will be displayed The cursor will be positioned in the Application Title box and a new title may be typed in use the Delete and Backspace keys to remove the existing title Once the application title has been entered position the cursor in the Head Name box by moving the mouse pointer into the Head Name box and clicking the mouse button or press ALT H on the keyboard The new head name maybe entered which may be up to 24 characters long again use the Delete and Backspace keys to remove the existing name Click on the Ok button to accept the names and exit the Head Name Preferences window clicking on the Cancel button will exit without implementing any changes you have made To exit and use the default application and head names click on the Default button The head name is stored in the battery backed RAM in the control unit and is read by the RGA for Windows software at boot up This means that the control unit will retain its name even if it is moved Zeroing accuracy Mo With Microvision Plus RGA control units the accuracy with which zeroing measurements are made may be altered A choice of four settin
129. ectric fields field emission iv photon impact photoelectric emission v previous mechanical and or radiative chemical disturbance of the surface exoemission vi thermal energy thermionic emission Note Thermionic emission is the method used to generate electrons in the source which in turn create ions Faraday cage A charged particle detector consisting of a metal electrode cup shaped for the collection and detection of charged particles This geometry is used to prevent reduction of signal by suppression of secondary emission current Fingerprint spectrum RGA for Windows Manual SP104001 Rev 2 50 Page 220 A mass spectrum characteristic of a vacuum system associated leak or processing environment Foreline trap A vessel filled with molecular sieve or activated alumina to trap backstreaming oil vapours It is normally fitted between the high vacuum pump and rotary pump to prevent oil vapour backstreaming into the vacuum system Inert gas A gas which does not normally react chemically with other substances Ion Any atom or molecule which has resultant electric charge due to loss or gain of valence electrons Ion current The rate of ion flow Ion repeller The electrode in an ion source to which a potential is applied to provide an electric field which contributes to the initial acceleration of newly formed ions See ion source Ion source A combination of electrodes to which potentials are applied to ge
130. ecular flow The state of gas flow where the mean free path of the molecule is greater than the dimensions of the vacuum vessel so that molecules collide with the vessel wall rather than with other molecules Typically occurs below 7 5x10 5 torr Partial pressure The contribution that a gas component makes towards the total pressure Pressure gas The average normal force per unit area exerted by gas molecules impacting on a surface Real leak ngress of gas usually air into the vacuum system from the atmosphere outside the vacuum system Relative sensitivity RGA for Windows Manual SP104001 Rev 2 50 Page 222 The relative height of the base peak of a component compared to nitrogen measured at the same partial pressure This difference is due to differences in ionisation efficiency for different gases The indicated partial pressure on a mass spectrometer should be divided by the relative sensitivity factor to obtain the true partial pressure Resolving power The ability of a mass spectrometer to separate adjacent mass peaks Torr Unit of pressure 760 torr equals one atmosphere Total pressure The sum of all the partial pressures present within the vacuum chamber Transition or knudsen flow The flow of low pressure gas through a tube several mean free paths wide The flow is neither viscous nor molecular Under these conditions the microscopic concept of viscosity needs to be modified since the resistance to motion i
131. ed Do Events In Key Repeat Icon Bitmap File Setting Bitmap File Sat Debug Info Manual Colours Current Trip Available Current Trip Info Comm Port Configure Baud Rate RF Protect On Mass Range Max Sem Range DEGAS Section Start Power Power Step Time DISK STORE Section Timed Store Store Interval Number of scans Store at end of scan Store Hundredths LEAK CHECK Section Erange Auto Range Accuracy Prode Mass Offset Audio On LIBRARY Section Select mass Select enabled Select base MinSemRange 0 0 1 ICONCLIP BMP SETCLIP BMP 0 use default colours 1 1 forces the user to 3 FOR x1000 300 Pere RW CoO na RGA for Windows Manual SP104001 Rev 2 50 Page 242 Filename Spectra mdb Library On 0 Background On 0 Subtract On 0 MULTIPLIER CALIBRATE Section Mass 28 Mass2 14 Mass3 12 Mass4 18 Mass5 44 Manual Mass 28 Manual Erange inSemRange Manual Offset 16 Manual SEM Gain MinSemRange MULTI TREND Section Color Trend 0 Time Relative 1 Verticle Time Label 0 Label Trace 0 Interval 1000 PEAK JUMP Section Peak Surround 1 PORTS Section all in DIGIO INI Number Of 8255 0 8255n Base 0 8255n PortA 0 8255n PortB 0 8255n PortCH 0 8255n PortCL 0 PRINTER Section Logo On 1 Company Name Leda Mass Company Font Arial Portrait Size 20 Landscape Size 32 Print Peak Colour amp HFF0000 RGA for Windows Manual SP104001 Rev 2 50 Page 243 Logo
132. ed E 07 E 13 when the multiplier detector is on with a gain of x100 or E 08 E 14 when the multiplier detector is on with a gain of x1000 For any given range setting the detection system can detect signals in the range 0 00 to 9 99 in 0 01 steps i e 3 decades Obviously results in the range 0 00 to 0 10 have coarse step sizes and may be obscured by random baseline noise Peaks in the range 1 00 to 9 99 will give the best results in terms of signal to noise ratio and resolution In all modes the range is selected from a dropdown list box which always contains entries in the range E 5 to E 14 These values are not valid for certain Detector and Multiplier gain settings You can select any range and you will be notified of the changes in Detector settings should they be required In the Bar Chart Leak Check and Analogue modes the range may be changed either by clicking the range dropdown list box on the setting bar and clicking on a new range or by selecting Settings Range from the menu bar The mode Setting dialog box will be displayed click on the Range E dropdown list box and click on the required range in the dropdown list In the Peak Jump mode the range may be changed by clicking on the Channel button for the desired channel The Channel Setting dialog box will be displayed click on the Range E dropdown list box and then click on the desired value in the dropdown list In the Multi Trend and Fast Scan modes the range may be c
133. ed specifically to operate with a PC and has no built in data display just six LEDs on the front panel to give status indication The Vacscan Plus instrument has a built in CRT and can operate as a stand alone RGA without being connected to a PC When the Vacscan Plus is run from the PC under RGA for Windows it operates in a Satellite emulation mode and its screen display will mimic the six LEDs on the front panel of the Satellite When the Vacscan Plus is first powered up it assumes its stand alone mode only when it is connected to the PC via its RS232 port and RGA for Windows is booted up will it switch to the Satellite emulation mode Vacscan control units may also be used in RGA for Windows systems There are certain limitations when using a Vacscan Plus or Vacscan as a Satellite These are a Remote Vacuum Controller cannot be fitted an Analogue Output Module is limited to six channels the scan speeds are slower approximately 50 the Download feature cannot be used the maximum mass range capability is 200amu only RS232 serial communication is possible the RF Tuning and RF Select facilities are not available A mixture of different types of Spectra control units may be used in multi headed systems For instance a three headed system could be made up from a Satellite a Vacscan Plus and a Microvision Any limitations associated with a control unit would still apply e g you still cannot connect an RVC to a Vacscan Plus 3 16 Com
134. el window When the elapsed time is changed the existing peak data will be redrawn with the new time displayed To change from elapsed to real displayed time select View Time Label Display Elapsed Time from the menu bar Vertical label The time labels can be displayed vertically or horizontally To enable the vertical label select View Time Label Vertical Label from the menu bar Vertical time labels are not available if all vertical labels have been disabled from the File Preferences Vertical Labels menu item in the Mode Select screen Vertical labels use more Windows system resources Continuous trace The trace can be plotted as either dots with one dot representing each measurement or as a series of lines joining the dots To enable the continuous trace select View Continuous Trace from the menu bar Label trace When printing a trend to a black and white printer it is possible to label each RGA for Windows Manual SP104001 Rev 2 50 Page 138 trace with its channel number To enable this feature select File Label Trace from the menu bar When enabled this feature will increase the printout time considerably on some printers Colour trace If you have a colour printer installed you can print the trend traces in colour Similar colours are used on the printout to those displayed on the screen except for white which will appear as grey To enable disable this feature select File Colour Trace from the menu bar
135. ell 6 6 6 6 6 6 6 6 6 6 6 6 Settle 100 100 100 100 100 100 100 100 100 100 100 100 Mass Offset 16 16 16 16 16 16 16 16 16 16 16 16 Ratio Channels 0 0 0 0 0 0 0 0 0 0 0 0 VACUUM SCAN RGA for Windows Manual SP104001 Rev 2 50 Page 249 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 250 Appendix G Document Data Title RGA for Windows Help Manual Reference LP105010 Source DellIt D HelpMans RGA4 Win Original Revision 1 00 Current Revision 2 20 14 June 2000 Original Based On RGA for Windows Manual LP101005 Rev 2 40 History Rev 2 20 14 June 2000 LP101005 Rev 2 47 included LP210007 Rev 1 00 included LP210004 Rev 1 10 included Rev 2 10 22 May 2000 Fatal Error 53 Topic added Rev 2 01 19 May 2000 Cracking pattern table and rel ion Sens Re formatted Rev 2 00 22 Feb 2000 Complete re write into new format RGA for Windows Manual SP104001 Rev 2 50 Page 251 Index A About THIS Ma e deme o ads de cell 6 Accutane rated sake STA le es sevi T tA tek dle ela set eda 82 ACCULACY Niel Ah ial Se e 114 ACCC SSeez ache ee hc Na BREN ie AERA SI A A 39 40 41 42 O e ai 93 Al lol oia 130 136 Analog Inputs in a E abi 161 Anales doce Sethe haves es 68 70 142 analogue output 0 eeeeeeccceesceeseecsseeesereeseeeeeeeeececseeecesseeesseeessaeeseaeeeeseeenseees 93 Analogue Outputs si a Ad 154 ANALYSED st vr oitetet e o A a cae tata 13 Application 176
136. en height is the height of the RGA screen All four values are expressed in pixels RGA for Windows Manual SP104001 Rev 2 50 Page 169 6 2 9 Scan Delay Command Command SCANDELAY x where x is a number of scans This command is used to introduce a time delay expressed as a number of scans into the macro It will cause the macro to wait for the number of scans stated before continuing with the next instruction 6 2 10 Time Delay Command Command TIMEDELAY x where x is a time expressed in seconds This command is used to introduce a time delay expressed as a time in seconds into the macro It will cause the macro to wait for the specified time before continuing with the next instruction 6 2 11 Go To Command Command GOTO label This command is used as part of a loop and will cause the macro to branch to the label See examples 4 and 6 Labels must go on a separate line and be followed by a colon When the label is used following GOTO the colon should be omitted 6 2 12 Restart Command Command RESTART This is a single word command which will cause the macro to begin again from the start 6 2 13 Macro Examples Example 1 This macro contains a single line and will do the following switch to the analogue mode starting mass is 15 the mass span is 32 the accuracy is set to 3 the total pressure is enabled the grid is off the cursor is off the detector is set to faraday the range is E 09 and autoranging is
137. ences Disconnect Satellite On Exit from the menu bar in the Mode Select screen When disconnect is enabled a 4 will be shown before Disconnect Satellite On Exit When you exit RGA for Windows the Disconnect warning box will be displayed Click on the Ok button to disconnected the Satellite click on the Cancel button to shut down the Satellite and exit RGA for Windows Vertical labels The pressure label on the graphs in all scanning modes is vertical to save screen space for plotting and the time axis in Multi Trend may be either horizontal to give maximum screen area to the plot or vertical to allow the maximum number of time labels to be displayed While a standard installation of Windows will have fonts that can be rotated some PC s do not To prevent display problems the vertical labels may be disabled To do this select File Preferences Vertical Labels from the menu bar in the Mode Select screen To select Vertical labels for the time axis in Multi Trend vertical labels RGA for Windows Manual SP104001 Rev 2 50 Page 90 must be enabled in the File Preferences menu item in the Mode Select screen and the View Time Label Vertical Label in Multi Trend must also be enabled The other reason for the labels to display horizontally is if windows is running low on resources vertical labels do use more resources To check this select Help About just above the Ok button will be the line System xx Free If the System Resources s
138. es 4 5 and 6 Logical names take the form of COM1 COM2 etc and are used by the PC as a short hand to refer to a physical address base address and IRQ In the IBM PC and compatible computers a traditional relationship exists for COM to COM4 which is listed in table 3 The relationship is not physically fixed and it is quite possible to change the physical address allocated to any of these logical names using software In fact the ports program supplied with RGA for Windows allows you to do this and assign logical names to the 4 extra ports on our comms card RGA for Windows Manual SP104001 Rev 2 50 Page 39 Port Address IRQ Com 1 03F8h to 03FFh 4 Com 2 02F8h to 02FFh 3 Com 3 03E8h to 03EFh 4 Com 4 02E8h to 02EFh 3 3 18 Satellite Comms Card The Satellite communications card comms card has been designed to enable Spectra RGA control units to be connected to a PC for multi headed RGA applications If you are installing a multi headed RGA for Windows system you will almost certainly need to fit a comms card in your PC The majority of PCs have two built in serial ports Coml and Com2 Coml 1s usually used to connect a mouse leaving Com2 free to connect an RGA control unit in single headed RGA for Windows systems If both Coml and Com2 were being used a comms card would have to be fitted to run a single head In two headed systems the control units will usually be connected to a comms card leaving Com for the mouse and Com fre
139. exceeds the high alarm setting or falls below the low alarm setting the output of the relevant Aux I O pin is set true and an audio tone is generated if audio tone is enabled Multi Trend Channel Features In this mode most of the parameters and controls relate to individual channels All channel parameters can be set from the Channel Settings dialog box which is accessed by clicking on the mass label on the Key Panel The trend data is plotted in the colours indicated in the Key Panel Channel enabled The channel enabled parameter in the Channel Setting dialog box and the Colour panel in the Key Panel allow individual channels to be enabled or disabled To enable a channel check the Channel Enabled check box in the Channel Settings dialog box or click on the plot colour box in the Key Panel When disabled the plot colour box is reduced in size and the channel will be omitted from the scan Range When using the linear axis the range feature operates in a similar way to the other modes except each channel can have its own range To change the range click on the mass label in the Key Panel in the Channel Settings dialog box click on the Range E dropdown list box and then click on the required range in the drop down list box In Log Axis display all channels automatically autorange Autorange The Autorange feature operates in a similar way to the other modes except each channel can be set to autorange independently unless Log Axis display
140. figuration you choose will depend on your PC as well as the number and type of peripheral devices you have connected The two important things to note are you will have to allocate a Comms Port for each RGA control unit you want to connect you need one IRQ for all the RGA control units connected regardless of the number but no other devices must use this IRQ The majority of PCs have two built in serial ports usually referred to as Com 1 and Com 2 and use addresses 03F8 03FF and 02F8 02FF respectively The interrupt request lines used for Com 1 and Com 2 are IRQ4 and IRQ3 respectively Great care should be taken when selecting port numbers Com1 to Com12 and IRQ lines since their use may vary from one type of compatible PC to another Before fitting a comms card or attempting to install RGA for Windows you should be familiar with the configuration of your PC Our standard configuration for the Satellite comms card is J9 link 3 to 4 which sets Port 1 address 0280 to 0287 Port 2 address 0288 to 028F Port 3 address 0290 to 0297 Port 4 address 0298 to 029F RGA for Windows Manual SP104001 Rev 2 50 Page 42 J13 link 1 to2 which sets Port to the same IRQ as Ports 2 to 4 J8 link 5 to 6 which selects IRQ 5 for the four Ports Unless you specified otherwise your comms card will have been supplied with the above configuration The comms card should be installed in accordance with the PC manufacturers instructions for th
141. ge connector Port3 fitted to a flying lead connected to PLG 6 on the PCB Port4 fitted to a flying lead connected to PLG 2 on the PCB 3 18 2 Setting the physical address The Physical Address is set by the three jumpers J8 J9 and J13 You should check against the following tables to ensure the required configuration is obtained Four setting options are available for the address decoding of the four ports Jumper J9 is used to select the required option J9 PORT1 PORT2 PORT 3 PORT 4 no link 03F8 02F8 03E8 02E8 3 4 0280 0288 0290 0298 1 2 02A0 02A8 02B0 02B8 1 2 amp 3 4 03E8 02E8 02A0 02A8 Note that there are 8 bytes per port Each of the four ports generates its own IRQ interrupt request Under normal circumstances the four IRQs are ORed together and connected to a single IRQ line Jumper J8 sets which IRQ line is selected The table below shows the various options 8 IRQ E IRQ 3 4 IRQ 4 6 IRQ 5 8 IRQ7 10 IRQ 2 WO JJ UY Uy CG The IRQ setting for Port 1 has the additional capability of connection to IRQ RGA for Windows Manual SP104001 Rev 2 50 Page 41 4 or to the same IRQ as the other ports This is governed by the setting of jumper J13 J13 IRQ 1 2 same as ports 2 3 and 4 2 3 IRQ 4 Jumpers Jl J2 J3 J4 J5 J6 J7 J10 J11 J12 J14 amp J15 control the handshaking lines for the various ports The setting of these links should not be altered 3 18 3 Choosing the configuration The con
142. gs 0 1 2 and 3 is available with 3 giving the most stable measurements but requiring the most time To alter the zeroing accuracy from the mode select screen select File Preferences Zeroing Accuracy and click on the required setting a 4 tick will be shown next to the currently selected accuracy code The RGA for Windows Manual SP104001 Rev 2 50 Page 92 actual number of zero readings taken is y zeroing accuracy code Alarm and analogue output The Aux I O port on the RGA control unit may be used to provide alarm output signals or it may be used to drive an Analogue Output Module To use the port for alarm outputs from the mode select screen select File Preferences Satellite Analogue Output To use the port to drive an Analogue Output Module select File Preferences Satellite Alarm Output from the mode select screen If a Remote Vacuum Controller is connected to the Aux I O port of your control unit neither of the above options will be available Password and Lock To prevent unauthorised use of the PC running RGA for Windows the system can be locked using a password When locked all mouse and key strokes are disabled for windows applications Any input will cause the System Locked window to be displayed for 5 Seconds during which time the correct password can be entered and the lt ENTER gt key pressed to unlock the system Initially no password is defined If you attempt to lock the system with no password defined you w
143. h but the actual value can still be increased or decreased further by continuing to move the mouse With this method of setting the High Alarm the maximum possible range of values 9 9E 05 to 1 0E 18 is shown Low alarm The Low Alarm Enable and the Low Alarm parameters are displayed in the Channel Settings dialog box The Low Alarm parameter is the partial pressure that must be exceeded to deactivate the alarm When enabled the Low Alarm arrow symbol will appear to the right of the peak plot When disabled the Low Alarm arrow symbol will disappear The range over which the Low Alarm operates depends on the type of detector the instrument is fitted with For all detectors the highest pressure setting is 9 9E 05 with 0 1 steps The lowest setting is 0 1E 11 for faraday only systems 0 1E 13 for x100 gain multipliers and 0 1E 14 for x1000 gain multipliers RGA for Windows Manual SP104001 Rev 2 50 Page 130 To enable the Low Alarm click on the Low Alarm check box in the Channel Settings dialog box to check it The Low Alarm setting may then be entered via the Mantissa box and the Range E dropdown list box Click on the spin buttons to adjust the Mantissa Click on the Range E dropdown list box and select the required value from the dropdown list by clicking on it The values in the Range E dropdown list will depend on the type of detector your system is fitted with The other way of setting the Low Alarm once it has been enabled is to drag t
144. h the required bit set A binary 1 sets the bit and the mask is expressed as a hex number In the DIGIO INI file at the end of this section 24 signals are defined for a PC DIO24 card with a base address of amp H300 Signals 1 to 8 are on the 8255 port A bits 0 to7 respectively Signals 9 to 16 are on the 8255 port B bits 0 to7 respectively Signals 17 to 24 are on the 8255 port C bits 0 to7 respectively Channel to signal allocation The last part of the configuration process is to attach the alarm output from each channel in the Peak Jump Multi Trend and Fast Scan modes to one of the signals specified in the DIGIO INI file The association is specified in the CHANNELS section of the RGA4WIN INI RGA4WINn INI for Multi RGA for Windows file using the following format PC Alarm Signal s1 s2 s12 Where sl Signal number for Channel 1 alarm output s2 Signal number for Channel 2 alarm output The default settings in a single headed system are Channels 1 to 12 are associated with Signals 1 to 12 respectively RGA for Windows Manual SP104001 Rev 2 50 Page 157 The entry in the CHANNELS section of the RGA4WIN INI file would be PC Alarm Signal 1 2 3 4 5 6 7 8 9 10 11 12 The default settings in a multi headed system are Channels 1 to 12 on head 1 are associated with Signals 1 to 12 respectively Channels to 12 on head 2 are associated with Signals 13 to 24 respectively Channels to 12 on head 3 are associated wi
145. hanged Add New Hardware Wizard D Input Output Range 03F8 O3FF Interrupt Request 10 Just select Next gt to accept the settings 6 At the sixth and final page RGA for Windows Manual SP104001 Rev 2 50 Page 30 Add New Hardware Wizard Windows has finished installing the software necessary to support your new hardware Cancel click on the Finish button 7 You will see the following message System Settings Change 2 To finish installing your hardware you must shut down your computer turn it off and install the card for your hardware E now Do you want to shut down your computer now Select No so that the machine does not re boot Repeat the above steps for each comm port that you want to add Once all the ports are added all that remains is to configure the correct settings System 1 Select the icon from Control Panel RGA for Windows Manual SP104001 Rev 2 50 Page 31 2 Select the Device Manager tab at the top of the window and then expand the Ports COM amp LPT branch by clicking on the sign System Properties H E Disk drives c Display adapters 23 Floppy disk controllers Hard disk controllers Keyboard Modem Monitor Mouse BY Network adapters Other devices Ports COM amp LPT Communications Port COM1 Commur ort C 9 ECP Printer Port LPT1 I U S Robotics x2 Winmodem Voice COM2 h A eect tal For each comm port that you
146. hanged by clicking the appropriate Mass box in the Key panel for the desired channel The Channel Setting dialog box will be displayed click on the Range E dropdown list box and then click on the desired value in the dropdown list 5 1 16 Autorange The autorange feature enables the range of the instrument to be adjusted RGA for Windows Manual SP104001 Rev 2 50 Page 115 automatically as the partial pressures vary over a large number of decades If a partial pressure exceeds a value of 9 60 the range will be decreased by one decade until the minimum range for the selected detector is reached If the partial pressure is less than 0 70 then the range is increased by one decade until the range is one decade less than the maximum range for the selected detector Autoranging will only occur when a filament is switched on Autorange performs the same basic function in all the scanning modes but the details vary slightly In Bar Chart and Analogue modes an autorange operates on the value of the largest peak scanned whereas in Peak Jump and Multi Trend modes each channel may be autoranged independently In Leak Check the autorange feature operates on the selected probe gas In the Bar Chart Leak Check and Analogue modes autoranging may be turned on and off either by clicking the Autorange button on the setting bar or by selecting Settings AutoRange Enabled from the menu bar In Peak Jump the autorange may be enabled by clicking the appropriat
147. he Low Alarm symbol to change its value If the alarm value is outside the current display range it will be shown at either the top or the bottom of the graph but the actual value can still be increased or decreased further by continuing to move the mouse With this method of setting the Low Alarm the maximum possible range of values 9 9E 05 to 1 0E 18 is shown Peak Jump Channel Features In this mode most of the parameters and controls relate to individual channels All channel parameters can be set from the Channel Settings dialog box which is accessed by clicking on the channel button The channel button is the button under the peak indicating the mass number for that channel Channel enabled The channel enabled parameter in the Channel Settings dialog box allows the channel to be enabled or disabled When disabled the channel will be omitted from the scan and the Peak surround if enabled will not be displayed To enable the channel check Channel Enabled Range The range feature operates in a similar way to the other modes except each channel can have its own range To select a range click on the Range E dropdown list box in the Channel Settings dialog box then click on the required range from the dropdown list Autorange The Autorange feature operates in a similar way to the other modes except each channel can be set to autorange independently In logarithmic mode all channels autorange automatically regardless of the setting To s
148. he fault you should perform the following tests in the order listed RGA for Windows Manual SP104001 Rev 2 50 Page 207 e Run the diagnostics with the RF head disconnected from the control unit If the fault still occurs then the problem is with the control unit You should consult you local agent for information about how to proceed However if all the power supply tests now pass you should proceed with the next test e Run the diagnostics with the RF head connected to the control unit but disconnected from the analyser If the fault occurs now then the problem is with the RF head Again you should contact your local agent for further information If it passes this test then the fault is with the analyser and you should proceed with the next test e Ifyou have access to an ohm meter you can check for short circuits to ground within the analyser To do this follow the instructions in the Analyser Maintenance section of the control unit manual 9 7 2 Failed filaments A filament is in a failed state when it has been selected but the emission current flowing is not the pre set value normally 1 mA It is important to note that the supply to a failed filament may still be on if the Filament Protect Filaments Filament Off when failed option has not been selected and that if the cause of failure is removed the filament will start working There are many possible causes of filament failure The most common with suggested actions are lis
149. his item to start RGA for Windows using the previous session parameters This is the way you will normally start RGA for Windows RGA Reset Double click on this item to start RGA for Windows using the default parameters Use this item when you first start RGA for Windows or after a software upgrade Configure This runs the configure program allowing the selection of the comms ports RGA Help The help files are contained in a separate program and may be RGA for Windows Manual SP104001 Rev 2 50 Page 19 opened by double clicking this icon clicking on the Help button or selecting Help whilst running RGA for Windows Ports This is a utility program allowing custom configuration of multiple comms ports It is designed primarily for multi headed systems and systems where Spectra Satellite Comms cards are being used Please refer to Ports and Addresses for further details Uninstall This utility is used to remove RGA for Windows from your hard drive The Install disks will be required to complete this operation DDE Test This test program is used with the DDE Links feature and is described in DDE Links Download This is used to upgrade the code in a Satellite control unit refer to Download Recall Recall is a separate program which allows the review of RGA for Windows data files obtained using the Disk Store feature described in Disk Store Please refer to the Recall manual Recall Help Recall has its own help files stored as a
150. how much below 20 free you should close down one or more applications Decimal places Readings can be displayed to an accuracy of one decimal place rather than the usual two decimal places To do this select File Preferences Display One Decimal Place from the menu bar in the Mode Select screen Select icons Three styles of buttons used on the icon bar and setting bar are available The Normal icons are predominantly grey and blue in keeping with the current trend in Windows software packages The Bright icons use more colours in an attempt to group buttons with related functions together The Mono icons are black and white primarily used to provide screens to print in this manual but users with mono chrome monitors or mono chrome LCD laptops may find them useful To change the icon style select File Preferences Select Icon from the menu bar in the Mode Select screen The Select Icon Buttons window will be displayed click on the appropriate radio button then click on the Ok button Head names To give an RGA Head a name which relates to its situation is a useful feature particularly in multi headed systems Using the name Sputter Chamber maybe far more meaningful than Head 1 The head name is displayed at the very top of each screen in the Title Bar and is made up of four parts The application name which by default is RGA for Windows the head name the head number and the screen name The screen name cannot be changed by th
151. ier in the Key panel will change from one colour to two colours to indicate which channels are being ratioed The channel used for the ratio must be enabled in order to obtain a ratio value The trend displayed will the partial pressure measurement not the ratio High alarm The High Alarm Enable and the High Alarm parameters are displayed in the Channel Settings dialog box The High Alarm parameter is the partial pressure that must be exceeded to activate the alarm The range over which the High Alarm operates depends on the type of detector the instrument is fitted with For all detectors the highest pressure setting is 9 9E 05 The lowest setting is 0 1E 11 for faraday only systems 0 1E 13 for x100 gain multipliers and 0 1E 14 for x1000 gain multipliers The alarm value may be set in 0 1 steps To enable the High Alarm click on the High Alarm check box in the Channel Settings dialog box to check it The High Alarm setting may then be entered via the Mantissa box and the Range E dropdown list box Click on the spin buttons to adjust the Mantissa Click on the Range E dropdown list box and select the required value from the dropdown list by clicking on it The values in the Range E dropdown list will depend on the type of detector your system is fitted with Low alarm The Low Alarm Enable and the Low Alarm parameters are displayed in the RGA for Windows Manual SP104001 Rev 2 50 Page 147 Channel Settings dialog box The Low Alarm par
152. ill be prompted to enter a new password The password may be changed by selecting File Set Password from the menu bar in the Mode Select window If a password has been set you will be asked to enter the current password before entering the new password You will be prompted to enter the password a second time this reduces the chance of typing errors being included in your password Click on the Ok button to accept the password clicking on the Cancel button will close the Password dialog box without the password being saved To lock the system select the File Lock System menu item from the menu bar or press CTRL L from the keyboard This can be done from any mode you will be asked to enter the password then click on the Ok button to lock the system This feature cannot prevent the rebooting of the system using a Hardware reset lt CTRL gt lt ALT gt lt DELETE gt software reset or switching off the PC Should any of these methods be used when the system was locked when RGA for Windows is next run the system will lock automatically RGA for Windows Manual SP104001 Rev 2 50 Page 93 It is recommended that the RGA for Windows password not be used in conjunction with the windows screen saver with password If it is it and the screen saver is active it will be necessary to move the mouse enter the Windows screen saver password followed by the RGA for Windows password Clipboard RGA for Windows is able to copy whole scans to the clipb
153. ilt In 2 2 None None 02F8 3 Comms Card 1 3 1 1 0280 5 Comms Card 2 4 1 2 0288 5 Comms Card 3 5 1 3 0290 5 Comms Card 4 6 1 4 0298 5 None 7 None None Off Off None 8 None None Off Off None 9 None None Off Off 3 28 2 Two Comms Cards Fitted Port Com Group Head Base Address IRQ Built In 1 1 None None 03F8 4 Built In 2 None None None 02F8 3 1st Comms Card 1 2 1 1 0280 5 1st Comms Card 2 3 1 2 0288 5 1st Comms Card 3 4 1 3 0290 5 1st Comms Card 4 5 1 4 0298 5 2nd Comms Card 1 6 2 1 02A0 5 2nd Comms Card 2 7 2 2 02A8 5 2nd Comms Card 3 8 2 3 02B0 5 2nd Comms Card 4 9 2 4 02B8 5 3 29 Upgrading From Earlier Versions 3 29 1 RS232 cable Users who are upgrading from earlier versions of RGA for Windows software may need to modify the RS232 cable If you encounter either of the following error messages Noise has been detected on the Carrier Detect line of the RS232 interface RGA for Windows Manual SP104001 Rev 2 50 Page 54 which may degrade the performance of your system Refer to the trouble shooting section of the RGA for Windows manual OR Noise has been detected on the Ring Indicator line of the RS232 interface which may degrade the performance of your system Refer to the trouble shooting section of the RGA for Windows manual then you definitely need to modify the cable WARNING This work must only be carried out by a competent person If in any doubt contact your local agent for a replacement cable To do this
154. ing the range to 10 the faraday detector is selected auto ranging is disabled the low alarm setting is set to 1x10 mbar and the high alarm setting is set to 1x10 mbar The last line of the macro switches the instrument to the peak jump mode and the channel settings in the first six lines of the macro will be used In the peak jump mode the accuracy will be set to 3 the grid will be on the cursor will be off the global multiplier setting will be off peak surround will be set to on the total pressure measurement will be on the logarithmic mode is selected the low log range is 10 and the high log range 10 SETCHANNEL 1 1 5 5 0 0 0 0 SETCHANNEL 2 1 10 6 0 0 0 0 SETCHANNEL 3 1 15 7 0 0 0 0 SETCHANNEL 4 1 20 8 0 0 0 1 0E 6 SETCHANNEL 5 1 25 9 0 0 1 0E 8 0 SETCHANNEL 6 1 30 10 0 0 1 0E 8 1 0E 6 MODE PEAKJUMP 3 1 0 0 1 1 1 5 10 RGA for Windows Manual SP104001 Rev 2 50 Page 172 Example 6 This macro will start by switching the instrument into the barchart mode then enters a loop which will wait for 2 minutes before printing the scan It then continues to print a scan every two minutes MODE BARCHART MAINLOOP TIMEDELA Y 120 PRINT GOTO MAINLOOP RGA for Windows Manual SP104001 Rev 2 50 Page 173 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 174 Section 7 DDE Links New to V2 30 If you are already using RGA for Windows and are upgrading to version 2 30 you may wish
155. ion Microvision Plus and Vac Check 100 systems the RF head referred to above is part of the relevant control unit 9 8 3 Factory default settings Two sets of tuning parameters are associated with each RF head analyser pair These are the default settings and the user settings When RGA for Windows is installed the user setting and the default settings are identical and are set to the values determined during production for each of the sensor packages supplied When RGA for Windows is run the user settings are used to tune the RF head If the tuning parameters are altered from the RF Tuning dialog box then the user settings are altered not the default settings The default settings may be restored to the user settings at any time To do this click the Defaults button in the RF Tuning dialog box and then click Ok RGA for Windows Manual SP104001 Rev 2 50 Page 211 9 8 4 Selecting the RF head Analyser If you only use one sensor package with the RGA for Windows it will not be necessary to select the RF head Analyser pair The only function that will be available is to add a new RF analyser combination from the Current RF Analyser pair list box in the RF Tuning dialog box If you use more than one sensor package the correct RF Analyser pair must be selected before use This is done from either the Setting RF Select menu or from the RF tuning dialog box 9 8 5 Adding RF head Analyser combinations The RF head analyser combinations
156. is used when all channels automatically Autorange Click on the Autorange check box in the Channel Settings dialog box to enable autoranging for a channel RGA for Windows Manual SP104001 Rev 2 50 Page 135 Mass The mass parameter determines the type of measurement made in the channel Normally it will be the mass number when a partial pressure measurement is to be performed e g 28 for Nitrogen 32 for Oxygen 18 for Water etc To adjust the mass in the Channel Settings dialog box click on the increment or decrement spin button or click on the Mass box and type in the required value Alternatively you may select either total pressure TOT or one of the built in analogue inputs When using the increment decrement buttons TOT AIl and AI2 can be selected by decrementing below mass 1 or they may be typed in Multiplier Each channel can use either the faraday or multiplier detector independently The Multiplier check box is used to enable or disable the multiplier detector If it is not checked the peak will be measured using the faraday detector When checked the multiplier detector will be used for that channel providing the global multiplier control has been enabled The multiplier button on the icon bar controls and indicates the current global multiplier setting If the global multiplier is not enabled when multiplier is selected in a channel that channel will not be read As with other modes the multiplier gain can be set to x100 o
157. isplayed Click on the mass span dropdown list box and then click on the required value Logarithmic Axis Bar Chart The logarithmic mode can be enabled and disabled by either pressing the Log button on the setting bar or using the Setting Log Axis menu item There is also a Log Axis check box in the Bar Chart Settings window When logarithmic mode is enabled the Range box on the setting bar will not be shown and Autoranging is automatically enabled Note that when the logarithmic axis is selected a complete scan will consist of a scan of the selected masses on each of the selected gain ranges The scan dot may appear to pause and jump over masses this is done to save time and increase the scan speed The x axis label will change between Mass a m u and Scanning E nn to re assure the user that the instrument is functioning correctly Log axis start E This parameter is set from the Settings Log Start Range or from the Bar Chart Setting window which is accessed using the Settings Set All menu item It is the highest pressure range that will be used during the scan and partial pressures up to 9 99 on this range will be displayed This control is only enabled when Logarithmic mode is selected To set it click on the Log Axis Start E dropdown list box and then click on the required value Log axis end E This parameter is set from the Settings Log End Range or from the Bar Chart Setting window which is accessed using the Setting
158. jor peaks in the spectrum ignore all the smaller ones to start with Search through a reference library for spectra with the same major peak Secondary peaks At some mass numbers there is the possibility of more than one component being present when using the base peak reference method of identification With the exception of mass 28 identification is usually possible with the knowledge of which gases have been introduced into the vacuum system For example at mass 43 unless acetone or n butane have been used in the system or the cleaning of vacuum components it is unlikely that a peak at mass 43 is due to these compounds Comparing the secondary peaks from the reference library confirms the match and would show that the peak had most likely originated from rotary pump oil which can be confirmed by checking the presence of other peaks typical of this oil At mass 28 unless ethylene or ethane have been used in the vacuum system the most likely source will be nitrogen or carbon monoxide or a mixture of the two Nitrogen is identified by checking mass 14 which is approximately 5 of the base peak intensity The mass 28 contribution due to nitrogen can therefore be calculated The remainder of mass 28 will be due to carbon monoxide confirmed by the presence of a mass 12 peak of approximate intensity of 5 of the base peak In practice mass 28 is always present as it originates from chemical reactions of oxygen and carbon containing materia
159. l be either E2 or E3 The multiplier gain may only be changed when the multiplier is switch on when the multiplier is off the Multiplier Gain menu item is grayed out Multiplier Trips The multiplier is a delicate device and to avoid damage it should not be switched on at high pressures To help protect the multiplier and extend its life it may only be switched on when a filament is on and working If the multiplier is on and the filament is switched off fails or trips off then the multiplier will trip off It may not be switched back on until a filament is back on and working 5 1 10 RF Select This feature is only available with RGA control units which support RF power supply tuning from the PC keyboard RF select is available with all Microvision Microvision Plus and Vac Check 100 instruments RF select is not available with Vacscan and Vacscan Plus instruments but is available with Satellites with LM46 and LM61 serial numbers Mass alignment and resolution settings are stored as part of the RF tuning procedure and settings for various analyser RF combinations may be saved To change to a different set of tuning settings select Settings RF Select from the menu bar the R F Select dialog box will be displayed Click on the Current RF Analyser Pair dropdown list box then click on the required RF Analyser combination then click Ok RGA for Windows Manual SP104001 Rev 2 50 Page 107 RF power supplies and analysers are referred
160. lar scan Releasing the left mouse button will cause the partial pressures and time of the current scan to be displayed In all other modes the cursor information is shown in the cursor panel at the top of the graph As you drag the mouse from side to side the mouse cursor will hop to the top of the adjacent partial pressure reading and update the cursor information In Bar Chart Analogue and Peak Jump modes the cursor position is fixed to the current mass or channel when the left mouse button is released The partial pressure reading is then updated each time that mass or channel is scanned In Leak Check the current reading is displayed when the left mouse button is released In all modes the cursor can be enabled by either clicking on the Cursor button on the setting bar or selecting View Cursor from the menu bar 5 1 19 Set All Selecting Settings Set All or pressing CTRL E causes the settings box for the current scanning mode to be displayed so that any of the operating parameters may be altered 5 2 Operating Modes 5 2 1 Bar Chart The following topics are specific to the Bar Chart mode Bar Chart Overview First Mass Bar Chart Mass Span Bar Chart Logarithmic Axis Bar Chart Library Background RGA for Windows Manual SP104001 Rev 2 50 Page 117 The following general topics apply to the Bar Chart mode Disk Store Printing Multiplier Detector Accuracy Range Autorange Total Pressure Measurement T
161. lectron Energy Passed High Mass Resolution 17 Filament Current Off 0 034 There are some differences in the information displayed in the Diagnostics window depeding on the control unit type but it is not important at this stage RGA for Windows Manual SP104001 Rev 2 50 Page 78 Note that if your system only has the Faraday detector fitted then the result of the multiplier supply test will show Not fitted rather than Switched off If any test fails you should refer to the Trouble shooting section of this manual for information about how to proceed Also note that the Diagnostics dialog box contains a software section giving the version numbers of the various programs in the system If you have to contact your local service centre at any time this information is vital for our service engineers Now click the Ok button to close the Diagnostics dialog box 4 10 Setting a Total Pressure Trip The total pressure trip can provide a limited amount of protection to the filaments if they are operated at pressures higher than the preset level It is not guaranteed to prevent damage to the filaments but may limit the amount of damage caused if they are operated at too high a pressure The sequence of operations specified in the guided tour will ensure that the maximum possible protection is given to the filaments so it is not necessary to understand the total protect mechanism at this time We do however recommend that you read
162. liberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 4 Section 2 Introduction 2 1 Introduction RGA for Windows is a powerful yet easy to use Residual Gas Analysis software package developed to run on an IBM or compatible personal computer PC running Microsoft Windows in conjunction with the Spectra range of quadrupole mass spectrometers This manual aims to provide full details and operating instructions for the software package Some parts of the manual should be followed carefully and not be missed other parts are provided as a reference and are designed to be referred to when needed Information relating to the instrument hardware RGA control unit RF head analyser can be found in the appropriate instrument manual If the RGA for Windows software was purchased as part of a complete system all the instrument manuals should be contained in the one 23cm 9inch x 21 5cm 8 5inch white three ring binder which also contains the software disks RGA for Windows will operate with Windows 3 1 or greater or Windows 95 Getting Help About This Manual Software Versions 2 2 Getting Help We are always pleased to provide assistance where we can If you are experiencing any difficulties or need help please feel free to call your local Spectra facility and ask for the service department Please have the following information ready so that our technical staff may help you quickly and effectively 1 The serial nu
163. lick on the increment 1 button and notice how the Mass a m u scale has increased from 0 through 50 to 0 through 100 Now click on the decrement J button and see the Mass a m u scale return to 0 through 50 click on the decrement 4 arrow two more times the scale should change to 0 through 20 and then 0 through 10 The scan dot should now be moving very quickly leave the mass span set to 0 to 10 amu Again this will ensure that the total pressure trip operates as quickly as possible 4 11 3 Total pressure measurement At this point it is worth mentioning the total pressure measurement facility The quadrupole mass spectrometer is really a partial pressure measuring device and the total pressure measurement capability can be thought of a bonus feature You may have noticed that when the scan dot reaches the end of the mass scale it pauses before starting the next scan This is when the total pressure measurement is taken By setting up the instrument so that it RGA for Windows Manual SP104001 Rev 2 50 Page 82 scans as quickly as possible accuracy code 0 mass span 10 the maximum possible number of total pressure readings per unit time are being taken Therefore the Total Pressure trip will operate as quickly as possible giving the greatest chance of switching off the filaments before they burn out if the pressure in the vacuum chamber is too high 4 12 Switching a Filament On CAUTION Operating the instrument at pres
164. ls at the filaments of mass spectrometers ion gauges etc RGA for Windows Manual SP104001 Rev 2 50 Page 225 Typical fingerprint spectra The fingerprint spectrum is a mass spectrum which is characteristic of the vacuum system from which it is taken The term is extended to include spectra which are characteristic of problems or faults commonly encountered in vacuum systems The following fingerprints typify some of these problems and it should be remembered that a vacuum system could show a combination of two or more of these fingerprints Air leak Recall C MANUALS RGA4WIN DRAWINGSI AIR WBG 1 Goto View Window Help lelzl laja LLL L llel WE Scan1of1 26July 1995 21 23 58 be w x co o Lo o El 3 D o E E a 40 50 Mass a m u Characteristic spectrum of an air leak masses 28 and 14 from nitrogen 32 and 16 from oxygen 40 from argon To locate the leak tune the quadrupole to mass 4 helium and probe all joints welds and feedthroughs etc with helium An increase in the helium peak on the mass spectrometer indicates the source of the leak It is usually worth checking freshly made joints or newly added components first as these are the more likely sources of leaks on a previously leak tight vacuum system RGA for Windows Manual SP104001 Rev 2 50 Page 226 Water vapour Recall C MANUALS RGA4WIN DRAWINGS WATER WBG 1 File Goto View Window Help HERRERA Scan 1 of1
165. mbers of the analyser RF head and control unit each of these numbers begins with the letters LM 2 The information displayed in the diagnostics window refer to section Diagnostics RGA for Windows Manual SP104001 Rev 2 50 Page 5 3 The information displayed in the Help about form To access this select Help About from the menu bar 2 3 About This Manual 2 3 1 Text Conventions As far as possible RGA for Windows uses a format and conventions common to other Windows software packages The following text formatting conventions are used throughout this manual Italic type Windows terms You can refer to your Windows manual for more information Bold names on buttons names of menus Words or characters you should type Example if the manual instructs you to type cd spectra you type the lowercase letters cd followed by a space and the lowercase letters spectra names within dialog boxes Keyboard Conventions Function key names are written in uppercase letters Example the Control key is written CTRL the Escape key ESC Where keys need to be pressed simultaneously the sign is used Example ALT F1 means hold down the ALT key while pressing the F1 key Where keys are pressed in sequence commas are used Example ALT C D would mean press the ALT key then press C then press D Where one of the four arrow keys is referred to the appropriate symbol is used enclosed in parentheses Example up arrow is written 1 Mo
166. mm ports the warning may also occur To correct this situation refer to RF Tuning RGA for Windows Manual SP104001 Rev 2 50 Page 203 9 4 Background and Library Error 9 4 1 Corrupted database Error message The Library Background database has been corrupted Restore your backup copy of PATH AND NAME OF LIBRARY If the Library Background database has become corrupted it can no longer be read and you must over write it with either a back up copy or the original Library database from the Distribution Disk 9 4 2 VBDB300 DLL Error message Cannot find VBDB300 DLL The library feature is disabled A file needed to use the Background Library database has been deleted re install from Distribution Disk 9 4 3 Cannot find library Error message Cannot find library PATH AND NAME OF LIBRARY The library feature is disabled The Library Background database has been renamed or deleted Either put the original file from the Distribution Disk into your RGA for Windows directory or restore your Library Background database 9 4 4 Library select failed Error message This library select failed to find any matching spectra The select criteria has been disabled and all library spectra are selected A library search failed to find any matching spectra In this case all library spectra are selected RGA for Windows Manual SP104001 Rev 2 50 Page 204 9 4 5 Background deleted Error message Selected backg
167. n O real time x axis 1 relative time x axis 0 time label horizontal 1 time label vertical O linear y axis 1 log y axis 5 to 14 E 05 to E 14 must be less than Log High Range 5 to 14 E 05 to E 14 must be greater than Log Low Range Variable l to 12 disabled l RGA for Windows Manual SP104001 Rev 2 50 Page 182 RGA4WIN RGA 7 7 Disk Command Application Topic Mass Display Range Mass Display Range SETCHAN SEM setting NEL Autorange Low Alarm High Alarm Dwell Settle RGA4WIN ANALOGUE LEAK CHECK BAR CHART PEAK JUMP MULTI TREND FAST SCAN DISKFILENAME filename Set the filename including drive and path specification to be used for the disk store Note No confirmation will be given before an existing file is overwritten If the path does not exist or an invalid filename is specified then the command will fail DISKSCANS n n 1 32000 scans This is the maximum number of scans to be stored You can terminate a disk store at any time using the DISKSTOP command enabled l to max mass of instrument 0 total pressure 1 amp 2 analogue input 1 and 2 5 to 14 E 05 to E 14 1 to max mass of instrument 0 total pressure 1 amp 2 analogue input 1 and 2 5 to 14 E 05 to E 14 O faraday 2 mult x100 3 mult x1000 0 disabled 1 enabled 0 off 9 9E 05 to 0 1E 14 0 off 9 9E 05 to 0 1E 14 2 x0 2 milliseconds where n 0 to 14 8 to 9900 milliseconds RGA f
168. n Multiplier SEM MUST NOT be operated at temperatures above 50 C RGA for Windows Manual SP104001 Rev 2 50 Page 101 With dual faraday and electron multiplier detector instruments serious damage will be caused to the electron multiplier if it is operated at temperatures above 50 C Where instruments use a standard RF power supply the RF must be removed to bake out so there is no chance of the multiplier inadvertently being switched on It is possible to run instruments using RF power supplies fitted with a bakeable adapter during a bake out In this case only the faraday detector should be used NOT the multiplier No damage is caused to the multiplier by high temperatures provided it is not switched on The only remedy when a multiplier has been damaged due to being operated at higher temperatures is to replace it THIS IS AN EXPENSIVE REPAIR Switching off and on To switch the multiplier on click on the Multiplier button on the icon bar or select Multiplier Multiplier On from the menu bar When the Multiplier button is depressed the multiplier is on If the M on the Multiplier button and the Multiplier Multiplier On are grayed out then either no filaments are on or the instrument only has a faraday detector In the channel modes the detector for individual channels must also be selected from the Channel Setting dialog box Calibration To set the gain of the multiplier to be a factor of x100 and x1000 it must be calib
169. n a multiplier has been damaged due to being operated at higher temperatures is to replace it RGA for Windows Manual SP104001 Rev 2 50 Page 59 This page is deliberately left blank RGA for Windows Manual SP104001 Rev 2 50 Page 60 Section 4 Getting Started 4 1 Getting Started Introduction This manual assumes that you are familiar with the Windows environment We have made every effort to use the standard windows terminology so that you can quickly refer to the Microsoft Windows manual for detailed information about specific windows topics In addition to the standard Windows terminology some terms are defined which describe controls and concepts used within RGA for Windows The basic operation of RGA for Windows and its terminology are introduced in this section Also included in this section is a quick general introduction to the subject of Residual Gas Analysis The modes of operation and techniques employed within the RGA for Windows package are also introduced At the end of this section we include a guided tour of RGA for Windows We strongly recommend that you take the time to run through the tour since it will give you a basic understanding of how to use RGA for Windows and will check that the complete system is operating correctly RGA for Windows Basics Parts of RGA for Windows Controls Quadrupole RGA Guided Tour Running RGA for Windows Running Diagnostics Setting a Total Pressure Trip Starting the Bar
170. n on the Taskbar select Programs Spectra then click on the RGA Reset item for single headed systems or RGA Multiplexer Reset for multi headed systems After a few seconds the following message box will be displayed RGA for Windows Manual SP104001 Rev 2 50 Page 73 RGA for Windows gt You have requested a power up reset This will reset all of the mode parameters Are you sure you want to reset the parameters click on the Yes button to start RGA for Windows using a power up reset If you click on the No button RGA for Windows will start normally without resetting The Spectra Loading window will be displayed 1 mn ft At this point providing the RGA for Windows software has been able to establish the link to the control unit the RGA for Windows Mode Select window will be displayed as shown below If the link to the control unit is not made or the software cannot run for any other reason an error message will be displayed For information about how to proceed if you get an error message refer to the Trouble shooting section of this manual RGA for Windows Manual SP104001 Rev 2 50 Page 74 T RGA for Windows Mode Select OF x File View Filament Multiplier Settings Mode Help sl MAN ar If a second dialog box saying that the selected RF and Analyser does not match the actual RF and Analyser should be displayed RGA for Windows y The selected RF Analyser combination does not appear to
171. n section 5 of this manual To complete the installation of Multi RGA for Windows you must run the configuration program To do this double click on the Configure icon in the SPECTRA program group 3 25 Configuring Multi RGA for Windows The configuration program should be run as part of the installation process and can be re run at any time to change the configuration of Multi RGA for Windows To run Configure double click the Configure icon in the SPECTRA program group Win95 To run Configure click on the Start button on the Taskbar and select Programs Spectra and click on the Configure item in the Spectra folder the Configure window will be displayed The Configure Window will be displayed as shown below RGA for Windows Manual SP104001 Rev 2 50 Page 49 Spectra Lali Pla Lali Pla Lali lala Lali La Lal lala Lal flal Lal flal Lali flal RGA Multiplex RGA Multiplex Group 1 Group2 Group 1 Reset Group 2 Reset Reset 7 o gt wt Configure Ports RGA Help DDE Test Uninstall Download ae 23 4 Recall RecallHelp DDE Examples Macro Examples The first thing to set is the number of heads which are connected to the PC To do this click on the down arrow to the right of the Number of Heads connected text A dropdown list containing the numbers 1 to 8 will be displayed click on the appropriate number Next select the number of Satellite comms cards which are fitted in the PC Click on the down arrow to the righ
172. n the Spectra install Window is displayed the line of text immediately below the Spectra logo will read either Spectra Install RGA for Windows LMSP 1 1 V2 4x in which case the software is single headed or it will read Spectra Install Multi RGA for Windows LMSP 1 2 V2 4x in which case the software is Multi Headed To proceed with the installation of the RGA for Windows software follow the instructions for the type of software you have The product code for single headed RGA for Windows is LMSP 1 1 followed by the version number The product code for multi headed RGA RGA for Windows Manual SP104001 Rev 2 50 Page 12 for Windows is LMSP 1 2 followed by the version number The version number will be V2 4x where x is a single digit number in the range 1 to 9 3 4 Installing Single Headed RGA for Windows Instrument Architecture Computer System Requirements PC to Control Unit Connection Installing Share exe Running Install Configuring RGA for Windows The Spectra Program Group 3 5 Instrument Architecture The complete RGA instrument has four basic elements the analyser this is the part which fits into the vacuum chamber RF power supply this is a small electronic unit which fits directly onto the analyser control unit an electronic unit containing the power supplies and data acquisition system which connects to the PC via a serial cable computer this is the PC which runs the RGA for Windows software The type
173. nannnnnonococonananonos 1 1 2 2 Using the Help Manual oooooononccnonccconccconnnononncnnnncnnnncnnccnoncnos 3 Section 2 IntroductionN ooommmm 5 21 Introduction A eke Hele 3 2 2 Getting HelPiciuninon unida 5 2 3 About This Manual oooonnnnnccconcccnnnonononcnonoconnnannnnnnnnnccnonanancnnnnocinonns 6 2 3 1 Microvision Plus features cooonocccccononononaccnoncconannnnananocononns 7 2 4 Software ersions a oa 7 2 4 1 New in Version 2 40 occnnnnnocccnncconononnnnnnnonoconnnnnnnnnnnccnonnns 10 Section 3 InstallatioN ooomooommm 11 FL T stallati oDe sainn a ele ae e E 11 3 2 Unpacking vecinita 11 3 2 1 Making Backup DISKS oooooccnnoccnoncccoocncnonncnonccnoncnnonnnonos 12 3 3 Single or Multi Headed oooconnoccnonccnoncncnonncnonncnonccnonononnnncnonncnonnnos 12 3 4 Installing Single Headed RGA for Windows oooccooccoocncoonncnonnnos 13 3 5 Instrument Architecture ccccncnnnococnccconnnononanonococonannnnnnnnncconananones 13 3 6 Computer System Requirements ooooooccconcccooononnncnonncnonncnoncnnononnnns 14 3 7 PC to Control Unit Connection oooooccccnnnnononanunonononananananoniconananones 15 RGA for Windows Manual SP104001 Rev 2 50 Page i 3 8 Installing Share exe reinnoire 16 3 9 Running Install oooonnncononccnonccconcnconcnononncnon conan cncononcnnr non nnonnncnnnos 16 3 10 Configuring RGA for Windows oooocccooccnonncnoncnconcncnnnnconnncnonnnnnos 1
174. nccnonccnonccconcnconnncnonncnonnno 84 4 13 Changing the Mass Scan oooccoooccoonncoonncnonencnnnncnnn conan conan cncannncnnnos 85 DECOM AA sessios s gt 87 Si le General Features scx cies cesses hese ay See enn e es 87 Sl SHEN ps aac lavas a as he ed 87 Dele RO iaa iia gree ants 87 5 1 3 Multiplexer and Loader oooonnoccnonccnoocnconcncnonncnonccnoncnnnnnnnnos 88 A EX bee fea lees he sevss peel eet sty aeecteed estate dani estate eh aaeeees eee 89 RGA for Windows Manual SP104001 Rev 2 50 Page iii DSe AA te ce ee 89 5 1 6 FUL Aen sss aco ecco ec ee dee o sd 95 Sey Palament Lap sSecisacti skit Tae el ee el oe hh 96 MS DAS e ieee 99 5 1 9 Multiplier Detector ooonooconoocccoocncononcnonccnonnncnnnnononncnoncnos 101 5 1 10 RF Select unirnos 107 SLU Disk torito ic 108 AN 111 5 1 13 Total Pressure Measurement oooconoooncnonncnonncnoncnconnnonnnnnns 112 5 1 14 ACCULACY cocooocccoonncoonncnonncnoncnnonononnnncnnnononnnnonnncnnnncnnnncnnnno 114 A A O 115 5 1 16 Autora Np Es fee enacts cede Pies renean eree rE ae 115 SVT A 116 A n teen etter 116 54 19 Set Allin decisive deeditineves destinies 117 5 2 Operating Mode ii iether ied pee hk 117 5 2 1 Bar Chart aissis ii E R A danna dida 117 92 2 Peake Jumped icles cesses neetna ea eheieaceing 128 9 23 Multt Trend nomina 133 O24 Leal Check ici 139 5 2 5 Analogue ooooooccoocncononcnonncnoncnnononcnnnncnnnnonon conan nn cano ncnnnncnnnnos 142 ZO HA
175. nd unlock RGA For Windows INTERVAL 0 1 LOCKTASK 0 Set Mode back to Mode Select MODE MODE SELECT EXIT Example MODES TXT Modes DDE Switches RGA For Windows into each mode for 20 seconds 20 Seconds interval between each DDE command on the RGA4WIN RGA topic INTERVAL 20 TOPIC RGA4WIN RGA Change mode to Analogue MODE ANALOGUE 12 8 3 1 1 0 0 6 0 Change mode to Barchart MODE BAR CHART 12 50 3 1 1 0 0 6 0 1 5 8 Change mode to Leak Check MODE LEAK CHECK 18 15 3 0 1 0 0 6 0 1 Change mode to Multi Trend MODE MULTI TREND 3 1 0 0 1 1 0 0 0 1 0 Change mode to Peak Jump MODE PEAK JUMP 3 0 0 0 1 1 0 Change mode to the Mode Select screen MODE MODE SELECT The second set of files are Microsoft Excel files that show how to use DDE RGA for Windows Manual SP104001 Rev 2 50 Page 191 from within Excel version 4 0 or higher ANALOG XLM ANALOG XLS BARCHART XLM BARCHART XLS PEAKJUMP XLM PEAKJUMP XLS TREND XLS The macros XLM files show how to send commands to RGA for Windows and the worksheets XLS files show how to read data back into Excel from RGA for Windows The macros are fully commented to show what they do One further file VSPKJDDE XLS demonstrates an Excel version 5 Visual Basic for Applications macro which obtains data from RGA for Windows in Peak Jump mode Data from all 12 channels is collected and each scan given a relative time since starting the macro F
176. nels All channel parameters can be set from the Channel Settings dialog box which is accessed by clicking on the mass label on the Key Panel The trend data is plotted in the colours indicated in the Key Panel Channel enabled The channel enabled parameter in the Channel Setting dialog box and the Colour panel in the Key Panel allow individual channels to be enabled or disabled To enable a channel check the Channel Enabled check box in the Channel Settings dialog box or click on the plot colour box in the Key Panel When disabled the plot colour box is reduced in size and the channel will be omitted from the scan Range When using the linear axis the range feature operates in a similar way to the other modes except each channel can have its own range To change the range click on the mass label in the Key Panel in the Channel Setting dialog box click on the Range E dropdown list box and then click on the required range in the dropdown list box In Log Axis display all channels automatically autorange Autorange RGA for Windows Manual SP104001 Rev 2 50 Page 145 The Autorange feature operates in a similar way to the other modes except each channel can be set to autorange independently unless Log Axis display is used when all channels automatically Autorange Click on the Autorange check box in the Channel Settings dialog box to enable autoranging for a channel The settle time required to get good results may change as the range ch
177. nerate ions and to accelerate them as a beam Isotope One of a set of chemically identical species of atom which have the same atomic number but different mass numbers Leak rate Designated as the quantity of gas passing through a leak in a given time divided by that time Leak rate is a general concept whereas rate of pressure change is specific to the vacuum system volume Leak rate has therefore the advantage that component or part leak rates can be added together to find an overall figure for a complete plant A unit for leak rate is the Millibar Litre per Second Mass range Mass Spectrometer RGA for Windows Manual SP104001 Rev 2 50 Page 221 The interval between the smallest and largest masses which can be detected with a mass spectrometer Mass analyser That portion of a mass spectrometer which separates the ion beam into its various mass to charge ratio components Mass spectrum i A recording of the ion current amplitude as a function of mass number obtained by scanning through all or part of the mass range 11 A tabulation or chart of peak ion current as a function of mass number Mass to charge ratio The ratio of the mass to the charge of an ionised particle See Ion Millibar Unit or pressure which approximates to 1 1000 of an atmosphere The most widely used unit of pressure measurement in Europe Minimum detectable partial pressure The smallest partial pressure the mass spectrometer can detect Mol
178. ng accuracy can be altered to give faster overall scan speeds RGA for Windows Manual SP104001 Rev 2 50 Page 10 Section 3 Installation 3 1 Installation This section deals with installing and configuring the RGA for Windows software and how to connect RGA control units to your PC You should refer to the control unit manual for details of how to install the analyser into your vacuum chamber and how to connect up the analyser RF head and control unit Please follow each part of this section carefully and only skip those parts that do not specifically apply to your particular system If you have any questions or experience any difficulties contact your local representative who will be able to help you There are slight differences in installing RGA for Windows on Windows 3 1 and later systems and Windows 95 systems The differences for Windows 95 are noted with the Win95 label Unpacking Single or Multi Headed Installing Single Headed RGA for Windows Installing Multi Headed RGA for Windows Upgrading From Earlier Versions Download Baking The Analyser 3 2 Unpacking When you receive your equipment carefully check each item before removing the wrapping to ensure that no physical damage has occurred during shipment Also make sure all items have been received by checking against the enclosed packing slip If there has been obvious damage during shipment or if there are items listed on the packing slip as shipped which are
179. ng the Bar chart mode select it and adjust the mass range so that stable spectra are displayed using the Faraday detector on a range greater then or equal to E 7 Try turning on the Multiplier and check that the range does not alter If the magnitude of the partial pressures in the spectra change but to not disappear completely then you should calibrate the multiplier See section Error Reference source not found for details about how to calibrate the multiplier and the effects that using the multiplier will cause If all the peaks in the spectra disappear then check the following e Check that the multiplier high voltage cable has been connected between the RF head and the control unit Ensure that the control unit is switched off before connecting or disconnecting the high voltage cable e With a filament switched on run the diagnostics and check that the SEM supply passes If it fails you should contact your local agent for further advice e Run up RGA for Windows with a power up reset This will reset all the system parameters to the factory default values The default Multiplier voltage will be reset to give an approximate gain of x100 Use the Bar chart mode as before to see if the multiplier is now functioning Note that in Peak Jump and Trend modes the global multiplier in the icon bar must be on as well as the multiplier being checked in the Channel setting dialog box RGA for Windows Manual SP104001 Rev 2 50 Page 209 9 8 R
180. nge capability is 200amu only RS232 serial communication is possible the RF Tuning and RF Select facility is not available 3 6 Computer System Requirements The minimum requirements for running RGA for Windows are listed in the table below This is however only the minimum requirement and the overall performance of Windows and hence RGA for Windows can be improved considerably by increasing the specification of the PC For this reason we would always recommend that RGA for Windows is run on a PC fitted with at least a 33MHz 80486dx Component Description Microprocessor 25MHz 80386sx RAM 4MB Hard Disk Required with at least 6MB of free space Video Standard VGA 640 x 480 16 colour Microsoft Windows Version 3 1 or later or Windows 95 True Type fonts installed Mouse A mouse is required Serial Port Required to connect the control unit to the PC RGA for Windows Manual SP104001 Rev 2 50 Page 14 3 7 PC to Control Unit Connection Most PCs are supplied with 2 serial ports called Coml and Com2 The connectors for Coml and Com2 are usually positioned on the rear of the PC and may be either 9 way or 25 way male D type connectors If you have a problem identifying these connectors you should refer to the documentation supplied with your PC or contact the PC manufacturer or distributor directly The RGA for Windows software will run a single control unit and this control unit MUST BE connected in order to run RGA for Windows Normally
181. nit may be used to connect an expansion module such as an RVC or Analogue Output Module or as an Alarm Output port If an expansion module is fitted and alarm output signals are also required then a Digital I O card must be fitted to the PC to provide alarm output signals Any make of digital I O card may be used provided they use 8255 programmable peripheral chips or emulate the 8255 in its mode 0 The cards we would recommend are the PC DIO24 the PC DIO48 and the PC DIO192 manufactured by Brain Boxes The number of outputs required will depend an the number of RGA heads and the number of channels being used The number of outputs each card can give is indicated in the name e g PC DIO48 gives 48 outputs which can be used as alarm outputs The 8255 has a total of 24 bits divided into three ports each bit may be configured as an output or input Port A and Port B are each eight bit ports Port C can be considered as two 4 bit ports referred to as CL and CH RGA for Windows only uses the ports as alarm outputs so they may all be configured as outputs It is possible to configure one or more ports as inputs if you do not require them for alarm outputs This may be useful if you are using another application on your PC which can use digital inputs 5 5 1 Installing the card To install the digital I O card you should follow the instructions that come with it Before fitting it make a note of the port addresses you will need these when configuring
182. nnonannnccononannnnnnnnninonnno 168 6 2 6 Print Command coooooooccccnnnnnononanonocononannanononononnnnnnnocononannnnns 169 6 2 7 Head Command c oocccccnnnnnnonacnnonononannnnnnnnnocononnnonanonacononannnans 169 6 2 8 Moveform Command ocoonoonooccnncccononanonnnnnonannnnnananocononananons 169 6 2 9 Scan Delay Command oooonocccoooncnonncioncncononononncnnnncnoncncnnno 170 6 2 10 Time Delay Command coooooocnonccnonncnonnnoonnnconnncnonncnonncnononos 170 6 2 11 Go To Command reenirinte h s 170 6 2 12 Restart Command ccccnnnnnoncccncccnnnnononnnnnncononanannnananoconanano 170 6 2 13 Macro Examples ccoo ic 170 Section 7 DDE LinKS sisiesssccsecsssscssssccscssosssscssosceossocssssessscossssos 175 7 1 IntroduCtiON ooooocccncccnnnononanononocononannnnnnnnccnonnnnnnnnnnnccnonnnnnnnanancccnnnns 175 7 2 Application and Topics oooocnnocccionncnonncnoncnonnnncnnnncnonncnon non ncnnnnnos 176 7238 EE a EEEE E sd da e de O 176 IAN 178 7 5 Select Mode Command sessirnar aE a 180 7 6 Set Channel Command DDE ooooccccnccccnnncnonanannnocononanannnnnnocononns 182 Td Disk COMME dao 183 7 8 Channel Commands oooooccccnnnnonononnnonononononnnanonocononannnnnnonocononananans 185 9 General COMmMadds aid 186 7 10 Valve Controller CommandS ooooococcccccnnnnnononannnccononanannnnnnncnonnno 187 7 11 DDE Examples iii iaa ias 187 Section 8 CustomisatiOD ooooooommmmmmmm 193 8 1 INT File Settings oooonooccnonncnonncn
183. no protection in the Mode Select page for example Note that if a logarithmic axis is being displayed and the partial pressure trip is enabled a trip will occur when a partial pressure exceeds the lowest pressure range Therefore we advise users not to use the partial pressure trip facility with the logarithmic axis To enable partial pressure trips select Filament Protect Filament from the menu bar and click Partial Trip Enabled followed by Ok M The Partial Pressure trip is not available with Microvision Plus RGA control units Total pressure trip When the total pressure trip is enabled a total pressure measurement exceeding 5 0 on the selected range will cause the filament to be switched off and the Filament Protect Trip Check the total pressure trip message will be displayed The Filament button will indicate that the filament is off The total pressure trip is only active when total pressure is being measured Total pressure is only measured at the start of each scan in Bar Chart Peak Jump Multi Trend Fast Scan and Analogue so no protection is given if the pressure rises during a scan between making total pressure measurement readings To enable the total pressure trip select Filament Protect Filaments from the menu bar choose the range that the total trip should operate on then click Total Trip Enabled to check it followed by Ok External trip The external trip operates independently of the RGA for Windows softw
184. nonnnnconnnnnccnnccconannnos 21 Quick Guide Windows 9S asesoras ttre rererere neer renont eire irei aene oira 25 R Range aaa cessing EAA AAE 115 135 145 146 147 148 RGA for Windows Manual SP104001 Rev 2 50 Page 255 Ratioswith channel de era eels eh a 137 147 Reference Section E A E E A 87 Relative lonisation Sensitivity oooooconoocccoocncononconnnononcnnoncnnononcnnn non nncnonncnss 235 Res ralla 87 Resetafter maintenance unos N N 210 RE F iled Tp ostia oia 161 tf power SUP Viuda nad 13 RE Selecties x cious ses N E ER 107 Jea AONNE aT AEAEE E NNE 143 144 RE TUI ita 210 211 212 214 215 216 RGA for Windows BaSIcs cccccccccsssecceessseceessseeceesssecceesseeceeensseceessseeesaees 61 Y O oh E 15 43 RS 42 tota data 52 53 RSF SD seas heal ated eile aa anahi 53 Roane instal ois eee os ah ia es 16 JEO CE al a ET A A tein ate erent peepee A 96 97 99 S SAV CO SELEM OS ts Shoe acer area RG ns ds Ca 89 SCLECE ICONS tritio T eae ad oe aa Ta eae 91 Select Mode Command ccccccccesssscccessseeceessseeceessceceeesseeceessseeees 180 A A Seas Mecca A oa Ra 117 Set Channel Command 0cccccccccccsssccceessseceessseeceesseecceesseeeeesseeeees 182 Seta Batista ta woe 63 Settle time ooconooccccccccnnnonnnannnnncnonanananononoconnnnnnnnnnncccnonnnnnnnnnnnccnnnannnnns 146 147 Settle TINE ss as abit 145 Single or Multi Headed oooonooccnonocionncnoncnconononnnncnon conan nncononcnnnncnnncn
185. not in the box immediately contact your local sales service representative Most insurance claims for shipment damage must be placed within 7 days from the date of delivery in WRITING So don t delay Check it out RGA for Windows Manual SP104001 Rev 2 50 Page 11 The RGA for Windows software is supplied on three High Density 3 5 inch floppy disks These disks are shipped in clear plastic wallets held in the white three ring manual binder 3 2 1 Making Backup Disks Before you do anything else you should generate backup disks from the program disks supplied To do this use the MS DOS DISKCOPY utility or any other method you are familiar with to make a copy of the original disks Keep the original disks in a safe place and only use the copy 3 3 Single or Multi Headed There are two types of RGA for Windows software and before proceeding it is important to establish which type you have The first type is Single Headed RGA for Windows which is designed to operate with just one RGA head control unit RF power supply and analyser Multi RGA for Windows is the second type and this is designed to operate with one to eight RGA heads On the RGA for Windows software disk labels will be written either Single Headed or Multi Headed depending on which type you have Alternatively you can check by letting the Install program tell you which type of software you have To do this follow the steps 1 to 4 in Running Install Whe
186. ntal number which should be 1 for the first 8255 2 for the second 8255 and so on The address is the base address for the particular 8255 and should match the setting of your digital I O card You can prefix the address with amp H to indicate that it is a hex number The third line is a comment Comments may be inserted in the DIGIO INI they should be on a separate line and must begin with a semicolon The last four lines set each of the 8255 ports as outputs 0 You will need one entry per 8255 port i e if there are two 8255s there will be eight entries Signal allocation The signal allocation is defined by editing the SIGNAL section of the DIGIO INI file please refer to the printout of this file at the end of this section The first line is RGA for Windows Manual SP104001 Rev 2 50 Page 156 No Of Signals nmax Where nmax is the maximum signal number you are to define This will usually be the same as the number of output bits on the digital i o card In the DIGIO INI file printed at the end of this section No Of Signals 24 For each signal two entries are required The first entry defines the address of the port to be used the second is the bit mask to identify the bit within the port which is to be used The format of the two entries are Port Address n port address Bit Mask n mask Where n is the signal number being defined Port Address is the hex address of the required port Mask is a byte mask wit
187. oad click on the Start button on the Taskbar and RGA for Windows Manual SP104001 Rev 2 50 Page 56 select Programs Spectra and click on the Download item in the Spectra folder the Download window will be displayed as shown below Download Comm port com gt Re read info About Instrument Information _ Reset Microvision Serial No LM 70 00397010 Core Version Processor RAM Size 262144 bytes ROM Size 262144 bytes Sector Size 032768 bytes Application loaded Microvision 1 50a Load Program Unload Exit Select the comm port by clicking on the Comm port dropdown list box and then click on the required comm port As soon as you do this the RGA for Windows software will try to establish communications with the control unit If this is successful one or more lines of information will appear in the Instrument Information box This process can be repeated by clicking on the Re read info button and will be repeated each time a new comm port is selected To load the control unit code into RAM click on the Load Program button and the Select File To Download dialog box will be displayed You can select the drive and directory where the code is stored Also you can select the file type as Satellite and Microvision Microvision Plus control units have different file types The full file name for Satellite code to run RGA for Windows using the default path is C spectra satcode ram RGA for Windows Manu
188. oard This feature is designed to be used with Recall where the current scan in Bar Chart Peak Jump Multi trend or Fast Scan can be copied to the clipboard and then pasted straight into Recall Once in Recall the data can be analysed or stored into the library database Of course scans can be copied into other applications using this feature a word processor for instance when writing reports To copy the current scan to the clipboard select File Copy to Clipboard from the menu bar or press CTRL C View Menu The View menu allows the user control over some items displayed on the RGA for Windows screen In the Mode Select screen the Icon Bar and the Help Bar may be hidden To hide the Icon Bar select View Icon Bar from the menu bar or press CTRL I When display of the Icon Bar is enabled a 4 tick is shown by Icon Bar in the View menu To hide the Help Bar select View Help Bar from the menu bar or press CTRL H When display of the Help Bar is enabled a 4 tick is shown by Help Bar in the View menu In the scanning modes where the Settings Bar is displayed this may be hidden as well as the Icon and Help Bars To hide the Settings Bar select View Settings Bar from the menu bar or press CTRL S When display of the Settings Bar is enabled a 4 tick is shown by Settings Bar in the View menu The Grid and the Cursor may be enabled and disabled from the View menu see Cursor and Grid Each time one of the Bars is hidden the additional s
189. obe mass 1 to max mass Mass offset 0 47 to 0 5 in 0 03 steps Accuracy 0 1 2 3 4 5 Audio 0 disabled 1 enabled Grid 0 Off 1 On Cursor 0 disabled 1 enabled Detector Gain 0 faraday 2 mult x100 3 mult x1000 Range 5 14 E 05 to E 14 Autorange 0 off 1 on Continuous 0 off 1 on trace RGA for Windows Manual SP104001 Rev 2 50 Page 166 note 1 this parameter need only be specified if the Log axis is enabled 6 2 2 Filament Command The filament command switches on or off one of the two filaments Command Variable FILAMENT 0 Filaments off 1 Filament 1 on 2 Filament 2 on 6 2 3 Disk Store Command The disk store command is used to start a disk store and set up the various parameters associated with storing to disk Command DISKSTORE Parameter Variable Filename full path and filename in the format drive directory sub directory filename extension Number of scans any integer in the range 1 to 32000 Timed disk store 0 not a timed disk store 1 timed disk store Store interval interval between storing scans number of scans in the range 1 to 32000 or number of seconds depending on Timed disk store setting Store hundredths stores the time to 1 100 seconds 0 disabled 1 enabled 6 2 4 Set Chanel Command Each channel used in the multi trend peak jump and fast scan modes has a series of parameters associated with it These parameters are the same for each of the three modes but are different to the glob
190. of control unit used in RGA for Windows systems may vary Microvision combines the traditional control unit and RF power supply electronics into one extremely compact unit which plugs directly onto the analyser Microvision Plus is similar to the Microvision but enhanced electronics gives improvements in performance and allows additional RGA for Windows features to be used The Satellite is designed specifically to operate with a PC and has no built in data display just six LEDs on the front panel to give status indication The Vacscan Plus instrument has a built in CRT and can operate as a stand alone RGA without being connected to a PC When the Vacscan Plus is run RGA for Windows Manual SP104001 Rev 2 50 Page 13 from the PC under RGA for Windows it operates in a Satellite emulation mode and its screen display will mimic the six LEDs on the front panel of the Satellite When the Vacscan Plus is first powered up it assumes its stand alone mode only when it is connected to the PC via its RS232 port and RGA for Windows is booted up will it switch to the Satellite emulation mode Vacscan control units may also be used in RGA for Windows systems There are certain limitations when using a Vacscan Plus or Vacscan as a Satellite These are a Remote Vacuum Controller cannot be fitted an Analogue Output Module is limited to six channels the scan speeds are slower approximately 50 the Download feature cannot be used the maximum mass ra
191. on If you click on the Cancel button the next head in the group will be started 5 1 4 Exit When RGA for Windows is started the first screen is called the Mode Select window To close RGA for Windows either click on the Exit button in the Mode Select window or select File Exit from the menu bar From any mode other than the Mode Select window clicking on the Exit button or selecting File Exit from the menu bar will return you to the Mode Select window from where you may close RGA for Windows 5 1 5 Preferences The preferences menu allows various RGA for Windows parameters to be set up to meet the user s needs All of the preference are available by selecting File Preferences from the menu bar in the Mode Select window they are not available from any of the scanning modes Save settings on exit When Save Settings on Exit is enabled all of the parameters in the various operating modes will be stored and the settings will be used the next time RGA for Windows is run If Save Settings on Exit is disabled any changes made to the operating parameters such as gain range accuracy mass span etc will be lost when you close RGA for Windows To disable Save Settings on Exit from the mode select screen select File Preferences Save Settings on Exit a 4 tick will be shown next to Save Settings on Exit when the feature is enabled The default settings is Save Settings on Exit enabled Channel mode multiplier warnings RGA for Win
192. on process The most common example of a software switch is the reset switch used to start RGA for Windows using the factory default settings To check the use of the reset switch In the Spectra program group click on the RGA Reset RGA Multiplex Rest for Multi Headed RGA for Windows program item to make it active RGA for Windows Manual SP104001 Rev 2 50 Page 196 select File Properties The Command Line will read C SPECTRA RGA4WIN EXE R assuming the default directory is used notice that there is a single space immediately before the The Command Line can be edited to remove or add software switches All the software switches begin with a forward slash and there follows a single letter and possibly a single digit number depending on the switch More than one switch may be used in a command line and there is a space before each 8 3 1 Software switches Hn R 0 L Wn Nn The Head switch where n is the head number in the range 1 to 8 This forces RGA for Windows to start up a specific head as defined in the configuration process in multi headed systems The Reset switch This forces RGA for Windows to be started using the factory default settings The ROM Boot switch This forces RGA for Windows to run using the Satellite code held in EPROM rather than the code held in the Satellite s battery backed RAM The Multi Loader switch The will cause RGA for Windows to be started using the Loader
193. one of the standard serial ports Com1 or Com2 on the PC is used to connect the RGA control unit The connection between your PC and the control unit is made using the RS232 cable supplied If both of the serial ports are being used you will need to fit a Satellite comms card This is described in Satellite Comms Card The standard cable to connect a Satellite Microvision or Microvision Plus to the PC is a 9 way D plug to 9 way D socket RS232 cable and a 25 way D socket to 9 way D plug RS232 cable is available as an option To connect a Vacscan or Vacscan Plus to the PC a null modem cable is required as standard this is a 9 way D socket to 9 way D socket A 25 way D socket to 9 way D socket is available as an option In all cases the standard cable length is 3 metres 9 feet longer cables are available on request please contact your local Spectra facility CAUTION You must only use RS232 cables supplied with the equipment We cannot guarantee that other manufacturers cables will work correctly in Spectra RGA systems If you must use an RS232 cable not supplied with the equipment then use the cable supplied as an extension to your cable ENSURING THE CABLE SUPPLIED WITH THE EQUIPMENT IS PLUGGED INTO THE PC Identify the serial port to which you will connect the control unit As part of the installation process the configuration program will be run This will determine which serial ports are available on your PC and ask you to specify to which
194. onnnconnncnnnncnon conan conan conan cnconncncnnnns 193 8 2 Print Company Logd eren ene a a 196 8 3 Software SWitches senenn a A a A a 196 8 3 1 Software SWwItCH6S coooonococcccccnonononncnnncoconannnnnanacocononananons 197 RGA for Windows Manual SP104001 Rev 2 50 Page v Section 9 Troubleshooting cccccccccccssscccssssssssssscssseseesees 199 Oil CTS Errore Message nario ise 199 9 2 Overrun Error aoine iien ieie inie e E E 199 9 3 Software Installation and Configuration oooonooccnonccnoncncnonncnnnnnos 200 9 3 1 No communication ports found ooooocccnonccnoncnconnncnonnnnonnnos 200 9 3 2 Link to the control UNit oooonoocnnonccnoncnonncnonencnnnncnnnncnoncno 200 9 4 Background and Library Error ooooonooccnooccnonccconcnconnncnonncnnnncnonono 204 9 4 1 Corrupted database ooocononccnoncccoocnconcconcnononncnonncnoncnconononos 204 9 4 2 VBDB300 DLL coooocnnccnocnononnconoonnonncononnconnonncnnonrcnnnonnrn nono 204 9 4 3 Cannot find library ooonooccnnocccoooncnonncoonnnnonononnnccnnnncnononos 204 9 4 4 Library select failed oooooconccnnnnccnonccnonccnoncncnnnncnonncnoncnos 204 9 4 5 Background deleted oooooocnnoccniocccnonncconccnoncnonnnccnonnnnononos 205 9 4 6 Microvision error MessageS oooocoocncoooncnonnncononcnnnncnncnnnnnno 205 Orde HatalsError 53 da 205 9 6 Miscellaneous Errors cceceeseeesecesecececeseceeeececeneceeeceeeeeeeeneenes 206 9 6 1 SYSTEM TESOULCES
195. onnnnannnnnns 12 Software Switches vii din ca 197 Software VETSIONS enin a aaa 7 Softyware Installation and Configuration ooooccnoccnonnnncconnconncnncconcconcconncnnos 200 T The Spectra Program GTOUP ccoooccnoconononononncnoncnnononcnnnncnon conan cnnoncncannncnnnos 18 19 Time ao 138 148 Title BA AAA A AAA 63 TOPICS Pe E A A aac 176 Total pressure Measure Met ccoooonooccnononcoonncnoncnnoncncnnoncnnnncnonnononcncannncnnnnnnanno 82 Total Pressure Measurement ococnnnnnoconccccononononcnnnoncnonnnnnnncccnonannnnannnoss 112 113 Total Pressure Microvision Plus ooooocononocccononcncononnnncnonnnnnconanccnnnncncnnnnnnos 113 Total Pressure Trips ia eii 79 96 97 98 RGA for Windows Manual SP104001 Rev 2 50 Page 256 Troubleshooting srein inenen i nn k RE dikea 199 U UnpackI it A a 11 Upgrading incida oda 54 56 Using the Help Manual ot tees E ee eae eeeeess 3 vV MIO e dd 13 14 Vacu m CO ca 66 67 Vac um Scan aruna a aga 150 151 152 153 Valve A Ct atone etii a E E N A 154 Valve Controller Commands cccccccccssscceeessecesseeceeessceceessseeeeesseeeeeees 187 Vertical label szenn a dad vase bes A E EY 149 verticlenlabelS comic torta a a a tataa 89 137 MEM o e A 94 W Welcome Na 1 WINdOW cocccccccccnnnonnnnnnnononononnnnnnnonocononnnnnnnnnnnoconnnnnnnnnnnncccnnnnnnnnncnncccnnnns 89 91 92 Z ZO ln ninth eel Mande e Ande edd el eines 92 148 RGA for Windows Manual SP104001 Rev 2 50 Page 257
196. open the text editor and you can type the macro text file 6 1 2 Removing and editing macros Once one or more macro buttons have been created they can be removed by selecting File Remove Macro from the menu bar in the Mode Select screen This menu item is grayed out when there are no macro buttons The Remove Macro dialog box will be displayed click on the required macro then click on the Ok button Clicking on the Cancel button will close the dialog box without removing the macro To edit a macro select File Edit Macro from the menu bar The Edit Macro dialog box will be displayed and the Button Title Macro File and Help Text can all be changed When complete click on the Ok button to implement the changes click on the Cancel button to exit without implementing the changes The above procedures to remove and edit macros relate only to the macro button which appears on the screen not to the macro text file If you remove the macro as outlined above the macro text file will not be deleted this can only be done from the text editor To edit the macro text file select File Edit Macro from the menu bar and click on the Edit button to open the text editor and the macro text file to make any changes Remember to use the save command in the text editor to save any changes to the macro text file 6 2 Macro Commands The following is a list of the available macro commands The commands are not case sensitive so may be written in upper or
197. or Windows To overcome this it is necessary to add the following line to the CONFIGURATION section of the RGA4WIN INI file Ignore CTS 1 Note There is a single space before CTS and a single space before The statement should be written using upper and lower case characters as shown Remember that this will not be necessary for the vast majority of computers so do not alter the file unless you experience the above problem 9 2 Overrun Error On some slower PCs you may experience some problems with overrun errors you may encounter the following error message RGA for Windows Manual SP104001 Rev 2 50 Page 199 An overrun error has occurred Refer to the trouble shooting section in the RGA for Windows manual Restart RGA for Windows To solve this problem add the following line to the CONFIGURATION section in the RGA4WIN INI file Baud Rate 2400 Please use upper and lower case characters as shown and note the single spaces between Baud and Rate before and after the Remember that this will not be necessary for the majority of computers so do not alter the file unless you experience the above problem 9 3 Software Installation and Configuration 9 3 1 No communication ports found A dialog box with the message No available communication ports have been found Consult your RGA for Windows manual may be generated by the Configure RGA for Windows program It occurs when all the COM ports on the
198. or Windows Manual SP104001 Rev 2 50 Page 183 DISKSTORETYPE n n 0 Every scan n 1 Timed Storage n 2 DDE triggered store The Every scan and TimedStorage modes are similar to the standard disk store modes selected from the Disk Store dialogue box The DDE triggered store allows a single scan to be stored each time the DISKSTORESCAN command is executed DISKINTERVAL n n 1 3600 seconds When Timed Storage mode has been specified the time specified using this command will elapse between disk stores DISKSTOREATEND n n 0 Store immediate n 1 Store at end of scan This sets the store at end of scan option which will cause the disk store triggered by a DISKSTORESCAN or a Timed Storage to occur at the end of the current scan DISKCOMMENT comment An optional comment which will be stored in the files comment field can be sent using this command The comment must be enclosed between ASCH 34 DISKSTART Use this command to start a disk store when all parameters have been set DISKSTORESCAN If the DDE triggered store mode has been set and the disk store started with the DISKSTART command then a scan will be stored each time this command is executed DISKSTOP This command will terminate the disk store saving all data acquired up to the start of the current scan RGA for Windows Manual SP104001 Rev 2 50 Page 184 7 8 Channel Commands Application RGA4WIN Topic RGA These
199. or more information about the possible DDE commands supported by RGA for Windows refer to the DDE sections of the on line help RGA for Windows Manual SP104001 Rev 2 50 Page 192 Section 8 Customisation There are a number of facilities in RGA for Windows which may be configured to suit individual users requirements This section will explain this customisation capability Refer to INI File Settings Print Company Logo Software Switches 8 1 INI File Settings The RGA for Windows Initialisation file RGA4WIN INI contains all the parameters and settings used by the RGA for Windows software in single headed applications In the case of Multi RGA for Windows there will be eight ini files called RGA4WIN1 INI through to RGA4WIN8 INI and no file called RGA4WIN INI Most changes are made to the ini file by the RGA for Windows program or by the Configure utility Direct editing of the ini file should be avoided and if it is edited this should only be done only by experienced computer and Windows literate people Before carrying out any editing you should copy the existing RGA for Windows ini file to another directory but if you needed to be told that you shouldn t be attempting any editing The Configuration section of the ini file contains particularly important information which should not be changed once the software has left our production facility Version 2 20 RGA for Windows software introduced the boot ini file
200. orts on your PC You should check to see if the COMMS OK indicator is lit on the control unit If it is it means that the control unit has been able to receive data from the PC and the problem is associated with the PC receiving data from the control unit If it is not lit then the control unit has not received data from the PC In either case the best approach is to try temporarily connecting the control unit to a different COM port Preferably you should use one which you are confident is working correctly In most cases this will probably require you to disable the mouse and use the COM port used by the mouse To achieve this you will have to change the systems settings so that windows is not expecting a mouse to be connected Refer to the System Setup section in the Windows User Guide for details about how to use the System Setup program Before you change the mouse setting note the current setting so that you can restore it correctly later Remember to run the Configure RGA for Windows program and select the new COM port number before you try to run RGA for Windows again If you find that RGA for Windows will run on one COM port but not on another that port may be either faulty disabled or configured incorrectly You should refer to the information supplied with your computer or contact RGA for Windows Manual SP104001 Rev 2 50 Page 201 the manufacturer or supplier for details about how to configure and test the COM ports Connec
201. otal Pressure Microvision Plus Grid Cursor RF Select Set All Bar Chart Overview A typical Bar Chart display is shown below RGA for Windows Head 1 Bar Chari File View Filament Multiplier Settings Mode Help glag aal Total Pressure 1 3E 06 1 eS E o 2 3 D o 2 a 25 Mass a m u Enable disable the autorange feature This mode allows one of a number of pre set ranges of consecutive masses to be scanned The starting mass First mass can also be specified This RGA for Windows Manual SP104001 Rev 2 50 Page 118 mode is used for taking a general overview of the vacuum system The Bar Chart mode can operate with either a logarithmic or linear y axis Mass spectra library background and background subtract facilities are also provided in this mode In the linear mode the scan is performed on a single range and the partial pressures measured are plotted on a linear y axis in the range 0 00 to 9 99 The autorange feature can be used to automatically adjust the range at the end of each scan so that the largest peak will appear on scale The logarithmic mode allows partial pressures to be measured over a specified range between 1 and 7 decades and the results are displayed on a logarithmic scale The actual mass range scanned is First mass 0 5amu to First mass Mass span 0 5amu For each amu in the scan the maximum intensity around the nominal peak centre is de
202. ou can add modify or delete library entries using the library features provided in RGA for Windows but it is also possible to modify the library database using Microsoft Access The information contained in the Library database is Entry name RGA for Windows Manual SP104001 Rev 2 50 Page 124 This is the name which is displayed under the library spectrum when it is viewed and must uniquely identify the entry Formula An optional formula can be entered in this field Comment Optional comment can be entered in this field Major Peak The amu value of the major peak is entered in this field It has an implied intensity of 1000 Minor Peaks Up to 14 additional minor peaks can be included in a library spectrum To specify a minor peak the amu and the intensity of the peak relative to the major peak intensity 1000 must be specified The minor peaks intensities can be set to values between and 1000 Background In the Bar Chart mode the Background facility provides a method of visually comparing the active spectra with a previously stored scan In addition using the Background Subtract feature it is possible to subtract the currently selected background from the active spectra Backgrounds function in both Linear and Logarithmic modes of Bar Chart but it is recommended that the Logarithmic setting be used since if a peak is outside the range 0 01 to 9 99 on the current gain range it is of no use A background stored
203. ould therefore be re calibrated periodically as a matter of routine How often this will be required will depend on the particular operating conditions Automatic calibrate To run the automatic multiplier calibrate select Multiplier Automatic Calibrate Multiplier from the menu bar If no filaments are on you will be prompted to switch one on The Calibrate Multiplier Automatic dialog box displaying RGA for Windows Manual SP104001 Rev 2 50 Page 103 Calibrate Multiplier Automatic Lx Multiplier Gain Using Mass 28 on range E 07 Multiplier Voltage 751 Volts Faraday 0 00E 05 Multiplier 0 00E 05 Exit Configure The current voltage applied to the multiplier and the first mass in the mass list that will be used for calibration are shown To set the gain click on the Multiplier Gain dropdown list box and click on the required gain To start the multiplier calibration click on the Start button The system searches for the calibration peak in the range E 08 to E 10 A valid peak must be between 9 and 90 of full scale If entry 1 in the mass list is too large or too small then entry 2 will be tested and so on There are five masses in the mass list To view or modify the mass list click on the Configure button RGA for Windows Manual SP104001 Rev 2 50 Page 104 Calibrate Multiplier Setup Lx Calibration Masses Entry 1 2 3 4 5 U Cancel If the masses lis
204. ow Size left top width height USER DISK HEADER Section Number Of Entries 0 Save Settings 0 EntryNLabel Default Label N EntryNDefault EntryNType Text VALVE CONTROLLER Section Title Valve Controller Window Caption RGA for Windows Manual SP104001 Rev 2 50 Page 245 Valve Mode 0 0 manual auto Window On Top 1 Store Complete Scan 1 Purge Valve Number 0 Example ofa Typical RGA4Win ini file CONFIGURATION Pressure Y Label Pressure mbar Mass Range 200 Detector Dual Sem Supply 1 5Kv Ramped Degas 1 Baud Rate 9600 Comm Port 1 Pressure Units 1 RF TUNING Current 1 Entries 1 1 LM4 00193001 LM2 93001 2D2 128 128 128 128 100 134 103 120 SYSTEM Last Scanning Mode 2 SaveSettings 0 Save Settings 1 Show Icon Bar 1 Show Setting Bar 1 Show Help Bar 1 Windows State 2 Continuous Trace 1 Grid 0 Cursor 0 Satellite Analogue Output Enabled 0 PC Analogue Output Enabled 0 Satellite Alarm Output Enabled 1 PC Alarm Output Enabled 0 Audio Alarm Enabled 0 Y Label On 1 Multiplier Warning 1 RGA for Windows Manual SP104001 Rev 2 50 Page 246 Monitor Comm Noise Disconnect Satellite 0 Partial Trip On 0 Total Trip On 1 Total Trip ERange 2 Trip Filament On 1 Plot One Decimal Place 0 DISK STORE Timed Store 0 Store Interval 30 Number of scans 10 Store at end of scan 0 Store Hundredths 0 LIBRARY Select mass 28 Select enabled 0 Select bas
205. pdown list box and then click on the required gain in the dropdown list The Multiplier Gain control is only available when the multiplier detector is selected Peak Jump Features Ratio with channel This feature is not available in the Peak Jump mode Specific features Peak surround This feature can be enabled or disabled by selecting View Peak Surround from the menu bar or by clicking on the Peak surround button on the setting bar When enabled the value of the partial pressure is displayed above the peak and a box is drawn around the peak When enabled Peak surround is only applied to enabled channels Audio alarm An audio alarm can be enabled so that the control unit produces a tone whenever the high or low alarm settings are exceeded Click on the Audio RGA for Windows Manual SP104001 Rev 2 50 Page 132 Alarm button on the settings bar or select Settings Audio Alarm Enabled from the menu bar to enable disable this feature Logarithmic axis The results in Peak Jump may be plotted on either a Logarithmic y axis with a selectable number of decades or on a Linear y axis showing results in the range 0 00 to 9 99 To change the displayed axis click on the Log button on the setting bar or select Settings Log Axis from the menu bar When the axis style is changed the existing peak data will be redrawn with the new axis style Log display decades In log mode two dropdown list boxes similar to the Range control in other modes
206. program to a Satellite or Microvision using RGA for Windows Manual SP104001 Rev 2 50 Page 202 the Download program supplied If you are using a Vacscan Plus or another type of control unit it will be necessary to change the EPROMs please contact your local Spectra facility To Download the program follow the instructions in section Error Reference source not found Satellite sub mode failed A dialog box with one of the following messages may appear Satellite sub mode 166 failed Check Connections To Satellite Satellite sub mode 167 failed Check Connections To Satellite Satellite sub mode 188 failed Check Connections To Satellite Satellite version number not received Check Connections To Satellite All of the above errors will occur if the control unit is unable to communicate with your PC Satellite reconnect failed Satellite reconnect failed Check Connections To Satellite Under some circumstances it may not be possible to re connect the control unit In this case switch off the control unit switch back on and start RGA for Windows from cold RF Analyser mis match Error message The selected RF Analyser combination does not appear to match the actual RF Analyser This warning may occur if you connect a PC running RGA for Windows to a different control unit In multi headed systems if the head to comm port mapping has been altered or the control unit serial cables have been connected to different co
207. puter Requirements Multi The minimum requirements for running Multi RGA for Windows are listed in the table below This is only the minimum requirement and the overall performance of Windows and hence RGA for Windows can be improved considerably by RGA for Windows Manual SP104001 Rev 2 50 Page 38 increasing the specification of the PC For this reason we would always recommend that Multi RGA for Windows is run on a PC fitted with at least a 90 MHz Pentium and 8MB of RAM A 17inch monitor running at a resolution of 1024 x 768 is also recommended if data from multiple heads is to be viewed simultaneously Component Description Microprocessor 66MHz 80486sx RAM 8MB Hard Disk Required with at least 6MB of free space Video Standard VGA 640 x 480 16 colour Microsoft Windows Version 3 1 or later or Windows 95 True Type fonts installed Mouse A mouse is required Serial Port One serial port required to connect each control unit to the PC e g four heads four serial ports 3 17 Ports and Addresses Before describing the Satellite comms card it is worth explaining a little about the physical address of a port and its logical name Each port is identified by a unique base address and an IRQ number which can be shared between ports This information constitutes the physical address of a port and is configured on our Satellite Comms Card by setting jumpers The possible settings for base address and IRQ selection are listed in tabl
208. r x1000 To select the gain click on the Multiplier Gain dropdown list box and then click on the required gain in the dropdown list The Multiplier Gain control is only available when the multiplier detector is selected Alarms in Multi Trend High alarm The High Alarm Enable and the High Alarm parameters are displayed in the Channel Settings dialog box The High Alarm parameter is the partial pressure that must be exceeded to activate the alarm The range over which the High Alarm operates depends on the type of detector the instrument is fitted with For all detectors the highest pressure setting is 9 9E 05 The lowest setting is 0 1E 11 for faraday only systems 0 1E 13 for x100 gain multipliers and 0 1E 14 for x1000 gain multipliers The alarm value may be set in 0 1 steps To enable the High Alarm click on the High Alarm check box in the Channel Settings dialog box to check it The High Alarm setting may then be entered via the Mantissa box and the Range E dropdown list box Click on RGA for Windows Manual SP104001 Rev 2 50 Page 136 the spin buttons to adjust the Mantissa Click on the Range E dropdown list box and select the required value from the dropdown list by clicking on it The values in the Range E dropdown list will depend on the type of detector your system is fitted with Low alarm The Low Alarm Enable and the Low Alarm parameters are displayed in the Channel Settings dialog box The Low Alarm parameter is the pa
209. r zero Other features are very similar to the Multi Trend mode The results may be plotted on either a Logarithmic y axis with a selectable number of decades or on a Linear y axis showing results in the range 0 00 to 9 99 The results from each enabled channel are plotted in the colour shown on the Key panel The results from the channels are plotted as they are scanned If RGA for Windows Manual SP104001 Rev 2 50 Page 144 the time interval selected is shorter that the time required to complete the scan then the results will be plotted as soon as they become available The time axis can be labelled with either the real time or the time elapsed from starting the mode The time axis will be marked with a tick when a period of 10 times the time interval has elapsed At this time if there is sufficient space the tick will be labelled with either the elapsed or real time The results plotted scroll from left to right with the newest results appearing at the left of the display to emulate a chart recorder display This mode enables you to individually set the mass in any channel for partial pressure measurement Alternatively you may select either total pressure TOT or one of the built in analogue inputs You can assign a channel to either a fixed range or set the channel into autorange and select the detector to be used Fast Scan Channel Features In the Fast Scan mode most of the parameters and controls relate to individual chan
210. raps will serve as an optical baffle to oil vapours so that liquid nitrogen is not required except to achieve very low temperatures RGA for Windows Manual SP104001 Rev 2 50 Page 219 Cracking pattern Tabulation of the peaks in the mass spectrum of a pure compound Usually the heights are related to the height of the base peak which is assigned a value of 100 or 1000 For a particular type of mass spectrometer operated under a fixed set of conditions the cracking pattern remains more or less constant Cryopump Method for pumping of common permanent gases by freezing out onto cold surfaces below 30K This is a similar principle to that used for the pumping of water vapour on a liquid nitrogen trap at 77K Detector A device which produces an output signal usually an electrical signal in response to an input signal Electron multiplier A detector which consists of cascaded stages each intensifying the current from the preceding stage Electrons released from the first electrode cascade through the device to provide a charge or a current amplification Electrons are released from the first electrode by the impingement of photons and or by sufficiently high velocity heavier particles charged or neutral Electron emission From Surfaces The release of electrons from a solid or liquid surface as a result of i atom and or molecule impact secondary electron emission 11 electron impact secondary electron emission 111 el
211. rated against the faraday detector The multiplier calibrate can be used to calibrate at either x100 or x1000 gain and should be run with both these settings before the multiplier detector is used for partial pressure measurements A calibration consists of finding a peak in faraday measuring its height repeating the measurement to ensure the peak is stable reducing the electronic gain by a factor of x100 or x1000 switching the multiplier on and then adjusting the gain of the multiplier by increasing or decreasing the applied potential until the peak height is within 10 of that measured in faraday RGA for Windows Manual SP104001 Rev 2 50 Page 102 It is important to realise that the multiplier will only be calibrated at a gain of x100 or x1000 at the mass at which calibration took place Generally masses lower than the calibration mass will have higher gains and masses greater than the calibration mass will have lower gains As an approximation the gain of the multiplier when looking at a peak at a mass will be x100 or x1000 times the square root of the measured mass divided by the square root of the calibration mass If the calibration fails for any reason the multiplier voltage and hence gain will be left unchanged When multiplier calibrate is run the mode currently running will stop and it will be restarted when multiplier calibrate is complete It is quite normal for the gain of the multiplier to fall as it gets older It sh
212. ressure Microvision Plus MHo Total pressure can optionally be measured by an external gauge connected to RGA for Windows Manual SP104001 Rev 2 50 Page 113 one of the four analogue inputs To alter the total pressure measurement method select File Preferences Total Pressure from the menu bar in the mode select screen The Total Pressure Measurement dialog box will be displayed as shown below With the Internal RGA selected this is the default as the measurement method the scaling factor may be applied by clicking on the arrows to the right and left of the Scale Factor scroll bar dragging the cursor of the scroll bar or clicking on the Scale Factor value box and typing in the value The operation of the scaling factor is described in the previous section An external total pressure gauge providing either a linear output or a logarithmic output may be used To use a gauge with a linear output click on the External Linear Scale radio button select the analogue input to which the gauge is connected from the Connect to input dropdown list box then enter the pressure which corresponds to a gauge output of 10V To use a gauge with a logarithmic output click on the External Log Scale radio button select the analogue input to which the gauge is connected from the Connect to input dropdown list box then enter the pressures which correspond to a gauge output of 1V and 5V Details of the output voltage versus pressure should be obtained
213. ries of lines joining the dots To enable the continuous trace select View Continuous Trace from the menu bar Label trace When printing to a black and white printer it is possible to label each trace with its channel number To enable this feature select File Label Trace from the menu bar When enabled this feature will increase the printout time considerably on some printers Colour trace If you have a colour printer installed you can print the trend traces in colour Similar colours are used on the printout to those displayed on the screen except for white which will appear as grey To enable disable this feature select File Colour Trace from the menu bar Logarithmic axis The results in Fast Scan may be plotted on either a Logarithmic y axis with a selectable number of decades or on a linear y axis showing results in the range 0 00 to 9 99 To change the displayed axis click on the Log button on the setting bar or select Settings Log Axis from the menu bar In Log axis display all channels will autorange within the limits of Log Axis Start range to Log Axis End range When the axis style is changed the existing trend data will be redrawn with the new axis style Log display decades RGA for Windows Manual SP104001 Rev 2 50 Page 149 In log mode two dropdown list boxes similar to the Range control in other modes are displayed These determine which decades are displayed They can also be set from the Channel Settings dialog
214. rnal trip message will be displayed The Filament button will indicate that the filament is off 5 1 8 Degas Degas ion source DEGAS is strictly a UHV operation Only use this feature when the analyser is under vacuum of less than 1x10 Torr and will be used at total pressures of less than 1x10 Torr Do not use Degas to remove contaminants from the analyser That should be done by cleaning and or baking DEGAS is the method by which absorbed atoms and molecules are removed from the analyser ion source by means of high energy electron bombardment The default period for DEGAS is 5 minutes but this may be set to any value up to 59 minutes RGA for Windows Manual SP104001 Rev 2 50 Page 99 In order to limit stress on the filaments and to minimise gas load a ramped degas method is used which allows the power to be increased over the degas period It allows you to set a start power level in the range 15 to 100 full power and the power ramp rate in power steps second as well as the total degas period To enter the Degas Setup dialog box select Filaments Degas Ion Source from the menu bar Before the dialog box is displayed if the filaments are off you will be given the option of turning on a filament before you proceed Degas lon Source Lx Total Degas Time mm ss 6 joo Y Time Power Step ss ph y Starting Degas Power 2 is El e kd The Time Power Step ss is the time in the range 1 to
215. roblems 2 44 31 Mar Only bug fixes no new features 1999 2 43 1 Sept Recognises LM78 Vac Check as a product 1998 The Degas bug is fixed 2 42 26 June This version overcomes Year 2000 problems 1998 Improved Macro Language DSIKSTORE command RGA for Windows Manual SP104001 Rev 2 50 Page 7 Recall has an outgassing throughput calculation facility Two versions of the sample file DDE RGA XLS are available for Excel V5 95 and Excel V7 97 2 41 18 May Only shipped to Japan features as V2 42 1998 2 40 3 Oct Fully auto detects the control unit type see 1997 Three types of pressure units available Torr mBarr note Pascal PVD and Open ion source settings available The gain range sent back from the control unit to improve reliability Additional features to utilise improved Microvision Plus hardware four analogue inputs zeroing accuracy feature Vacuum Scan and Log Bar Chart Scans now completed in two sweeps Variable ion source settings Total pressure input from an external gauge HPQ 2 control units can be accommodated Can now be used with a valve controller 2 36 16 Aug Bug fixes only 1996 2 35 12 June No new features 1996 2 33 2 Nov Improved RF fail message 1995 Recall has improved use of the clipboard Library search improved Recall analytical tools available Recall has a DDE facility 2 32 21 Sept Bug fixes 1995 2 30 8 Sept A new version to run with the new Microvision 1995 control unit RF fail feature Mic
216. rom the original installation All the settings are stored in a file called RGA4WIN INI RGA4WINn INI for Multi RGA for Windows where n is the head number you may wish to save a copy of this in a separate directory before you start the upgrade Any changes that are required to upgrade the original settings files to V2 40 format will be made and a message indicating that the upgrade was carried out will be displayed If an upgrade was not carried out or it failed for some reason then the normal configuration procedure is entered 3 30 Download Download may only be used with Satellite Microvision and Microvision Plus units It CANNOT be used with Vacscan and Vacscan Plus units The RGA control unit has EPROM based software and an area of battery backed RAM which can also contain the control unit operating software When RGA for Windows establishes communication with the Satellite Microvision or Microvision Plus the code held in the battery backed RAM will be used if it is found otherwise the EPROM software is used When a software upgrade is carried out it is often necessary to upgrade the software in the control unit as well as the RGA for Windows software on the PC The control unit software can be downloaded from the PC via the serial link thus removing the need to change the EPROM To do this double click on the Download icon in the Spectra program group The Download dialog box will be displayed as shown below Win95 To run Downl
217. rosoft Access Database Engine is used by RGA for Windows for the spectra library The library data files are written in an Access format You should find SHARE EXE in your DOS sub directory To install the share command add the following line to your autoexec bat file in a part of the file that is used when booting Windows c dos share exe 1 500 f 5100 This assumes that the share exe command is in the DOS sub directory cidos If it is in another sub directory use that name instead of dos in the above line note that there is a single space before each of the two forward slashes f allocates the number of bytes for the share file information l sets the number of files that can be locked at any one time When the line has been added to the autoexec bat file you need to re boot RGA for Windows Manual SP104001 Rev 2 50 Page 44 your PC Do not re boot your PC until you have read the next section 3 21 Installing Override com If you are running under Windows 95 you do not need override com In multi headed RGA for Windows systems where a Satellite comms card is being fitted it is necessary to add the line c spectra override com to the autoexec bat file This is because the system BIOS on most PCs contains the addresses of the first four Com ports When you boot up your PC the system BIOS looks for these Com port addresses and if they are present uses them to over write those in the Windows system ini file To prevent this th
218. round has been deleted from another head In a multi headed configuration a background has been deleted from one head and selecting that background in another head has caused this error No action need be taken 9 4 6 Microvision error messages There are three error messages associated with Microvision control units these are listed below The application program is not loaded in the Microvision Use the download utility to load the application before re trying The application program failed to run in the Microvision Code x Use the download utility to load the application before re trying where x 1 Bad boot structure Application not loaded or instrument not configured 2 Corrupt application CRC failed or application not loaded The instrument responded initially as a Microvision but then failed to communicate to level 1 protocol commands If you get any of the above error messages use the Download facility to first un load the Microvision code and then use the Download facility to re load it Then try to run RGA for Windows again If this does not work contact your local Spectra facility and report all the symptoms to the service engineer He will advise you as to how to proceed 9 5 Fatal Error 53 Error 53 just means that a file needed by RGA for Windows cannot be found Firstly re boot the entire system and use the RGA Reset icon to start RGA for Windows Manual SP104001 Rev 2 50 Page 205
219. rovision only Variable electron energy Microvision only Total pressure calibration factor Ratio peaks in channel modes Filament current trip Microvision only RGA for Windows Manual SP104001 Rev 2 50 Page 8 2 22 25 July 1995 2 21 27 June Note 2 1995 2 20 2 13 3 May 1995 2 12 7 April 1995 2 10 19 Dec Note 3 1994 2 00a 6 May 1994 New diagnostics page Microvision only Download now able to use ram mg and bin files and report information about firmware No new features 3kV SEM supply supported to allow x10000 gain setting Different SEM gains in different channels SEM gain displayed in Mult button Macro capability added Ex RGA head multiplexing User defined head names Copy to clipboard User definable logo on printouts Fast scan mode Bright icons for the USA New DDE command to set all parameters for one channel Improvements to disk store and the RVC window Never released went straight to V2 21 Bug fix only Bug fixes only New RVC options for various valve combinations Alarm outputs via a plug in PC card Alarms in Multi trend mode Manual mult calibrate Now supports 3kV SEM board A beta version of Fast Scan mode added This release follows a complete re write of earlier versions of RGA for Windows and may be considered to be a new product Note 1 The following control unit software firmware is required to run RGA for Windows V2 40 Satellite satecode ram
220. rst mass To RGA for Windows Manual SP104001 Rev 2 50 Page 142 increment or decrement the first mass click the up and down buttons either side of the first mass button on the setting bar To set the first mass either click the first mass button or select Settings First Mass from the menu bar Fs RGA for Windows CEA 2 Analogue 01x E MM LSN j f Accuracy 3 y Range E 7 z an 5 E w 10 E o Es 0 2 a 4 un Y 2 a a 2 1 D nmr 5 5 5 5 ___ 14 16 18 20 22 24 26 28 Mass amu Mass span This parameter determines the number of consecutive masses that will be scanned It can be set to a value in the following list 8 16 32 64 To increment or decrement the mass span click the up and down buttons either side of the mass span button on the setting bar To set it either click the mass span button or select Settings Mass Span from the menu bar RF tuning This feature is only available when using a Satellite control unit with a LM46 LM61 or LM65 serial number which was sold with the Windows Satellite software and an RF head which has been supplied as part of a complete RGA for Windows package or a Microvision Microvision Plus Vac Check 100 It is not available with Vacscan Plus or Vacscan control units If RF Tuning cannot be used the menu item will be grayed out The facility allows the RF head to be tuned for mass
221. rt File View Filament Multiplier Settings Mode Help Total Pressure 6 5E 07 D a x a a Mass a m u Select deselect the library feature _ The y axis for the library spectra is always the same as the y axis for the live spectra Suppose the log axis starts at E 6 and ends at E 9 and we select the Carbon Dioxide library entry The major peak of Carbon Dioxide is mass 44 so this will be displayed as 1x10 The second peak occurs at mass 28 and is 11 to view the various masses and their intensities click on the Edit button of the 44 peak so will be displayed as a pressure of 1 1x10 If we change the y axis to Start at E 7 and end at E 10 the 44 will now be shown as a pressure of 1x10 and the 28 peak as a pressure of 1 1x10 The same RGA for Windows Manual SP104001 Rev 2 50 Page 121 follows when using the linear axis the major peak will always be shown as a pressure of 10 on the selected gain range When the library is enabled the Cursor will operate on both the live spectra and the library spectra The following is a description of the functions of the library buttons Previous Press this button to move to the previous library entry that meets the select criteria Next Press this button to move to the next library entry that meets the select criteria Select Used to open the Select Library Entries window to enable the select criteria to be set The library select feature is explaine
222. rt Com 2 as the only available option If you are not using a mouse or have a bus mouse then Com and Com 2 would be reported as options To select the required Com port you should click on the Use Communication Port dropdown list box The list of available ports will be displayed To select click on the required option in the list To make the change and exit the program you should click on the Ok button using the Cancel button will exit the program but the Com port setting will not be altered The Spectra program group will now be displayed If you are upgrading from an earlier version of RGA for Windows please familiarise yourself with the topics covered in Upgrading From Earlier Versions 3 11 The Spectra Program Group The Spectra program group as shown below contains thirteen program items each is briefly described below RGA for Windows Manual SP104001 Rev 2 50 Page 18 fp Program Manager Ld File Options Window Help Spectra EU amp amp 2 su RGA RGA Reset Configure Ports RGA Help Uninstall 4 Y ag 4 DDE Test Download Recall Recall Help DDE Examples Macro Examples Microsoft i Network Office Win95 The items in the Spectra folder are described below they are the same as the program items in the Spectra program group in Windows 3 1 and later systems To display the Spectra folder click on the Start button on the Taskbar and select Programs Spectra from the start menu RGA Double click on t
223. rtial pressure that must be exceeded to deactivate the alarm The range over which the Low Alarm operates depends on the type of detector the instrument is fitted with For all detectors the highest pressure setting is 9 9E 05 with 0 1 steps The lowest setting is 0 1E 11 for faraday only systems 0 1E 13 for x100 gain multipliers and 0 1E 14 for x1000 gain multipliers To enable the Low Alarm click on the Low Alarm check box in the Channel Settings dialog box to check it The Low Alarm setting may then be entered via the Mantissa box and the Range E dropdown list box Click on the spin buttons to adjust the Mantissa Click on the Range E dropdown list box and select the required value from the dropdown list by clicking on it The values in the Range E dropdown list will depend on the type of detector your system is fitted with Specific Multi Trend Features Ratio with channel This allows the cursor value displayed in the Key panel to be expressed as a ratio of that channel s reading and another selected channel s reading To enable ratio click on the Ratio with channel check box to check it then click on the dropdown list box and select the channel to ratio with from the list by clicking on it The channel identifier in the Key panel will change from one colour to two colours to indicate which channels are being ratioed The channel used for the ratio must be enabled in order to obtain a ratio value The trend displayed will the partial
224. rument In particular it will not fully reflect the contributions of the components with masses less than 10 amu This means that in UHV systems where hydrogen predominates the RGA will tend to report a low total pressure value The total pressure measurement is always made using the faraday detector at the start of the partial pressure scan and will always autorange provided a filament is on It is available in all the main scanning modes except Leak Check In addition in the channel modes Peak Jump Multi Trend and Fast Scan a channel may be set to measure the total pressure This is particularly useful in the Multi Trend mode if you need to plot the total pressure as a trend Relative to the partial pressures the speed of total pressure measurements is slow If you require to scan quickly and you are not interested in the total pressure in your system you should disable it This effect will be highlighted if you are using the multiplier to measure the partial pressures This is due to the time delay required when switching back to the faraday detector for the total pressure measurement Total pressure measurements may be enabled and disabled by either clicking the Total pressure button on the setting bar or by selecting Settings Total Pressure Enabled from the menu bar Total pressure scaling factor A scaling factor can be applied to the Total pressure measurement The Total pressure measurement is multiplied by the total pressure sc
225. s Set All menu item It is the lowest pressure range that will be used during the scan and partial pressures down to 1 00 on this range will be displayed This control is only enabled when Logarithmic mode is selected To set it click on the Log Axis End E dropdown list box and then click on the required value Library Within the Bar Chart mode a standard library of 62 common mass spectra is provided which may be extended to include your own custom spectra It is possible to search the library for occurrences of a particular mass as either the major peak or for any occurrence of that peak This is achieved through the Select Library Entries Only the spectra that meet these criteria will be available as you step through the library entries RGA for Windows Manual SP104001 Rev 2 50 Page 120 The Library functions are accessed by pressing the Library button on the setting bar or by selecting Mode Library from the menu bar When the library is displayed the window is split into two with the live spectra on top and the library and its controls below as shown in below Above the library spectra a label in the form name n of m is displayed where name is the entry name n is the entry number and m the number of entries meeting the select criteria The library spectra are always normalised when plotted so that the major peak is full scale and the minor peaks are scaled relative to the major peaks RGA for Windows Head 1 Bar Cha
226. s due primarily to molecular collisions with the passage walls Vacuum A space entirely devoid of matter In reality this cannot be achieved hence one normally talks in terms of the degree of vacuum attained within the following pressure ranges Rough vacuum 1000 1 3 mbar Medium vacuum 1 3 1 3x10 3 mbar High vacuum 1 3x10 3 1 3x10 8 mbar Ultra high vacuum 1 3x10 8 and higher vacuum Vacuum leak Any fault on a vacuum chamber wall through which material can pass from higher to lower pressure regions Virtual leak The effect caused by the outgassing of contaminants relating to the contents within an otherwise leak tight vacuum chamber Viscous flow The state of gas flow where the mean free path is less than the dimensions of the vacuum vessel so that molecules collide with other molecules rather than RGA for Windows Manual SP104001 Rev 2 50 Page 223 with the vessel walls Typically occurs above 1x10 2 mbar There exists a region between 1x10 2 and 1x10 4 mbar where a mixture of viscous and molecular flow occurs RGA for Windows Manual SP104001 Rev 2 50 Page 224 Appendix B Mass Spectral Interpretation Introduction When the mass spectrum of a vacuum system has been taken the first question is probably What do all those peaks mean Although at first sight they may appear complex interpretation in fact is a relatively simple matter Major peaks The first task is to identify the mass numbers of the ma
227. se is used Topics Topic Names The following topics are supported RGA Atall times Bar Chart Only when Bar Chart mode is active Peak Jump Only when Peak Jump mode is active Multi Trend Only when Multi Trend mode is active Leak Check Only when Leak Check mode is active Analogue Only when Analogue mode is active Fast Scan Only when Fast Scan mode is active Note that topic names consisting of two words have exactly one space between the first and second words If multiple heads are being run then the topic name will have a single digit number between and 9 that corresponds to the head number appended E g Peak Jump3 Like application name the topic name can be in upper or lower case 7 3 Items To allow easy access to peak data and system information a number of items are available which may be read at anytime using DDE links into other programs e g Excel Quattro Pro Lotus 1 2 3 or your own custom program The following items are available in the topics indicated Topic RGA RGA for Windows Manual SP104001 Rev 2 50 Page 176 Item DDEData This is a general purpose item which is used to hold the results of various commands e g READMODE and READFILAMENT It also contains the error message if a DDE command fails Topic ANALOGUE Item TotalPressure The total pressure value is available in this item if total pressure measurement is enabled Item ScanNumber This item is set to zero when the mode starts an
228. sent must be a DDE Enabled 1 because until it is received by RGA for Windows all other commands will be ignored To assist you in becoming familiar with DDE for RGA for Windows a simple application called DDETEST EXE may be installed It can send either single commands or can play a script of commands It deals automatically with sending a DDE Enabled 1 command Enable DDE Application RGA4WIN Topic RGA DDE Enabled n n 0 DDE disabled n 1 DDE enabled This command must be sent with n 1 before any other commands can be used It causes RGA for Windows to operate in a different way All message boxes are disabled Help bar shows DDE Enabled and does not change if the mouse pointer is moved over Icon or Setting buttons Filament warm up forms are unloaded immediately although filaments still come slowly up to full power RGA for Windows Manual SP104001 Rev 2 50 Page 179 Modes do not save their settings when they exit 7 5 Select Mode Command Selecting modes Application Topic RGA RGA4WIN Any one of the six scanning modes or the non scanning Mode Select mode can be started with the mode command In addition to starting the mode none some or all of the parameters associated with that mode may be specified All parameters are optional and if not sent the last saved values will be used Any parameter in the list may be skipped by putting nothing between consecutive semicolons MODE mode p1 p2 pn mode
229. settle time in 1 enabled Variable O channel disabled l channel enabled 1 to max mass of instrument O total pressure 1 amp 2 analogue input 1 and 2 5 to 14 10 to 10 0O off 1 on O faraday 2 mult x100 3 mult x1000 0 off 0 off values 0 14 8 9900 RGA for Windows Manual SP104001 Rev 2 50 Page 168 SETTLE milliseconds 6 2 6 Print Command Command PRINT In a macro a line containing the single word command PRINT will cause the current scan to be printed The effect of this command is the same as clicking on the Print button See example 6 Command MOVEFORM x y width height This command is used to re size and position the RGA for Windows window x is the horizontal distance from the top left hand corner of the screen y is the vertical distance from the top left hand corner of the screen width is the width of the RGA screen height is the height of the RGA screen All four values are expressed in pixels 6 2 7 Head Command Command HEAD n The Head command is used to change to another RGA head in a multi headed system The number n will be the head number See example 3 6 2 8 Moveform Command Command MOVEFORM x y width height This command is used to re size and position the RGA for Windows window x is the horizontal distance from the top left hand corner of the screen y is the vertical distance from the top left hand corner of the screen width is the width of the RGA scre
230. sion current flows from the filament to the source grid This current is monitored continuously and if it cannot be maintained at the correct level this condition is detected One of two possible actions will occur depending on the setting of the Filament Off when failed check box in the Filament Protect Filament menu When enabled default setting the filament will be switched off by an emission trip and the Filament Protect Trip Fault detected with filament emission message will be displayed The Filament button will indicate an off and broken filament When not enabled the filament supply will remain on and the message The filament emission is incorrect Check filaments and refer to the manual will be displayed The Filament button will indicate an on and broken filament If the emission current returns to normal then the filament button will return to On and working but the warning message will remain until it is acknowledged or the filament buttons are clicked Partial pressure trip When the partial pressure trip is enabled any partial pressure measurement exceeding full scale will cause the filament to be switched off and the Filament Protect Trip Check the partial pressure trip message will be displayed The Filament button will indicate that the filament is off RGA for Windows Manual SP104001 Rev 2 50 Page 97 The partial pressure trip is only active when partial pressures are being measured and it will give
231. ste aa Seves dota gi Rees cone ew 68 4 5 3 Bat Chat ici rada 68 ASA Peak UIMP a eit s 69 4 5 5 Multi tre encina ae 70 45 68 Leak check a ean 71 4 6 Guided TOUR si des sevedesnscsdepstee vitae ieee degnteevdtentlendegateevegantes ios lies 72 4 6 1 Before you start ccccccccssccesssceeseeeeseeesseeesseeseteeesseeeseees 72 4 6 2 Maximum pressure limitatiOOS oooooocononccconcncononcnonncnononos 73 4 7 Running RGA for WindoWS coooccoooncnonncconcnconnncnanncnoncononcnconnnonnnos 73 4 7 1 Using the help bar oooooocnnoconiococnooncnonccnoncncononononccnonncnononos 75 4 8 Mode Select WindoWi estimase aa a a 76 4 9 Running Diagnostics cooocccooccnononcnonncoonncnononcnnnncnnnncnonnnnonnncannnonnos 78 4 10 Setting a Total Pressure TllP ooooccnnnnononcnconcncnonncnonncnoncncnnnnonnnos 79 4 11 Starting the Bar Chart Mode ooooonooccconccconcnconnncononononcnnoncnconononnnos 79 4 11 1 Changing the Scan accuracy oooccooccnonccconcnconenonnnncnnnncnononos 82 4 11 2 Changing the mass span ooooocoooccnooncoonncnoncncnnnncnnnncnanncnonnno 82 4 11 3 Total pressure MeasureMent oooonooccnonccnoncnconnncnnnncnnnncnoncnos 82 4 12 Switching a Filament OM ooooooccnnonocononononncoonnnnononononncnonncnoncnnnnoo 83 4 12 1 Reading the total pressure ooooonooccnonccnoncnconnnconnncnonncnononos 83 4 12 2 Using the autorange feature cee ecesceeteeeeteeeeteeeeneees 84 4 12 3 Checking the multiplier ooooocono
232. sures higher than those specified in section Maximum pressure limitations will lead to unreliable operation and will damage the filaments and multiplier Before mass spectra can be produced a filament must be switched on and the emission should be stable at the normal operating level At this point you should check that the analyser is under suitable vacuum conditions Click the Filament 1 button to switch filament 1 on The Filament warming up dialog box is displayed for about 8 seconds At the end of this period the dialog box will disappear and the Filament button will stay depressed indicating that the supply to Filament 1 is on If the emission is within acceptable limits the filament icon on the filament 1 button will change colour from blue to red If a filament alert Message bar is displayed at this time you should refer to the Trouble shooting section for information about how to proceed The filament alert message bar is a red bar which appears near to the top of the screen and contains a description of the fault 4 12 1 Reading the total pressure The total pressure reading displayed should now have changed from 0 0E 5 The exact value will depend on the pressure in your vacuum chamber If you watch the reading for several scans you will probably see the pressure rise This is due to outgassing of the source which is common to this type of equipment when it is first installed The total pressure reading will peak and then start to
233. system are in use by other programs Most computers fitted with the standard two COM ports will use one for the mouse The second COM port will be used to communicate with the Satellite If the second port in your system is communicating with a modem fax or any other device you will have to disable it while configuring or running RGA for Windows 9 3 2 Link to the control unit Satellite not responding A dialog box with the message Satellite Not Responding Check Connections To Satellite may be displayed when you run up RGA for Windows Click on the Retry button and another attempt will be made to establish the link to the control unit If the second attempt fails click on the Cancel button which will exit RGA for Windows Manual SP104001 Rev 2 50 Page 200 the RGA for Windows program and proceed as follows e Switch off the control unit e Check the connection between the PC and the control unit Ensure that the connectors at each end are fully inserted use the screws on the connectors to hold them in place e Make sure that you have correctly identified the COM port number on the PC to which the control unit is connected and that this COM port has been specified in the Configure program e Switch on the control unit and check that the POWER ON and FARADAY indicators on the front panel are lit e Click the RGA Reset icon to start RGA for Windows If the fault persists it is possible that there is a problem with the COM p
234. t Changing the EPROM is quite straight forward and if it is required full instructions will be supplied with the replacement EPROM If you are upgrading to version 2 40 RGA for Windows from version 2 1x where x 0 to 9 you will need to upgrade the software in the Satellite control unit but this can be done using the Satellite Download facility RGA for Windows Manual SP104001 Rev 2 50 Page 58 Remember that you cannot use the Satellite Download facility with Vacscan Plus or Vacscan control units To upgrade to version 2 40 from earlier versions you will have to change the EPROM s in the control unit This is a straight forward procedure please contact your local Spectra service centre for further details 3 31 Baking The Analyser CAUTION The Electron Multiplier SEM MUST NOT be operated at temperatures above 50 C With dual faraday and electron multiplier detector instruments serious damage will be caused to the electron multiplier if it is operated at temperatures above 50 C Where instruments use a standard RF power supply the RF must be removed to bake out so there is no chance of the multiplier inadvertently being switched on It is possible to run instruments using RF power supplies fitted with a bakeable adapter during a bake out In this case only the faraday detector should be used NOT the multiplier No damage is caused to the multiplier by high temperatures provided it is not switched on The only remedy whe
235. t Mode Diagnostics from the menu bar Each supply will show either passed or failed except the multiplier power supply see below for details If a supply shows failed first try running diagnostics again with the RF head disconnected from the analyser then with the RF head disconnected from the control unit This will isolate the problem to either the control unit the RF head or the analyser With Microvision and Microvision Plus instruments just try with the control unit disconnected from the analyser For faraday instruments the multiplier power supply is not checked For dual multiplier and faraday instruments the multiplier power supply can only be checked if the multiplier is switched on If it is off but a filament is on then it will be briefly switched on tested and switched off If there are no filaments RGA for Windows Manual SP104001 Rev 2 50 Page 160 on then it will be reported as Switched Off The RF Tuning parameters are explained in RF Tuning 5 7 Analog Inputs Microvision Vac Check 100 Satellite Vacscan Plus and Vacscan instruments are fitted with two analogue inputs signals from which may be monitored in the channel based modes by selecting AIl or AR Microvision Plus instruments are fitted with four analogue inputs signals from which may be monitored in the channel based modes by selecting AI1 to AI4 Further details about analogue inputs can be found in the relevant control unit manual 5 8
236. t in the Selected Mass box either by typing the value or by using the spin buttons Click on the As Major Peak radio button to display only those spectra where the chosen mass is the major peak or click on the As Any Peak radio button For example choose mass 28 and select As Any Peak the 62 entries in the standard library will be filtered down to 15 which contain a peak at mass 28 Select mass 28 as the major peak and there will be 5 library entries available Library edit To edit a library entry select the required spectrum by using the Next and Previous buttons in the library window then click on the Edit button The Library Edit dialog box will be displayed as shown below RGA for Windows Manual SP104001 Rev 2 50 Page 123 Library Edit xi Edit Carbon Dioxide Eormula Major peak 44 Comment Intensity E Bra Cancel All of the entries may be edited except for the name Carbon Dioxide in the above graphic Position the cursor in the appropriate box and type the required value or text or use the spin buttons Once you have completed the changes click on the Ok button Library add To add a library entry click on the Add button in the library window A dialog box virtually identical to the Library Edit dialog box will be displayed Proceed in the same way as for editing a library entry except you must now add a name Library files The Library data is contained in the file spectra mdb Y
237. t of the Number of Comms cards fitted text Click on the appropriate number in the dropdown list Note that 0 is selected when a comms card is not fitted and the two built in comms ports Com and Com2 are to be used Now you should choose whether you wish to carryout a standard or custom configuration The standard configuration will use our default settings for the assignment of heads to ports addresses to ports and IRQ settings These default values will work successfully on the majority of computers and the various settings are given at the end of this section The custom configuration allows the user full control of the set up of RGA for Windows We recommend using the standard configuration if at all possible To select the standard configuration click on the Standard configuration radio button and then click on the Ok button To select the custom configuration click the Custom configuration radio button and then click on the Ok button The custom configuration window will be displayed as shown below which lists the nine possible comms ports with those not available being grayed out For example Coml will RGA for Windows Manual SP104001 Rev 2 50 Page 50 often be grayed out because the mouse is connected to Coml Each of the available Comm ports can be assigned to a group either group 1 for the first four heads or group 2 for heads 5 to 8 Also each of the four heads within a group may be assigned to a particular Comm port To do
238. t out to the printer after checking that the printer is switched on has paper loaded and is plugged in RGA for Windows Manual SP104001 Rev 2 50 Page 206 to your PC try printing from another application e g Note pad If you cannot print from Note pad the printer has probably not yet been configured for Windows see the documentation supplied with the printer and or Windows for details of how to configure 9 6 3 Drive path error Error message The drive or path does not exist When configuring disk store selecting a drive that cannot be read by DOS will cause this error e g selecting a floppy disk with no disk inserted 9 6 4 Incorrect disk Error message Incorrect disk inserted Replace with original floppy disk and press Ok to continue During disk store operations if a floppy disk that was read correctly during configuration can no longer be read this error is generated 9 6 5 Comment too long Error message The comment is longer that than 32000 characters Truncate to 32000 characters When saving a comment it must be less than 32000 characters long You have the option of truncating the comment or aborting 9 7 Mass Spectrometer 9 7 1 Diagnostic failure There are a number of faults which would cause a power supply to be reported as failed when the diagnostics are run The failure could be due to a fault with the control unit RF Head or with the analyser To help track down the location of t
239. t then vacuum scan can be programmed to look just at peaks that meet these criteria This will significantly reduce the time taken to perform the vacuum scan The first and last masses to be scanned can be entered in the Masses Scanned First Mass and Masses Scanned Last Mass boxes respectively by typing in the value or using the spin buttons The first gain range to be used in the vacuum scan can be selected by clicking on Start Range and then clicking on the required value from the dropdown list The last range may be selected in a similar manner by using the End Range dropdown list box Myo There are only two start ranges and two finish ranges available due to the wide dynamic range of the amplifier system used in the Microvision Plus The exact ranges available will vary depending on the detector selected RGA for Windows Manual SP104001 Rev 2 50 Page 151 The detector may be set to either faraday multiplier x100 or multiplier x1000 and the accuracy may be set to between 0 and 5 To perform the vacuum scan using the Multiplier click on the Multiplier On box to check it otherwise the faraday detector will be used Select the gain range by clicking on the Multiplier Gain dropdown list box and then click on the required gain in the dropdown list In faraday only systems Multiplier On will be grayed out as this will not be available The mode can look for up to twelve gasses but this may be set to be anywhere between one and twelve
240. ted below e The filament has blown please refer to the analyser maintenance section of the control unit manual which will explain how to check this e The RF head is not connected to the control unit Switch off the control unit and connect the RF head to the control unit using the 37 way D type connector It is not recommended that this connection be made when the control unit is switched on CAUTION A filament usually blows because it is being operated at high pressure Before selecting another filament check that the pressure in your system is below that recommended e The RF head is not connected to the analyser Switch off the control unit and carefully connect the RF head to the analyser RGA for Windows Manual SP104001 Rev 2 50 Page 208 e A short has occurred within the analyser Run diagnostics Depending on where the short is a number of power supplies will no longer be working To confirm a short re run diagnostics with the RF head unplugged from the analyser all supplies should now pass The filament power supply in the control unit has failed Run Diagnostics with the RF head disconnected for confirmation 9 7 3 Loss of spectra when using multiplier In dual detector systems it is possible for you to see spectra when you use the Faraday detector but for it to disappear when you use the Multiplier There are a number of checks you can make to track down the cause of this problem If you are not currently usi
241. ted do not suit your vacuum system they may be changed either by typing in a new value or by clicking on the spin buttons The masses used in calibrate may be set to any mass within the mass range of the instrument Manual calibrate The basic procedure for a manual calibrate is to choose the mass read the partial pressure using the faraday detector adjust the range so that the faraday reading is in the range 0 9 to 9 0 reading the peak with the multiplier detector and adjust the multiplier voltage The multiplier voltage is re adjusted and the multiplier reading re measured until it matches the faraday reading To manually calibrate the multiplier select Multiplier Manual Calibrate Multiplier from the menu bar the Calibrate Multiplier Manual dialog box will be displayed RGA for Windows Manual SP104001 Rev 2 50 Page 105 Calibrate Multiplier Manual x Multiplier Gain E2 x100 z Mass Offset 0 0 Range E Multiplier Voltage Volts ES 202 200 E 09 E 1 ie E S 3 a ih pa a 1 Read Faraday Read Multiplier Ok Cancel The multiplier gain can be selected from the Multiplier Gain dropdown list The required mass for the calibration can be typed in the Mass box or entered using the spin buttons As with the Leak check mode the mass can be fine tuned by selecting a valve between 0 5 and 0 47 from the Offset dropdown list The range for the calibration can be selected from
242. tem will not need this feature and will operate correctly without it e Ifthe Settings menu is displayed in analogue mode but the controls in the RF Tuning dialog box do not function correctly then you may be RGA for Windows Manual SP104001 Rev 2 50 Page 210 using an incompatible RF head This problem will occur if you try to use an RF head which was not purchased as part of an RGA for Windows system 9 8 2 Why we need RF head settings In order to produce a functioning sensor package RF head and Analyser the RF head must be tuned to compensate for slight variations in analyser characteristics The tuning affects the mass alignment and the resolution of the analyser RF heads and analysers should usually be treated as a matched pair Under these circumstances it should not be necessary to tune the RF head The parameters which match the RF head to the analyser are stored in a data file which is part of the RGA for Windows environment If you have more than one sensor package which you run from a single PC then the tuning parameters for each sensor package must be loaded into the data file When you run RGA for Windows you will have to ensure that you select the correct RF head analyser pair from the list provided In some applications one RF head is connected to several different analysers in turn In these circumstances each RF head analyser combination has to be treated as a separate RF head analyser pair Note in Microvis
243. termined and it is this value which is plotted To start the Bar Chart mode either click on the Bar chart button on the icon bar or select Mode Bar Chart from the menu bar First Mass Bar Chart The starting mass of the scan is determined by this parameter It is variable in the range of 1 to maximum mass mass span 1 The label on the x axis will always start with a mass one less than the first mass and is not included in the scan To increment and decrement the first mass click the up TP and down 4 arrow buttons next to the first mass button on the setting bar To set it either click the first mass button or select Settings First Mass from the menu bar The Bar Chart Settings dialog box will be displayed The first mass may be changed by clicking on the spin buttons or typing a new value Selecting Settings Set All or pressing CTRL E will also display the Bar Chart Settings dialog box Mass Span Bar Chart This parameter determines the number of consecutive masses that will be scanned It can be set to a value in the following list up to the maximum mass of your instrument 10 20 50 100 150 200 300 To increment or decrement the mass span click the up and down 4 buttons next to the mass span button on the setting bar To set it either click the mass span button or select Settings Mass Span from the menu bar The Bar Chart RGA for Windows Manual SP104001 Rev 2 50 Page 119 Settings dialog box will be d
244. th Signals 25 to 36 respectively Channels to 12 on head 4 are associated with Signals 37 to 48 respectively 5 5 4 DIGIO INI file Below is a listing of the DIGIO INI file PORTS Number of 8255 1 8255 1 Base amp H300 0 Output 1 Input 8255 1 PortA 0 8255 1 PortB 0 8255 1 PortCH 0 8255 1 PortCL 0 SIGNALS No Of Signals 24 Port Address 1 amp H300 Bit Mask 1 H01 Port Address 2 amp H300 Bit Mask 2 amp H02 Port Address 3 amp H300 Bit Mask 3 amp H04 Port Address 4 amp H300 Bit Mask 4 amp H08 Port Address 5 amp H300 Bit Mask 5 amp H10 Port Address 6 amp H300 Bit Mask 6 amp H20 Port Address 7 amp H300 Bit Mask 7 amp H40 Port Address 8 amp H300 Bit Mask 8 amp H80 RGA for Windows Manual SP104001 Rev 2 50 Page 158 Port Address 9 amp H301 Bit Mask 9 H01 Port Address 10 amp H301 Bit Mask 10 amp H02 Port Address 11 amp H301 Bit Mask 11 amp H04 Port Address 12 amp H301 Bit Mask 12 amp H08 Port Address 13 amp H301 Bit Mask 13 amp H10 Port Address 14 amp H301 Bit Mask 14 amp H20 Port Address 15 amp H301 Bit Mask 15 amp H40 Port Address 16 amp H301 Bit Mask 16 amp H80 Port Address 17 amp H302 Bit Mask 17 amp H01 Port Address 18 amp H302 Bit Mask 18 amp H02 Port Address 19 amp H302 Bit Mask 19 amp H04 Port Address 20 amp H302 Bit Mask 20 amp H08 Port Address
245. the Range E dropdown list This should be selected so that the faraday reading is in the range 0 9 to 9 0 To make a faraday reading click on the Read Faraday button to make a multiplier reading click on the Read Multiplier button In manual calibrate the instrument is continually taking measurements either with the faraday detector or the multiplier detector depending which was last selected The multiplier voltage is adjusted by clicking on the arrows either side of the scroll bar or by dragging the scroll bar As the scroll bar is moved the value RGA for Windows Manual SP104001 Rev 2 50 Page 106 in the Multiplier Voltage box will change Alternatively a new value can be typed in the Multiplier Voltage box this value should be in the range 700 to 1500 volts Once the multiplier has been calibrated click on the Ok button to exit the calibrate multiplier routine Clicking the Cancel button will exit without any of the changes you have made being implemented Multiplier gain The amplification factor for the multiplier can be set to either x100 or x1000 by selecting Multiplier Multiplier Gain from the menu bar and clicking on either E2 x100 or E3 x1000 This gives working ranges of E 07 to E 13 for x100 or E 08 to E 14 for x1000 when the multiplier is switched on This can be compared with the working range of E 05 to E 11 in Faraday Notice that above the M on the Multiplier button the multiplier range is shown this wil
246. the menu bar and click the Filaments Off radio button followed by Ok Note that switching a filament off will cause the multiplier to trip if it was on See section Error Reference source not found To avoid shortening filament life we recommend that filaments are switched off 10 to 15 minutes before a vacuum system is vented to atmosphere Filament states The filament buttons show which filament is selected filaments off filament 1 on or filament 2 on and the state of the selected filament The states that the filaments can be in are OFF Both filaments are off no partial or total pressure measurements can be RGA for Windows Manual SP104001 Rev 2 50 Page 95 made Both buttons are raised ON The selected filament is operating correctly the button is depressed and the filament is red showing a working filament FAILED This shows that the filament supply is on but the emission current is outside the normal operating range Possible reasons for this are The filament has blown The RF head is not connected to the control unit The RF head is not connected to the analyser A short circuit has occurred within the analyser The filament supply has failed The button will remain pressed but its picture will change to show that the filament is not operating correctly Note that a filament failing will cause the multiplier to trip if it was on See section Multiplier Detector For further information about how to procee
247. the two types are not interchangeable Using RS422 makes no difference to the software as the serial protocol is the same Connection of the system is the same as RS232 systems At the time of writing none of the Spectra range of control units support RS485 although it is planned to be offered in the future The Satellite comms card does not support RS485 3 27 Windows System Ini File The windows system ini file contains the line comm drv comm drv during the installation process our own comms port driver is loaded on to your computer to allow serial communications with more than four peripherals the limit in Windows The above line will be replaced with the line comm drv c spectra ledacomm drv assuming you use the default directory 3 28 Default Comms Settings No Comms Cards Fitted Port Com Group Head Base Address IRQ Built In 1 1 1 1 03F8 4 Built In 2 2 1 2 02F8 3 None 3 None None Off Off None 4 None None Off Off None 5 None None Off Off None 6 None None Off Off None 7 None None Off Off None 8 None None Off Off None 9 None None Off Off This is used when one or both of the built in comms ports are to be used RGA for Windows Manual SP104001 Rev 2 50 Page 53 Note if no comms card is selected and the mouse is connected to COM1 only COM2 will be shown as available to RGA for Windows 3 28 1 One Comms Card Fitted Port Com Group Head Base Address IRQ Built In 1 1 None None 03F8 4 Bu
248. thin 0 3 amu of a whole mass number e Resolution is a measure of the peak width The normal resolution is when the peak width at 5 of the peak height is lamu e Both the mass alignment and resolution have two controls a high mass control and a low mass control There is an interaction between them e The low mass control has an effect on peaks throughout the mass range and its effect tends to be the same on low masses and high masses e The high mass controls effect higher masses but do have a smaller effect RGA for Windows Manual SP104001 Rev 2 50 Page 214 on low masses To tune the RF you will need to have at least three peaks in your vacuum system a low mass peak 2 or 4 amu an intermediate peak 12 to 28 amu and a high mass peak 40 amu or above In the following RF tuning example we use hydrogen mass 2 as the low mass peak water mass 18 as the intermediate peak and carbon dioxide mass 44 as the high mass peak 1 Set the mass 2 alignment and resolution using the low mass alignment and low mass resolution controls 2 Set the mass 18 alignment and resolution using the high mass alignment and high mass resolution controls 3 Set the mass 2 alignment and resolution using the low mass alignment and low mass resolution controls 4 Set the mass 44 alignment and resolution using the high mass alignment and high mass resolution controls 5 Set the mass 18 alignment and resolution using the low mass alignment
249. this each time you run up the RGA see Running Diagnostics and Diagnostics Change Head Button RGA for Windows Manual SP104001 Rev 2 50 Page 77 This button will only be shown if you are running the Multi Headed version of RGA of Windows Click on the this button to change to another head see Multiplexer and Loader Help Button Click on the Help button to enter the on line Help system This system is not the same as this Help Manual or the paper manual See Help 4 9 Running Diagnostics Having found the Run the Diagnostics button see Mode Select Window you should now click on it to start the diagnostic procedure The Diagnostics dialog box will be displayed and as the diagnostic procedure progresses the results are displayed When complete the dialog box should look similar to the one shown below s Microvision Diagnostics E Software RGA for Windows RWw 2 40 0 0 300D Instrument ST 1 50a 0 0 in Microvision Plus Spectra VBX VX 2 32 ComLib M1 1 02 r Hardware Configuration Serial Number LM70 00397010 Maximum Mass 300 R F Board ID LM70 100 300 Sem Supply 3 0Kv Analogue ID LM70 105 Power Supplies pR F Tuning Degas Supply Passed Current settings Multiplier Supply Switched Off 130 Volt Supply Passed Low Mass Alignment 105 15 Volt Supply Passed High Mass Aligmment 107 5 Volt Supply Passed z 15 Volt Supply Passed Low Mass Resolution 129 E
250. ting bar To set the interval either click the Interval button or select Settings Interval from the menu bar Elapsed time Every 10 times the time interval the trend will be marked with a tick on the time axis and if there is sufficient space the time is printed You may elect to show this time either as the time elapsed from the start of the mode or as real time taken from your PC s clock If the real time clock is incorrect select Control Panel in Windows main group then select Time Date and set the correct time and date Win95 Click on the Start button on the Taskbar then select Settings RGA for Windows Manual SP104001 Rev 2 50 Page 148 Control Panel Double click on the Time Date icon in the Control Panel window When the elapsed time is changed the existing peak data will be redrawn with the new time displayed To change from elapsed to real displayed time select View Time Label Display Elapsed Time from the menu bar Vertical label The time labels can be displayed vertically or horizontally To enable the vertical label select View Time Label Vertical Label from the menu bar Vertical time labels are not available if all vertical labels have been disabled from the File Preferences Vertical Labels menu item in the Mode Select screen Vertical labels will use more Windows system resources Continuous trace The trace can be plotted as either dots with one dot representing each measurement or as a se
251. ting portrait printouts Size of font used when printing landscape RGA for Windows Manual SP104001 Rev 2 50 Page 195 printouts 8 2 Print Company Logo There is the option to customise the appearance of printouts produced from RGA for Windows by replacing the Spectra logo with other text or your own company logo Say we wanted to replace the Spectra logo with the text UNIVERSITY CHEMISTRY Department We want this text written in the font Times New Roman and to be 24 points high on portrait printouts and 16 points high on landscape printouts Add the following section the RGA4WIN INI file PRINTER Company Name UNIVERSITY CHEMISTRY Dept Company Font Times New Roman Portrait Size 24 Landscape Size 16 You must ensure that the true type font you want to use is installed To check this from Windows Program Manager choose Main Control Panel Fonts Please refer to the Windows manual for further details on true type fonts Your company may have its own logo which you wish to use It needs to be available as a true type font and then it is installed as any other font is refer to Windows manual and can be specified in the INI file as shown above 8 3 Software Switches There are a number of software switches used to control the way in which RGA for Windows starts up Normally the user does not have to concern himself with these as they are automatically inserted during the installation and configurati
252. tion at high pressure the multiplier can only be switched on when a filament is on and working The multiplier gives two main advantages over a Faraday cup system Firstly smaller partial pressures can be measured 2 0E 14 compared with 2 0E 11 and secondly for a given partial pressure measurements will be made more quickly more accurately or both The multiplier on off setting applies to all modes in the instrument rather like filament In the non channel modes i e Bar Chart Leak Check and Analogue the multiplier detector is simply on or off In the channel modes Peak Jump Multi Trend and Fast Scan the multiplier on off setting is an enabling switch for the individual detector settings in each channel The multiplier on off setting must be set to on to be able to switch the multiplier on in any of the channels The multiplier gain setting x100 or x1000 is set separately for each channel In the channel modes the multiplier gain setting is no longer displayed above the M on the Multiplier button If the detector for a channel is set to multiplier but the multiplier is not switched on then that channel will not read a partial pressure and a message box will be displayed to warn the user This message box may is enabled or disabled by selecting File Preferences Channel Mode Multiplier Warnings in the mode select screen When a tick 4 is shown the message box will be displayed this is the default setting CAUTION The Electro
253. tion to the satellite has been lost A dialog box with the message Connection to the Satellite has been lost Restart RGA for Windows may appear if the control unit is switched off or the cable between the PC and control unit is unplugged It should not occur under normal operating conditions An overrun error has occurred This error may occur on some slower PCs or when other applications are using comm ports e g a modem To overcome this problem it will be necessary to use a high performance serial port board fitted with 16550 UARTs We would also recommend the use of Turbo Com2 Plus or Turbo Com Advanced Comm Drivers for Windows 3 1 These drivers are produced by Pacific Comware and may be obtained from your local representative or software retailer Comm port not available A dialog box with the message Comm port n is not available Use the configure utility to select another p gu y port may appear in which case the Comm port defined for RGA for Windows is either currently being used by another application or is not available to Windows Run the Configure utility to select another Comm port Version x xx required If a dialog box with the message This RGA for Windows requires Version Vx xx or later Satellite code where x xx equals 2 00 or greater appears the software in the control unit is an old version The latest Satellite code is supplied with V2 30 RGA for Windows software You can usually download the
254. to by their serial numbers This feature is not required unless you are running several different RGA control units and or RF head and analyser combinations from a single PC Please refer to the RF Tuning section for further details 5 1 11 Disk Store The data from each of the scanning modes may be stored to disk for later review analysis or comparison with other data For details of disk recall refer to the Recall for Windows manual or the Recall for Windows on line help It is important to note that slower machines may not be able to keep up with the data transmissions from the control unit this is especially noticeable in Bar Chart Leak Check and Analogue modes when low accuracy settings are selected If this happens the control unit will pause at the end of a scan until the PC is ready for more data To improve disk storage performance store to a disk that has been cached using e g SMARTDRV Data stored to disk consists of two parts Header This contains information about the mode from which data was stored also more general details such as time date number of scans etc Scan data Each scan stored will generate one line of scan data All data will be stored in ASCII format so it can be easily viewed or imported into a spreadsheet database or text editor The exact data stored varies from mode to mode The grahphic below shows part of a Peak Jump file viewed in Notepad RGA for Windows Manual SP104001 Rev 2 50 Page 10
255. to make note of the following new commands and changes The Fast Scan mode is now supported with DDE Links A new Set Channel command has been added Channel Write Dwell and Channel Write Settle commands have been added to support the Fast Scan mode In the Select Mode command for the channel modes Detector gain can now only be set to 0 or to select faraday or multiplier Using 2 or 3 will cause an error 7 1 Introduction Dynamic Data Exchange DDE is a mechanism by which Windows programs running on the same computer may exchange information RGA for Windows uses DDE in two ways firstly it acts as a data server providing for example Peak heights scan number etc and secondly it accepts commands e g Set mode Read Filament status etc When RGA for Windows is acting either as a DDE server or when it is accepting Execute commands it must be referred to using the Application Topic Item notation The exact detail of how they are put together depends on the client application being used For example Microsoft Excel uses the form Application Topic Item Quattro Pro for Windows uses DDELINK Application Topic Item Visual Basic uses RGA for Windows Manual SP104001 Rev 2 50 Page 175 Control LinkTopic Application Topic Control LinkItem Item 7 2 Application and Topics Application The application name used by RGA for Windows is unsurprisingly RGA4WIN It does not matter if uppercase or lowerca
256. ttings from the previous session Group 2 Reset Used to start the second group of four heads using the default settings Configure This runs the configure program allowing the selection of the comms ports Ports This is a utility program allowing custom configuration of multiple comms ports It is designed primarily for multi headed systems where Spectra Satellite comms cards are being used RGA Help The help files are contained in a separate program and may be opened by double clicking this icon pressing the help button or selecting Help whilst running RGA for Windows Uninstall This utility is used to remove RGA for Windows from your hard drive DDE Test This test program is used with the DDE Links feature and is described in section 5 RGA for Windows Manual SP104001 Rev 2 50 Page 48 Download This is used to upgrade the code in a Satellite control unit refer to Download for more information Recall Recall is a separate program which allows the review of RGA for Windows data files obtained using the Disk Store feature described in Disk Store Please refer to the Recall manual Recall Help Recall has its own help files stored as a separate program again refer to the Recall manual DDE Examples These are example files to help the user with the DDE dynamic data exchange Links feature Please refer to section 5 of this manual Macro Examples These are example files to help users with the Macro feature described i
257. undance of gasses in the vacuum system RGAs may be used to perform a number of different types of analysis Since the demands of different applications vary widely it is necessary to provide a range of optimised general purpose modes of operation To get the best possible performance from the RGA the correct mode of operation should be selected for your particular application The basic modes of operation supported by RGA for Windows are listed below along with a brief description of when they should be used 4 5 1 Vacuum scan Vacuum scan is a fully automated vacuum analysis program that requires the minimum effort to produce useful information about the state of your vacuum system It will scan a user selected mass range for the largest partial pressures within a defined magnitude range as shown below RGA for Windows Head 1 Mode Select File View Filament Multiplier Mode Help SEIS UT Fra SWS Vacuum Scan Masses Scanned Ranges Scanned First Mass Start Range 5 Last Mass 200 End Range Multiplier COn Multiplier Gain E Peaks To Find Accuracy 3 E Run the Vacuum Scan When complete the mass numbers and their magnitudes are listed in descending order as shown below The number of masses reported is variable between 1 and 12 RGA for Windows Manual SP104001 Rev 2 50 Page 66 Yacuum Scan Stored on Jul 18 95 at 22 32 27 Accuracy 3 Multiplier
258. us HLP file by clicking on the Start buton on the Taskbar then selecting Run in the Open box type C SPECTRA RGA4Win HLP and press ENTER You can run RGA4Win HLP from Windows Explorer by double clicking on the file name irrespective of whether the file is on the hard drive or the floppy drive You should substitute drive letters and folder names as appropriate for your system You can add a Shortcut to the desktop start menu or folder to open RGA4Win HLP consult your Windows documentation or on line help if you do not know how to do this 1 2 2 Using the Help Manual The first page of the Help Manual consists of a Contents page containing links to other sections of the manual it is equivalent to the contents page in the printed manual At anytime you can click on the Contents button to return to this page By using the lt lt and gt gt buttons you may scroll through the manual just as you would by turning the pages of the printed manual In addition you can use the Hypertext links to jump to related sections of the manual The hypertext links are the words or phrases that appear in green type We recommend that you start by using the Disk version of the Manual on the PC in your office together with the printed manual Spend 10 minutes using the two together before installing the Disk Manual on the PC in the cleanroom where the printed manual is not allowed RGA for Windows Manual SP104001 Rev 2 50 Page 3 This page is de
259. use the cable supplied as an extension to your cable ENSURING THE CABLE SUPPLIED WITH THE EQUIPMENT IS PLUGGED INTO THE PC RGA for Windows Manual SP104001 Rev 2 50 Page 43 Identify the serial port to which you will connect the first control unit It is worth making a note of which control unit is connected to which port for example Head 1 to Port 1 Then connect the remaining control units Note that it is only necessary to have the control units connected to the PC to run RGA for Windows you do not have to have the RF power supply or analyser connected at this stage In the case of Microvision and Microvision Plus the unit does not have to be connected to the analyser However if you enter one of the scanning modes an RF Failed message will be generated As part of the installation process the configuration program will be run This will determine which serial ports are available on your PC and ask you to specify which one is connected to each control unit 3 20 Installing Share Multi If you are installing RGA for Windows to run under Windows 3 1 you will need to install SHARE If you are installing RGA for Windows on later versions of Windows such as Windows for Workgroups 3 11 or Windows 95 you will not need to install SHARE so you may skip this section The SHARE program is supplied with DOS and allows different programs to use common files in an orderly fashion RGA for Windows will not run without this command as the Mic
260. use Conventions RGA for Windows only uses one mouse button If you have a mouse with more than one button the left mouse button is the one you will use unless you have configured your mouse differently Point Position the mouse pointer so that it rests on the object to which you have been instructed to point RGA for Windows Manual SP104001 Rev 2 50 Page 6 Click Press then immediately release the mouse button without moving the mouse Double Click Press then immediately release press again then immediately release the mouse button without moving the mouse Drag Point to the object to be moved press and hold down the mouse button whilst moving the mouse to reposition the object Then release the mouse button 2 3 1 Microvision Plus features Some of the features in RGA for Windows version 2 40 are only available if the RGA control unit is a Microvision Plus In this manual these features will be marked with the Microvision Plus symbol 2 4 Software Versions 2 4 1 RGA for Windows Version Summary This Help Topic was previously released as RGA for Windows Vwersion Summary LP210004 Rev 1 10 4 Nov 1999 This document contains a summary of the features associated with each release of RGA for Windows since Version 2 00 Version Release Features Date 2 45 1 Nov Windows operating system detection by Configure 1999 Ports and Download programs Can be used with smart comms cards and Windows NT4 Bugs fixes for Year 2000 p
261. utton is held depressed Button group This refers to a group of three related push buttons which appear on the setting bar in several modes Although the buttons operate just like any other push button they are used to set the same parameter The centre button has an icon indicating to which parameter the button group relates If you click this button a parameter setting dialog box is opened which allows the parameters value to be set The button to the left and right J will decrement and increment the parameter respectively Dropdown list box Where a parameter may take one of a limited number of possible values a dropdown list box is used When you click on the parameter a list of available settings is displayed You should then click the required setting as displayed in the list In some cases where the list of options is too long a vertical scroll bar will appear to the right of the list indicating that other possible settings are available The range control on the setting bar is an example of a dropdown list box 4 5 Quadrupole RGA Quadrupole residual gas analysers are regularly used to characterise and monitor vacuum environments at pressures below 1x10 mBar Operation at higher pressures is carried out using a quadrupole with a high pressure adapter The spectra obtained by plotting ion current against mass can RGA for Windows Manual SP104001 Rev 2 50 Page 65 provide the user with valuable information on the relative ab
262. utton the Head Select dialog box will be displayed Click on the Heads dropdown list box and a list will be displayed showing heads 1 to 8 Select the desired head by clicking on it then click the Ok button If RGA for Windows cannot connect to the new head if the control unit is switched off for instance then it will re connect to the previous head Loader The Loader is a software routine which starts all the heads in a group sequentially and allows them to run simultaneously by running multiple instances of RGA for Windows Due to the limitations of Windows only four heads may be run simultaneously so the maximum number of eight heads is split into two groups Group 1 and Group 2 each containing a maximum of four heads RGA for Windows Manual SP104001 Rev 2 50 Page 88 To start RGA for Windows using the Loader double click on the appropriate Group program item icon or Reset icon if a reset is required The first head in the group will be started and once its mode select screen has been displayed the second head in the group will be started This procedure will continue until all the heads in the group have been started Note that the mode select screens will be displayed in a reduced size so that all four screens can be tiled and displayed simultaneously If a head cannot be started for instance it may have been disconnected a warning box will be displayed You can attempt to start the head again by clicking on the Retry butt
263. vailable in this item if total pressure measurement is enabled Item ScanNumber This item is set to zero when the mode starts and is incremented each time a scan ends It is useful for synchronising reads of the PeakData and TotalPressure items Item PeakData 1 12 These items are the peak heights for the twelve channels Topic PEAK JUMP Item TotalPressure The total pressure value is available in this item if total pressure measurement is enabled Item ScanNumber This item is set to zero when the mode starts and is incremented each time a scan ends It is useful for synchronising reads of the PeakData and TotalPressure items Item PeakData 1 12 These items are the peak heights for the twelve channels 7 4 Commands All DDE commands are sent to RGA for Windows using the DDE Execute RGA for Windows Manual SP104001 Rev 2 50 Page 178 function This is available from most programming languages as well as many spreadsheets Consult your applications documentation for details All commands start with a ASCII 91 and end with a ASCII 93 In a command upper or lower case or a mixture of both are allowed and spaces are allowed anywhere inside a command e g PRINT Print and print are all valid commands If an invalid command or a valid command with invalid data is sent then RGA for Windows will fail to respond to the DDE Execute and your program should be prepared to deal with this The first command
264. ve along the mass scale pausing only breifly at the end before re starting at the first mass No scan dot or a stationary scan dot usually indicates some sort of problem RGA for Windows Manual SP104001 Rev 2 50 Page 81 At this time there should be no peaks plotted on the axis in the mode window and the Total Pressure reading should be 0 0E 05 This is of course due to the fact that the filaments are switched off You should however notice that the scan dot is moving along the x axis indicating the progress through the mass scan from mass 1 to mass 50 4 11 1 Changing the scan accuracy The accuracy code allows a trade off to be made between overall scan speed and stability of results It operates by modifying the sampling time at each discrete point in the mass scan The highest accuracy code is 5 which gives the slowest scan speed with the most stable results Change the accuracy code to Accuracy 0 To do this click on the accuracy dropdown list box on the settings bar then click on the Accuracy 0 item Note that the speed of the scan dot has increased If you did not notice the increase in scan speed switch between Accuracy 5 and Accuracy 0 a few times When you have finished playing with the Accuracy code be sure to leave it set to Accuracy 0 This will ensure that the total protect mechanism will operate as quickly as possible when the filament is turned on 4 11 2 Changing the mass span Locate the mass span button group C
265. witch Autoranging on in the Channel Settings dialog box click on Autorange to check tt RGA for Windows Manual SP104001 Rev 2 50 Page 131 Mass The mass parameter determines the type of measurement made in the channel Normally it will be the mass number when a partial pressure measurement is to be performed e g 28 for Nitrogen 32 for Oxygen 18 for Water etc To adjust the mass in the Channel Settings dialog box click on the increment or decrement spin button or click on the mass number box and type in the required value Alternatively you may select either total pressure TOT or one of the built in analogue inputs When using the increment decrement buttons TOT AIl and AI2 can be selected by decrementing below mass or they may be typed in Multiplier Each channel can use either the faraday or multiplier detector independently The Multiplier check box is used to enable or disable the multiplier detector If it is not checked the peak will be measured using the faraday detector When checked the multiplier detector will be used for that channel providing the global multiplier control has been enabled The multiplier button on the icon bar controls and indicates the current global multiplier setting If the global multiplier is not enabled when multiplier is selected in a channel that channel will not be read As with other modes the multiplier gain can be set to x100 or x1000 To select the gain click on the Multiplier Gain dro
266. y 0 or to integrate each reading for 0 25 seconds accuracy 5 The mode also has the ability to autorange however this feature should be used with care as it is possible for a peak to change in value by close to one or more decades and this change be missed Specific Leak Check Features Probe gas mass This is the mass of the gas being used to do the leak checking This is usually Helium mass 4 but for systems where it is undesirable to allow Helium into the vacuum chamber such as cryo pumped systems then Argon mass 40 is often used The probe gas is variable in the range of 1 to the maximum mass of the instrument To increment or decrement the probe gas mass click the up and down buttons next to the probe gas mass button on the setting bar To set it either click the probe gas mass button or select Settings Probe Mass from the menu bar Mass offset This parameter determines the exact point on the peak where measurements will be made It can be set to a value between 0 5 amu and 0 47 amu in steps of approximately 0 03 amu To increment or decrement the mass offset click the up and down buttons next to the mass offset button on the setting bar To set it either click the mass offset button or select Settings Mass Offset from the menu bar Audio tone An audio tone with a frequency pitch proportional to the peak height currently being measured may be enabled or disabled the higher the frequency the larger the pe

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