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1. 110 Acquire Menu 4 3 5 vies ys eeu ir Ar 42 Acquisition presets 57 ADE are h Beh Op SA Sen oe GRAS ei eine DA SSS 1 ADO SUD preti SALINE asa 51 Amplifier gain A e ERI RO A Ae Cee eas 114 Analog to digital converter see ADC 1 Anticoincidence 51 78 Arguments EXPO i 2 a6 bor AA 29 O DANA 31 Associated files droni 285 4 24 Auto mode in InSight mode 76 Baseline Restorer 46 77 DUI sci 43 105 Calibration sisters taaan sa 85 Cener ave WG A ee UG oe cite 19 101 Clear ROL coorte ei 18 97 106 Clear spectrum variante 18 43 105 Coincidence 1 ide SES Rae ee 51 78 Command line MAESTRO xc esi tt ruas s 157 TRANSE Eose SRI 155 WINPLOTS veros ains ias 148 Compare spectra 40 103 110 Copy to buffer ta ic cadevnae osare 43 105 Count rates isa os eh RS Te Se Sh BS ceed 47 48 INDEX Dede tiene alert 47 58 78 A anita 76 Detector lock unlock password 94 PIU sis ir 14 19 status A SAG Re eee ORR 16 Detector listo Lira atan srt ts 14 A sie e hat cee Aa 59 Held dato ss hae ta e AS eet Aa 65 state of health status 66 Directories MAESTRO file locations 33 Display mode points fill 102 spectrum colors vasco sacri sian 103 Displavimionik 5s 304446468 sitos 99 Drag and drop escudo tados 23 DSPEC PRO ADC setup sra desse 51 amplifier set
2. Fig 17 Radio Buttons Checkboxes Fig 18 are another common feature allowing one or more of the options to be selected at the same time The ROI Peak and Library indexing buttons on the Status Sidebar are useful for rapidly locating ROIs or peaks and for advancing between entries in the library When the last item in either direction is reached the computer beeps and MAESTRO posts a no more message on the Fig 18 Checkboxes Supplementary Information Line Ifa library file has not been loaded or the Detector is not calibrated the Library buttons are disabled and shown in gray I Print to file IV Print to display The indexing buttons are displayed in two different ways depending on whether MAESTRO is in Detector or buffer mode This is shown in Fig 19 22 3 GETTING STARTED In Detector mode the buttons appear at the bottom of the Status Sidebar cia In buffer mode the buttons are overlaid where the Presets and indexing 4 at buttons are displayed in Detector mode G Pek e tl Library The ROI Peak and Library buttons function the same in both modes In buffer mode the additional features are the ability to insert or delete an ROI with the Ins and Del buttons respectively located between the ROI indexing buttons and to display the peak information for an ROI with the Info button located between the Peak indexing arrows ae 4 e at The Library buttons are useful after a peak has b
3. Fast CC Slow Lup 50 E Pole Zero Auto 2064 4 Other Controls DRTEC 11 00 45 AM Wed 10Jan 01 Marker 500 50 00 pS 2 Cnts Mcb Model No DSJR 002 Fig 67 The InSight Mode Display before any change entered will be seen If the trigger is turned off the display will be redrawn periodically even if no pulse is there The Delay setting is the time delay between the pulse shown on the display and the trigger level crossing The value of the time delay is shown on the display Just as for the PHA mode display the vertical scale can be adjusted with the vertical adjustments The display can be set to Log mode but the peak shapes do not have a familiar shape in this display The Auto mode will adjust the vertical scale for each pulse The pulse is shown before the amplifier gain has been applied so the relation between channel number and pulse height is not fixed 76 3 MENU COMMANDS The horizontal scale extends from 16 to 256 channels The display is expanded around the marker position which means that in some cases the peak will disappear from the display when it is expanded The display can be switched from the current MCB to another Detector or the buffer The other Detector will be shown in its most recent mode PHA or InSight The buffer will always be shown in PHA mode When you return to the current MCB the display will return to the InSight mode This also holds true if y
4. The mouse can be used to access the menus Toolbar and sidebars adjust spectrum scaling mark and unmark peaks and ROIs select Detectors work in the dialogs every function in MAESTRO except text entry For most people this might be more efficient than using the keyboard The following sections describe specialized mouse functions 19 MAESTRO 32 V6 A65 B32 3 5 1 Moving the Marker with the Mouse To position the marker with the mouse move the pointer to the desired channel in the Expanded Spectrum View and click the left mouse button once This will move the marker to the mouse position This is generally a much easier way to move the marker around in the spectrum than using the arrow keys although you might prefer to use the keys for specific motions such as moving the marker 1 channel at a time 3 5 2 The Right Mouse Button Menu Figure 13 shows the right mouse button menu To open it position the Start mouse pointer in the spectrum display click the right mouse button then Stop use the left mouse button to select from its list of commands Not all of the Clear commands are available at all times depending on the spectrum displayed seid Searls and whether the rubber rectangle is active Except for Undo Zoom In all Zoom In of these func tions are on the Toolbar and or the Menu Bar Peak Info Zoom Out and Sum are only on the Menu Bar under Calculate See Section 4 8 for on more information on the commands
5. 5 KEYBOARD COMMANDS This chapter describes the MAESTRO keyboard commands The keys described in this section are grouped primarily according to location on the keyboard and secondarily by related function 5 1 Introduction Table 3 provides a quick reference to all of the MAESTRO keyboard and keypad functions These accelerators are also illustrated in Fig 105 and discussed in more detail in the remainder of the chapter The accelerators are available only in the MAESTRO window The Title Bar must be highlighted with the active title bar color as set up in Windows Control Panel In addition the active cursor or input focus must be in the spectrum window Similar to other Windows applications the input focus can be switched between MAESTRO and other applications by clicking on the Windows Taskbar pressing lt Alt Tab gt or if the inactive window is visible pointing with the mouse at some spot in the inactive window and clicking The multi key functions such as lt Alt 1 gt or lt Shift gt are executed by holding down the first key e g lt Alt gt lt Shift gt or lt Ctrl gt while pressing the key that follows the sign in the brackets then releasing both keys simultaneously Functions that use the keypad keys begin with the word Keypad e g Keypad lt 5 gt As usual for any Windows application the menus are accessed by clicking on them with the mouse or by using the Alt key plus the key that
6. 25 MAESTRO 32 V6 A65 B32 Services JOB Control Library file Select Peak Select File Sample Description Lock Unlock Detector Edit Detector list ROI Off Mark UnMark Mark Peak Clear Clear All Save File Recall File Display Detector Detector Buffer Logarithmic Automatic Baseline Zoom Zoom In Zoom Out Center Full View Isotope Markers Preferences gt Points Fill ROI Fill All Spectrum Colors Peak Info Font Color F2 or Alt O F2 or Alt M F2 or Alt U Insert Delete Ctrl lt Fn gt F4 or Alt 6 Keypad Keypad Keypad Keypad Keypad 5 page 91 page 96 page 99 Window Cascade Tile Horizontally Tile Vertically Arrange Icons Auto Arrange Multiple Windows List of open Detector and buffer windows Right Mouse Button Menu Start Stop Clear Copy to Buffer Zoom In Zoom Out Undo Zoom In Mark ROI Clear ROI Peak Info Input Count Rate Sum MCB Properties 4 1 File The File menu is shown in Fig 21 If MAESTRO is in Detector mode and the selected Detector is acquiring data the Compare command is disabled gray 4 1 1 Settings The File Settings dialog allows you to specify how the spectrum data are saved exported and imported and to set the directories for file types used by MAESTRO 4 1 1 1 General The entries on this tab Fig 22 control the default spectrum file format and sample description to be sav
7. Library Peak Values The Not In Average A flag in the Peak Flags section of the dialog should be set for these peaks All the peaks marked as Key Line KK must be present before the nuclide will be listed as present on the report If no lines are marked as key lines the nuclide will be listed as present if the first line is in the spectrum 7 2 3 5 Adding Nuclide Peaks To add a peak click on the peak just below the desired insertion point in the peak list then click on Insert This will open the Edit Library Peak dialog all the fields will be blank Enter the necessary information for the peak and click on OK 7 2 3 6 Rearranging the Peak List The entries in the peak list can be rearranged with the Cut and Paste buttons Several peaks can be cut at one time from the list then pasted back into the list into a different order Cut peaks 153 MAESTRO 32 V6 A65 B32 remain queued up for pasting last one first Each relocated nuclide will retain its energy and counts sec values but will be assigned a Rank number according to its new position Click on the peak just below the desired insertion point in the peak list then click on Paste 7 2 3 7 Saving or Canceling Changes and Closing To save this modified library file click on the control menu then Save Library As Either use the current filename which will overwrite the previous values or assign a new filename then click on Save The Library Editor will assign the
8. Mark ROI Clear ROI 3 5 3 Using the Rubber Rectangle Peak Info f Input Count Rate The rubber rectangle is used for selecting a particular area of interest Sum MCB Properties Fig 13 Right Mouse Button Menu for Spectra within a spectrum It can be used in conjunction with the right mouse z button menu in Fig 13 for many functions To draw a rubber rectangle 1 Click and hold the left mouse button this anchors the starting corner of the rectangle 2 Drag the mouse diagonally across the area of interest As you do this the mouse will be drawing a reverse color rectangle bisected by the marker line Note that when drawing a rubber rectangle the marker line combines with a horizontal line inside the rectangle to form crosshairs Fig 14 They make it easy to select the center channel in the area of interest this might be the center of an ROI that you wish to mark or unmark a portion of the spectrum to be summed or a peak for which you want detailed information Marker 310 uncal 25 863 Cnts 3 Release the mouse button this anchors the ending corner of the rectangle Fig 14 The Rubber Rectangle s Crosshairs 20 3 GETTING STARTED 4 Click the right mouse button to open its menu and select one of the available commands Once an area is selected the commands can also be issued from the Toolbar Menu Bar Status Sidebar or keyboard As an example Fig 15 illustrates the process of mar
9. This is available only for SMART 1 detectors Battery voltage This is not used in the DSPEC Pro 56 3 MENU COMMANDS Battery full This is not used in the DSPEC Pro Battery time remaining This is not used in the DSPEC Pro Presets Figure 54 shows the Presets tab MDA xi presets are shown on a separate tab Amplifier Amplifer2 Amplifier PRO ADC Stabilizer High Voltage About Status Presets MDA Preset The presets can only be set on a T bis eee Detector that is not acquiring data Real Time i gt during acquisition the preset field ua Presetin backgrounds are gray indicating that Stat Char they are inactive You can use any RDIPeak wai or all of the presets at one time To disable a preset enter a value of zero eat Su ion ggest Region If you disable all of the presets data Overflow e acquisition will continue until manually stopped Fig 54 DSPEC Pro Presets Tab When more than one preset is enabled set to a non zero value the first condition met during the acquisition causes the Detector to stop This can be useful when you are analyzing samples of widely varying activity and do not know the general activity before counting For example the Live Time preset can be set so that sufficient counts can be obtained for proper calculation of the activity in the sample with the least activity But if the sample contains a large amount of this or another nuclide the
10. created by ROI Save File Section 4 5 7 DI Tmpl fs N11089ag 101 or from the table stored in an spec file i a sella pere This command opens the dialog shown in Maa ia loax roi a Test ci Fig 93 prompting you to select a filename de esa When a file is selected the ROIs in the buffer or active Detector are set to conform to the table in the file The previous ROIs o are cleared The data contents of the buffer Fles type ROI Channels zl cane or Detector are not altered by this operation only the ROI bits in the buffer or Detector Fig 93 ROI File Recall Dialog In ROI and spectrum files the ROIs are saved by channel number Therefore if the spectrum peaks have shifted in position the ROIs in the file will not correspond exactly to the spectrum data 98 3 MENU COMMANDS 4 6 Display Two of the most important functions of MAESTRO are to Display display the spectrum data and to provide an easy and straight Detector Ctrl lt Fn gt forward way to manipulate the data This is accomplished Detector Buffer F4 or Alt 6 using the Display menu functions shown in Fig 94 and their v Logarithmic Keypad associated accelerators The Display functions are available in Automatic Keypad both the Detector and buffer modes Baseline Zoom Zoom In Keypad 4 6 1 Detector Zoom Qui Keypad l x Center Keypad 5 Selecting this function opens the Pick Detector list shown in Poll Via A
11. description and sample description are stored with the spectrum SAVE_ROI d path file roi This command which has the same function as Save File under the ROI menu saves a table of channel numbers that have the ROI set for the active Detector or buffer in a disk file The contents of the spectrum are not altered by this operation The disk filename in quotation marks can be any valid filename with optional elements as described for the SAVE command above The default extension is RoI The loop count value can be included in the filename by typing three question marks in the text where the loop count is to be inserted The loop count replaces wherever it appears SEND_MESSAGE command This command is used to send NIM 488 commands to the active Detector This can be used to perform any operations of the Detector that are desired The text must be in the syntax expected by the Detector If the response from the Detector does not end with a command accepted message this command will exit with error If a user attempts to use this command to send destructive commands to a locked Detector the JOB will fail Use UNLOCK to unlock the Detector before using SEND MESSAGE and LOCK afterward 136 6 JOB FILES The following is an example of using this command to set the fine and coarse gain to a total value of 50 the product of the fine 0 5 and coarse 100 gains SET DETECTOR 1 STOP CLEA
12. see the discussion in Section 4 6 4 This is duplicated by the Vertical Auto Scale button on the Toolbar 5 5 3 Center Keypad lt 5 gt Keypad lt 5 gt forces the marker to the center of the screen by shifting the spectrum without moving the marker from its current channel This is duplicated by the Center button on the Toolbar For more information see Section 4 6 8 5 5 4 Zoom In Zoom Out Keypad lt gt lt gt Keypad lt gt increases the scale of both axes in the Expanded Spectrum View so the peaks appear larger while Keypad lt gt does the opposite making the peaks look smaller The scale value for both axes is always shown on the Toolbar These functions are duplicated by the Zoom In Zoom Out Toolbar buttons 5 5 5 Fine Gain Keypad lt Alt gt lt Alt gt These accelerators step the internal amplifier up or down by one increment of fine gain on the selected Detector if it has a software controlled amplifier The new fine gain setting is shown on the Supplemental Information Line at the bottom of the screen If the gain stabilizer is active the display of the histogram data might not change The fine gain can also be set with Acquire Adjust Controls Section 3 2 3 keyboard lt Alt gt lt Alt gt and lt Shift Alt gt lt Shift Alt gt 118 6 JOB FILES The MAESTRO JOB file consists of one or more lines of ASCII text representing a series of commands that can automate most of the
13. 172 APPENDIX C ERROR MESSAGES Problem with File A file input output error encountered while executing a JOB Problem with LOOP The LOOP statement could not be executed properly in a JOB Problem with RECALL The RECALL statement could not be executed in a JOB Problem with REPORT The REPORT function could not be exercised in a JOB Problem with RUN The specified program could not be RUN from a JOB Problem with SAVE The SAVE function could not be executed in a JOB Sample Changer Hardware Failure The sample changer hardware handshake failed in some way usually the result of too much time before SAMPLE READY is obtained There are no stored spectra to view Job Error 20 An attempt was made to execute the LOOP_SPECTRA or VIEW command on a Detector that does not have any stored spectra The WAIT program was not started by MAESTRO Job Error 23 All programs waited for have to be started by MAESTRO Unable to CALL A JOB error resulting from a problem with the CALL function usually because the file does not exist Unable to COMPARE files of different sizes The COMPARE function requires compatible files Unable to open file STRIP aborted The STRIP function is aborted if the file cannot be read Unable to open file for COMPARE The COMPARE function is aborted if the second spectrum cannot be read 173 MAESTRO 32 V6 A65 B32 Unable to read specified file A JOB error resulting from a problem wit
14. 3 1000 00 1008 00 180678 32715 326 1004 00 20 35 1 51 No close library 4 1553 00 1561 00 22308 1290 108 1557 00 1 16 2 69 No close library 5 1701 00 1709 00 31471 3017 131 1705 00 4 48 2 56 No close library 6 2398 00 2406 00 158807 22421 301 2402 00 18 57 1 99 No close library 7 4070 00 4078 00 465112 50710 507 4074 00 30 20 0 13 No close library Fig 39 Column Style ROI Report On Screen 39 MAESTRO 32 V6 A65 B32 A x Detector 12592 ACQ 07 Jun 1991 at 10 37 33 AT 4219 8 LT 3600 0 a Mixed gamma marinelli on endcap of P40268 ROl 1 RANGE 729 729 00keW to 737 737 00keY AREA Gross 228412 Net 45536 370 CENTROID 733 00 SHAPE FWHM 21 07 Fw 1 5 M 0 79 No close library match ROl 2 RANGE 818 818 00ke to 826 826 00keY AREA Gross 48527 Net 5571 164 CENTROID 822 00 SHAPE FWHM 6 13 Fw 1 5 M 2 38 No close library match ROI 3 RANGE 1000 1000 00keY to 1008 1008 00ke AREA Gross 180678 Net 32715 326 CENTROID 1004 00 SHAPE FWHM 20 35 Fw 1 5 M 1 51 No close library match Y DNIH A DAMAOC 1ER AFFI NOIA ta IRCI 1801 NOIA zl Fig 40 Paragraph Style ROI Report On Screen To close the report display window click on its Close button J or click on the control icon on the left of the title bar and select Close from the drop down menu 4 1 8 Compare This function displays a spectrum from disk along with the current spectrum so the two can be visually compared A
15. A65 B32 4 1 2 4 1 3 4 1 4 4 1 5 4 1 6 4 1 7 4 2 1 4 2 2 4 2 3 4 2 4 4 2 5 4 2 6 4 2 7 4 1 1 3 Import irta Arguments Initial Directory Default Run Options 4 1 1 4 Directories Recall Save and Save As Export Import Print ROI Report 4 1 7 1 Printing to a Printer an 4 1 7 2 Print to display 4 1 8 Compare O ss ossaa 4 1 10 About MAESTRO 4 2 Acquire Start Stop Clear Copy to Buffer Download Spectra View ZDT Corrected MCB Properties 4 2 7 1 DSPEC Pro Amplifier Amplifier 2 Amplifier PRO ADC Stabilizer High Voltage About Status Presets MDA Preset 4 2 7 2 digiDART Amplifier Amplifier 2 ADC Stabilizer UY Li LI UY L L L UY U WW LI Li U 0 oO 4 I DI Vi PW W WN DN e hhh hhh SA NNN c C OU ll di di Wi Wi Wi Vi Vi SI Hp Hp as A 4 LU 00 MAN FP DI UN OLA SD Aa TABLE OF CONTENTS High VOM Na RA Treni 64 Field Data ti ii Ai e eee 65 ES 66 AS A O O 66 Presets trae ute he Satoh so he Coin ai 69 MDA Preset on os tnt AAA ek 70 Nuclide Reports cellule alture EL Da ee are 71 SN Modes sio
16. An Example of the Tradeoff Between Throughput and Count Rate are often specified at a 6 us time constant this setting is equivalent to 12 us peaking rise time in our digital spectrometers Up to some value of rise time one can expect improved resolution with increasing rise time there will however be a tradeoff in maximum throughput to memory Figure 69 illustrates an example of this tradeoff ORTEC digital spectrometers operate well above the peak of the throughput curve Operating there allows these instruments to handle an even higher rate of incoming counts but with less data into memory and therefore longer counting time to the same detection limit It is possible to move the peak of the curve to the right more counts to memory with higher input count rate by reducing the pulse rise and fall time thereby trading off resolution for maximum count rate Table 2 is a guide to choosing a count rate that will ensure that the most efficient operation of your digital spectrometer over the range of anticipated input count rates for your application that is at or below the throughput peak while achieving the best resolution obtainable from the detector consistent with that requirement Enter the rise time that best matches your dynamic range of count rate note that the available rise time settings will vary by instrument this chart is a general guide only Table 2 Rise Time Selection Guide Dynamic Range Throu
17. ETET Ea internal table the values for the MDA 150 0000 Co ed toir 2a edit Delete type selected The MDA type should be chosen before the preset is selected m MDA Preset Cueff uiers here Anrartinn 150 0000 r de N 000000 Nucide Co 60 x E N 000000 Energy 1173 24 kev C 21 700001 Select the Nuclide and Energy from the droplists The Nuclide list contains all the nuclides in the working library Lose The Energy list shows all the gamma Fig 65 digiDART MDA Preset Tab ray energies for the selected nuclide in the library If the application supports efficiency calibration and the digiDART is efficiency calibrated the MDA is entered in the units selected in the application If the unit is not efficiency calibrated e g in MAESTRO which does not support efficiency calibration the MDA field is labeled Correction the efficiency Eff is set to 1 0 and the preset operates as before If the Correction factor is the actual MDA times the efficiency known from other sources the MDA preset will function normally Nuclide Report Figure 66 shows the Nuclide Report tab The Nuclide Report displays the activity of up to 9 user selected peaks Once the report is set up you can view the Nuclide Report at any time on the digiDART display The peak area calculations in the hardware use the same methods as the MAESTRO Peak Info calculation described in Section 4 3 4 so the Nuclide Report dis
18. Information Line below the Marker Information Line used to show library contents the results of certain calculations warning messages or instructions 3 3 Spectrum Displays The Full and Expanded Spectrum Views show respectively a complete histogram of the current spectrum whether from a Detector or the buffer and an expanded view of all or part of the spectrum These two windows are the central features of the MAESTRO screen All other windows and most functions relate to the spectrum windows The Full Spectrum View shows the entire data memory of the Detector as defined in the configuration In addition it has a marker box showing which portion of the spectrum is displayed in the Expanded Spectrum View The Expanded Spectrum View contains a reverse color marker line at the horizontal position of the pixel representing the marker channel This marker can be moved with the mouse pointer as described in Section 3 5 1 and with the lt gt lt gt and lt PgUp gt lt PgDn gt keys Note that in both spectrum windows the actual spectrum is scaled to fit in its window as it appears on the display Also since both windows can be arbitrarily resized a feature of Windows it follows that the scaling is not always by powers of two nor even integral multiples Therefore MAESTRO uses algorithms to scale the window properly and maintain the correct peak shapes regardless of the actual size of the window The vertical scale in the Full Spect
19. It is not necessary to use this command because the filename can be supplied as part of the STRIP command itself however the command is included in the repertoire for backward compatibility with MAESTRO II command files No other action is performed by this command 137 MAESTRO 32 V6 A65 B32 SET _PRESET_ CLEAR This command clears the presets for the active Detector The clearing should be done to ensure that unwanted presets are not used by the Detector when the Detector is started Presets can only be changed when an MCB is not counting The Detector and Detector should be selected by the SET DETECTOR commands before the SET_PRESET_CLEAR command is given as in the following SET DETECTOR 1 STOP SET PRESET CLEAR START SET_PRESET_COUNT lt counts gt This command sets the ROI peak count preset for the active Detector The preset is set to the entered value With this preset condition the Detector stops counting when any ROI channel s content reaches this value If no ROIs are marked in the Detector that Detector never meets this condition This command has the same function as the ROI Peak field on the Presets tab under Acquire MCB Properties refer to Section 4 2 7 for additional information The JOB processor expects one or more numerals as the argument to this command entered with or without quotation marks e g you can enter the numerals 1000 or the string 1000 The JOB processor will also accept the loop counte
20. JOB files and only one JOB at a time can run in a single instance of MAESTRO The only difference in MAESTRO V6 is that a Detector window will open for each SET DETECTOR command in the JOB to a maximum of eight and these windows will function as follows e JOB streams use the SET DETECTOR command to open Detector windows If eight Detector windows are already open and SET DETECTOR is issued to open a ninth window the oldest displayed Detector window will be closed without prompting e Once a Detector window is open it cannot be closed within a JOB except by exceeding the eighth window open e On startup MAESTRO will attempt to open with all Detector windows that were open the last time the program was shut down Therefore when running a JOB from the command line if you wish to see only the Detector window s called from the JOB stream use b on the command line to force MAESTRO to open in a buffer window see Section A 1 When running MAESTRO in interactive mode be sure to close any windows you do not wish to see during the JOB execution e The same buffer window is always selected by the commands in a JOB therefore a JOB does not open multiple buffer windows 120 6 JOB FILES e When you start a JOB a Detector window will open for each Detector called by the JOB file The JOB filename will be echoed on the main MAESTRO title bar as well as on the title bars of all open spectrum windows 6 2 Summary of JOB Commands T
21. MDA Preset The MDA preset Fig 65 can monitor up to 20 nuclides at one time and stops data collection when the minimum detectable activity for each of the user specified MDA nuclides reaches the designated value The MDA preset is implemented in the hardware The formulas for the MDA are given in various textbooks and in the Analysis Methods chapter in the GammaVision user manual and can be generally represented as follows MDA a y b c Counts Live time Eff Yield 70 3 MENU COMMANDS The coefficients a b and c are determined by the MDA formula to be used The Eff detector efficiency is determined from the calibration The Yield branching ratio is read from the working library using the nuclide and energy specified The MDA value is the one you have entered in the dialog Counts is the gross counts in the specified region and Live time is the live time The MDA value is calculated in the MCB given the values a b c Live time Eff and Yield The calculated value is compared with the MDA value on the dialog and when it is lower acquisition is stopped Coefficients A B and C can be Properties x entered as numbers If the application Amplifier Amplifier 2 ADC Stabilizer High Voltage such as GammaVision supports Field Data About Status Presets MDA Preset Nuclide Report MDA calculations you can click on MDA P t Nuclid E Add New the Suggest button to enter from an TORTI ET
22. This is typically an EXE or PIF filename Note that the program might not run to completion before the Jos file exits unless it is run at higher priority or the WAIT program command is used 135 MAESTRO 32 V6 A65 B32 RUN_MINIMIZED program Same as the RUN command above except that the application is run initially as an icon minimized rather than as a normal window SAVE d path file chn This command which has the same function as Save As under the File menu saves the currently active buffer to a disk file The disk filename in quotation marks can be any valid filename the drive d path path and extension CHN are optional If an extension is not supplied the default extension is automatically CHN Also the current drive and directory are used by default when the optional path specification is not supplied The loop count value can be included in the filename by typing three question marks in the text where the loop count is to be inserted The loop count replaces wherever it appears Any Ask on Save questions defined in File Settings are asked each time a SAVE command is executed This stops execution of the Jos file until the question is answered Note that if you choose Cancel for an ask on save prompt the entire save operation is canceled for that particular spectrum The real time live time start of acquisition and if available calibration data Detector
23. V6 A65 B32 Oltra MCB 1 0 4500Y 6US olx File Acquire Calculate Services ROI Display Window Marking 8 Gn OlDlu4 xx tos A 2 gt a2 0001 Giota CB 1 Input 1 Y r Pulse Ht Analysis Mcb Global Service_ MCB 1 Input 1 _ D x E Stat 2 51 52 PM 2 18 03 Real 6 989 58 Live Dead Preset Limits Real 10 000 Live Peak Inta Mcb Global Service_ MCB 1 Input 2 P41570A 4500Y 6US Iof xj Unct Mda EN ROI at EN Peak at tl Library at ORTEC 5 02 37 PM Tue 1721703 Calib Lib 1408 Bytes 9 Nuclides 13 Alloc 14 Peaks 20 Alloc Fig 7 Main MAESTRO Screen Features 3 Toolbar beneath the Menu Bar containing icons for recalling spectra saving them to disk starting and stopping data acquisition and adjusting the vertical and horizontal scale of the active spectrum window 4 Detector List on the Toolbar displaying the currently selected Detector or the buffer Clicking on this field opens a list of all Detectors currently on the PC s MAESTRO Detector pick list from which you can open Detector and or buffer windows When you select the buffer or a Detector from the list a new spectrum window opens to a limit of eight If you selected a Detector the spectrum in its memory if any is displayed 5 Spectrum Area which displays multiple spectrum windows up to eight Detector windows and eight buffer windows simultaneously When you attempt to open a ninth spect
24. a Detector from destructive access e g Start Stop Clear by any program on the PC or network While any program can view the data and read the contents on any Detector in the system locked or unlocked the contents of a locked Detector cannot be changed without knowing the password NOTE There is no master password If the Lock Detector Fx password is lost contact ORTEC Customer EES Service for assistance in unlocking the detector Password p _ Cancel Verify If the Detector is currently unlocked selecting Fig 86 Entering Name Password to Lock Unlock will show the dialog displayed in Lock a Detector Fig 86 Enter the Owner name Then enter a password in the Password field and re enter it in the Verify field the two entries must agree Click on OK The password is not case sensitive that is uppercase and lowercase letters are treated the same If the Detector is currently locked selecting Lock Unlock Detector 121 Unlock will display the dialog in Fig 87 Enter the OK correct password to unlock the Detector Password e Lo Cancel Fig 87 Unlocking a Detector 94 3 MENU COMMANDS Each time destructive access to a Detector is attempted Locked Detector 27x while it is locked the Locked Detector dialog see Fig 88 will ask for the password In addition the Password f owner of the Detector will be displayed on the Cancel Supplemental Information Line as shown in Fig 8
25. as shown on the digiDART spectrum list display or the storage sequence in the DART iiiiiiii is the ID string entered on the digiDART when the spectrum was saved and shown on the digiDART spectrum list display or the text string from the barcode reader in the DART ddddddddd is the date the spectrum was collected as recorded in the MCB ttttttttt is the time the spectrum was collected as recorded in the MCB ext is the extension for the file type selected If any Ask on Save Options are set in the File Settings dialog they will be asked for each spectrum individually Note that if you cancel an ask on save prompt for a particular spectrum any remaining ask on save prompts for that spectrum are not displayed and the spectrum is not saved to disk The spectra are not erased from the MCB after download 4 2 6 View ZDT Corrected This command is active only for a Detector that supports Zero Dead Time ZDT Mode and that has a ZDT mode enabled on the ADC tab under Acquire MCB Properties When the Detector is in a ZDT mode two spectra are collected either live time corrected LTC and ZDT or uncertainty ERR and ZDT see Fig 45 and the discussion in Section 4 2 7 6 The spectrum is labeled in the upper right corner of the Full Spectrum View When you choose ZDT Display Select the ZDT spectrum is displayed the ZDT label appears in the Full Spectrum View and this command has a checkmark beside it on the menu This function is dupli
26. default LIB extension To save this as an MDB format library select the mpB format from the File Type droplist at the bottom of the dialog To exit the edit session click on the control menu then Close To abandon any changes and restore the library file to its condition before editing click on the control menu then Close A dialog will open asking if the changes should be saved select No 7 2 4 Print Library This feature allows you to print out the Licia Paste 1717 library contents from the Services menu Printer The dialog shown in Fig 125 will prompt Nene ES A the user to choose whether the printout R DURA E is ordered by Nuclide or by Energy and Type HP DeskJet 550C Printer whether the output will go to a Printer or ee SRL PONI to File If the output is directed to a printer at set Cancel you can click on Setup to display the arca standard printer selection and setup dialog VI see Section 4 1 6 Answer the prompts and click on OK For output to a file you are asked for a file name for the output Fig 125 Print Library 7 2 5 Close This closes the GammaVision Library Editor and returns control to Windows If the library has been changed but not saved a warning message will be displayed To abandon any changes and restore the library to the condition before editing exit without saving 154 7 UTILITIES 7 2 6 About This displays a window Fig 126 containing gen
27. ee ant ae eed 146 ROL into Seah ogee Rare nee Ratan eo ee RR 146 IO MRO RE DECORI PONE DETTO 146 Horizontal asse le BDA ie 147 NWETIC Alia Oo case ae at Reet ed Psa wear e a aw a mean 147 7 1 3 Command Line Interface fasi beat dbase ae ti eea 4d ee eeu eke eas 148 1 22 NCHS Libra Editore rolla shee kde seeders ton es 148 7 2 1 Copying Nuclides From Library to Library 0 0 0 e eee eee 149 7 2 2 Creating a New Library Manually sc at een sera 150 7 2 3 Editing Library List Nuclides ve s5 steal paga Saeed 151 7 2 3 1 Manually Adding Nuclides viniste 152 7 2 3 2 Deleting Nuclides from the Library 152 7 2 3 3 Rearranging the Library List 2 0 0 0 cece eee eee eee 152 7 2 3 4 Editing Nuclide Peaks siena 153 T233 Adding Nuyclide PEAKS Lo se pes wa dah ad eS eya 153 7 2 3 6 Rearranging the Peak Listino ir dis sa ea 153 7 2 3 7 Saving or Canceling Changes and Closing 154 A a A ata RR a 154 Tye Dy COS dr EDO II CEE OOO TE I RR I SOIT 154 IE NA A IN a EENT 155 Toe RAND oa cos ARES AE 155 APPENDIX A STARTUP AA AAA E 157 A T Command Line Options 4 224260 hdr bed A Bee Ra werd kd a bea 157 PCD IPTO STAINS sc oe ag aoe ks ees AS E ER a TA EOE eS 158 APPENDIX B IEE FORMATS Terure nea ten area tarata RARI 159 Bei MAESTRO Fle ENDESA A es 159 Bolli Dete tor PRES essieu niia dhe ee a tee ee edita 159 B12 Spectrum Files few car hill a 159 Bld Miscellaneous Files tivas t
28. filename will be displayed on the Title Bar 34 3 MENU COMMANDS The format is specified on the General tab under File Settings Section 4 1 1 1 so the file extension should be left at the default setting to avoid operator confusion This is especially true if the spectra are to be used in non ORTEC programs The CHN file format stores the following information along with the spectrum live time real time acquisition start time Detector and sample descriptions and calibration if any The file structure of all the files is given in the File Structure Manual Much more information can be saved in the spc format which is used primarily in GammaVision MAESTRO does not have the ability to generate all of this information so certain parts are not filled However MAESTRO does have the ability to generate ROI records and a list of hardware parameters 4 1 4 Export The Export function is used to write Export Spectrum File spectra in formats other than the usual Lookin E User ct formats or to perform other functions such as plotting or printing the spectrum directly The export program is specified on the Export tab under File Settings as discussed in Section 4 1 1 2 The program can be one of the programs supplied or can be user supplied When Export is a4 selected the Export Spectrum File dialog O CE Carce_ Fig 32 opens Choose the filename of the spectrum to be exported and click on
29. functions described earlier in this manual The details of the commands and the required syntax are given in this chapter A JOB file can be dispatched from the Run JOB File dialog accessed via the Services Job Control menu selection or by including the name of the Jos file on the command line when MAESTRO is first started e g MCA32 DEMO JOB JOB files are used for the following types of functions 1 Performing a repetitive task such as running a sequence of experiments without user intervention 2 Defining initial conditions at startup useful in preloading presets after a power loss for the 916 916A 917 918 918A each time MAESTRO is run 6 1 Job Command Functionality JOB files written for previous versions of MAESTRO e g MAESTRO II or MAESTRO PM can be used The text versions of these files will work on new Detectors as well as older models with the exception of new commands and deleted commands 6 1 1 Loops MAESTRO has the ability to run repetitive loops Furthermore the current loop count can be included as a variable in any string including filenames program parameters and text Data can thus be stored with unique filenames and labeled with unique descriptions 6 1 2 Errors If an error is encountered in running a JoB file the execution of the file stops and control returns to MAESTRO An error code appears in the JOB Control dialog box as described in Section 4 4 1 6 1 3 Ask on Save If
30. gt Selects the Detector or buffer 0 SET_NAME STRIP file chn Sets the strip file SET_PRESET_CLEAR Clears all presets in active Detector SET_PRESET_COUNT lt n gt Sets the ROI Count preset to lt n gt counts SET_PRESET_INTEG lt n gt Sets the ROI Integral preset to lt n gt counts SET_PRESET_LIVE lt t gt Sets the live time preset to lt t gt seconds SET_PRESET_REAL lt t gt Sets the real time preset to lt t gt seconds SET_PRESET_UNCERTAINTY lt uncertainty limit gt lt low channel gt lt high channel gt Sets the statistical preset DSPEC only to the uncertainty 123 MAESTRO 32 V6 A65 B32 SMOOTH Smooths the spectrum in the buffer START Starts the active Detector START_OPTIMIZE Starts the optimize function for the detector DSPEC only START_PZ Starts the pole zero function for the detector STOP Stops the active Detector STOP_PZ Stops the pole zero function for the detector DSPEC only STRIP lt factor gt file Strips a spectrum file from the buffer UNLOCK Pwd Unlocks the current Detector using Pwd as the password VIEW i This command moves the 66599 1 th stored spectrum to position 0 WAIT lt seconds gt Waits a fixed number of seconds can be fractional or until the active Detector stops counting if no seconds specified WAIT program Waits until the named program stops execution WAIT_AUTO Waits until the o
31. input MCBs like the Model 919 or Model 920 all inputs are treated as different Detectors Therefore all CONNECTIONS software will address one physical 919 unit as four distinct Detectors 1 5 Detector Security Detectors can be protected from destructive access by password If your application supports detector locking and unlocking passwords can be set within the application Once a password is set no application can start stop clear change presets change ROIs or perform any command that affects the data in the detector if the password is not known The current spectrum and settings for the locked device can be viewed read only The password is required for any destructive access even on a network This includes changing instrument descriptions and IDs with the MCB Configuration program MAESTRO 32 V6 A65 B32 1 6 Enhancements to MAESTRO for Windows 1 6 1 MAESTRO 32 V6 04 vs V6 E The new Multiple Windows command on the Window menu lets you choose between the newer multiple detector window mode and the original single detector window mode MAESTRO no longer supports operation with Microsoft Windows 95 NT or the earliest release of Windows 98 as distinguished from Windows 98 Second Edition which is still supported Support has been added for the new ORTEC DSPEC Pro DSPEC jr 2 0 Detective Detective EX and trans SPEC MCBs 1 6 2 MAESTRO 32 V6 vs V5 35 l MAESTRO now has a multi detector interface that al
32. need to reenter the password LOOP lt repetitions gt END_LOOP This command pair executes multiple times all the commands between LOOP and END LOOP The number of execution times is specified by lt repetitions gt Each command must be given on a separate line A value of 0 executes once A LOOP with no END_ LOOP statement executes once The loop count value can be included in any text by typing three question marks in the text where the loop count is to be inserted The loop count replaces the first time the question marks appear NOTE Spaces should be included only in the text and not in the filename Filenames with spaces cannot easily be used by DOS commands 132 6 JOB FILES The following is an example SET DETECTOR 1 SET PRESET LIVE 20 LOOP 3 SET Detector 1 CLEAR START WAIT FILL BUFFER SET DETECTOR 0 SAVE TEST CHN END_LOOP The above commands run three 20 second acquisitions and store the data on a disk in files TESTO01 CHN TESTO02 CHN and TEST003 CHN LOOP SPECTRA END_LOOP This command executes the commands within the loop once for each spectrum stored in the Detector hardware This command only works for hardware that supports Field Mode MARK_PEAKS This command does a Mariscotti type peak search on the spectrum in the active Detector or buffer window and duplicates the Calculate Peak Search command The peak search sensitivity is selected in Calculate Settings Each
33. on the keyboard and Keypad lt Alt gt lt Alt gt 5 2 13 Fine Gain Large Move lt Shift Alt gt lt Shift Alt gt lt Shift Alt gt and lt Shift Alt gt step the internal amplifier of the selected Detector if it has a software controlled amplifier up or down by a large increment of fine gain If the gain stabilizer is active the display of the histogram data might not change The fine gain can also be set using Acquire Adjust Controls Section 3 2 3 lt Alt gt lt Alt gt on the keyboard and Keypad lt Alt gt lt Alt gt 114 5 KEYBOARD COMMANDS 5 2 14 Screen Capture lt PrintScreen gt The lt PrintScreen gt key captures the entire monitor display to the Windows Clipboard where it is available for use in other applications such as word processors Windows Paint Some older keyboards require lt Alt PrintScreen gt or lt Shift PrintScreen gt A typical usage would be to set up the display as desired for the snapshot you might wish to use Display Preferences Spectrum Colors to select black or white for all areas rather than colors since they produce clearer printouts then press lt PrintScreen gt Start the desired graphics or word processing application Copy the image from the Clipboard with lt Ctrl V gt or Edit Paste refer to the documentation for the graphics or word processing program See the Inbit FullShot manual for other screen capture and screen prin
34. only for the 122 keV and 662 keV peaks Compare with the example for MARK PEAKS As usual the loop count value can be included in any text by typing three question marks 27 in the text where the loop count is to be inserted The loop count replaces wherever it appears REM Text This line is a comment remark and is ignored during command processing The REM command allows entering descriptive comments into script files or disabling commands during testing of scripts REPORT filename This command produces a list of areas activities and peak shapes for all the ROIs marked in the spectrum See File ROI Report Section 4 1 7 for more information on the report format and contents The ROI data is presented in either columns or paragraphs according to the format most recently selected in the ROI Report dialog therefore you can choose a format before executing the JOB file If you do not specify a filename the report will be sent to the default Windows printer for this PC If you specify a filename the report will be sent to an ASCII text file that can be used by other programs or printed later The loop count value can be included in the filename by typing three question marks in the text where the loop count is to be inserted The loop count replaces in the filename The filename can include any of the variables defined in Section 6 3 RUN program This command executes an application named program
35. particular control is being adjusted the model is updated to represent the changes made The Rise Time value is for both the rise and fall times thus changing the rise time has the effect of spreading or narrowing the quasi trapezoid symmetrically The Flattop controls adjust the top of the quasi trapezoid The Width adjusts the extent of the flattop from 0 3 to 2 4 us The Tilt adjustment varies the flatness of this section slightly The Tilt can be positive or negative Choosing a positive value results in a flattop that slopes downward choosing a negative value gives an upward slope Alternatively the optimize feature on the Amplifier tab can set the tilt value automatically This automatic value is normally the best for resolution but it can be changed on this dialog and in the InSight mode to accommodate particular throughput resolution tradeoffs The optimize feature also automatically adjusts the pole zero setting The dead time per pulse is 3 x Rise Time 2 x Flattop Width In the Pole Zero section the Start button performs a pole zero at the specified rise time and other shaping values Unlike the optimize feature it performs a pole zero for only the one rise time The pole zero Stop button aborts the pole zero and is normally not used 62 3 MENU COMMANDS When you are satisfied with the settings Close the Properties dialog and prepare to acquire data Once data acquisition is underway the advanced user migh
36. portion of the starting spectrum that exceeds the Compare o spectrum is indicated by color 4 These colors called Foreground 2 Compare ROI and Composite respectively are chosen on the Color Preferences dialog discussed in Section 4 6 11 2 1 09 Press lt Esc gt to leave Compare mode Fig 42 Spectrum Colors in Compare Mode 41 MAESTRO 32 V6 A65 B32 4 1 9 Exit This exits MAESTRO and returns to Windows If the buffer contains a spectrum that has not been saved a warning message is displayed Any JOBs are terminated All MCBs continue acquisition 4 1 10 About MAESTRO Figure 43 shows the About box for MAESTRO It provides software version information that will be useful should you need customer support MAESTRO for Windows Model 465 B32 Version 6 04 UMCBI Kernel Version 6 04 Connections 32 Version 6 04 MAESTRO provides advanced Multi Channel Analyzer capabilities and supports DSPEC ADCAM series and SPECTRUM MASTER hardware DSPEC ADCAM and SPECTRUM MASTER are trademarks of Advanced Measurement Technology Inc This product is licensed to Preferred Customer ORTEC Copyright 2004 Advanced Measurement Technology Inc All Rights Reserved Fig 43 About MAESTRO If you are connected to the Internet click on the Visit ORTEC On Line button to browse our website which in addition to our product catalog includes application notes technical papers information on train
37. ral Paes 4907 sden JIA II III I I 7 A aaron 4 t y t ES E o omdr 1 a a x a e EN i d s ure6 auy ases 9u gt uj wooz E E days ure6 au ases 9aq 3NO wooz E mon E jenuewyajessoyny x I yO puuey gt 3sayBiy 03 dunp puz low MEA 49SUI 19pIM 84 J9NEL94 xiewun 0 puueyo o dunf awoH IOJ 18319 ajajaq JSMOJEN ZA 19110YS G4 ON ME Zi J94ng 0 Ado SON 12919 MIA IMJ 24 UV dois Hels u 1s 9 1 puueyo Jamoj 0 dunf ugbd u usa19s 91 1 jpuueyo JayBiy 03 dunr dnbd U 10393390 39919S ZL 03 1 4 119 S UV ety Z L 3W Fig 105 MAESTRO Keyboard and Keypad Accelerators 111 MAESTRO 32 V6 A65 B32 If the horizontal scale is expanded when the marker reaches the edge of the spectrum window the next key press past the edge shifts the window to the next block of channels in that direction such that the marker is now in the center of the display When the ROI mode is set to Mark the lt gt lt gt keys cause the channels to be marked as the marker moves Similarly they clear the ROI bits while the ROI mode is UnMark see Section 4 5 5 2 2 Next ROI lt Shift gt lt Shift gt The lt Shift gt gt or lt Shift gt move the marker to the beginning of the next higher channel ROI or the end of the preceding ROI respectively of the displayed spectrum These functions are dupli
38. rejection circuits BaseLineR This shows when the baseline restorer is actively restoring the baseline 77 MAESTRO 32 V6 A65 B32 PosBLDisc This shows when the positive baseline discriminator has been triggered The signal is used internally in the live time correction baseline restoration and pile up rejection circuits Busy When the busy signal is active Busy shows in the Mark box It represents the dead time Gate This shows when the gate signal is present on the gate input connector If the Gate mode on the ADC tab see Fig 67 is set to Off then all regions are marked If the mode is set to Coincidence then the marked region must overlap the pulse peak that is must start before the beginning of the flattop and stop after the end of the flattop for the pulse to be counted If the mode is set to Anticoincidence then the marked region will show the pulses that are accepted That is the rejected peaks will not be marked Simply put in all modes the accepted peaks are marked Peak This is the peak detect pulse It indicates when the peak detect circuit has detected a valid pulse The Mark occurs about 1 5 us after the pulse maximum on the display On the lower right of the InSight display are the shaping parameter controls The controls are split into two groups and the other controls button switches between them Not all DSP MCBs support all of the controls One group includes Rise Time Flattop Tilt and the Opt
39. remaining This is an estimate of the time remaining when using the internal battery and the digiDART operating in the present mode Presets Figure 64 shows the Presets tab MDA presets are shown on a separate tab Amplifier Ampifier2 ADC Stabilizer HighVoltage Field Data About Status Presets MDA Preset Nuclide Report The presets can only be set on an i 7 Uncertainty MCB that is not acquiring data Real Time during acquisition the preset field live tte A ive Time backgrounds are gray indicating that Start Chan 0 they are inactive You can use any ROI Peak width or all of the presets at one time To Ro inegal disable a preset enter a value of zero If you disable all of the presets data acquisition will continue until manually stopped Suggest Region Overflow Fig 64 digiDART Presets Tab When more than one preset is enabled set to a non zero value the first condition met during the acquisition causes the MCB to stop This can be useful when you are analyzing samples of widely varying activity and do not know the general activity before counting For example the Live Time preset can be set so that sufficient counts can be obtained for proper calculation of the activity in the sample with the least activity But if the sample contains a large amount of this or another nuclide the dead time could be high resulting in a long counting time for the sample If you set the ROI Pe
40. returns to the high level again before proceeding 130 6 JOB FILES Note that if the sample changer controls are not able to make the SAMPLE READY input go high very soon after the CHANGE SAMPLE signal is set 1 e the normal state of the SAMPLE READY is low it is expected to go high immediately after the CHANGE SAMPLE condition is set and remain high while the sample changer is moving and returns to low when the sample changer is at its new position it might be necessary to use the SEND MESSAGE command to send a SET OUTPUT HIGH command then pause with WAIT or some other time consuming command and then send the CHANGE SAMPLE command The following example demonstrates this SET DETECTOR 1 LOOP 5 CLEAR START WAIT FILL BUFFER SEND MESSAGE SET OUTPUT HIGH SET Detector 0 SAVE MONTE CHN SET DETECTOR 1 CHANGE SAMPLE END_LOOP CLEAR This command clears erases the spectral data real time and live time for the selected Detector The presets are not changed This command has the same function as the Clear function under the Acquire menu The command would logically be preceded by the SET DETECTOR commands as follows SET DETECTOR 1 CLEAR DESCRIBE_SAMPLE description This command accepts a 63 character description of the sample being analyzed This description is saved with the spectrum using the SAVE command function and is included in the REPORT printout This performs the same function as the Sa
41. standard file recall dialog box opens Once the desired spectrum file is selected the Expanded Spectrum View shows both spectra as illustrated in Fig 41 Note that the spectra in this illustration are displayed in Fill All mode in which all of the area under the peaks is filled with a color different from the background see Display Preferences Fill All Section 4 6 11 1 The Compare spectrum is offset from the starting spectrum and can be moved up and down incrementally with the lt Shift t gt and lt Shift gt accelerators In addition the vertical scale of both spectra can be simultaneously changed with lt 1 gt lt gt Note that the Compare spectrum s ROIs if any were saved with the file are not marked in this mode 40 3 MENU COMMANDS Maestro 003 RMK236 5 19 Jan 01 8 17 02 AM Spc File Acquire Calculate Services ROI Display G oD 124 Cros Jus a 0 elelefia ewe dl m Pulse Ht Analysis 5 Start 10 37 33 4M 6 7 91 Real 4219 80 Live 3 600 00 Dead 1469 e tal Library ag DRTEC 8 17 10 AM Mon 22 Jan 01 Marker 1 311 1 311 00 keV 2 406 Cnts COMPARE Shift Up or Shift Down changes offset ESC cancels Fig 41 Compare Mode Screen Figure 42 is a zoomed in portion of Fig 41 In this illustration the starting spectrum is displayed in color 1 the Compare spectrum is shown in color 2 the starting spectrum s ROIs are marked in color 3 and the
42. the FILE JOB argument is included A 2 Programs MCA32 EXE is the main program for the MAESTRO application MCBCON32 EXE is the Detector configuration program for the local PC and the entire network It only needs to be run manually if MCBs have been added to the network configuration since MAESTRO was installed All machines to be included in a network configuration should have MCBSER32 running see the MCB Properties manual MCBSER32 EXE is the communications link between the network and the local Detectors To use MAESTRO to access Detectors attached to a PC elsewhere on your network make sure MCBSER32 is running on that remote PC see the MCB Properties manual 158 APPENDIX B FILE FORMATS This appendix describes the file structure for the MAESTRO program files See the ORTEC Software File Structures Manual for DOS and Windows Systems for complete descriptions of the formats for these files including SPC and cHN files Section B 2 includes two program examples that show how to access the spectrum files B 1 1 CFG CXT B 1 2 CHN SPC ROI B 1 3 LIB RPT TXT JOB B 1 MAESTRO File Types Detector Files ConFiGuration System Detector configuration information used by MCA32 EXE binary format ConteXT For each Detector Device a context file is automatically created to remember all extra information required for analyses calibration and other calcula
43. the Detector List Editor dialog Services Edit Detector List If the pick list name specified by pick does not exist then one is created This new list will contain all available detectors included in the Master Detector List If the pick list already exists only the detectors defined in that list are displayed in the Detector droplist on the Toolbar Changes made to the pick list with the Edit Detector List command are stored with the active pick list filename Therefore to create multiple pick lists use the P option with the pick list name and then edit the list to contain only the desired Detectors The contents of the list can be overridden with 157 MAESTRO 32 V6 A65 B32 the Edit Detector list function The new list will be stored for use the next time this instance of MAESTRO is run L file lib Pre loads the nuclide library file 1ib instead of the default library LIB 1ib This can include a path specification which will override the library path specified on the Directories tab under File Settings see Section 4 1 1 4 file job Begins execution of the job file job immediately B Starts up with an open buffer window rather than searching for a valid Detector Certain defaults apply if any one or more of these arguments is omitted The initial Detector list is named M32McA CFG The nuclide library is assumed to be LIB lib by default or the last library used And no JOB is automatically executed unless
44. the ERR is set until cleared by the program The numeric values are displayed in the units reported by the digiDART Security Detector temperature and Live detector temperature are available only for SMART 1 detectors For non SMART 1 detectors they respond with N A The parameters are Detector State of Health This is OK if all the SOH are OK and ERR if any one is ERR DIM 24V State of Health This is OK if the 24 volt supply in the DIM has stayed within 200 mV of 24 volts since the last time the SOH was cleared DIM 12V State of Health This is OK if the 12 volt supply in the DIM has stayed within 200 mV of 12 volts since the last time the SOH was cleared DIM 12V State of Health This is OK if the 12 volt supply in the DIM has stayed within 200 mV of 12 volts since the last time the SOH was cleared DIM 24V State of Health This is OK if the 24 volt supply in the DIM has stayed within 200 mV of 24 volts since the last time the SOH was cleared Temperature State of Health This is OK if the detector temperature has stayed below the high temperature limit set in the detector since the last time the SOH was cleared This is available only for SMART 1 detectors High Voltage State of Health This is OK if the HV supply in the DIM has stayed within 200 V of specified bias voltage since the last time the SOH was cleared Shutdown State of Health This is OK if the detector shutdown has not activated since the last time th
45. the appropriate header To edit a peak either double click on the peak in the right hand list or click once on it then click on the Edit button This will open the Edit Library Peak dialog Fig 124 The Energy keV Gammas per 100 Disintegrations Photon Flags and Peak Flags will already be listed The Photon Flags and Peak Flags are not used in Edit Library Peak 2 x MAESTRO The Photon Flags are used to show the Rascal Noia CATA origin of the peak Only one can be selected at a time Eneray keV FEE amma Ray G and X Ray X mean the peak ener G y y P 8y Gammas per 100 Disintegrations 2 61 00 is due to a nuclear or atomic transition respectively Positron Decay P is used for the 51 1 keV peak PR sa das 6 Single Escape S peaks are peaks for which a single oo K 511 keV photon has escaped the detector This can only C Positron Decay P occur for full energy peaks above 1 022 MeV Double Single Escape 5 Escape D peaks are peaks for which two 511 keV Double E scape DI photons have escaped the detector Both single and Peak Flags double escape peaks are broader than gamma ray peaks Key Line IK Not In Average 8 Neither can be used for activity calculations because the intensity of the peak is not related directly to the intensity of the full energy peak Nonetheless these can _Cancel be included in the library to account for the peak in the Fig 124 Edit or Manually Add spectrum
46. the entry is underlined no other program or PC on the network can modify this value 45 MAESTRO 32 V6 A65 B32 If the Detector is locked see Section 4 4 4 you must know the password before you can modify its MCB properties To view a locked Detector s properties in read only mode click on Cancel when the Unlock Password dialog opens 4 2 7 1 DSPEC Pro Amplifier Figure 46 shows the Amplifier tab This tab contains the controls for Gain Baseline Restore Preamplifier Type Input Polarity and Optimize NOTE Be sure that all of the controls on the tabs have been set before clicking the Start Auto optimize button The changes you make on most property tabs take place immediately There is no cancel or undo for these dialogs Gain Set the amplifier coarse gain by x selecting from the Coarse droplist High Voltage About Status Presets MDA Preset then adjust the Fine gain with the Amplifier Ampliier2 AmplifierPRO ADC Stabilizer horizontal slider bar or the edit box PRO POI i a uan 1 00 baselmne hestore y pp Ypumize in the range of 0 45 to 1 00 The 0 45 10 fe sl Start Auto resulting effective gain is shown at Se oe ee CORO ul a al x top Auto the top of the Gain section The p Preamplifier Type Fine 0 5000 7 pS a two controls used together cover Resistor Feedback y p Input Polarity the entire range of amplification Coarse RE we CO from 0 45
47. the pole zero function for the detector Note that the pole zero function is not complete when this is used The pole zero function should be allowed to complete automatically Not supported on all MCBs STRIP lt factor gt file chn This command strips the disk spectrum specified in the SET NAME STRIP command or in the command itself either way is acceptable the filename is optional in this command from the spectrum in the buffer and stores the results in the buffer The disk and buffer spectra must be the same size The disk spectrum can be scaled up or down by lt factor gt a constant or if lt factor gt is zero by the ratio of the live times of the two spectra UNLOCK Pwd Unlocks the current Detector using Pwd as the password VIEW i This command moves the 6699 1 th stored spectrum to position 0 140 6 JOB FILES WAIT lt seconds gt This command suspends execution of the JOB until either the active Detector stops counting in the case where the lt seconds gt argument is not included or for a fixed number of seconds which can be fractional NOTE The wait for end of acquisition form of the command i e no argument will suspend the JOB indefinitely if there are no preset conditions that can be satisfied 1 e if acquisition proceeds indefinitely WAIT program This command suspends execution of the JOB until the named program stops execution If the program
48. the rise time for better resolution for expected lower count rates or when unusually high count rates are anticipated reduce the rise time for higher throughput with somewhat worse resolution ZLE The many choices of Rise Time allow you to precisely control the tradeoff between resolution and throughput The value of the rise time parameter in the DSPEC Pro is roughly equivalent to twice the integration time set on a Use the up down arrows to adjust the Rise Time within the range of 0 8 to 23 0 us After all the controls have been adjusted return to the Amplifier tab and click on Start Auto The most recent settings are saved in the DSPEC Pro firmware even when the power is turned off For the more advanced user the InSight mode allows you to directly view all the parameters and adjust them interactively while collecting live data To access the InSight mode go to the Insight section on the Amplifier 2 tab and click on Start The InSight mode is discussed in more detail in the following section Note that the Amplifier 2 tab graphically presents a modeled shape This is not a sampled waveform of the actual pulse shape only a model based on the current parameters The modeled 48 3 MENU COMMANDS shape is nominally a quasi trapezoid whose sides and top may be adjusted by the controls in this dialog While a particular control is being adjusted the model is updated to represent the changes m
49. two spectra Use lt F3 gt or Acquire ZDT Display Select to toggle the display between the two spectra In the Compare mode lt F3 gt switches both spectra to the other type and lt Shift F3 gt switches only the compare spectrum This allows you to make all types of comparisons Conversion Gain The Conversion Gain sets the maximum channel number in the spectrum If set to 16384 the energy scale will be divided into 16384 channels The conversion gain is entered in powers of 2 e g 8192 4096 2048 The up down arrow buttons step through the valid settings for the DSPEC Pro Upper and Lower Level Discriminators In the DSPEC Pro the lower and upper level discriminators are under computer control The Lower Level Discriminator sets the level of the lowest amplitude pulse that will be stored This level establishes a lower level cutoff by channel number for ADC conversions The Upper Level Discriminator sets the level of the highest amplitude pulse that will be stored This level establishes an upper level cutoff by channel number for storage Stabilizer The DSPEC Pro has both a gain stabilizer and a zero stabilizer see Sections 4 2 7 4 and 4 2 7 5 The Stabilizer tab Fig 50 shows the current values for the stabilizers The value in 52 each Adjustment section shows how much adjustment is currently applied The Initialize buttons set the adjust ment to 0 If the value approaches 90 or above the amplifier gain should
50. with the same name as another file that already exists you are prompted for confirmation of the operation by this warning See also OK To Overwrite Existing File File is wrong size Can t STRIP The STRIP function requires a compatible file for stripping from the spectrum in memory i e must contain the same number of channels File not found The requested file could not be found This is Windows Error 2 Fine gain is at limit of This message appears in the Marker Information Line when an attempt is made to change the gain setting in some MCBs e g 92X with the keyboard function but gain cannot be decreased or increased any further Firmware communication failure Firmware reported error The MCB firmware did not respond or responded with an error See hardware manual for meaning of message Hardware failure This message appears as the result of an Detector execution error with microcode 137 indicating a hardware failure See hardware manual for more details High voltage not enabled START was attempted on a MCB while the high voltage was not enabled Illegal Detector The Detector number for the requested function was not identifiable as part of the active configuration 168 APPENDIX C ERROR MESSAGES Illegal entry The input to a dialog box is not correct Incorrect Windows version The version of Windows does not support this program use a later version of Windows Insufficient memory for
51. 3 Cnts No ROI found using single channel calibration point Entering Calibration for point number 1 5 After the second peak value is entered Fig 73 Calibration with No ROI the program will ask for up to four characters for the units see Fig 74 The system is now calibrated and the marker location is shown in both channels and the input units You might continue to add peaks up to 96 for a better quadratic fit to the data The fit is automatically redone after each point is entered Calibration Units 21x Cancel Fig 74 Calibration Units Inputs 4 3 3 Peak Search This function initiates a Mariscotti type peak search on the spectrum in the Detector when the Detector is not collecting data or the buffer The peak search sensitivity is selected in the Settings item of this menu Each peak found is marked as an ROI If the system is calibrated the width of the ROI is three times the calculated FWHM of the peak If not calibrated the width of the ROI is based on the width of the peak as determined by the peak search Overlapping or close peaks might have contiguous ROIs Existing ROIs are not cleared The ROI Report command see Section 4 1 7 can be used with this function to produce a semi quantitative nuclide list for the spectrum M A Mariscotti A Method for Automatic Identification of Peaks in the Presence of Background and its Application to Spectrum Analysis Nuclear Instruments and Met
52. 4 5 ROI An ROI region of interest is a way to denote channels or groups of channels in the spectrum as having special meaning An ROI can be used to mark peak areas for the printout or to mark a peak to stop acquisition when that peak reaches a preset value Channels marked as ROI channels are displayed in a different color than the unmarked channels The ROI menu is shown in Fig 91 Its functions are available in Rol both buffer and Detector windows See Section 3 5 3 for ROI e Off F2 or Alt O operations performed with the mouse Mark F2 or Alt M Unbark F2 or Alt U 4 5 1 Off Mark Peak Insert Cl Delet This sets the ROI status to Off In this state the ROI bit for the ai All a channels will not change as the cursor moves This function is duplicated by lt Alt O gt and by lt F2 gt which toggles between Off lo Mark and UnMark Recall File Fig 91 ROI Menu The usual ROI status is Off so the marker can be moved on the display without changing any of the ROI bits 96 3 MENU COMMANDS 4 5 2 Mark This sets the ROI status to the Mark or set condition In this state the cursor channels are marked with the ROI bit as the cursor is moved with lt gt or lt gt into the channel Moving the marker with the mouse does not change the ROI in this mode This function is duplicated lt Alt M gt and by lt F2 gt which toggles between Off Mark and UnMark ROIs can also be marked with th
53. 5 Stabilizer AN Re a AA e ek A 78 74510 SR a O Oe 80 Start acquisition 18 43 105 State of health SOH 54 66 Stalus sidehaf oi alli ieri 16 Stop acquisition 18 43 105 Oi De tiers alte oa noe ace OCRA TRENO ICT 90 O as ee wee eek ee 90 107 Supplementary Information Line 16 Throughput ck ed 48 49 77 78 Time constant piro pre nts 46 Tle Bar tile A 13 A A A 14 Transistor RES ea oh 47 TRANSLT program odios 155 command line eg hoch we tere aes ia 155 Uncertainty preset ihre ia 58 Unido Z00M Ty siriana 106 Vertical Auto Scale 18 100 Vertical scale is 16 113 114 InSight mode soft tua ncn ek ex ws 76 A Liri 18 100 JN 18 100 WINPEOTS Siria learn 143 ZDT Modes Ipo tea anes ah E 81 View ZDT spectrum ceci 44 zero dead time see ZDT mode 52 Zero stabilization 52 80 NGAI inode onset aig tos eam a a aes 53 IL a rotolare 21 AOO Ns s r Sheena Deis e OEN 17 19 100 Zoom Out as 17 19 100 106 178
54. 78 Full Spectrum View 15 16 sizing and moving ilaria 22 ENI Mei ele 84 87 FWHM A e e e 86 87 Gain A E a eee ae ia 114 Gain stabilization o oooooooo o o 52 A ea Saas heats 53 Gain Stabilizer scroller eo 78 RA era ez Sinai 51 78 High voltage A aa 53 Horizontal Scale ili 117 Cere 19 InSight mode AAA voi A dle 19 Zoom A A E 19 Import A A Moa eth 31 Mile e E 31 O IE RSA RAR GRES ORI ton ence at eons 31 spectrum file ie fe orient oes 36 Indexing buttons 22 EB Sse cubes we ea See 22 112 PBA ce e facture A E NEO 22 112 RO A har ere 23 112 InSight modes loci hee se Seed ek 48 49 78 176 Mb erhalten 11 Mark types sss Oe re os eR ee ere 77 Integration AAA A 48 Job commands detailed reference 129 commands quick reference 121 CONTON cts he tetany data ded 91 NN 92 example A en eT ee eRe 126 dala 119 file variables Au aes Pits aan 125 loop counter 22 ow sa wen aera aes 128 programming tria 126 O 91 Keyboard COM id 109 Maps ee eee eee reer ee genera 111 quick TEC isti neers ae Gus 110 Library SU Ded sen ors ee te utes oe 153 load library file 93 132 Mabel delia lata 149 MENU a dante ok Seer ey ae ee 148 mnelide HagS orobica 151 Olbia er ra 149 photon flags AAA nananana 153 Pisistrato 154 show peaks pio 93 Works het kk Miura ok dee ei ta oe eae apy 149 e cen tae Sahat pests eee sae aed 18 Eee 57 A A A 76 Logarithmic scale uc 18 Low Frequency Rej
55. 9 Fig 88 Password for Accessing Locked Detector If you enter the incorrect password in either the Unlock or Locked Detector dialog the dialog will reopen and wait for the correct password If you do not know the password click on Cancel to close the dialog you will still have read only access Marker 1 452 670 83 keV Detector Locked by Fred Bloggs Fig 89 Name of Person Who Locked Detector 4 4 5 Edit Detector List ocked Detector This function allows you to select the Detectors that will be available to MAESTRO on this PC Other applications e g ScintiVision 32 AlphaVision 32 GammaVision on the same PC can have their own lists In this way the different Detectors on the network can be segregated by function or type NOTE When you invoke this command all Detector windows close without warning all buffer windows close with a warning and a buffer window opens The buffer window remains open after you have closed the Detector List Editor dialog Figure 90 shows the Detector List Editor dialog On the left is the Master Detector List of all Detectors on the system This master list is created by the MCB Configuration program which is discussed in detail in the MCB Properties manual and is the same for all ORTEC programs e g MAESTRO GammaVision ScintiVision running on all PCs connected to the workgroup The default description for each instrument is derived from the hardware and can be changed within th
56. Amplifier2 ADC Stabilizer Highvoltage Field Data About Status Presets MDA Preset Nuclide Report Move Spectra A Move 9 Stored Spectra 123657 Fig 61 The digiDART Field Mode Spectrum Tab lower right The spectrum ID is the eight character alphanumeric value stored with the spectrum The stored spectra cannot be viewed or stored in the PC until they are moved to the active spectrum position To move a spectrum from the stored memory to the active memory enter the spectrum number and click on Move Use the up down arrow buttons to scroll through the list of spectra The label 65 MAESTRO 32 V6 A65 B32 on the lower right does not update until a spectrum is moved The numbers are the same as the numbers shown on the digiDART display in the stored spectrum list Note that this only moves the spectrum inside the digiDART To save the current active spectrum to the PC disk use the File Save commands in the application The Acquire Download Spectra command can also be used to download all the stored spectra and save them to disk automatically They can then be viewed in a buffer window About This tab Fig 62 displays hardware and firmware information about the currently selected digiDART as well as the data Acquisition Start Time and Sample description In addition the Access field shows whether the MCB is currently locked with a password see Section 4 4 4 Read Write indicates t
57. CCESS DIRECT RECL 32 C Read the first 32 bytes first record from the file READ 1 REC 1 TYPE MCA SEG SRTSEC RLTIME LVETME 1 SRTDTE SRTTME STRTCH LNGTDT C Check to see if the first word is a numeric 1 if not C then quit IF TYPE NE 1 GO TO 1000 C It s good so write out all the data from the header C note that the start time is split into two parts WRITE 0 150 TYPE MCA SEG RLTIME 50 1 LVETME 50 SRTTME SRTSEC SRTDTE STRTCH LNGTDT 150 FORMAT TYPE 14 MCA 12 SEGMENT 1 13 REALTIME 1I10 SECONDS LIVETIME 2 110 SECONDS DATA COLLECTED AT 2A41 2A1 3 2A1 ON 2A1 3A1 2A1 4 STARTING CHANNEL 1I6 NUMBER OF CHANNELS 5 16 C The first trailer record is after the last channel data C Divide the length by 8 because there are 8 channels per C record LREC 3 CHNLEN 1 8 Read the first trailer record TLRTYP is the record type The variables IS and X1 are dummys maintain the position in the file READ LUN REC LREC ERR 100 TLRTYP IS ENG 1 ENG 2 1 X1 FW 1 FW 2 WRITE 0 160 ENG FW 160 FORMAT ENERGY ZERO 1 E14 8 FWHM ZERO aan E14 8 ENERGY SLOPE E14 8 FWHM SLOPE E14 8 160 APPENDIX B FILE FORMATS C Ask the user for the channel number to print out WRITE 0 200 200 FORMAT Enter channel number C Get the channel number READ 0 210 I CHNNL 210 FOR
58. F6 gt or lt gt lt F7 gt or lt gt lt F8 gt or lt gt lt Alt F7 gt Keypad lt gt Keypad lt gt Keypad lt 5 gt Keypad lt gt Keypad lt gt Insert lt Ins gt Delete lt Deb gt lt Shift 1 gt lt Shift gt lt Alt 1 gt lt Alt 2 gt lt Alt 3 gt lt Alt gt lt Alt 6 gt or lt F4 gt lt Alt gt lt Shift Alt gt lt Alt gt lt Shift Alt gt lt PrintScreen gt Function Change vertical scale so spectrum peaks are smaller Change vertical scale so spectrum peaks are larger Move marker to higher channel Move marker to lower channel Narrow the horizontal scale Widen the horizontal scale Jump to next higher peak Jump to next lower peak Jump to next higher ROI Jump to next lower ROL Jump to next library entry Jump to previous library entry Jump to higher channel number in 1 16th screen width increments Jump to lower channel number in 1 16th screen width increments Jump to first channel of the full spectrum Jump to last channel of the full spectrum Select Detector i i 1 to 12 in pick list order Switch ROI bit control from OFF to SET to CLEAR In MCBs that support ZDT mode switch between the two spectra stored in ZDT mode In MCBs that support ZDT mode switch the disk spectrum to compare normal to disk ZDT spectrum or ZDT spectrum to disk normal spectrum Switch between displaying selected Detector and buffer Change
59. F7 gt Full View adjusts the horizontal and vertical scaling to display the entire spectrum in the Expanded Spectrum View This duplicates Display Full View see Section 4 6 9 5 4 8 Select Detector lt Ctrl F1 gt through lt Ctrl F12 gt These keys open a new window and display the spectrum for the specified Detector n where n 1 to 12 corresponding to lt Ctrl Fn gt in the order that the Detectors are defined in the Detector pick list see Section 4 6 1 The selected Detector name or the buffer is shown on the Toolbar These keys duplicate the function of the Detector pick list on the Toolbar and the Detector dialog under the Display menu However you should be aware of which Detector numbers are available when using the function keys An error message box will appear if the selected Detector is invalid In systems with more than 12 Detectors use Display Detector or the Detector droplist on the Toolbar 5 5 Keypad Keys 5 5 1 Log Linear Keypad lt gt Keypad lt gt toggles the active spectrum window between logarithmic and linear vertical display This is duplicated by the Log Toolbar button The vertical scale can be controlled with the Zoom In Zoom Out Toolbar buttons Keypad lt gt lt gt the lt 1 gt and lt gt keys and lt F7 F8 gt 117 MAESTRO 32 V6 A65 B32 5 5 2 Auto Manual Keypad lt gt Keypad lt gt switches the spectrum window between automatic and manual vertical full scale
60. I couldn t obtain such probably because there was no ROI at the point specified or mightbe because there weren t statistically significant counts above background Default Printer Failure The REPORT or PRINT function was aborted because the default system printer has not been properly setup Go to Windows Control Panel Printers install the appropriate printer and select it as outlined in the Microsoft Windows documentation Detector Error Macro Micro An unresolved error originating in the Detector The offending Detector command is shown together with the macro and micro error codes If the error persists the error codes should be recorded and the factory should be contacted Detector busy with other tasks not responding This indicates the Detector was unable to respond within a certain time limit due to other activities such as multiple instances of MAESTRO accessing the Detector at the same time or otherwise heavy use of the Detector interface Detector does not support Field Mode Job Error 19 An attempt was made to execute the LOOP_SPECTRA or VIEW command on a Detector that does not support Field Mode 166 APPENDIX C ERROR MESSAGES Detector Error The selected Detector could not be STARTed or STOPped due to some unresolved error condition Disk network or firmware I O error An I O error was detected Detector locked by An attempt to modify the contents of a locked Detector wa
61. LO A ei 106 OU at de Ah 107 Undo Zoom Mi ile 106 INDEX ZO O T os acoso ee ROY ot ee 106 Ris TIME lara 47 49 78 ROL da T S 23 86 112 Clear po eck oases 18 97 106 113 Clear All eenean ton desde 98 Made sche a s bs E 18 97 106 113 M rk Peak a a N ea 97 A A 96 REGAN Filen dsc A ene ww 98 TSONGA o Nae fics Guero eats ise are 37 Save Mile cosparsa ete ea eee ees 98 A RE ERI 15 116 MARC A eae A 97 ROME scorrerie 96 ROS is 15 116 Rubber rectangle 20 106 Save is here Bacco eee 154 ROP MC orsce uate dace Desh lea 98 spectrum saves tata cowie eee ews 34 36 Scaling auroscale elas tial toned aah ita 18 100 incassata rara 18 100 logarithmic AA E 18 100 Screen Capture 6045 cel ww dd vee aio 115 SUI SILE INFOR SPERARE POVERI PORTER RIOT ae 3 Settings CAIN AIS ovine dears toot ae ee eee 84 Pilosio iero Ee wae woe Doll A r E e E N OEE du SMART detector le is 55 shutdown mode 65 state of health status 66 SMOOTH croata 90 SPC file A anaana nanena 28 MECE gh e a RE ATE SE ST 28 SPE format area bees 35 Spectrum A E E E E 18 copy to baffetti 18 how to read data files 159 recall a a o dea watt ners 17 Renania 18 MAESTRO 32 V6 A65 B32 start acquisition gt Sibari 18 stop acquisition 18 Spectrum area Met hie oo hs ea ere ak hes 14 Spectrum translation 15
62. MAT 15 C Calculate the block of 8 channels that this one is in C There are 8 channels in a record of 32 bytes CHANEL I CHNNL 1 ENDREC CHANEL 8 BEGREC CHANEL 8 This is only one record in this example but could be any number of records The 2 is the offset past the header and the records start at 1 So the first data record is 2 DO 450 I BEGREC 2 ENDREC 2 C Read the 8 channels READ 1 REC I SPCIN K K 1 8 C Print the 8 channels along with the channel number of C the first channel WRITE 0 410 1 8 I 2 SPCIN K K 1 8 anA 410 FORMAT 1X 15 819 450 CONTINUE CLOSE 1 1000 STOP END B 2 1 2 ROI Files INTEGER 2 LUNROI LSTREC IBEGIN IEND C WRITE 0 100 100 FORMAT 29X ROI PRINT ROUTINE C Open the ROI file OPEN 1 FILE STATUS OLD ACCESS DIRECT RECL 2 C Read the ROIs I 0 IROI 1 C Add 2 to skip past the header 200 READ 1 REC I 2 IBEGIN C If the entry is 0 then this is the end of the list IF IBEGIN LE 0 GO TO 1000 C If the beginning is there then the end is also READ 1 REC I 3 IEND C But its one too many IEND IEND 1 C Write them all out 161 MAESTRO 32 V6 A65 B32 WRITE 0 220 IROI IBEGIN IEND 220 FORMAT ROI 13 START I6 STOP I6 C Add 2 to I to advance past the begin and end numbers I I 2 IROI IROI 1 C Keep going until we run out of numbers GO TO 200 1000 STOP END B 2 2 C Language RR k ke e ke e e ke de e ke de e de
63. ORTEC MAESTRO 32 MCA Emulator for Microsoft Windows 98 SE 2000 Pro and XP Pro A65 B32 Software User s Manual Software Version 6 0 Printed in U S A ORTEC Part No 777800 1004 Manual Revision K Advanced Measurement Technology Inc alk a ORTEC a subsidiary of AMETEK Inc WARRANTY ORTEC DISCLAIMS ALL WARRANTIES OF ANY KIND EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE NOT EXPRESSLY SET FORTH HEREIN IN NO EVENT WILL ORTEC BE LIABLE FOR INDIRECT INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING LOST PROFITS OR LOST SAVINGS EVEN IF ORTEC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES RESULTING FROM THE USE OF THESE DATA Copyright 2004 Advanced Measurement Technology Inc All rights reserved ORTEC is a registered trademark of Advanced Measurement Technology Inc All other trademarks used herein are the property of their respective owners l 2 3 4 TABLE OF CONTENTS INTRODUCTION sillabe ates gies a BOR Ga ae 1 let MEA SE MULAN ON dodo ween ae hues 1 t2 About This User Manual asse Ata Oeste E ea 2 1 3 PC Requirements lt a eas e Bae ive hans Sey Sod siete Beeps Set Ae tang Eo eee et 2 Lili Detectors aa OR 3 1 5 Detector SeGur ads a vesta beaten daldk ele a EEE bee 3 1 6 Enhancements to MAESTRO for Windows 4 1 6 1 MAES TRO 32 V6 04 vs VO under is ME dekin ane dret
64. Open M Show Description lt lt Unknown gt gt Format Channels The currently displayed spectrum must be saved to disk before it can be exported If Fig 32 The Export Spectrum File Dialog the currently displayed spectrum has already been stored to disk that filename is the default Any file can be selected The file is then read and the output file is written by the program The Export function is not available for a second file until the first file has been exported and the export program has stopped execution Export can also be used to generate hardcopy plots To do this select the WINPLOTS program supplied with MAESTRO as the export program When Export has been selected the WINPLOTS program will be executed If the P switch is specified on the command line see Sections 4 1 1 2 and 7 1 3 the program will plot the spectrum and exit automatically 35 MAESTRO 32 V6 A65 B32 4 1 5 Import The Import function is used to read spectrum files that are not in one of the usual formats 1 e CHN or SPC The import program is specified on the Import tab under File Settings as discussed in Section 4 1 1 3 The program can be one of the programs supplied or can be user supplied When selected the Import File dialog see Fig 33 opens so that you can select the filename The file is then read and a spectrum file is written to the Import File Look in a User y c E File name i O
65. Printer and or File To print an ROI Report leave both the Print to file and Print to display boxes unmarked Click on either the Paragraph or Column radio button to select an output format Make sure the correct printer is listed in the Printer Name field to select another printer click on the Name field and choose from the droplist Click on OK To write an ROI Report to an ASCII file follow the same steps but click on the Print to file box to mark it Then click on OK Report File RIA X E User Jaca Look in File name Files of type RPT Files y Cancel Fig 36 Report Filename Selection This will open the Report File dialog see Fig 36 Enter the desired File name and click on Open This file can then be viewed and printed from ASCII text handlers such as Windows Notepad Examples of the Paragraph and Column style reports are shown in Figs 38 and 37 respectively Detector 65537 ACQ 07 Jun 91 at 0 37 33 No detector description was entered 4219 8 LT 3600 0 Mixed gamma Marinelli on endcap of P40268A RANGE 332 57 12keV to 360 AREA Gross 224820 Net CENTROID 346 17 59 40kev SHAPE FWHM 0 93 No close library match RANGE 509 85 70kev to 537 AREA Gross 449680 Net CENTROID 522 55 87 89kev SHAPE FWHM 0 93 No close library match Fig 37 Paragraph Style ROI Report 38 FW 2M 1 45 FW 2M 1 44 61 64kev 123784 714 90 22k
66. R SEND MESSAGE SET GAIN FINE 2048 SEND MESSAGE SET GAIN COARSE 100 SET_BUFFER Selects the buffer same as SET DETECTOR 0 SET_DETECTOR lt number gt This selects the active Detector or the buffer The Detector number can be 1 to 999 according to the Detector configuration or 0 for the buffer Also SET DETECTOR without an argument is used to switch to the previously selected Detector If a Detector is selected that does not exist no change is made The Detector number is the number shown on the Toolbar and the Detector pick list The JOB processor expects one or more numerals as the argument to this command entered with or without quotation marks e g you can enter the numerals 1000 or the string 1000 The JOB processor will also accept the loop counter as an argument to the function as long as it is set in quotation marks For example you could use loop1 to sequence through the detector list provided the detector list is in numerical sequence This command for values 1 to 12 has the same function as lt Ctrl F1 gt through lt Ctrl F12 gt For value 0 or no argument at all it duplicates the Detector Buffer toggle under the Display menu lt F4 gt and lt Alt 6 gt See also the notes on SET DETECTOR and the new MAESTRO multi detector interface in Section 6 1 5 SET_NAME STRIP file chn This command can be used before STRIP to select a disk filename to be used subsequently by the STRIP command
67. ROI is shown on the display This is the same as the gross counts in the Peak Info display but can be used on wider ROIs 4 3 7 Smooth The Smooth command is available in buffer windows only It transforms the data in the buffer according to a five point area preserving binomial smoothing algorithm that is the existing data is replaced channel by channel with the averaged or smoothed data as follows _ O 40 _ 60 40 O S 6 i 16 6 where S the smoothed data in channel i O the original data in channel i 4 3 8 Strip This command Fig 78 strips the specified disk spectrum from the spectrum in the buffer and stores the result in the buffer Select a File name and Stripping Factor and click on OK NOTE Any valid spectral data file can be selected but it must contain the same number of channels as the buffer The strip factor is a real number that is multiplied channel by channel by the disk spectrum before being subtracted from the buffer If the Use Ratio of Live Times box is marked the strip factor is calculated as the ratio of the live time of the buffer spectrum divided by the live time of the disk spectrum Unmarking the Use Ratio box allows you to enter a factor which can be negative in which case the spectra are added 90 3 MENU COMMANDS Strip Spectrum File Look in a User c sce ISEE File name BH4275 Chn Files of type Integer CHN z Cancel Stripping Factor Fac
68. S a n Files of type Txt Files be Cancel specified directory MAESTRO attempts Fig 33 The Import File Dialog to read this file in CHN or SPC format and displays the spectrum in the buffer If the import program does not produce a file that MAESTRO can read the buffer is not changed 4 1 6 Print The Print function does one of the following Ifthe marker is in an ROI the data contents of the ROI channels are printed e Ifthe marker is not in an ROI the contents of channels in the expanded view are printed Use the Print dialog Fig 34 to print the output or save it in a disk file click on Print to file to mark it An abort box appears while the function is being performed allowing you to cancel the operation The printer can be selected or its properties changed via a standard Windows printer setup dialog The data are formatted at seven channels per line with the channel number on the left 36 Printer Name HP LaserJet 4 Status Ready Type HP LaserJet 4 Where Srad_printer hp4 Comment I Print to file OK Cancel Fig 34 Print Spectrum 3 MENU COMMANDS 4 1 7 ROI Report The ROI Report function creates a report describing acquisition conditions and contents of all ROIs and sends the complete report to the printer the default choice and or to a disk file Print to file In addition you can select Print to display to show on screen a similar re
69. SPEC Plus ORSIM II or III MatchMaker 9DSPEC 92X II 919E 920E 921E or other module that uses an Ethernet connection the network default protocol must be set to the IPX SPX Compatible Transport with NetBIOS selection on all PCs that use CONNECTIONS hardware For instructions on making this the default see the network protocol setup discussion in the MCB Properties Manual 8 To start the MCB Configuration program on your PC click on Start Programs MAESTRO 32 and MCB Configuration Alternatively you can go to c Program Files Common Files ORTEC Shared Umcbi and run MCBCON32 EXE The MCB Configuration program will locate all of the powered on ORTEC MCBs attached to the local PC and to powered on network PCs display the list of instruments found allow you to enter customized instrument numbers and descriptions and optionally write this configuration to those other network PCs as described in detail in the software installation MAESTRO 32 V6 A65 B32 chapter of the MCB Properties manual Jf this is the first time you have installed ORTEC software on your system be sure to refer to the MCB Properties manual for information on initial system configuration and customization MAESTRO 32 is now ready to use and its MCB pick list can be tailored to a specific list of instruments see Section 4 4 5 2 1 If You Have Windows XP Service Pack 2 and Wish to Share Your Local ORTEC MCBs Across a Network NOTE If you do not have instrum
70. The Uncertainty preset stops acquisition when the statistical or counting uncertainty of a user selected net peak reaches the value you have entered Enter the Preset in value as percent uncertainty at 1 sigma of the net peak area The range is from 99 to 0 1 in 0 1 steps You have complete control over the selected peak region The region must be at least 7 channels wide with 3 channels of background on each side of the peak As the uncertainty is calculated approximately every 30 seconds the uncertainty achieved for a high count rate sample might be better than the preset value Use the Start Channel and Width fields to enter the channel limits directly or click on Suggest Region If the marker is positioned in an ROI around the peak of interest Suggest Region reads the limits of the ROI with the marker and display those limits in the Start Chan and Width fields The ROI can be cleared after the preset is entered without affecting the uncertainty calculation If the marker is not positioned in an ROI the start channel is 1 5 times the FWHM below the marker channel and the width is 3 times the FWHM The net peak area and statistical uncertainty are calculated in the same manner as for the MAESTRO Peak Info command which is discussed in Section 4 3 4 Note that the Suggest Region button is not displayed during data acquisition Marking the Overflow checkbox terminates acquisition when data in any channel exceeds 2 1 over 2x 10 counts
71. The x factor is determined in Calculate Settings The peak information is displayed in a pop up box at the top of the peak Fig 75 This is duplicated by double clicking the mouse in the ROI or with Calculate Peak Info To close the box left click on it or press lt Ese gt If the Detector is acquiring data the values displayed are continuously updated with new values based on the new data See Section 4 3 4 for peak calculation details 4 8 11 Input Count Rate This enables the display upper left corner of spectrum of the input count rate meter for those MCBs that have one for instance the DSPEC Pro and digiDART The input count rate is the total count rate into the input and is higher than the total number of counts in the spectrum divided by the real time It is the count rate used in the dead time calculation 4 8 12 Sum The Sum function performs its calculation in one of two ways depending on the position of the marker e Ifthe marker is not in an ROI the sum of the data channels of the Detector is shown on the display The complete channel width e g 1 to 16384 is summed e Ifthe marker is in an ROI the sum of the data channels in the ROI is shown on the display This is the same as the gross counts in the Peak Info display but can be used on wider ROIs 4 8 13 MCB Properties This displays the MCB Properties as described in Section 4 2 7 for the selected Detector 107 MAESTRO 32 V6 A65 B32 108
72. When the spectrum is successfully recalled MAESTRO loads its descriptors e g start time live time Recall Spectrum File que E Look in File name 8H 4275 Chn Files of type Integer CHN Cancel M Show Description CHN Format NBS SRM 4275 24 5N 1141 MIXED CLB SOURCE 8192 Channels Fig 30 Recall Spectrum Dialog real time Detector and sample description and displays the filename on the Title Bar If the spectrum file has calibration information it is used to set the calibration for this buffer 4 1 3 Save and Save As These functions save the current spectrum to disk The Save Spectrum File dialog Fig 31 opens when Save As is selected when Save is selected for a spectrum that has no previous filename associated with it or after any operation is performed that can alter the spectrum Enter any valid filename consisting of an optional drive and directory a filename and an optional extension in the File name field and click on Save Save Spectrum File Save in Crt 8H4275 Chn BchSd92x Chn Save as type Integer CHN Cancel Fig 31 Save Spectrum File Dialog The recommended and default extension are shown in the dialog according to the format chosen If that file already exists a message box will open asking you to verify the entry or cancel the operation Clicking on OK will completely overwrite the existing file After the disk file has been written its
73. ade The Rise Time value is for both the rise and fall times thus changing the rise time has the effect of spreading or narrowing the quasi trapezoid symmetrically The Flattop controls adjust the top of the quasi trapezoid The Width adjusts the extent of the flattop from 0 3 to 2 4 us The Tilt adjustment varies the flatness of this section slightly The Tilt can be positive or negative Choosing a positive value results in a flattop that slopes downward choosing a negative value gives an upward slope Alternatively the optimize feature on the Amplifier tab can set the tilt value automatically This automatic value is normally the best for resolution but it can be changed on this dialog and in the InSight mode to accommodate particular throughput resolution tradeoffs The optimize feature also automatically adjusts the pole zero setting The dead time per pulse is 3 x Rise Time 2 x Flattop Width In the Pole Zero section the Start button performs a pole zero at the specified rise time and other shaping values Unlike the optimize feature it performs a pole zero for only the one rise time The pole zero Stop button aborts the pole zero and is normally not used When you are satisfied with the settings Close the Properties dialog and prepare to acquire data Once data acquisition is underway the advanced user may wish to return to MCB Properties and click on the Insight section s Start button to adjust the shaping para
74. ak preset in addition to the Live Time preset the low level samples will be counted to the desired fixed live time while the very active samples will be counted for the ROI peak count In this circumstance the ROI Peak preset can be viewed as a safety valve The values of all presets for the currently selected MCB are shown on the Status Sidebar These values do not change as new values are entered on the Presets tab the changes take place only when you Close the Properties dialog Enter the Real Time and Live Time presets in units of seconds and fractions of a second These values are stored internally with a resolution of 20 milliseconds ms since the MCB clock increments by 20 ms Real time means elapsed time or clock time Live time refers to the amount of time that the MCB is available to accept another pulse 1 e is not busy and is equal to the real time minus the dead time the time the MCB is not available 69 MAESTRO 32 V6 A65 B32 Enter the ROI Peak count preset value in counts With this preset condition the MCB stops counting when any ROI channel reaches this value unless there are no ROIs marked in the MCB in which case that MCB continues counting until the count is manually stopped Enter the ROI Integral preset value in counts With this preset condition the MCB stops counting when the sum of all counts in all channels for this MCB marked with an ROI reaches this value unless no ROIs are marked in the MCB
75. ake up for losses due to system busy results in an incorrect result if the gamma ray flux is changing as a function of time If an isotope with a very short half life is placed in front of the detector the spectrometer might start out with a very high dead time but the isotope will decay during the count and the dead time will be zero by the end of the count If the spectrometer extends the counting time to make up for the lost counts it will no longer be counting the same source as when the losses occurred As a result the number of counts in the peak will not be correct When the DSPEC Plus operates in ZDT mode it adjusts for the dead time losses by taking very short acquisitions and applying a correction in real time that is as the data are coming in to the number of counts in the spectrum This technique allows the gamma ray flux to change while the acquisition is in progress yet the total counts recorded in each of the peaks are correct The resulting spectrum has no dead time at all in ZDT mode the data are corrected not the acquisition time Thus the net counts in a peak are divided by the real time to determine the count rate ZDT mode has a unique feature in that it can store both the corrected spectrum and the uncorrected spectrum or the corrected spectrum and the uncertainty spectrum The uncorrected spectrum also called the live time corrected LTC spectrum can be used to determine exactly how many pulses at any en
76. ale value These keys duplicate the function of the lt F6 gt lt F5 gt keys 5 2 10 Compare Vertical Separation lt Shift 1 gt lt Shift gt In Compare mode the lt Shift 1 gt or lt Shift 1 gt keys decrease or increase the vertical separation between the two spectra Each successive key press will increase or decrease the separation by moving the spectrum read from disk The spectrum from disk can be moved below the first spectrum if it has fewer counts 5 2 11 Zoom In Zoom Out Keypad lt gt lt gt Keypad lt gt increases the scale of both axes in the Expanded Spectrum View so the peaks appear larger while Keypad lt gt does the opposite making the peaks look smaller The scale value for both axes is always shown on the Toolbar These functions are duplicated by the Zoom In Zoom Out buttons on the Toolbar and Zoom In and Zoom Out under the Display menu See Section 3 3 for a more detailed discussion 5 2 12 Fine Gain lt Alt gt lt Alt gt These accelerators step the internal amplifier up or down by one increment of fine gain on the selected Detector if it has a software controlled amplifier The new fine gain setting is shown on the Supplemental Information Line at the bottom of the screen If the gain stabilizer is active the display of the histogram data might not change The fine gain can also be set with Acquire Adjust Controls Section 3 2 3 lt Shift Alt gt lt Shift Alt gt
77. alid ROI at the desired peak No buffer to restore from There is no data in the buffer to use No close library match The REPORT function could not obtain a library entry close enough the located peak No File Name A file function was requested without specifying the filename adequately No more peaks or can t reach A peak search was attempted in a direction where no more can be found No peaks found The peak search function could not find any valid peaks in the spectrum No ROI There To Clear The ROI Clear function lt Delete gt requires at least one channel at the marker with the ROI bit set Not Allowed During Acquisition An execution error micro 135 arising from the Detector indicating that the Detector command is not allowed while acquisition is in progress Not Allowed During Current Mode An execution error arising from the Detector micro 136 indicating that the Detector command attempted is not allowed in the current mode of operation Not Allowed while Job running An attempt was made to execute a function on a Detector while a JOB was running on that Detector Not enough memory STRIP aborted The STRIP function temporarily allocates enough memory to read the file but the allocation failed in this case probably due to insufficient available memory in the system The STRIP function is discontinued 171 MAESTRO 32 V6 A65 B32 Not enough memory for COMPARE The Compare mode could not be ex
78. bar This command not using the rubber rectangle is duplicated by Keypad lt gt the Toolbar s Zoom In button and Zoom In on the Display menu 4 8 6 Zoom Out Zoom Out adjusts the horizontal and vertical scales in the Expanded Spectrum View to view a larger portion of the spectrum The vertical scale is doubled and the horizontal scale is increased by about 6 of the full horizontal scale This command is duplicated by Keypad lt gt the Toolbar s Zoom Out button and Zoom Out on the Display menu 4 8 7 Undo Zoom In This will undo or reverse the last Zoom In operation done with the rubber rectangle It restores the display to the horizontal and vertical expansion before the Zoom In It is not the same as Zoom Out 4 8 8 Mark ROI This function marks an ROI in the spectrum for the total width of the rubber rectangle All channels are marked See also Sections 3 5 3 and 4 5 4 4 8 9 Clear ROI This clears the ROI bits of all channels in the rubber rectangle or all ROI channels contiguous to the channel containing the marker See also Section 4 5 5 4 8 10 Peak Info If the marker is in an ROI this displays one of the following e Ifthe spectrum is not calibrated the channel centroid FWHM and FW 1 x M in channels are displayed e If calibrated the channel centroid FWHM and FW 1 x M in channels and energy the gross and net area and the library best match are displayed 106 3 MENU COMMANDS
79. be adjusted so the stabilizer can continue to function when the adjustment value reaches 100 the stabilizer cannot make further corrections in that direction The Center Channel and Width fields show the peak currently used for stabilization To enable the stabilizer enter the Center Channel and Width values manually or click on the Suggest 3 MENU COMMANDS Properties for RANDT266 MCB 132 4 x High Voltage About Status Presets MDA Preset Amplifier Amplifier2 Amplifier PRO ADC Stabilizer Center Chan jo Width fi Suggest Region f Zero Stabilization Enabled Adjustment Adjustment Initialize 0 Initialize 0 Center Chan jo Width fi Suggest Region Fig 50 DSPEC Pro Stabilizer Tab Region button Suggest Region reads the position of the marker and inserts values into the fields If the marker is in an ROI the limits of the ROI are used If the marker is not in an ROI the center channel is the marker channel and the width is 3 times the FWHM at this energy Now click on the appro priate Enabled checkbox to turn the stabilizer on Until changed in this dialog the stabilizer will stay enabled even if the power is turned off When the stabilizer is enabled the Center Channel and Width cannot be changed High Voltage Figure 51 shows the High Voltage tab which allows you to turn the high voltage on or off set and monitor the voltage a
80. bled grayed to prevent interference with JOB as it runs The JOB filename will be displayed on the Title Bar If you try to start another JOB while a JOB is already running the dialog shown in Fig 81 will open showing the name of the current JOB In this case the options available are to terminate execution of the running JOB click on Terminate Job or allow the JOB to continue click on Close or press lt Esc gt Look in I User E l fi E El 28 AVS 1 Job 5 FIELDSAW BEEP JOB E fiter10ob 5 Beeps job ZE filter job Ses Beepss job ZE fred job Se bottle job ZE liter job gs D1832 job ZE liter2 job File name Jaskvars job Files of type Job Files y Cancel M Show Contents Edit File ask_spectrum loop 5 wait 10 save ShortBase 1 loop FileE xt end_loop DR Fig 80 JOB File Selection and Execution To edit a JOB file from the Run JOB File dialog whether or not Show Contents is activated select a file from the list and click on the Edit File button This will open Windows Notepad with the JOB file loaded NOTE When editing is complete the file must be saved in Notepad select Save or Save As under the File menu for the changes to be effective When Notepad is closed File Exit the newly edited file will be shown in the Run JOB File dialog s Show Contents list box If a JOB is terminated prematurely because of some error JOB Control El Runn
81. br ee 96 A COTS eg hc are ea AA LUE COR PECORE CRT RPE SORES 96 do Mai ay Gets Be hem A A cee oe See bee ee a ee need 97 ASS VIVAS os linate Sate ea aN lean 97 454 Mark Perle rar a da ara E be Tod Mak Rete 97 MAESTRO 32 V6 A65 B32 eS Cleaner E de ee has 97 bi CleatAll o cicca die ii Pad Mead deride Sone Merk te N 98 BS 2 SAVE Elle Ste sok piace e Hck oA ABO ERE WEEE LURES CAO Tie RE RERRS 98 439 5 RecallPilo g zah stl cg Sats viale Lear ehi 98 A AAA iene 99 AOL DEE as y EVA A ERA AT EA 99 4 6 2 Detector Bue arar e E ao 99 4 03 Logar thinie nicole UP aa 100 46A AUTOM It in in lesi a aaa e God hd 100 4 6 5 Baseline LOMA A A AA TI AA 100 AB LODO SS alan os etnias iaia 100 AT ZORO eni ais it bee rd rd ee Bro arabe aera 100 40 9 Cette acacia eu pes eee GSR SAA AS 101 4 6 9 Full View AA A REA 101 4 0106 Isotope Markers oero iertam Di ia 101 4 6 11 Preference AAA EME OSES oe DOLE EL EDES 102 4 6 11 1 Points Fill ROI Fill All oooooooooooo o 102 46 12 Spectrum Col iia wal oN ee eae es 103 4 6 11 3 Peak Info Font Color 00 cee ee eee 104 PET IO ss a Cele te pea a ati 104 4 8 Right Mouse Button Menu i sd seas so ar aa lea 105 40 SLATE diete kay atte eee ied egy RR dates 105 IT SO od ciara i A ir sn 105 RARA ot Pete os nae PRI INTO SII TTI IT TOTTI 105 4 84 COPY to Buffer mala cavar tadas aaa 105 4 0 9 ZOOMIN A oe hae ke lene bei ira 105 A RA O sei Aa ee Barto enel E A a a 106 A Boh
82. cated by lt F3 gt 4 2 7 MCB Properties ORTEC CONNECTIONS 32 applications now use a uniform data acquisition setup dialog called Properties In MAESTRO the Properties dialog opens when you select the Acquire MCB Properties command Two of our most commonly used Detectors the DSPEC Pro and Patent number 6 327 549 44 3 MENU COMMANDS Fig 45 Comparison of Uncertainty and ZDT Spectra Showing Labels in Full Spectrum View digiDART are described here To see the Properties dialogs for our other CONNECTIONS compliant MCBs see the MCB Properties manual Depending on the currently selected MCB the Properties dialog displays several tabs of hardware controls including ADC setup parameters acquisition presets high voltage controls amplifier gain adjustments gain and zero stabilizers pole zero and other shaping controls and access to the InSight Virtual Oscilloscope In addition the Status tab for certain MCBs monitors conditions such as alpha chamber pressure detector status charge remaining on batteries and the number of spectra collected in remote mode Find your Detector s setup section here or in the MCB Properties manual move from tab to tab and set your hardware parameters then click on Close Note that as you enter characters in the data entry fields the characters will be underlined until you move to another field or until 5 seconds have lapsed since a character was last entered During the time
83. cated by the ROI indexing buttons on the Status Sidebar 5 2 3 Next Peak lt Ctrl gt gt lt Ctrl gt The lt Ctrl gt gt and lt Ctrl gt keys perform a peak search on the spectrum in the higher or lower channel direction respectively and move the marker to the first peak found If no peak is found the program displays the No More Peaks message and the marker does not move If the spectrum is energy calibrated and the library loaded the system displays the best match from the library within two FWHMSs of the peak centroid If there is no match within this range the No Close Library Match message is displayed These functions are duplicated by the Peak indexing buttons on the Status Sidebar 5 2 4 Next Library Entry lt Alt gt lt Alt gt These keys move forward or backward through the nuclide library to the next closest library entry Each button press advances to the next library entry and moves the marker to the corresponding energy Also instead of indexing from a previously identified peak the marker can be positioned anywhere in the spectrum and these keys used to locate the entries closest in energy to that point If a warning beep sounds it means that all library entries have been exhausted in that direction or that the spectrum is not properly calibrated for reaching the energy with the marker In any case if an appropriate peak is available at the location of the marker data on the peak activit
84. ction in the selected Detector The display must be in Detector mode If the Detector is not active the entry is grayed The Detector can also be stopped with the accelerator lt Alt 2 gt the Stop Acquisition button on the Toolbar and the Stop command on the right mouse button menu 4 2 3 Clear Clear erases the spectral data and the descriptors e g real time live time start time for the currently active Detector or buffer window The presets are not altered This function might not operate on some types of Detectors when they are collecting data The data can also be cleared with lt Alt 3 gt the Clear Spectrum button on the Toolbar or the Clear command on the right mouse button menu 4 2 4 Copy to Buffer The Copy to Buffer function transfers the data and descriptors e g live time real time from the selected Detector to a new buffer window This function can also be performed with lt Alt 5 gt the Copy Spectrum to Buffer Toolbar button or the Copy to Buffer command on the right mouse button menu 4 2 5 Download Spectra This command supports the Detective trans SPEC digiDART and DART and is used to download the spectra from the MCB to the computer disk The files are stored in the directory and format specified in the dialog under File Settings Section 4 1 1 and are named according to this format 43 MAESTRO 32 V6 A65 B32 SSS 11111111 ddddddddd ttttttttt ext where sss is the sequence number
85. d character 125 MAESTRO 32 V6 A65 B32 LF ASCII line feed character ESC ASCII escape character ShortPath Relative pathname of the spectrum file ShortBase Relative pathname of the spectrum without the and extension Password Value entered in ASK PASSWORD command Owner Value entered in ASK PASSWORD command The filename variables are updated each time a READ operation is performed The READ operations are LOAD RECALL RECALL_CALIBRATION RECALL_ROI STRIP 6 4 JOB Programming Example A common operation that is ideal for a JOB file is the collection of many consecutive sample spectra without user intervention An example of this is the collection of a series of spectra to show the radioactive decay in a particular sample This process can be described as follows Du un Set the Detector parameters such as live time Start the acquisition Wait for the acquisition to stop Integrate the nuclide peak Record the peak area Repeat this for the required number of samples By looking at the list of steps above and the explanations below the necessary commands can be determined and written down The first step in the process is to initialize the Detector to the condition needed of 1000 seconds live time These are SET DETECTOR 1 SET PRESET CLEAR SET PRESET LIVE 1000 CLEAR 126 6 JOB FILES Note that all the presets were cleared before setting the live time preset This i
86. d file n exit 1 fread amp mca_num sizeof mca_num 1 f pointer MCA fread amp segment sizeof segment 1 f pointer seg fread acq_ time sizeof char 2 f pointer start time acq time 2 0 seconds short atoi acq time fread amp realtime sizeof realtime 1 f pointer 20 ms tics fread amp livetime sizeof livetime 1 f pointer 20 ms tics fread acq_ time sizeof char 3 f pointer start day acq_time 2 0 day short atoi acq time fread month sizeof char 4 f pointer start month month 3 0 fread acq_ time sizeof char 2 f pointer start year acq_time 2 0 year 1900 short atoi acq time fread acq time sizeof char 1 f pointer century if acq_time 0 gt 0 year year acq time 0 0 100 fread acq time sizeof char 3 f pointer hour acq_time 2 0 hour short atoi acq time fread acq time sizeof char 2 f pointer minute 163 MAESTRO 32 V6 A65 B32 164 acq_time 2 0 minute short atoi acq time fread amp chan_ offset sizeof chan offset 1 f pointer offset fread amp num chans sizeof nuM chans 1 f pointer chans printf FILE TYPE d MCA 6d n f type mca_num printf SEGMENT d n segment printf REALTIME d SECONDS n realtime 50 printf LIVETIME d SECONDS n livetime 50 pr
87. dead time could be high resulting in a long counting time for the sample If you set the ROI Peak preset in addition to the Live Time preset the low level samples will be counted to the desired fixed live time while the very active samples will be counted for the ROI peak count In this circumstance the ROI Peak preset can be viewed as a safety valve The values of all presets for the currently selected Detector are shown on the Status Sidebar These values do not change as new values are entered on the Presets tab the changes take place only when you Close the Properties dialog Enter the Real Time and Live Time presets in units of seconds and fractions of a second These values are stored internally with a resolution of 20 milliseconds ms since the Detector clock increments by 20 ms Real time means elapsed time or clock time Live time refers to the amount 57 MAESTRO 32 V6 A65 B32 of time that the Detector is available to accept another pulse 1 e is not busy and is equal to the real time minus the dead time the time the Detector is not available Enter the ROI Peak count preset value in counts With this preset condition the Detector stops counting when any ROI channel reaches this value unless there are no ROIs marked in the Detector in which case that Detector continues counting until the count is manually stopped Enter the ROI Integral preset value in counts With this preset condition the Detector stops count
88. detector descriptions Insufficient memory for buffer The memory buffer could not be created due to insufficient available memory in the system Sometimes this error can be eliminated by attempting the buffer operation again but this is not recommended due to the marginal state of the system which might result in other errors Invalid EXE file The requested file was invalid This is Windows Error 11 Invalid command or missing argument An incorrect command was entered in a JOB file This is JOB Error 4 Invalid Detector input selection The specified Detector number is incorrect That is there is no corresponding Detector for that number Invalid File Format A function to recall a file could not obtain data in the proper format Invalid library file An attempt was made to load a nuclide library from a file that was not in the proper format Invalid Start Record No valid Start Record file could be found to provide the start date time for the Detector Invalid loop count An incorrect loop count was entered in a JOB file This is JOB Error 7 Invalid start date time The start date and time returned from the MCB hardware was incorrect This might be due to a loss of battery power in the MCB Invalid start record The start record for this Detector contained invalid information 169 MAESTRO 32 V6 A65 B32 Job Aborted or Premature EOF A JOB was aborted by the user or an end of file was encountered while trying
89. does not stop the JOB will not continue WAIT_AUTO For the DSPEC only this waits until the optimize function is complete WAIT_CHANGER For MCBs with sample changer controls e g DSPEC 919E this waits until the sample ready signal on the rear panel is present It is used in conjunction with the SEND MESSAGE function for more control over the sample changer than is provided by the CHANGE SAMPLE command WAIT_PZ This waits until the pole zero function is complete Not valid on all MCBs ZOOM lt i gt Changes the size of the MAESTRO window Selects one of icon normal or maximum according to the argument The arguments are 1 Minimize icon on Taskbar 0 Normal size determined by last use 1 Maximize full screen 141 MAESTRO 32 V6 A65 B32 ZOOM lt x y w h gt Changes the position and size of the MAESTRO window The arguments are x position of upper left corner of window 0 is left y position of upper left corner of window 0 is top width of window in pixels starting at x and going right height in pixels starting at y and going down rit x I Since these arguments are in pixels experimentation is the best way to determine the desired size 142 7 UTILITIES 7 1 WINPLOTS This program makes a hardcopy output of any type of ORTEC spectrum file in a fixed format with many user set optional variations such as grid lines available The plotting output devices include the full range of graphic
90. ds as ios ok pee 159 TABLE OF CONTENTS 2s Program Examples scan aun ET E AA ERE 159 Bake POR TRAN Tan page side e ed dee ee eee bid te ae Bol ee eee 160 BZ Me CHN Files ou Sawn ewes Re eee Ses Ce EAH oe BEE ee 160 BZ Ze ROC AA AR AS 161 B22 CAN CAS rata E A 162 APPENDIX C ERROR MESSAGES 0 ccc cece eee eect ence eens 165 INDEX 010304 ili oasi eee Geeta ea Oh bee eG ua kN eee ee oS 175 NOTE We assume that you are thoroughly familiar with 32 bit Microsoft Windows usage and terminology If you are not fully acquainted with the Windows environment including the use of the mouse we strongly urge you to read the Microsoft documentation supplied with your Windows software and familiarize yourself with a few simple applications before proceeding The convention used in this manual to represent actual keys pressed is to enclose the key label within angle brackets for example lt F1 gt For key combinations the key labels are joined by a within the angle brackets for example lt Alt 2 gt INSTALLATION If you are installing a new multichannel buffer MCB in addition to MAESTRO 32 or if your MCB and or new MAESTRO 32 is accompanied by a CONNECTIONS 32 Driver Update Kit Part No 797230 follow the installation instructions that accompany the driver update kit For information on installation and configuration hardware driver activation network protocol configuration and building the master list of
91. e Conversion Gain Lower Level Discriminator and Upper Level Discriminator controls In addition the current real time live time and count rate are monitored at the bottom of the dialog Gate The Gate control allows you to select a logic gating function With this function Off no gating is performed that is all detector signals are processed with the function in Coincidence a gating input signal must be present at the proper time for the conversion of the event in Anticoincidence the gating input signal must not be present for the conversion of the detector 51 MAESTRO 32 V6 A65 B32 signal The gating signal must occur xj peor and extend 500 ns beyond peak High Voltage About Status Presets MDA Preset detect peak maximum Amplifier Amplifier2 AmplfierPRO ADC Stabilizer Gate Conversion Gain 16384 ZDT Mode of ee cee E ower Level Disc Use this droplist to choose the ZDT ZDT Mode dl Mode to be used for collecting the Of ad Upper Level Dise 16383 zero dead time corrected spectrum see Section 4 2 7 6 The three modes are Off LTC only NORM_CORR Real Time Live Time pa LTC and ZDT and CORR _ ERR 5333 82 2759 16 ratla Letta ERR and ZDT Ifone of the ZDT modes is selected both spectra are stored in the same spectrum SPC file If you do not need the ZDT spectrum you should select Off Fig 49 DSPEC Pro ADC Tab In MAESTRO the display can show either of the
92. e and Live detector Amplifier Ampifier2 AmplifierPRO ADC Stabilizer temperature are available only for High Voltage About Status Presets MDA Preset SMART 1 detectors For non SMART 1 detectors they show N A Ac ERR Power Failure Error y DIM 24 State Of Health ERR The parameters displayed are y DIM 12v State Of Health ERR DIM 12 State Of Health ERR Detector State of Health x DIM 24V State Of Health ERR This is OK if all the SOH are OK b for Temperature State Of Health ERR and ERR if any one is ERR DIM 24V State of Health This is OK if the 24 volt supply in Fig 53 DSPEC Pro Status Tab the DIM has stayed within 200 mV of 24 volts since the last time the SOH was cleared DIM 12V State of Health This is OK if the 12 volt supply in the DIM has stayed within 200 mV of 12 volts since the last time the SOH was cleared DIM 12V State of Health This is OK if the 12 volt supply in the DIM has stayed within 200 mV of 12 volts since the last time the SOH was cleared DIM 24V State of Health This is OK if the 24 volt supply in the DIM has stayed within 200 mV of 24 volts since the last time the SOH was cleared Temperature State of Health This is OK if the detector temperature has stayed below the high temperature limit set in the detector since the last time the SOH was cleared This is available only for SMART 1 detectors High Voltage S
93. e SOH was cleared 67 MAESTRO 32 V6 A65 B32 Preamplifier overload State of Health This is OK if the preamplifier overload has not activated since the last time the SOH was cleared Security State of Health This is OK if the security test was passed at the end of the last spectrum acquisition This is available only for SMART 1 detectors Power State of Health This is OK if the power to the DIM was constant during the last spectrum acquisition 24 volts This is the current value of the 24 volt supply in the DIM as delivered to the detector 12 volts This is the current value of the 12 volt supply in the DIM as delivered to the detector 12 volts This is the current value of the 12 volt supply in the DIM as delivered to the detector 24 volts This is the current value of the 24 volt supply in the DIM as delivered to the detector High Voltage This is the current value of the high voltage bias supply in the DIM as delivered to the detector Detector temperature This is the detector temperature at the time the current spectrum acquisition stopped This is available only for SMART 1 detectors Live detector temperature This is the detector temperature at the current time This is available only for SMART 1 detectors Battery voltage This is the present voltage of the internal battery Battery full This is an estimate of the amount of power remaining in the battery 68 3 MENU COMMANDS Battery time
94. e WINPLOTS Command Line Interface will support options available in the interactive mode as shown below WINPLT32 lt spectrum gt R lt roi file gt S lt set file gt P where lt spectrum gt Specifies the spectral data file SPC An1 or CHN The extension must be included R lt roi_file gt Specifies the ROI file The extension must be included S lt set_file gt Specifies the settings file The extension must be included P Causes the program to print the plot and exit automatically Used mainly in JOB files or the Export function 7 2 Nuclide Library Editor MAESTRO V6 now uses the GammaVision Library Editor to create and edit library files which are used in the peak search and report functions for the quantitative identification of and activity calculations for spectral components according to calibrated peak energy The new library editor allows you to work with both the MAESTRO GammaVision LIB format and with mpB format libraries created by ORTEC s NuclideNavigator products The old MAESTRO library format mcA is no longer supported The library files are organized by nuclide then by the nuclide s peaks Library data include the nuclide name half life and half life uncertainty Nuclide names can be any combination of eight characters but must be consistent throughout all files The library peak data include the energies and branching ratio or gammas disintegration for each energy The default file exte
95. e configuration program The MAESTRO MCA Pick List initially contains all of the instruments in the master list To add a Detector to the MAESTRO Pick List for this PC click on the name in the Master list then click on Add To add all the Detectors on the Master Detector List click on All To remove a Detector from this local pick list click on the name in the Pick List and click on Remove To remove all the Detectors click on New When Detector selection is complete click on OK These selections will be saved to disk and used by MAESTRO until changed on this screen or until the entire network is reconfigured 95 MAESTRO 32 V6 A65 B32 Detector List Editor Master Detector List A A A A A 0000002 RONALDKE MCB 2 0000003 SINGLEYO1 919 input 1 0000004 SINGLEYO1 919 input 2 0000005 SINGLEYO1 919 input 3 0000006 SINGLEYO1 919 input 4 0000011 DART Portable unit 3 0000106 DART Portable unit 2 0000109 92 D2MCALLISTER_DO Add gt Remove lt gt 0000001 0000002 0000004 0000006 0000106 0000109 MCA Pick List RONALDKE MCB 1 RONALDKE MCB 2 SINGLEYO1 919 input2 Cancel SINGLEYO1 919 input 4 aee DART Portable unit 2 92 O2MCALLISTER_DO i All New Fig 90 Detector List Editor Dialog CONNECTIONS 32 programs such as MAESTRO can have more than one Detector pick list on the PC For more information on creating and using alternate pick lists see the listname discussion on page 157
96. e e de e e de e e de ke e de ke e de ke e de e ke de e e Fe ke e He e e ke ke e ke ke ke ke ke ke ke ke k k kk k Sample program compatible with Microsoft and Borland C to read header and channel data from a CHN data file VETTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTITTXTTTTTTXTTTTTTT11 9 include lt stdio h gt include lt stdlib h gt define CHN 1 main argc argv int argc char argv char acq_time 8 buffer for time date month 4 buffer for month string short f type CHN file type unsigned short chan_offset beginning channel number count loop counter mca_num MCA number num_chans no of data channels num writ no of bytes written out segment segment number year acquisition year day acquisition day hour acquisition hour minute acquisition minute second acquisition second long int livetime 20ms tics of livetime real time 20ms tics of realtime chan data stores channel data FILE pointer if argc 2 printf USAGE readchn filename chn n exit 1 162 APPENDIX B FILE FORMATS pointer fopen argv 1 rb AED LN Header Data Output header info from CHN file VETTITTTTTTTTTETTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 9 Read fileype 1 CHN fread amp f type sizeof f type 1 f pointer if f type CHN printf Not a vali
97. e is in ASCII text format The output spectrum file The default is the inname with the extension changed If the outname is not given the spectrum file will not be overwritten by the default name The length of the spectrum file converted from text will be the next higher power of two with the surplus channels set to 0 Set the format output to 128 characters per line default is 70 characters per line Do not print channel as first number in line default is to print the channel number The channel number is followed by a colon to separate it from the data Number of data columns is n default is 5 Error returned if line width will exceed available space Do not write acquisition or analysis information in output file default is to write this information Do not write header information in output file default is to write this information Import a text file and save as SPc or CHN file If one filename is given default is to convert that file to the other format i e for AAA SPC the output will be AAA TXT If two filenames are given the default is to convert the spectrum to text The TXT file will be overwritten even if the spPc file is not located TRANSLT SPC GOODSPEC TXT TEXTSPEC ni nh coll This will make a text file of one column with no header no analysis information and one channel per line For more comprehensive file translation capabilities use our DataMaster Spectrum File Format Translator
98. e of Resistor Feedback y r Input Polarity amplification from 0 45 to 100 E EAH Input Polarity The Input Polarity radio buttons select the preamplifier input signal polarity for the signal from the detector Fig 56 digiDART Amplifier Tab Normally GEM p type detectors have a positive signal and GMX n type have a negative signal Baseline Restore The Baseline Restore is used to return the baseline of the pulses to the true zero between incoming pulses This improves the resolution by removing low frequency noise such as dc shifts or mains power ac pickup The baseline settings control the time constant of the circuit that returns the baseline to zero There are three fixed choices Auto Fast and Slow The fast setting is used for high count rates the slow for low count rates Auto adjusts the time constant as appropriate for the input count rate The settings Auto Fast or Slow are saved in the digiDART even when the power is off The time constant can be manually set on the InSight display see the discussion in Section 4 2 7 3 You can view the time when the baseline restorer is active on the InSight display as a Mark region see the discussion on Marks page 77 In the automatic mode the current value is shown on the InSight sidebar Fig 67 For a low count rate system the value will remain at about 90 Preamplifier Type Use the Preamplifier Type section to choose Transistor Reset or R
99. e rubber rectangle and right mouse button menu see Sections 3 5 3 and 4 8 8 and as described in Section 4 5 4 4 5 3 UnMark This sets the ROI status to the unmark or reset condition In this state the channels are unmarked with the ROI bit as the cursor is moved with lt gt or lt gt into the channel Moving the marker with the mouse does not alter the ROI in this mode This function is duplicated by lt Alt U gt and by lt F2 gt which toggles between Off Mark and UnMark 4 5 4 Mark Peak This function marks an ROI in the spectrum at the marker position in one of two ways e Ifthe spectrum is calibrated the region is centered on the marker with a width of three times the calibrated FWHM There does not need to be a peak at the marker position e Ifthe spectrum is not calibrated the region is centered on the peak located within two channels of the marker and as wide as the peak If the peak search fails or if the peak is not well formed no ROI is marked There is no limit on the size of a peak or ROI therefore in some uncalibrated spectra large ROIs might be marked ROIs can also be marked this way with the ROI Ins button on the Status Sidebar the Mark ROI button on the Toolbar Keypad lt Ins gt and lt Insert gt See also Mark ROI on the right mouse button menu Section 4 8 8 4 5 5 Clear This clears the ROI bits of all ROI channels contiguous to the channel containing the marker This is duplicated by t
100. e uncertainty in the net area is the square root of the sum of the squares of the uncertainty in the adjusted gross area and the weighted error of the adjusted background The background uncertainty is weighted by the ratio of the adjusted peak width to the number of channels used to calculate the adjusted background Therefore net peak area uncertainty is given by sii dat E LE 5 6 h l 1 where A the adjusted gross area A the net area B the background area I the ROI low limit h the ROI high limit 4 3 5 Input Count Rate This command is supported by most modern MCBs the menu lApubCount Rate 244 exe item is gray inactive for unsupported units and displays or hides the input count rate indicator Fig 77 in the upper left Fig 77 Input Count Rate corner of the spectrum window this is the input count rate Display Expanded Spectrum not the number of processed pulses Note that if the full SAN 89 MAESTRO 32 V6 A65 B32 spectrum view is positioned in the same corner it can obscure the Input Count Rate box This command is also on the right mouse button menu 4 3 6 Sum The Sum function performs its calculation in one of two ways depending on the position of the marker 1 Ifthe marker is not in an ROI the sum of the data channels in the buffer is shown on the display The complete channel width e g 1 to 16384 is summed 2 Ifthe marker is in an ROI the sum of the data channels in the
101. ected Detector and the spectrum in the buffer The buffer will have the memory size of the spectrum that was last transferred from Detector or disk file The Detector list on the right side of the Toolbar indicates whether the buffer or a particular Detector is currently displayed and the Status Sidebar shows the presets for the displayed data This duplicates lt F4 gt and Display Detector Buffer 5 3 6 Narrower Wider lt gt lt gt The lt gt key increases the horizontal scale of the Expanded Spectrum View so the peaks appear wider while the lt gt key decreases the horizontal scale making the peaks look narrower The horizontal and vertical scale values are displayed on the Toolbar These functions are duplicated by lt F7 gt lt F8 gt 5 4 Function Keys 5 4 1 ROI lt F2 gt The lt F2 gt key switches the ROI marker status among the Mark UnMark and Off conditions so you can use the marker to set or clear the ROI bits for particular channels or groups of channels or return the marker to normal usage The current ROI marking status Marking Unmarking is shown in at the extreme right of the Menu Bar Off mode is shown as blank ROI bits are changed by using the keyboard to move the marker to a channel as follows Mark The channel is marked set as an ROI with the marker e UnMark The channel is removed from the ROI reset with the marker e Off The ROI status is unchanged with the marker 5 4 2 ZDT Normal
102. ector LFR 50 MAESTRO file locations directories Lecca lea 33 Mark InSight mode 47 60 77 Mark ROW 24 004 a ee 18 97 106 Marker moving with the mouse 20 Marker Information Line 16 A A 1 models supported 3 MCBs HADAR T trae 59 A g acgocew Bema ate Be ont aes 58 RICOGi O 13 ACQUI a ARTT 42 A ERE MR ERE IMC BI 99 Al oe ar das a DA 27 A Acre ee ene este ae a wee 148 right mouse button 20 21 105 Robert 96 kose 19 moving the markers iis 20 Right mouse button menu 20 24 rubber rectangle uiid 20 TOG ra A io E ee ee 46 AN 75 is So Mia E A E A 47 78 AAA ton N EAA 87 106 Peale Searels orale iii 86 do Gi fon boot oo ten ese ae 76 77 Pileup reject marker 0 dl Plot spectrum ts 143 POMS ZEO e cy divas Soden n den E took 47 49 78 Preamplifier pe ieri 47 Presets see Acquisition presets 57 Print SPpeCirani se Cie lana 36 143 Program examples for reading spectra 159 Pulse height analysis PHA 1 Realtime A O 57 Recall read Spec nonan nunnan OA itn 33 ROLE eare O ata 98 Region of interest see ROI 96 Report Rollei 37 Resistive Feedback 47 Resolution dd 48 49 77 78 Resolution Enhancer 50 Right mouse button menu 20 21 105 Clear ROL Sra pees 106 Mark ROL cents aa uk Mews ee al 106 Peak MI
103. ectrum View are portion of spectrum now displayed in Highlighted in Full Spectrum View the Expanded Spectrum View see Fig 8 To quickly move to different part of the spectrum just click on that area in the Full Spectrum View and the expanded display updates immediately at the new position The Expanded Spectrum View shows all or part of the full histogram this allows you to zoom in on a particular part of the spectrum and see it in more detail You can change the expanded view vertical and horizontal scaling and perform a number of analytical operations such as peak information marking ROIs or calibrating the spectrum This window contains a vertical line called a marker that highlights a particular position in the spectrum Information about that position is displayed on the Marker Information Line see item 10 below ROI Status Area on the right side of the menu bar indicates whether the ROI marking mode is currently Mark or UnMark This operates in conjunction with the ROI menu commands and arrow keys see Section 4 5 15 MAESTRO 32 V6 A65 B32 9 Status Sidebar on the right side of the screen provides information on the current Detector presets and counting times the time and date and a set of buttons for moving easily between peaks ROIs and library entries see Section 3 6 10 Marker Information Line beneath the spectrum showing the marker channel marker energy and channel contents 11 Supplementary
104. ecuted due to insufficient memory for the second spectrum OK to overwrite A file output function discovered that the specified filename already exists and will only overwrite the file after you confirm your intentions See also File already exists Out of memory There is not enough memory in the PC to perform this function This is Windows Error 0 Path not found The specified path for the file was not found This is Windows Error 3 Peak rejected for asymmetry Peak statistics could not be obtained for the function due the calculated non Gaussian asymmetry of the obtained peak Pick list is outdated The Master Detector List has been changed by someone on the network since the last time the Detector pick list on this copy of MAESTRO was edited Preset already reached Acquisition START was attempted on a Detector or Segment that had already satisfied the preset condition s in some way Presets not programmed to Detector correctly The program attempted to change the presets in the Detector but was unable to verify the changes Presets can t be changed during acquisition Changes in the preset condition s are not allowed while the Detector is actively acquiring Problem with Buffer A JOB error resulting from some problem with the buffer usually indicating insufficient memory to create or enlarge the buffer as needed Problem with Calculation A JOB error resulting from a problem with a calculation
105. ed The SBS60 is a single ISA card spectrometer intended for use in Safeguards applications 5 Support for Windows 2000 Pro has been added MAESTRO 32 V6 A65 B32 2 INSTALLING MAESTRO 32 If your MAESTRO CD is accompanied by a CONNECTIONS 32 Driver Update Kit Part No 797230 follow the installation instructions that accompany the update kit which supersede the instructions below NOTE For systems using Windows 2000 or XP ORTEC CONNECTIONS 32 software products 1 2 3 4 are designed to operate correctly only for users with full Administrator privileges Limiting user privileges could cause unexpected results Insert the MAESTRO 32 CD If it does not autorun go to the Windows Taskbar and click on Start then Run In the Run dialog enter D Disk 1 Setup exe use your CD ROM drive designator instead of D then click on OK This will start the installation wizard click on Next and follow the wizard prompts On the Instrument Setup page mark the checkbox es that corresponds to the instrument s installed on your PC as shown in Fig 1 To see more information on each instrument family click on the family name and read the corresponding Item Description on the right side of the dialog If this is a MAESTRO upgrade and not a first time installation you probably already have ORTEC CONNECTIONS 32 instruments attached to your PC If so they will be included on the Local Instrument List at the bottom of the dialo
106. ed with the spectrum You can also activate the ask on save feature for the sample description so it can be modified before the spectrum is saved 3 MENU COMMANDS page 104 page 105 Settings Recall Save Save As Export Import Print ROI Report Compare Exit About MAESTRO Fig 21 File Menu 27 MAESTRO 32 V6 A65 B32 When you finish setting the parameters in this dialog and click on OK these settings will be used until changed The file types are integer CHN integer sPc floating point sPc and File Settings General Export Import Directories m Save File Format Integer Chn C Integer Spe Data sgsgeencsseencensncnssenscezeoscneseseenessnsnassencnseres de A A ef C ASCII Spe Data ASCII SPE The CHN file format is the format used by all versions of MAESTRO It is the simplest format and therefore the easiest to read with other programs It does not contain the analysis parameter data the complete calibration or other data needed for the nuclide analysis The format is described in the ORTEC Software File Structure Manual for DOS and Windows Systems Part No 753800 hereinafter called the File Structure Manual Ask On Save Options IT Sample Description ee source 1714 Fig 22 General Tab The two sPc formats integer and floating point are identical except for the format of the spec
107. een located to advance Del forward or backward through the library to the next closest library entry Each button press advances to the next library entry and moves the marker Peak to the corresponding energy pa EE a Instead of using the Peak buttons to index from a previously identified peak position the marker anywhere in the spectrum and click on the ta Library Library buttons to locate the entries closest in energy to that point If a warning beep sounds it means that all library entries have been exhausted Fig 19 Indexing in that direction or that the spectrum is not calibrated In any case if an Buttons Detector appropriate peak is available at the location of the marker data on the peak Mode top buffer are displayed on the Marker Information Line at the bottom of the screen O The ROI and Peak indexing buttons are duplicated by lt Shift gt lt Shift gt and lt Ctrl gt lt Ctrl gt respectively The Library buttons are duplicated by lt Alt gt lt Alt gt gt The Del button function is duplicated by the lt Delete gt key and Clear ROI on the menus and Toolbar The Ins button has the same function as the lt Insert gt key and Mark ROI on the menus and Toolbar The Info button duplicates the Calculate Peak Info command Peak Info on the right mouse button menu and double clicking in the ROI 3 7 Opening Files with Drag and Drop Several types of files can be selected and loaded into MAESTRO us
108. ent amplifier output pulse Note that at the bottom of the window the marker channel is displayed in units of time Exiting InSight Mode To exit the InSight mode and return to the PHA display press lt Ese gt or go to the Insight section on the Amplifier 2 tab and click on Stop The PHA mode is set to STOP when in the InSight mode InSight Mode Controls The Status Sidebar changes from the PHA mode controls to the InSight controls for adjusting the peak display Fig 67 On the left is a vertical scrollbar for adjusting the vertical offset of the waveform The value of the offset is shown on the display Double clicking the mouse in the scrollbar will set the vertical offset to the vertical value of the channel at the marker position This is to conveniently zoom in on a particular part of the waveform such as the tail for pole zeroing In the Auto trigger mode the display is updated every time a new pulse exceeds the trigger level To keep a single pulse displayed select Single Click on Reset to refresh the display to see the next pulse There will usually be one or two pulses in the pipeline that will be displayed 75 MAESTRO 32 V6 A65 B32 InSight DSJR s n 241 Calibration source 1714 File Acquire Calculate Services AOI Display sal Om 141 CE 129 a o 9 8 94 2 05 R orn 241 Mark Peak E Trigger LLD v l TT Single Reset Delay 79 60 4 Baseline Restorer Auto e ee pS
109. ents connected directly to your PC or do not wish to share your instruments this section does not apply to you If you have installed Windows XP Service Pack 2 and have fully enabled the Windows Firewall as recommended by Microsoft the default firewall settings will prevent other computers from accessing the CONNECTIONS 32 MCBs connected directly to your PC To share your locally connected ORTEC instruments across a network you must enable File and Printer Sharing on the Windows Firewall Exceptions list To do this 1 From the Windows Control Panel access the Win dows Firewall entry File Edit View Favorites Tools Advanced Help A Back Search Fold y Depending on the appearance of your O AE a VEE Address Network Connections Control Panel there are two ways to ce A LAN or High Speed Internet do this Either open the Windows Network Tasks Frs Firewall item if displayed or open the E Create a new connection BT Tales Network Connections item then choose ii ali Hoeden 280 Change Windows Firewall Settings as illustrated in Fig 4 This will open the Fig 4 Change the Firewall Settings Windows Firewall dialog led Of 2 Goto the Exceptions tab then click to mark the File and Printer Sharing checkbox Fig 5 NOTE This affects only the ability of other users on your network to access your MCBs You are not required to turn on File and Printer Sharing in order to access networked MCBs as long as tho
110. eral information about the library editor that will be of use LibE dit Gamma Library Editor should you need technical support Version 1 00 Copyright 2002 Advanced Measurement Technology Inc All Rights Reserved Fig 126 About LibEdit 7 3 TRANSLT The TRANSLT program TRANSLT EXE located in c Program Files MAESTRO translates several different text files to and from SPC or CHN files All operation is controlled from the command line The command line is TRANSLT type inname type outname w nc col n ni nh i where type chn The inname file is in CHN format spc The inname file is in SPC format txt The inname file is in ASCII text format The default is based on the filename extension and the i switch Both chn and spc cannot be used together inname The input spectrum file no default default extension is spc If the input file is a TXT file it must contain the live and real time in the following format Real Time 240 Live Time 120 Both values are in seconds The header information in the txt file will be converted and stored in the SPC file if it is in the correct format The correct format for the TXT input file is the same as the TXT format created as the output file 155 MAESTRO 32 V6 A65 B32 type outname ne col n ni nh An example is chn The outname file is in CHN format spc The outname file is in SPC format txt The outname fil
111. ergy were processed by the spectrometer The corrected spectrum gives the best estimate of the total counts that would have been in the peak if the system were free of dead time effects The uncertainty spectrum can be used to calculate the counting uncertainty channel by channel in the corrected spectrum NOTE When the spectrometer is placed in ZDT mode the throughput of the instrument is reduced somewhat as extra processing must be done on the spectrum therefore if the 81 MAESTRO 32 V6 A65 B32 gamma ray flux is not changing as a function of time but absolute highest throughput is desirable you might wish to store only the LTC spectrum in the DSPEC Plus memory When ZDT counting is enabled in mode 0 ZDT Mode field set to NORM_CORR on the ADC tab the two spectra stored are the LTC spectrum live time and real time with dead time losses and the spectrum corrected for the dead time losses real time only Unfortunately in the analysis of the ZDT spectrum the uncertainty of the measurement cannot be determined using either spectrum In the second ZDT mode ZDT Mode field set to CORR_ERR on the ADC tab the estimation of the statistical uncertainty is stored in place of the LTC spectrum and is referred to as the error spectrum ERR In this mode the corrected spectrum is used to measure the counts in a peak and the error spectrum is used to determine the uncertainty of the measurement made in the corrected spectrum Table 1 s
112. es ROI Display ml Marker 3 009 566 42 keV 5 Cnts Next library match Eu 152 at 566 42 0 00 c tos tos AJ Plalofa 2 digiDART s n 241 m Pulse Ht Analysis Start 1 17 52 PM 19 May 99 Real 172 82 Live 167 40 Dead EA i Preset Limits Live 300 00 Beak rite rick Mda 1 0 cA sl ROI at l Peak ial l Library 0RTEC 11 40 51 AM Tue O9Jan 01 Fig 98 Isotope Markers Expanded View 4 6 11 Preferences This displays the options available for selecting the screen colors and spectrum display options The submenu is shown in Fig 99 4 6 11 1 Points Fill ROT Fill All Use these functions to select the histogram display mode for both spectrum windows In Points mode the data are displayed as points or pixels on the screen in the colors chosen for Foreground and ROI under Display Preferences Spectrum Colors see Section 4 6 11 2 102 Points Fill BOI e Fill All Spectrum Colors Peak Info Font Color Fig 99 Display Preferences Submenu 3 MENU COMMANDS In Fill ROI mode the unmarked regions of the spectrum are displayed as points while the ROIs are filled from the baseline to the data point with the ROI spectrum color In Fill All mode all the data points are filled from the baseline to the data point with the Foreground and ROI a spectrum colors ea E Figure 100 shows a comparison of the three display modes N
113. esistive Feedback preamplifier operation Your choice will depend on the preamplifier supplied with the type of germanium detector being used Optimize The digiDART is equipped with both automatic pole zero logic and automatic flattop logic The Start Auto optimization button uses these features to automatically choose the best pole 60 3 MENU COMMANDS zero and flattop tilt settings Note that if you selected Transistor Reset as the Preamplifier Type for this digiDART the Start Auto button does not perform the pole zero As with any system the digiDART should be optimized any time the detector is replaced or if the flattop width is changed For optimization to take place the digiDART must be processing pulses The detector should be connected in its final configuration before optimizing is started There should be a radioactive source near the detector so that the count rate causes a dead time of 5 Dead time is displayed on the digiDART front panel and on the Status Sidebar during data acquisition Select either the Resistive Feedback or Transistor Reset option and click on Start Auto The optimize command is sent to the digiDART at this time and if the digiDART is able to start the operation a series of short beeps sounds to indicate that optimization is in progress When optimizing is complete the beeping stops During optimization pole zeroes are performed for several rise time values and the digiDART is cycled through all
114. estore data which does not match the Detector configuration Calibration per channel wrong Error when trying to calibrate spectrum arising whenever the calibration slope would be 0 negative or greater than 100 units per channel Can t Find Any More ROIs Attempting to index to the next ROI in a direction for which no more ROIs can be located Can t load read library file Attempt to open or read the library file resulted in some kind of file I O error usually because the file doesn t exist but also possibly because the disk is defective Can t run protected mode application in real mode The Windows Error 18 was detected 165 MAESTRO 32 V6 A65 B32 Can t run second instance of this program The Windows Error 16 was detected This is due to using non shareable DLLs Can t get valid spectrum data The system could not supply valid data Detector communication failure most likely resulting from a timeout the Detector failed to respond within a reasonable period of time Command was ignored The MCB ignored the command This might be a valid response depending on the MCB type Could not properly fit the peak Function requiring a fitted peak could not obtain an acceptable peak probably because of too few counts too narrow or non Gaussian peak shape or bad statistics such as calculated sigma squared less than zero Couldn t get background subtracted ROI A function requiring a background subtracted RO
115. ev 334221 881 3 MENU COMMANDS Detector 65537 ACQ 07 Jun 91 at 0 37 33 RT 4219 8 LT 3600 0 No detector description was entered Mixed gamma Marinelli on endcap of P40268A ROI RANGE keV GROSS NET CENTROID FWHM 57 12 61 64 224820 123784 714 59 40 85 70 90 22 449680 334221 881 87 89 119 62 124 14 310370 223053 746 121 91 LIBRARY keV Bq No close library match No close library match No close library match No close library match No close library match No close library match No close library match No close library match No close library match 93 93 95 97 00 02 09 20 39 133 138 52 101242 29253 552 136 33 163 167 91 251299 176085 681 165 70 252 257 39 62742 7728 486 254 90 276 281 29 67265 21006 462 278 98 388 394 02 217548 177819 597 391 48 658 667 62 646572 590536 1032 661 39 WHDIHUOARWNEH HHHHHPOo000 NPRPPRPPPHPES Fig 38 Column Style ROI Report 4 1 7 2 Print to display Figures 39 and 40 show the ROI Report displayed on screen in Column and Paragraph style Remember that this report includes only the ROIs currently displayed in the Expanded Spectrum View A Detector 12592 ACO 07 Jun 1991 at 10 37 33 RT 4219 8 IT 3600 0 122 Mixed gamma marinelli on endcap of P40268 ROI RANGE keV GROSS NET CENTROID FWHM SI LIBRARY keV 1 729 00 737 00 228412 45536 370 733 00 21 07 0 79 No close library 2 818 00 826 00 48527 5571 164 822 00 6 13 2 38 No close library
116. eypad lt gt and Keypad lt gt respectively duplicate the Zoom In and Zoom Out Toolbar buttons and Display menu commands The lt F5 gt lt F6 gt and lt gt lt t gt keys change the vertical scale by a factor of two without changing the horizontal scale The lt F7 gt lt F8 gt and keyboard lt gt lt gt keys change the horizontal scale by a factor of two without changing the vertical scale Depending on the expansion or overall size of the spectrum all or part of the selected spectrum can be shown in the expanded view Therefore the number of channels might be larger than the horizontal size of the window as measured in pixels In this case where the number of channels shown exceeds the window size all of the channels cannot be represented by exactly one pixel dot Instead the channels are grouped together and the vertical displacement corresponding to the maximum channel in each group is displayed This maintains a meaningful representation of the relative peak heights in the spectrum For a more precise representation of the peak shapes displaying all available data i e where each pixel corresponds to exactly one channel the scale should be expanded until the number of channels is less than or equal to the size of the window Note that the marker can be moved by no less than one pixel or one channel whichever is greater at a time In the scenario described above where there are many more memory channels being represen
117. f a particular File Type click on the desired file type to highlight it then click on Modify This will open a standard file recall dialog Choose a new path and click on Open When all path changes have been completed click on OK to use them or Cancel to retain the previous settings File Settings El Aersensossessasesessesesenioni File Types Location Start Up CAUSERA Context Files CAUSERACxtA Spectra CAUSERA ROI Files CAUSERA Libraries CAUSERA Job Files CAUSERA Reports CAUSERA Modify Fig 29 Directories Tab 4 1 2 Recall This function reads an ORTEC CHN or SPC spectrum file into a new buffer window It opens a standard Windows file open dialog Fig 30 allowing you to select the file to be recalled Note the Show Description checkbox on the lower left of the Recall Spectrum File dialog Use this to display the sample description format and spectrum size of each file without having to open it 33 MAESTRO 32 V6 A65 B32 If the maximum eight buffer windows are currently open MAESTRO will ask if you wish to close the oldest buffer Answering No will cancel the recall operation and the oldest buffer will remain onscreen Answering Yes will close the oldest buffer and open a new buffer containing the recalled file If the oldest buffer contains data that have not been saved a warning dialog will first ask if the data should be saved Click on Yes to save and No to close without saving
118. f the commands Move necessary to create and edit library files X Close Alt F4 Show Master Library 7 2 1 Copying Nuclides From Library to Library Tura To copy nuclides from one library to another library for Restore example to make a working library from a master library Sort click on the Edit windows control menu and select Show Load Library Master Library This will open a standard file open dialog Save Library As Choose the desired file and click on Open Both libraries will Print Library be displayed side by side as illustrated in Fig 119 Greg Fig 118 Library Edit Dialog Control Menu 149 MAESTRO 32 V6 A65 B32 LibO Lib t Editing GyDemo Lib Se Rb 89 Xe 131M a Creation 4 13 88 10 58 044M p C109 Cadmium S 91 Xe 133M Af Edition 4 5 95 8 19 53 AM Half Life 436 Days i Di ci Uncertainty Zr 95 Cs 134 Nuclide Flags EE i Edit Cd109 Mo 99 Cs 138 Peaks To 99M La 140 Ru 103 Ba 140 Rh 106M Ba 139 Ag 108 Ce 139 Ag 110M Ce 141 Cd 109 Ce 143 Sn 113 Ce 144 5b 122 Pr 144 Sb 124 Nd 147 b 125 Eu 152 Sb 126 Eu 154 Te 131 Eu 155 Te 132 Gd 153 J 131 Tb 160 J 132 Yb 175 il MBA 6100E 2 22 16 8 6000E 3 24 94 1 7000E PIOIZZCCIAHAAHABEDIMMIOTDI4 IE Edit Cut J 133 Lu 177 a Insert Paste J 134 Hf 181 pies met 4135 Ta 192 Fig 119 The Master Library left and Library Editing Dialog right To copy a n
119. for Microsoft Windows 95 98 2000 NT B48 B32 which allows you to import 16 spectrum file formats including CHN and SPC and translate them into 10 formats 156 To start MAESTRO from the Windows Taskbar click on Start Programs MAESTRO 32 and MAESTRO for Windows see Fig 127 You can also start it by clicking on Start Run and entering a command line in the Run dialog with or without arguments as described below APPENDIX A STARTUP Le Accessories mm Programs r MS DOS Prompt x 9 Ev Windows Explorer Lx Favorites f MAESTRO 32 E Windows J beware gt a MCB Configuration BE Nuclide Library Editor Eh Settings Ya WinPlots A End Q x ye Run Log Off Ry Shut Down Fig 127 Starting MAESTRO A 1 Command Line Options The form of the command line for invoking MAESTRO is MCA32 exe P listname L file lib file job B All of the arguments are optional one or more can be omitted Thus at a minimum MAESTRO can be executed without any arguments at all in which case certain defaults apply for the Detector list and nuclide library as described below As shown there are three possible command line arguments P listname Optionally uses listname as the Detector pick list name The pick list name must be 5 characters or less If a pick list is not specified M32MCA is used by default The current pick list name is displayed above the Pick List column in
120. full scale values are shown on the Toolbar see Fig 96 This command is duplicated by Keypad lt gt the Toolbar s Zoom In button and Zoom In on the right mouse button menu 4 6 7 Zoom Out Zoom Out adjusts the horizontal and vertical scales in the Expanded Spectrum View to view a larger portion of the spectrum The vertical scale is doubled and the horizontal scale is increased by about 6 of the full horizontal scale This command is duplicated by Keypad lt gt the Toolbar s Zoom Out button and Zoom Out on the right mouse button menu 100 3 MENU COMMANDS 4 6 8 Center This function forces the marker to the center of the screen by shifting the spectrum without moving the marker from its current channel This function is only required when moving the marker with the mouse the keyboard functions for moving the marker automatically shift the spectrum to center the marker when the marker travels past the end of the current expanded display Center is duplicated by Keypad lt 5 gt and the Center button on the Toolbar 4 6 9 Full View This function sets the Expanded Spectrum View to the maximum number of channels in the spectrum the ADC conversion gain 4 6 10 Isotope Markers The isotope markers are used to locate other gamma rays of the same nuclide from the library when any one of the gamma rays from that nuclide is selected In this way you can easily see if the selected nuclide is present by comparing the spec
121. g along with any new instruments Existing previously configured before this upgrade instruments do not have to be powered on during this part of the installation procedure NOTE You can enable other device drivers later as described in Section 2 2 If you want other computers in a network to be able to use your MCBs leave the Allow other computers to use this computer s instruments marked so the MCB Server program will be installed Most users will leave this box marked for maximum flexibility NOTE If your PC uses Windows XP and you wish to use or share ORTEC MCBs across a network be sure to read Section 2 1 Click on Done If your PC is operating under Windows 2000 or XP the installation wizard will resume copying files MAESTRO 32 V6 A65 B32 Instrument Setup E E Instrument Families Please check all items in this USB based instruments list that are connected to or O Dual Port Memory plug in cards ISA slot installed in this computer O Dual Port Memory plug in cards PCI slot Click Done when you are O TRUMP PCI cards nati O DART or any other printer port based device O DSP Scint m ltem Description O microBASE Click on any item in the list O 585 60 or 585 65 to get more information 4 O Miniature MCA miniMCA 166 2 O Maca O digiDART RS232 O DSPEC jr R8232 Local Instrument list 1 GRAY_GC MCB 134 SN 177 V Allow other computers to use this computer s instrumen
122. ghput a EA A pece 0 520 70000 os oa 85000 06 83 MAESTRO 32 V6 A65 B32 The longest rise time shown in the table is 12 us even though some digital instruments can be set for rise times as long as 23 us If throughput is not an issue because all samples are low rate increasing the rise time beyond 12 us might achieve a small improvement in resolution For planar detectors such as ORTEC s GLP Si Li IGLET and IGLET X Series operating at longer rise times frequently gives improved resolution 4 3 Calculate The Calculate menu Fig 70 provides useful analytical tools for Calculate spectrum manipulation Smooth and Strip are only available in buffer Settings mode Peak Info and Sum are not available if the Detector is acquiring Calibration data Peak Search Peak Info 4 3 1 Settings Input Count Rate Sum This dialog shown in Fig 71 allows you to set the FW 1 x M and the Smooth peak search sensitivity factor Strip Fig 70 Calculate 4 3 1 1 x for FW 1 x M Menu This is the x factor used in the full width at 1 x maximum calculation in the Peak Info calculation for the ROI peak marked by the cursor This number is retained and used until changed The dialog prompts you to enter the x factor which is an integer from 2 to 99 Peak Info always prints the FWHM so an x of 2 is not needed 4 3 1 2 Sensitivity Factor Suspected peaks in a spectrum must pass a sensitivity Calculation Se
123. h the RECALL function usually because the file does not exist JOB Error 3 Unable to RUN non EXE file An attempt was made to execute a non executable file JOB Error 6 Unknown command An unrecognized command was found in a JOB file Check spelling JOB Error 5 Unknown error from MCBCIO An error occurred with the MCB communications but the error was not recognized Unable to strip Detector memory The stripping function must be performed in the buffer Warning 128 Warning 64 Warning 8 All three of the above messages are the result of Detector START or STOP warnings and are hardware dependent Warning Buffer was modified When the MAESTRO program is being closed this message appears if the buffer spectrum has been modified but not yet saved to disk This gives you the option of saving the buffer instead of losing it before closing the application 174 AND toad ae sten ween ae bee ee ake 23 CEG xg age he Be tad aaa RI 159 CHN A Sve WES AG AAA 28 159 A dk tek ane ee RI 159 JOB see also Job 119 159 EIB sila hacen Seta Gok oes 23 148 159 A RARE 159 RPL rate Sari an diastase eas cece IRA 159 DPC oe th Rae tad aaa ee eas eer nas 159 floating point 0 0 0 0 0 cee ee 28 MER tran SAS ee eet DASA 28 I sche ADATTO seeks Seti Sak 159 JOB loop counter 128 Accelerator keys sla pas tentata 109 keyboard map nononono unnn nananana 111 quick reference table
124. hat the MCB is unlocked Read Only means it is locked Status Figure 63 shows the Status tab Twenty one parameters are monitored at all times Use the droplists to select any six parameters to be displayed simultaneously on the Status tab normally these would be the six that are most important to you The items you select can be changed at any time Two types of status responses are displayed OK or ERR and a numeric value The state of health SOH parameters all respond with OK or ERR If the state is OK the parameter stayed within the set limits during the spectrum acquisition If the parameter varied from the nominal value by more 66 Amplifier Amplifer2 ADC Stabilizer HighVoltage Field Data About Status Presets MDA Preset Nuclide Report digiDART s n 241 Sample Calibration source 1714 Acquisition Start Time Access 11 17 51 Tuesday January 09 2001 Read Write Firmware Revision Serial Number Acquisition Mode DDAR 002 P23 PHA Fig 62 digiDART About Tab Properties for ORTEC SHOW1 MCB 131 Amplifier Amplifier2 ADC Stabilizer High Voltage Field Data About Status Presets MDA Preset Nuclide Report Detector State Of Health ERR Security Verification Error DIM 24 State Ot Heath DR DIM 124 State Ot Resti E DR Mia State OrHeath E OK TEEN DR Fig 63 digiDART Status Tab 3 MENU COMMANDS than the allowed limit
125. he ORSIM III can also be used to connect MCBs directly to the Ethernet MAESTRO 32 can control and display an almost unlimited number of Detectors either local or networked the limit depends on system resources These can be any mixture of the following types of units properly installed and hardware configured DSPEC Pro DSPEC jr 2 0 Detective Detective EX trans SPEC digiBASE microBASE DSP Scint digiDART DSPEC Plus DSPEC jr Models 916A 917 918A 919 920 921 926 919E 920E 921E 92X 92X II NOMAD Plus NOMAD MicroNOMAD OCTETE PC TRUMP Micro ACE DART DSPEC MatchMaker M CA MiniMCA 166 and other new modules MAESTRO 32 will correctly display and store a mixture of different sizes of spectra Multiple MAESTRO windows can be open at one time displaying Detectors buffers spectrum files from disk and data analyses The larger and higher resolution your monitor the more windows you can comfortably view Expanding the system for more Detectors as well as enabling more than one device on a Model 919 is easy When the system incorporates a Model 920 or OCTETE PC type MCB the system can also be expanded using the internal multiplexer router In the Model 920 or OCTETE PC the MCB memory is divided into segments so that each input has an equal share of the MCB memory the size of which matches the conversion gain or maximum channel number of the ADC Note that in the multiple
126. he ROI Del button on the Status Sidebar Keypad lt Del gt the lt Delete gt key and the Clear ROI Toolbar button See also Clear ROI on the right mouse button menu Section 4 8 9 97 MAESTRO 32 V6 A65 B32 4 5 6 Clear All This resets all the ROI bits in the displayed spectrum i e removes all ROI markings from the spectrum However it does not affect the ROI status of Mark Unmark Off 4 5 7 Save File This allows you to save to disk a table of the channel numbers for the current spectrum that have the ROI set The contents of the spectrum are not changed Selecting Save File opens a standard file Save ROI File open dialog Fig 92 Enter the File name Savein E User sila The ROI file extension is recommended i 2 Tmpl fa NT1089ag roi 2 cit A waterford a N30201b roi and is used by default An invalid or null a e ci filename will abort the Save operation Mga a loax r0i a Test ci L pins sa Mmebdem1 roi an Testxxxx roi f I Scx sa Mmebdemo roi If the file already exists the system will display a warning message asking if you det Fil want to overwrite the data in the existing moe file or cancel the save Click on OK to Save as YB ci Fes 2 __caree overwrite the file Fig 92 Save ROI File Dialog 4 5 8 Recall File Recall File sets the ROIs in the buffer or Recall ROI File 71x active Detector to the table in the disk file Lookin Que e E
127. he units need only be entered once since they are the same for all nuclides in the table Library Add To use the library to aid in the definition select the nuclide from the library nuclide drop down list Now select the gamma ray energy from the Energy drop down list This defines what gamma ray to use Now Press the Select from Lib button in the Report section This will update all the entries in this section and show as a yellow band the region 74 3 MENU COMMANDS to be used in both the expanded spectrum and the full window Now click on Add New to add this nuclide to the list Edit To change any of the current nuclides select the nuclide in the list use the scroll bars if needed This will show the current settings for this nuclide Make any changes needed Any or all of the entries can be changed When finished with the changes click on Update Delete To remove an entry select the entry and press Delete When you close the Properties dialog all the values entered are written to the digiDART and are used when you view the Nuclide Report on the digiDART display 4 2 7 3 InSight Mode The InSight display Fig 67 shows the actual sampled waveform in the digital processing units on a reference graticule The Properties dialog remains active and can be used to change settings while viewing the pulses As none of the traditional analog signals are available in digital MCBs this mode is the only way to display the equival
128. her the intercept or gain can affect the positions of all the peaks in the spectrum When used with the zero stabilizer both the zero intercept and the gain slope will be monitored to keep all the peaks in the spectrum stabilized The zero stabilization and gain stabilization are separate functions in the MCB but both will affect the position of the peaks in the spectrum The stabilization operates by keeping a peak centered in an ROI you have defined The ROI should be made symmetrically about the center of a peak with reasonably good count rate in the higher channels of the spectrum The ROI should be about twice the FWHM of the peak If the region is too large counts not in the peak will have an effect on the stabilization The ROI can be cleared after the Peak command so that peak count preset can be used on another peak The coarse and fine gains should be set to the desired values both stabilizers initialized and the pole zero triggered before setting either stabilization peak For example on the 92X this is done with the Acquire MCB Properties dialog on the Model 919 it is done externally The Initialize dialog button sets the gain on the stabilization amplifier to its midpoint that is halfway between minimum gain and maximum gain This should be done before selecting the ROI for the peak because the initialization might move the peak in the spectrum and because it ensures that the maximum range is available for the stabilization p
129. hich are appropriate to the actual counting geometry If NucCoef is set to 1 you will get peak count rate on the display LiveTime is the current live time NetCounts is computed with the following equation NetCounts GrossCounts Background GrossCounts is the sum of the counts in the ROI excluding the first and last 3 channels of the ROI Background is AvgCount first 3 chan AvgCount last 3 chan 2 Background ROIWidth 73 MAESTRO 32 V6 A65 B32 ROIWidth is ROIWidth EndChannel StartChannel 1 6 2 Uncertainty Uncertainty in percent is calculated as follows ROIWidth Uncertainty Ni ee A 100 NetCounts GrossCounts Background 3 Peak Peak is the position of the maximum count and is computed with the following equation Peak MaximumROIChan EnergySlope EnergyIntercept where MaximumROIChan is the channel in the ROI with the most counts If there are no data the center channel of the ROI is used EnergySlope and EnergyIntercept are the energy calibration values as entered on the digiDART keypad or by software If the values are not present the result is given in channels Add New Manual Add Nuclides can be added to the list using the library to assist in the region definition or manually To add a nuclide manually enter the nuclide name ROI start and end channels multiplicative factor and units in the Report section Now press Add New to add this nuclide to the list T
130. his section provides a quick reference to the JOB commands for more detailed information see Section 6 5 In the following descriptions a variable filename or text is enclosed in and a variable number is enclosed in lt gt anything enclosed in square brackets is optional ASK_PASSWORD Asks for password used to lock Detectors BEEP lt freq gt lt duration gt Produces an audible sound of lt freq gt Hz lasting lt duration gt milliseconds BEEP ID A numerical ID is given based on a desired system event BEEP String String can be a wav file or any event defined in the Registry CALL file job Executes another Job file as a subroutine CHANGE SAMPLE Provides sample changer hardware handshake CLEAR Clears the data and descriptors in the active Detector DESCRIBE_SAMPLE text Enters the text into the sample description to be saved with the spectrum EXPORT filename This command executes the Export function with the filename specified FILL_BUFFER Transfers the data from the active Detector to the buffer 121 MAESTRO 32 V6 A65 B32 IMPORT filename This command executes the Import function with the filename specified LOAD LIBRARY filename extension Loads a nuclide library LOCK Pwd Name This command locks the current Detector using Pwd as the password If the optional Name parameter is missing the Locked name defaults to J
131. hods 50 309 320 1967 86 3 MENU COMMANDS 4 3 4 Peak Info This command displays one of the following for the marker in an ROI Ifthe spectrum is not calibrated the channel centroid FWHM FW1 xM all in channels gross area net area and net area uncertainty are displayed for the ROI peak marked by the marker e Ifthe spectrum is calibrated the channel centroid FWHM FW1 xM in channels and calibration units e g energy library best match energy and activity gross area net area and net area uncertainty are displayed for the ROI peak marked by the marker This information is displayed beneath the Spectrum Window on the Supplementary Information Line and or in a text box inside the Expanded Spectrum View at the top of the peak Both displays are illustrated in Fig 75 To remove the text press lt Esc gt The program subtracts the calculated background channel by channel and attempts a least squares fit of a Gaussian function to the remaining data If unsuccessful it displays Could Not Properly Fit id Marker 4 074 4 074 00 keV 64 255 Cnts Peak If successful the centroid is based on the Peak 4073 43 4073 43 keV No close library match fitted function The reported widths are linearly Gross Area 634163 Net Area 600668 873 interpolated between the background subtracted Fig 75 Peak Info Beneath Marker and at Top channels of Peak The background on the low channel side of the peak i
132. hows which spectra are collected in the three possible DSPEC Plus modes For example if the area of a peak is measured in the corrected spectrum by summing channels 1000 to 1100 the variance of the measurement can be determined by summing the counts in channels 1000 to 1100 in the error spectrum Or shown another way the counts in channel i can be expressed as N i y V i with a 1 sigma confidence limit where N is the corrected spectral data and V is the variance error spectral data Table 1 DSPEC Plus ZDT Modes Mode Uncorrected ZDT Corrected ZDT Error Spectrum Spectrum Spectrum ZDT Disabled Yes No No ZDT LTC Mode Yes Yes No ZDT ERR Mode No Yes Yes 4 2 7 7 Setting the Rise Time in Digital MCBs To achieve the best results for your application when using a digital spectrometer such as the DSPEC Pro DSPEC jr 2 0 digiDART DSPEC Plus or DSPEC we recommend that you set the rise time of the pulses being processed by the digital filter to the minimum value for the resolution needed The pulse rise time and also fall time is based on the time required for each pulse to reach its peak value This peaking time is about twice that indicated by the conventional time constants displayed on the front panel of commercial analog amplifiers For example germanium detectors 82 A _ _ ao a N Throughput cps thousands E a N 3 MENU COMMANDS 1 5 9 15 20 30 50 75 95 105 120 130 140 Count Rate kcps Fig 69
133. ht Detector windows and eight buffer windows simultaneously MAESTRO 32 uses the network features of Windows so you can use and control ORTEC MCB hardware anywhere on the network 1 2 About This User Manual This manual is intended to be used in conjunction with the ORTEC MCB CONNECTIONS 32 Hardware Property Dialogs Manual Part No 931001 hereinafter called the MCB Properties manual included with MAESTRO The hardware property dialogs manual contains the hardware setup information for our CONNECTIONS compliant MCBs these dialogs are discussed in more detail in Section 4 2 7 In addition it provides detailed instructions on installing CONNECTIONS software building the Master Instrument List of all ORTEC MCBs connected to your PC locally and across a network and selecting the proper protocol for communicating with networked ORTEC instruments 1 3 PC Requirements MAESTRO 32 A65 B32 is designed for use on PCs that run Microsoft Windows 98 SE 2000 Pro and XP Pro For PCs with a memory mapped MCB interface no other interface can use memory mapped into page D of the PC memory map see the MCB Properties manual Data can be saved or retrieved from any number of removable or fixed drives 1 INTRODUCTION 1 4 Detectors Front end acquisition hardware supported includes ORTEC s CONNECTIONS 32 compliant MCBs interfaced to the computer with an appropriate adapter card and cable or using the printer port adapter In a network t
134. i 4 1 6 2 MAESTRO 32 V6 vs V5 3 5 oso dante ieee os Sass PORE ai 4 1 63 MAESTROS32 VIII VS VIS Cts Pet ck eed ee fil pinta Oe da avea 4 1 6 4 MAESTRO 32 V5 3 VS V Li 4 INS TALDING MAESTRO 32 tools E de e 7 2 1 If You Have Windows XP Service Pack 2 and Wish to Share Your Local ORTEC MCBS Actoss a Network ad id keh be AA irta 10 2 2 Enabling Additional ORTEC Device Drivers 0 cece eee ee eee 11 GETTING STARTED urnas sa ie Eds 13 del Stra A A TN 13 SZ SCreeN Features a Ns a de rele re 13 5 3 PECULIAR A AA 16 3A ANS Toolbar dsd ale ds a 17 gt Using the Mouse uw ces orn eee eee erede 19 3 5 1 Moving the Marker with the Mouse ice 2 264404 whe oak a 20 3 5 2 The Right Mouse Button Menu 0 5 66 os ea a 20 3 5 3 Using the Rubber Rectangle a Clisi e aca 20 3 5 4 Sizing and Moving the Full Spectrum View 22 3 6 BUMONS and BOXES Siig Ae elo oe taal Se aw biella Sha 22 3 7 Opening Files with Drag and Drop Li 23 J Ox ANSSOCIA ed PICS erie oe eerukt os eee aon oh ye lat OeeRed eeor eta E we eRe dd 24 3 9 EIA et o E A Sie Ua ate Pat ean et tek 24 MENU COMMANDS 00 e don dia dh ie ected Wace smh ahaa ate le ew eda re ated 25 ALE siae RL ae 27 AE SUMING puntal a aerea telato etnias 27 4 1 1 1 General dla eles ap nan 27 AANA A T E E Uae Saree ase ee ek 28 AELUDICHIS Li ache dee linate eke aes tue alla 29 Initial Directory a is td 30 RUTOPHONs sii dinette datore es 30 MAESTRO 32 V6
135. ialog shown 3 MENU COMMANDS Services Job Control Library Select Peak Sample Description Select File Lock Unlock Detector Edit Detector List Fig 82 The Library Submenu Library List zix Library GyDemo Lib Fig 83 Peak List Dialog Box Load Library File Look in a User ex E mu File name Default Lib Files of type Maestro Library y Cancel Fig 84 The Load Library File Dialog The old MAESTRO library format MCA is no longer supported 93 MAESTRO 32 V6 A65 B32 in Fig 84 Either LIB type or MDB type libraries can be used When a library is loaded and if the spectrum is calibrated the Library indexing buttons on the Status Sidebar are enabled black 4 4 3 Sample Description This command opens the dialog Sample Description IX shown in Fig 85 for reading editing Or entering the Sample Mixed gamma marinelli on endcap of P40268A a Description of the displayed pesa spectrum This description can Fig 85 Sample Description Entry be up to 128 characters in length and automatically accompanies the spectrum when it is subsequently copied or saved to a file This description also appears in the title bar at the top of the window while the spectrum is displayed For files in the cHN format only the first 63 characters are saved in the spectrum file 4 4 4 Lock Unlock Detector This facility enables you to protect
136. iles MAESTRO Current Directory This is the current default directory for Windows Run Options These three radio buttons Minimized Maximized and Normal Window are used to select the window for the program If the program does not have any user dialogs any option can be selected If the program needs user inputs Normal Window should be selected 30 4 1 1 3 Import Click on the Import tab to display the dialog shown in Fig 26 The program to be executed and the default file extension when the Import function is selected can then be specified You can select any program that can accept the spectrum filename on the command line Use the Browse button to auto matically select the complete proper path for the program Arguments The arguments to the program can be specified as directly entered character strings or you can select from the list 3 MENU COMMANDS HE File Settings General Export Import Directories Import Program CMAEAMSPEDAC Spe_aceexe 00 Browse Arguments S FulPath ShonBaselchn gt Initial Directory LD gt Default Txt Run Options Maximized C Normal Window Minimized i Cancel Fig 26 Import Tab of macros shown in Fig 27 The list is displayed by clicking on the arrow button to the right of the Arguments field The entries macros or direct must be separated by spaces to be read as separate arguments File Path Name This will insert the co
137. imize button The Rise Time value is for both the rise and fall times thus changing the rise time has the effect of spreading or narrowing the quasi trapezoid symmetrically The Flattop controls adjust the top of the quasi trapezoid The Width adjusts the extent of the flattop from 0 3 to 2 4 us The Tilt adjustment varies the flatness of this section slightly The Tilt can be positive or negative Choosing a positive value results in a flattop that slopes downward choosing a negative value gives an upward slope Alternatively Optimize can set the tilt value automatically This value is normally the best for resolution but it can be changed on this dialog and in the InSight mode to accommodate particular throughput resolution tradeoffs The Optimize button also automatically adjusts the pole zero setting 4 2 7 4 Gain Stabilization You can control the gain stabilizer on Detectors so equipped The gain stabilizer requires a peak in the spectrum to monitor the changes in the gain of the system amplifier The gain stabilizer controls the amplification factor of a separate amplifier so that the peak will be maintained in its original position The input pulse height to channel number relationship is 78 3 MENU COMMANDS Channel number Intercept Gain pulse height where Intercept The channel number of the zero height input pulse Gain The relation between pulse height and channel number slope of the curve Changes in eit
138. indows to make another window the active window click on its entry in the list This is especially useful if one window has been enlarged and has obscured other windows 104 iii Window Cascade Tile Horizontally Tile Vertically Arrange Icons v Auto Arrange Multiple Windows 1 Buffer 1 Buffer 2 Mob WBC Nal 2 v 3Mcb WEBC Nal 3 Fig 103 Window Menu 3 MENU COMMANDS 4 8 Right Mouse Button Menu Figure 104 shows the right mouse button menu To open it position the Start mouse pointer anywhere in the desired spectrum window and click the Stop right mouse button then use the left mouse button to select from its list Clear ofco ands Copy to Buffer Zoom In 4 8 1 Start aa Undo Zoom In This initiates data collection in the selected Detector Any warnings Mark ROI arising from problems detected at the hardware level will appear in a Clear ROI message box or on the Supplemental Information Line at the bottom of Peak Info the display The Detector can also be started with the lt Alt 1 gt Input Count Rate accelerator the Start Acquisition button on the Toolbar or the Start Sa command on the right mouse button menu If the Detector is already MCB Properties started or if a buffer window is active this entry is grayed Fig 104 Right Mouse Button 4 8 2 Stop Menu for Spectra The Stop command is available only in Detector windows and terminates data collection in the active Detec
139. indows Explorer will start WINPLOTS and display that spectrum Fig 106 Starting WINPLOTS The main WINPLOTS display is shown in Fig 107 143 MAESTRO 32 V6 A65 B32 yu WinPlots N71calb spc A ES File Options Help N71cab bed Gemma callbraion source onerdcap de dl art pm Mar th HAAN Aaa dba 0 Aquired 15Wow 1562 120551 PM Real Time 101413655 Uw Time 5423 45 5 File CAUSERIMT icab spc Charels 16384 Delecio 4125 Recall a spectrum file for plotting 02 Jun 97 9 57 09 AM Fig 107 The Main WINPLOTS Display 7 1 1 File Figure 108 shows the File menu These menu items select the spectrum and ROI to be displayed read and write the settings file and actually Recall Spectrum make the plot Recall ROL Print Plot Once a file has been selected using the Recall Spectrum function Recall Settings see the file recall dialog shown in Fig 109 it is automatically Save Settings As previewed using the current settings This is the exact plot that will be Exit Abra ae There are minor differences between display and printer fonts Fig 108 The File Menu and colors The sample description format and number of channels are shown at the bottom of the dialog to aid in selecting the correct file 144 Recall a spectrum file for plotting HEI Look in 3 User al c E E Mantlel spc Mcbdemo spe Mk40 spc Yu nal 0030 Spe uu Qcdl gmw spc te Test2job s Mna22
140. ing Mga job if Terminate Job Fig 81 Dialog if JOB is Already Running condition a message box briefly explaining the cause of the error will be displayed More details on the error can be found by cross referencing with the error message directory in Appendix C 92 4 4 2 Library The commands on this submenu Fig 82 allow you to select the nuclide library to be used and display the peaks list MAESTRO V6 uses the GammaVision Library Editor supplied see Section 7 2 for a detailed discussion so you can now use LIB or MDB type NuclideNavigator libraries 4 4 2 1 Select Peak This opens a window containing a list of the library peaks in energy order Fig 83 This list shows the nuclide name energy gammas 100 disintegrations and half life Clicking on any field moves the marker line to that energy in the spectrum The Library List can be sorted by nuclide energy percent or half life by clicking on the desired column header 4 4 2 2 Select File A nuclide library is used by the Peak Search and report functions for semi quantitative identification and activity calculations for spectral components according to calibrated peak energy At startup MAESTRO automatically attempts to load the library last loaded This working library stays resident in memory after it has been loaded Thereafter it can be replaced at any time using the Select File command which displays the d
141. ing courses and access to our Global Service Center 4 2 Acquire The Acquire menu is shown in Fig 44 Access to the various Acquire functions depends on whether the a Detector or buffer window is Start Alt 1 currently active For example if a buffer window is active Clear Stop Alt 2 is the only active Detector control and MCB Properties is read Clear Ak 3 only If a Detector window is active MCB Properties is Grada a interactive The Download Spectra and View ZDT Corrected Download Spectra commands are available only for supported hardware which is T listed in the discussion for each of these functions MCB Properties Fig 44 Acquire Menu 42 3 MENU COMMANDS NOTE Insome cases a Detector option might be grayed because it is disabled for the current Detector while it might still be valid for some other Detector in the system or for this Detector under different conditions 4 2 1 Start This initiates data collection in the selected Detector Any warnings arising from problems detected at the hardware level will appear in a message box or on the Supplemental Information Line at the bottom of the display The Detector can also be started with the lt Alt 1 gt accelerator the Start Acquisition button on the Toolbar or the Start command on the right mouse button menu If the Detector is already started or if a buffer is the active window this entry is grayed 4 2 2 Stop Stop terminates data colle
142. ing the Windows drag and drop feature The file types are spectra SPC AN1 CHN library LIB and region of interest ROI The drag and drop file is handled the same as a read recall operation for that type of file For spectra this means a buffer window is opened the file is loaded into it and the spectrum is displayed Library files become the working library files The ROIs saved in an ROI file are read and the regions set 23 MAESTRO 32 V6 A65 B32 To drag and drop open MAESTRO and Windows Explorer and display both together on the screen Locate a file in Explorer such as DEMO CHN Now click and hold the left mouse button move the mouse along with the file ghost to the MAESTRO window and release the mouse button The spectrum file will open as if you had recalled it from within MAESTRO 3 8 Associated Files When MAESTRO is installed it registers the spectrum files in Windows so they can be opened from Windows Explorer by double clicking on the filename The spectrum files are displayed in WINPLOTS These files are marked with a spectrum icon 44 in the Explorer display The JOB files 5 are also registered and open in Windows Notepad 3 9 Editing Many of the text entry fields in the MAESTRO dialogs support the Windows editing functions on the right mouse button menu Use these functions to copy text from field to field with ease as well as from program to program Position the mouse pointe
143. ing when the sum of all counts in all channels for this Detector marked with an ROI reaches this value This has no function if no ROIs are marked in the Detector The Uncertainty preset stops acquisition when the statistical or counting uncertainty of a user selected net peak reaches the value you have entered Enter the Preset in value as percent uncertainty at 1 sigma of the net peak area The range is from 99 to 0 1 in 0 1 steps You have complete control over the selected peak region The region must be at least 7 channels wide with 3 channels of background on each side of the peak As the uncertainty is calculated approximately every 30 seconds the uncertainty achieved for a high count rate sample may be lower than the preset value Use the Start Channel and Width fields to enter the channel limits directly or click on Suggest Region If the marker is positioned in an ROI around the peak of interest Suggest Region reads the limits of the ROI with the marker and display those limits in the Start Chan and Width fields The ROI can be cleared after the preset is entered without affecting the uncertainty calculation If the marker is not positioned in an ROI the start channel is 1 5 times the FWHM below the marker channel and the width is 3 times the FWHM The net peak area and statistical uncertainty are calculated in the same manner as for the MAESTRO Peak Info command Marking the Overflow checkbox terminates acquisition when data in an
144. instruments accessible within MAESTRO 32 see Chapter 2 page 7 and the accompanying ORTEC MCB CONNECTIONS 32 Hardware Property Dialogs Manual 1 INTRODUCTION Welcome to MAESTRO 32 Version 6 This latest release extends the capabilities of the world s most popular multichannel analyzer MCA emulation software with the addition of a command that gives you the option of using a multi detector interface that lets you view up eight MCA windows and eight buffer windows at a time or using the classic single window interface In addition the revised installation wizard provides more guidance in selecting the instrument drivers you will need MAESTRO 32 V6 uses the GammaVision library editor so you can now create modify and use both LIB and mpB format NuclideNavigator libraries This release of MAESTRO also supports our new DSPEC Pro DSPEC jr 2 0 Detective Detective EX and trans SPEC instruments 1 1 MCA Emulation An MCA in its most basic form is an instrument that sorts and counts events in real time This sorting is based on some characteristic of these events and the events are grouped together into bins for counting purposes called channels The most common type of multichannel analysis and the one which is of greatest interest to nuclear spectroscopists is pulse height analysis PHA PHA events are signal pulses originating from a detector The characteristic of interest is the pulse height or voltage
145. intf DATA COLLECTED AT 2u 2u 2u ON 2u s 4uin hour minute second day month year printf STARTING CHANNEL d n chan offset printf NUMBER OF CHANNELS d n num chans RR RRR ke de d KKK KKK KEE KK RK KEK KKK e de ke ke de e e KKK KK ke ke ke ke kekk kk f Channel Data Output channel data from CHN file VETTTTTTTTTTTTTETTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 9 printf CHANNEL DATA n for count 0 count lt num chans countt if count 6 0 6 channels per line printf n 7d count with channel number fread amp chan data sizeof chan data 1 f pointer printf 11d chan data fcloseall exit 0 APPENDIX C ERROR MESSAGES Errors are displayed in warning boxes or in some cases in the information line at the bottom of the window Acquisition failure For some reason an acquisition function failed from a JoB file Already started Detector already active when a START acquisition command was issued Altering Detector data Restoring data to a Detector would destroy the data already there Amplifier not pole zeroed Warning from a 92X indicating that the Detector should be pole zeroed Attempt to dynamically link to a task The Windows Error 5 was detected Auto PZ aborted The 92X Auto PZ function was aborted by lt Esc gt Buffer and Detector not same size Buffer and Detector memory incompatible Error when trying to r
146. is SET DETECTOR 1 SET PRESET CLEAR SET PRESET LIVE 1000 LOOP 10 CLEAR START WAIT FILL BUFFER SET DETECTOR 0 DESCRIBE SAMPLE This is sample SAVE DECAY CHN RECALL ROI DECAYPK ROI 128 6 JOB FILES REPORT PRN SET DETECTOR 1 END_LOOP Spooling the report might take some time To overlap the data collection with the analysis the logic of the JoB file needs to be modified to restart the acquisition after the data have been moved to the buffer NOTE All of the analysis is performed on the buffer spectrum so the Detector spectrum can be erased and the next one started Insert CLEAR and START after FILL BUFFER as shown here SET DETECTOR 1 SET_PRESET_CLEAR SET_PRESET_LIVE 1000 CLEAR START LOOP 10 WAIT FILL BUFFER CLEAR START SET DETECTOR 0 DESCRIBE SAMPLE This is sample SAVE DECAY CHN RECALL ROI DECAYPK ROI REPORT PRN SET DETECTOR 1 END_LOOP These few examples have shown some of the possibilities of the JOB language in MAESTRO 6 5 JOB Command Details ASK_PASSWORD This is used to define the password and owner to be used in the Jos file Passwords can be used to lock an unlocked detector unlock and use one that is locked or lock one for the duration of the job and then unlock it The actual lock unlock is done with LOCK and UNLOCK respectively This command is to set the internal password variable PASSWORD to the user in
147. istive Feedback preamplifier operation Your choice will depend on the preamplifier supplied with the germanium detector being used Optimize The DSPEC Pro is equipped with both automatic pole zero logic and automatic flattop logic The Start Auto optimize button uses these features to automatically choose the best pole zero and flattop tilt settings Note that if you selected Transistor Reset as the Preamplifier Type for this DSPEC Pro the optimize button does not perform the pole zero As with any system the DSPEC Pro should be optimized any time the detector is replaced or if the flattop width is changed For optimization to take place the DSPEC Pro must be processing pulses The detector should be connected in its final configuration before optimizing is started There should be a radioactive source near the detector so that the count rate causes a dead time of 5 Dead time is displayed on the DSPEC Pro front panel and on the Status Sidebar during data acquisition Select either the Resistive Feedback or Transistor Reset option and click on Start Auto The optimize command is sent to the DSPEC Pro at this time and if the DSPEC Pro is able to start the operation a series of short beeps sounds to indicate that optimization is in progress When optimizing is complete the beeping stops During optimization pole zeroes are performed for several rise time values and the DSPEC Pro is cycled through all the rise time values for the de
148. it nuclide This will open the Edit Library Nuclide dialog Fig 122 The Nuclide Name Half Life Uncertainty and Nuclide Flags will already be listed The Uncertainty is a single number that represents the uncertainty 2 sigma or 95 confidence level in the values entered for this nuclide It is added in quadrature to form the total uncertainty on the final report The Uncertainty value should be taken from the nuclear 7 UTILITIES Insert Library Nuclide x Nuclide Name Half Life fo Days Uncertainty 0 0000 Nuclide Flags T Thermal Neutron Activation MT Fast Neutron Activation F I Fission Product I TT Naturally Occurring Isotope N T Photon Reaction P l Charged Particle Reaction 0 TT No MDA Calculation M TT Activity Not in Total 8 Cancel Fig 120 Insert a Nuclide into a Library Edit Ed 104 Fig 121 Ready to Edit this Nuclide data sheet for this nuclide The default is zero but 2 is a realistic number The first six Nuclide Flags are used to show how the nuclide was produced For example Thermal Neutron Activation T indicates that this nuclide is produced when the parent nuclide absorbs a slow neutron This can be helpful in organizing reports by nuclide category More than one flag can be checked Libraries produced with NuclideNavigator II or later will already have these flags set For other libraries consult a reference for the proper settings The N
149. its display features discusses the role of the mouse and keyboard covers the use of the Toolbar and sidebars discusses how to change to different disk drives and folders and shows how to use additional features such as Help 3 1 Startup To start MAESTRO click on Start on the Windows Taskbar then on Programs MAESTRO 32 and MAESTRO for Windows see Fig 6 You can also start MAESTRO by clicking on Start Run and entering a command line in the Run dialog with or without arguments as described in Section A 1 E Accessories Programs y MS DOS Prompt 3 AY Windows Explorer _ Favorites MAESTRO 32 MAESTRO for Windows Sy Documents gt MCB Configuration BE Nuclide Library Editor Eh Settings Ya WinPlots 1 N End Q ts ye Run Log Off T Shut Down A Fig 6 Starting MAESTRO 3 2 Screen Features Figure 7 shows MAESTRO s principal screen features 1 Title bar showing the program name and the source of the currently active spectrum window There is also a title bar on each of the spectrum windows showing the source of the data either the Detector name or the word Buffer with the spectrum name On the far right are the standard Windows Minimize Maximize and Close buttons 2 Menu Bar showing the available menu commands which can be selected with either the mouse or keyboard these functions are discussed in detail in Chapter 4 13 MAESTRO 32
150. king a region with a rubber rectangle and zooming in using the right mouse button menu Marker 5343 131 24 KEV Unido Actor tri akao Fol Marker 5343 131 24 KEV Fig 15 Zooming In Using the Rubber Rectangle and Right Mouse Button Menu 21 MAESTRO 32 V6 A65 B32 3 5 4 Sizing and Moving the Full Spectrum View To change the horizontal and vertical size of the es BOI Display Full Spectrum View move the mouse pointer onto 4 tes AJ 21919 tute the side edge bottom edge or corner of the window until the pointer changes to a double sided arrow see Fig 16 Click and hold the left mouse button drag the edge of the window until it is the size you want then release the mouse button To move the Full Spectrum View to a different part of the screen move the mouse pointer onto the top edge of the window until the pointer changes to a four sided arrow see Fig 16 Click and hold the left mouse button drag the window to its new location and release the mouse button Fig 16 Two Sided Pointer for Sizing Full Spectrum View and Four Sided Pointer for Moving Window 3 6 Buttons and Boxes This section describes MAESTRO s radio buttons indexing buttons Save File Formal and checkboxes To activate a button or box just click on it aerei Integer SPC Data Radio buttons Fig 17 appear on many MAESTRO dialogs and C Floating point SPC Data allow only one of the choices to be selected
151. l 296 and not here About This tab Fig 52 displays hardware AT x and firmware information about the Amplifier Ampifier2 AmpifierPRO ADC Stabilizer currently selected DSPEC Pro as well High Voltage About Status Presets MDA Preset as the data Acquisition Start Time RANDT266 MCB 132 and Sample description In addition the Access field shows whether the Sample Detector is currently locked with a pp password see Section 4 4 4 Read alii de Acquisition Start Time Access n that the Detector di 15 09 06 Monday September 22 2003 Read Write Os Read Only means It 1s Firmware Revision Serial Number Acquisition Mode locked DSPA 001 00123 PHA Status Figure 53 shows the Status tab There are 21 values monitored at all times You can select any six of these to be displayed simultaneously on the Status tab The parameters you choose can be changed at any time so you can view them as needed Two types of values are presented OK or ERR and numeric value The state of health SOH parameters are all OK or ERR If the state is OK the parameter stayed within the set limits during the spectrum acquisition If the parameter varied from the nominal value by more than the allowed limit the ERR is set until cleared by the program The numeric values are displayed in the units reported Fig 52 DSPEC Pro About Tab 54 3 MENU COMMANDS by the DSPEC Pro Security Detector RRETRSeA es sea xj temperatur
152. lF7 Fig 95 Click on a Detector on this list to display its memory in the Full and Expanded Spectrum Views The Pick Detector list opa Baer shows the available Detectors listed by Detector number and a Preferences brief description Fig 94 Display Menu This is duplicated by the Detector droplist on the Toolbar see page 19 In addition the first 12 Detectors on the list can be selected by pressing lt Ctrl F1 gt for the first Detector in the pick list lt Ctrl F2 gt for the second Detector and so on through lt Ctrl F12 gt see Section 5 4 8 The current pick list is selected from the Master Detector Pick Detector x i i 1 0000001 DSPEC 45 GMS List using Services Edit Detector List as discussed in O a Section 4 4 5 0000003 ORSIMP4 MCB 4 0000004 ORSIMP4 919 input 1 0000005 ORSIMP4 919 input 2 0000006 ORSIMP4 313 input 3 4 6 2 Detector Buffer 0000007 ORSIMP4 919 input 4 0000008 92x 02HATT This command switches the active window spectrum and Status Sidebar displays between the last active Detector and the last active buffer The Full and Expanded Spectrum Views display the data in histogram form This function is duplicated by the accelerators lt F4 gt and lt Alt 6 gt You can also use the Toolbar s Detector droplist Fig 95 Detector Selection List 99 MAESTRO 32 V6 A65 B32 4 6 3 Logarithmic Logarithmic toggles the vertical scale of the Spectrum display between the logari
153. lated peak 5 You will now use the gain stabilization section of the Stabilizer tab to configure the resolution enhancer The gain stabilizer and resolution are somewhat similar in function and only one of these features can be used at a time Enter the Center channel and Width of the peak acquired in Step 4 the maximum Width is 255 channels If you wish use the Suggest button 6 If you have already used the resolution enhancer you can either use the previously established settings which will go into effect when you turn on the enhancer in Step 7 or click on Initialize to clear all settings Initialization does not change the current Center channel and Width 7 Return to the PRO tab and turn on the resolution enhancer 8 Clear the MCB re start acquisition and monitor the FWHM of the target peak until it no longer changes Typically the more charge trapping exhibited by the detector the longer the data collection time 9 When you are satisfied that the FWHM has reached the best possible value clear the MCB and collect another spectrum for confirmation 10 At this point the resolution enhancer is now trained for the current peak shape parameters and can be turned off You can leave it on if you wish but you might notice some peak broadening 11 If you change any parameters that affect peak position and or shape you must repeat this training procedure ADC This tab Fig 49 contains the Gate ZDT Mod
154. le menus All important operations that need to be In this manual Detector capitalized means the transducer high purity germanium sodium iodide silicon surface barrier or others plus all the electronics including the ADC and histogram memory The transducers are referenced by the complete name e g high purity germanium HPGe detector MAESTRO 32 V6 A65 B32 performed on the spectrum such as peak location insertion of regions of interest ROIs and display scaling and sizing are implemented with both the keyboard accelerators and mouse toolbar and menus Spectrum peak searching report generation printing archiving calibration and other analysis tools are available from the menus Some menu functions have more than one accelerator so that both new and experienced users will find the system easy to use This version of MAESTRO continues to offer the flexibility of constructing automated sequences or job streams Buffers are maintained in the computer memory to which one spectrum can be moved for display and analysis either from Detector memory or from disk while another spectrum is collected in the Detector As much as possible the buffer duplicates in memory the functions of the Detector hardware on which a particular spectrum was collected Data can also be analyzed directly in the Detector hardware memory as well as stored directly from the Detector to disk This release of MAESTRO allows you to open up to eig
155. lows you to open up to eight Detector windows and eight buffer windows simultaneously Support has been added for the new ORTEC digiBASE microBASE and DSP Scint MCBs The list of library peaks can be sorted by clicking on the column header MAESTRO now uses the same library editor as GammaVision 32 so both LIB and MDB format libraries can be created modified and used within the program The old MAESTRO MCA library file format is no longer supported 1 6 3 MAESTRO 32 V5 35 vs V5 3 l Ze 3 4 Support for Windows XP Pro has been added Operation with Windows 95 is not guaranteed The DSPEC jr is supported on the USB port Support for SP3 of Windows 2000 has been added 1 6 4 MAESTRO 32 V5 3 vs V5 l 2 The digiDART portable MCA is supported on the USB port The MCB presets and controls have been moved into a single menu control MCB Properties This makes all the MCB controls more uniform and more in line with other Windows programs 1 INTRODUCTION 3 Isotope markers have been added The isotope markers show all the gamma rays of a single nuclide from the library on the spectrum displays when any one of the gamma rays from that nuclide is selected on the spectrum The amplitude of the marker for the selected peak is proportional to the peak area The amplitude of the marker for the other peaks is proportional to the first peak and the branching ratio 4 Support for the SBS60 has been add
156. lt F3 gt For the DSPEC Plus in ZDT mode the lt F3 gt key switches between the normal LTC or uncertainty ERR spectrum and the ZDT corrected spectrum It duplicates the Acquire ZDT Display Select command 5 4 3 ZDT Compare lt Shift F3 gt For the DSPEC Plus in Compare mode this accelerator switches the compare spectrum between the ZDT spectrum and its accompanying LTC or ERR spectrum Used in combination with lt F3 gt or Acquire ZDT Display Select it allows you to display the normal to ZDT uncertainty to ZDT ZDT to normal or ZDT to uncertainty comparisons 116 5 KEYBOARD COMMANDS 5 4 4 Detector Buffer lt F4 gt The lt F4 gt key switches between the display of the data in the Detector and the data in the buffer It duplicates the function of lt Alt 6 gt and Display Detector Buffer see Section 5 3 5 5 4 5 Taller Shorter lt F5 gt lt F6 gt These keys decrease or increase the vertical full scale of the displayed spectrum so the peaks appear taller or shorter respectively They duplicate the function of the lt 1 gt and lt gt keys The vertical scale value is always shown on the Toolbar 5 4 6 Narrower Wider lt F7 gt lt F8 gt These keys increase or decrease the horizontal scale of the data display so the peaks appear narrower or wider respectively They duplicate the function of lt gt and lt gt keys The horizontal scale value is always shown on the Toolbar 5 4 7 Full View lt Alt
157. lt printer Ready Type HF DeskJet 550C Printer Where LPT1 Comment Number of copies fi A OK Cancel Fig 111 The Print Plot Dialog 145 MAESTRO 32 V6 A65 B32 7 1 2 Options The Options menu is shown in Fig 112 These menu items control the plot settings and WINPLOTS operation 7 1 2 1 Plot The Plot Options dialog is shown in Fig 113 These settings are all stored in the default settings file and reloaded when WINPLOTS is next started The Title is printed at the top of every plot just above the sample description If no title is specified a default title composed Title of the spectrum and ROI file names is i Boxed le C Filed generated The Printer is selected from the list of available printers in Windows p Horizontal Energy Channels If the printer supports color printing the Tic Marks MT Grid Lines Full Scale IV Colors button will be enabled Clicking on it will display the Color Options dialog Fig 114 If you want monochrome prints from a color printer mark the Monochrome box The five different plot areas can have different colors Select the desired color from the droplist for each area These are the Windows colors defined for the selected printer and might not duplicate the actual colors printed pei ROI The ROIs can be Boxed that is represented as boxes drawn from the start to the stop channel or energy and from the baseline to above the s
158. marking ROIs The calibration is stored with the spectrum when you use the Save command The calibration values are also saved when the program is exited and are read when the program is started so that the calibration is automatically restored Recalling a spectrum will also recall its associated calibration Detectors can be calibrated directly when they are not acquiring data Each Detector and the buffer can have separate calibration values and units Once a unit is calibrated all CONNECTIONS programs on all PCs in the network use the same calibration Calibration internally maintains a table of the entered points As each new point is entered a notation at the bottom of the spectrum window is displayed to indicate how many points have been entered in the table The table is reset to zero entries whenever 1 the Destroy Calibration button is activated or 2 another window is selected in which case only the computed quadratic calibration coefficients are retained for the currently active display NOTE With this latter case in mind you should be careful to perform the calibration in the Detector or the buffer with an uninterrupted series of points before switching to the other display otherwise the table will be cleared Terminating and restarting the application will also clear the table When recalibrating a previously calibrated spectrum such as after resetting the table as described in case 2 above the old calibration is retai
159. matches the underlined letter in the menu item name For example the multi key combination to activate the File menu is lt Alt F gt Note that the MAESTRO accelerator keys do not interfere with Windows menu operations or task switching For example when a menu is active 1 e pulled down the lt gt lt gt and lt 1 gt lt 1 gt keys revert to their normal Windows functions of moving across the menu bar and scrolling up down within a menu respectively As soon as the menu is closed they behave as MAESTRO accelerators again 5 2 Marker and Display Function Keys 5 2 1 Next Channel lt gt gt lt gt The right and left arrow keys move the marker by one displayed pixel in the corresponding direction This might represent a jump of more than one spectral data memory channel especially if the horizontal scale in channels is larger than the width in pixels of the window see the discussion in Section 3 3 109 MAESTRO 32 V6 A65 B32 110 Table 3 Quick Reference to MAESTRO Keyboard Commands Key lt I gt or lt F5 gt lt 1 gt or lt F6 gt lt a gt lt gt lt gt or lt F7 gt lt gt or lt F8 gt lt Ctrl gt gt lt Ctrl gt lt Shift gt lt Shift gt lt Alt gt gt lt Alt gt lt PageUp gt lt PageDown gt lt Home gt lt End gt lt Ctrl Fi gt lt F2 gt lt F3 gt lt Shift F3 gt lt F4 gt or lt Alt 6 gt lt F5 gt or lt gt lt
160. meters interactively with a live waveform showing the actual pulse shape or just to verify that all is well Amplifier PRO This tab Fig 48 contains the controls for the Low Frequency Rejector LFR filter Resolution Enhancer and Enhanced Through put Mode To enable a particular feature mark the corresponding checkbox Any or all of these features can be used at one time however the LFR and enhanced throughput modes must be set up before the resolution enhancer is configured as discussed below Note that once an MCB is trained for the Resolution Enhancer see the following section it must be retrained if any settings are changed that can affect peak shape or position e g bias gain rise time flattop PZ 49 MAESTRO 32 V6 A65 B32 Low Frequency Rejector See the ENEMI x gt DSPEC Pro hardware users manual for High Voltage About Status Presets MDA Preset a discussion of this feature You cannot Amplifier Amplifier2 Amplifier PRO ADC Stabilizer optimize or pole zero the DSPEC Pro while in LFR mode The Optimize F Low Frequency Rejecter feature should be used with the LFR Mio ees i Enables resolution enhancement filter off Subsequent measurements can for the Gain Stablilzer then be taken with the LFR filter on Also LFR mode affects the available T Enhincad Thioughoai Mode range of protection times in Enhanced Protection Time 12800 us Throughput Mode as discu
161. mple Description function under the Services menu The loop count value can be included in any text by typing three question marks in the text where the loop count is to be inserted The loop count replaces wherever it appears 131 MAESTRO 32 V6 A65 B32 EXPORT filename This command executes the Export function with the filename specified The remainder of the options are defined on the Export tab under File Settings The filename can include any of the variables defined in Section 6 3 FILL BUFFER This command transfers the active Detector data to the buffer This command has the same function as Copy to Buffer under Acquire IMPORT filename This command executes the Import function with the filename specified The remainder of the options are defined on the Import tab under File Settings The filename can include any of the variables defined in Section 6 3 LOAD LIBRARY filename extension This command loads the specified LIB or MDB nuclide library and duplicates the function of Library File under the Services menu The old MAESTRO library format MCA is no longer supported LOCK Pwd Name This command locks the current Detector using Pwd as the password If the optional Name parameter is missing the Locked name defaults to Job This password is retained in the JOB file and used with any JOB commands except SEND MESSAGE so the operator does not
162. mplete file path name e g c user spectrum test txt into the dialog box The filename is the name selected in the filename entry dialog File Base Name This will insert the file path name without the extension e g File Path Name File Base Name Short Name Short Base File Extension Fig 27 Import Arguments c user spectrum test into the dialog box The filename is the name selected in the file name entry dialog The extension can be entered manually after the macro e g FullBase CHN into the dialog box Note that the dot must also be entered Related filenames can also be made by adding characters before the dot e g FullBase A CHN Short Name This will insert the filename e g test TXT into the dialog box The filename is the name selected in the filename entry dialog File names can be constructed as file base file extension 31 MAESTRO 32 V6 A65 B32 Short Base This will insert the base filename e g test into the dialog box The file base name is the name selected in the filename entry dialog File Extension This will insert the file extension e g TXT into the dialog box The file extension is the name selected in the filename entry dialog Note that the dot is not included Any manually entered input of the macro form xxx will be included in the argument list without changes Initial Directory Specify the initial directo
163. n Defaults Fig 101 Display Color Selections To accept the color changes click on OK These color changes will be recalled the next time MAESTRO is started 103 MAESTRO 32 V6 A65 B32 NOTE The Spectrum Colors affect only the spectrum windows The colors of the remaining features on the screen must be changed using the Windows Control Panel which will also of course affect the appearance of all other Windows applications on this PC 4 6 11 3 Peak Info Font Color This function opens the Font dialog see Font Fig 102 It allows you to select the font type size and color used to display Peak Info data in the text box in the spectrum windows see Section 4 3 4 Fig 75 Y Times New Roman Y Verdana Effects TT Strikeout TT Underline Color tes y Font style Size Cancel 10 12 14 18 24 lu Sample Script Westem v Fig 102 Peak Info Font Selection 4 7 Window This menu contains standard Windows commands for controlling the display of the spectrum windows Fig 103 In addition to the spectrum window display mode Cascade Tile Horizontal Tile Vertical etc the list of open buffer and Detector windows is shown The currently active spectrum is checkmarked MAESTRO now has a Multiple Windows command that lets you choose between the newer multiple detector window mode and the original single detector window mode In single window mode no checkmark beside Multiple W
164. na RA A Oe ARS 116 Sit ROP ss iia sonado Saa e 116 9 4 2 ZDT i online Ren 116 SAS LD COMPAS ten Ai eau E AS A E ed 116 5 4 4 Detector BUM et x lose rina inni ea ee an dyer tie 117 SAS Pallet Shorter need 117 546 Narrower Wider Loire la detti ata 117 A A a eaa e e 117 A sr prrbre ribatte A 117 SIOE Keypad Keys dia bade ret aie ae ee etre eae ea Rae alae aes es at 117 Dele OG LANGA hp tia hw A E date eh ii 117 5 5 2 Auto Manual sack Gren taht lorelai iii ana 118 52s 111S seein RES seeks eae IONI 118 DA ZOOM N ZOOM OUt 642osu 25h AN 118 pos res oll Yoo EI RR ara aR OO CORRE OOO I A E O COM O COME OE NIE OIL 118 GOB EILES o AA Idea 119 6 1 Job Command Funcionales pate ds DS cess eek 119 OL LOOPS Smara sig LAS So BARONS a hia wed ad kee 119 OZ FINO AS ANA ACES AAA 119 6 1 3 Askon E a sth dele Le 119 6 1 4 Password Locked Detecta e eeH 120 6 1 5 JOB Files and the New Multiple Detector Interface 120 MAESTRO 32 V6 A65 B32 6 2 Summary of JOB Commands iia 45s eons eee ae eed ee ee eee eae eet 121 03 JOB Van able keane tati die iatale 125 6 4 JOB Programming Example con AAA eet BR eS 126 6 4 l Improxing he JOB rru lare leto bile amp tuted ce maton 128 6 5 JOB Command Details 2 3 SaR SRA Ae OE Ro ve ai 129 JAN B R D E A M E e otite i deine 143 Td WINBEOTS sele ba ani i aa NESA GEEN 143 DIARIO Lire eri IA ra 144 PVD ea ODUDMS ilaele a PA A ee 146 Pelle Blob Ang eda eee es 5 ae Be tee e eso
165. name as in any text by typing three question marks in the text where the loop count is to be inserted The loop count replaces wherever they appear RECALL CALIB file chn This command loads only the buffer calibration parameters from the calibration data stored with a spectrum This command can be used in generating reports that include library isotope identification The following is an example RECALL CALIB CALIBO01 CHN MARK PEAKS REPORT NEWDATA RPT The report NEWDATA RPT includes isotope identification using the energy calibration contained in CALIB001 CHN RECALL_ROI file roi This command marks the ROI channels in the buffer or Detector to conform to the table in the disk file created by SAVE_ROI or Save File under the ROI menu The data contents of the Detector or buffer are not altered by this operation The previous ROIs are cleared This command has the same function as Recall File under ROI It can be used in generating reports that look for specific isotopes library directed as opposed to peak search directed For example a calibration spectrum is run containing Co and Cs and ROIs 134 6 JOB FILES marked on the 122 keV and 662 keV peaks The calibration is saved as spectrum file COBCS CHN and as ROI file CoBcs ROT The command sequence is RECALL CALIB COBCS CHN RECALL ROI COBCS ROI REPORT COBCS RPT These commands report the values
166. nd END_LOOP after REPORT The whole JOB file now looks like this SET DETECTOR 1 SET PRESET CLEAR SET PRESET LIVE 1000 LOOP 10 127 MAESTRO 32 V6 A65 B32 CLEAR START WAIT FILL BUFFER SET DETECTOR 0 RECALL ROI DECAYPK ROI REPORT PRN SET DETECTOR 1 END_LOOP Note that an additional SET DETECTOR 1 has been inserted after REPORT so the loop will operate on the desired Detector Now select Services Job Control Click once on an existing JOB filename then click the Edit File button This will display the contents of that file in Windows Notepad You can then overwrite the existing instructions with the above set of commands However save the new instructions to a new file named SAMPDATA JOB using the File Save As function do not use Save or the original file will be lost This new JOB file can then be executed in MAESTRO from the Services menu by selecting Job Control to display the Run JOB File dialog Select SAMPDATA JOB from the list of files and click on Open 6 4 1 Improving the JOB This JOB file can be improved by adding a save step for each spectrum collected This is done by inserting the SAVE command in the Jos file The spectrum sample description is also entered here This sample description is saved with the spectrum and is printed by the REPORT command Note that the loop counter the in the JOB file text is used in the SAVE and DESCRIBE SAMPLE commands The new JOB file
167. nd choose the Shutdown mode The polarity is set in the DIM module The high voltage is overridden by the detector bias remote shutdown signal from the detector high voltage cannot be enabled if the remote shutdown or overload signals prevent it Enter the detector high voltage in the Target field click On and monitor the voltage in the Actual field Click the Off button to turn off the high voltage x Amplifier Amplifier2 AmplifierPRO ADC Stabilizer High Voltage About Status Presets MDA Preset i Target O Yolts Off Actual 0 Volts r Shutdown TTL y Sodium lodide Detector Off Overload Fig 51 DSPEC Pro High Voltage Tab 53 MAESTRO 32 V6 A65 B32 The shutdown can be ORTEC TTL or SMART The ORTEC mode is used for all ORTEC detectors except SMART 1 detectors Use the SMART option for those detectors Check with the detector manufacturer for other detectors The TTL mode is used for most non ORTEC detectors The high voltage in the DSPEC Pro is supplied by the SMART 1 module or in a separate DIM The recommended HV for SMART 1 is displayed on the dialog For other detectors see the detector manual or data sheet for the correct voltage The polarity is determined by the DIM or SMART 1 module To use a Sodium Iodide Detector mark the checkbox This changes the gain and zero stabilizers to operate in a faster mode For the DIM 296 the HV is controlled by the adjustment in the Mode
168. ned until after the second new point has been entered This facilitates recalibration since the previous calibration values can simply be adjusted rather than entered from scratch for the first two points Of course if you want a complete new recalibration you can click on the Destroy Calibration button 4 3 2 2 How to Calibrate The calibration is done by first marking well separated clean peaks with ROIs The object is to supply the energies for these peaks This is not absolutely necessary since if no ROI is present at the marker the marker channel itself will be used However that is less accurate than using the ROI method 85 MAESTRO 32 V6 A65 B32 1 Place the marker on one of the peaks 2 Press lt Insert gt to insert an ROI on the peak 3 Select Calculate Calibration to choose the marked peak and calculate the centroid of the peak If there is an ROI at the marker and the marked peak is good that is if it can be used in the calculation the program will ask for the energy of the peak see HE Peak in channel 384 00 Calibration Energy 1228 16 Cancel Destroy Calibration Calibrate Fig 72 If there is no ROI at the marker a warning will appear at the bottom of the screen see Fig 73 and the marker channel will be used instead of the peak centroid Fig 72 The Calibrate Dialog 4 Now move the marker to the second peak and repeat the process Marker 758 758 00 kev 2 48
169. nista ibis 75 Exiting InSight Mod6 2500s 44 0 cd due raid ale 75 InSight Mode Controls 0 ccc cece eee eee ees 75 Mark Types orere wate tickets OEE ET A ET a EA 71 4 2 7 4 Gain Stabilization sasso ene RRA or AEG wR TERRE Py RAE 78 4 2 7 5 Zero Stabilization ope Re ante EIA A 80 4 2 7 6 ZDT Zero Dead Time Mode 0 0 0 ccc eee 81 4 2 7 7 Setting the Rise Time in Digital MCBs 0000 82 di Calcolatori ele Bh a Se EEG IAE ek 84 lis VITO COMPRI POTE ANTE bet tan aaa Ge ea a ee ONT ETTI 84 4311 A 84 AZ Sensitivity Factors so riaperto 84 32 eT ALLO Nesp 5h caters E a Beas ae aL na ee Phe 85 432l General rr dada 85 4 3 2 2 SHOW t Calibrate shit arr OSE REO SEEN eee 85 4 3 3 Peak Search a pie dre ABE is 86 494 Peak MMO ts RAEE 87 430 Input Count Rate Di ile in hind in aca 2 sins 89 Gh FEO SUM RISE PRE feats eee A E A SO 90 491 SIMO O O A O DE 90 MOS estada do ado tasas 90 ASIS E AS E ks aw AE O DD MG oe ned 91 4 4 1 Job Control Siria tira be bowen ade te oh gece hecho Meteora ee ap ga 91 4402 EADIALY tie apor garea or eras Ghee ko eee ww awas Gare Atos eR oak 93 4 4 2 1 Select Peak asas a eat oa ba be ee bow eee bs aie 93 AAD 2 SACHA PUG ce hee ee ey od ee ek EES Oe Oe RRR Ne 93 4 4 3 Sample Descriptions stre lett ae ie dade carlotta 94 4 4 4 Lock Unlock Detector LL ce ce cece eee eee ees 94 AAS Edit Detecta tds da ta 95 SAO eee Nea a Le SANE EO Re TSS ar c
170. nsion is LIB At startup MAESTRO automatically attempts to load the library last loaded Thereafter this working library can be replaced at any time with Library Select File The library stays resident in memory after it has been loaded In the analysis report the nuclides are listed in the order they are in the library The size of a working library is limited to 65 000 bytes for any combination of nuclides and peaks e g about 100 nuclides with 1900 peaks or 200 nuclides with 1600 peaks Master or reference libraries e g MASTER LIB from A53 BI or MASTER MDB from NuclideNavigator from which the working libraries are built can be any size 148 7 UTILITIES NOTE Some old libraries might need to be rebuilt by copying the complete library to a new library as described in the following section If you receive a Can t read library error the library should be rebuilt Figure 117 shows the library Editing dialog Editing GyDemo Lib Creation 4 13 88 10 59 04 AM Cd 109 Cadmium Edition 4 5 95 8 19 53 AM Hof Lie A Das Uncertainty 5 4000 Nuclide Flags Edit Cd 109 Peaks Peak Flags G iL UA ES 2 2 16 8 6000E 3 24 94 1 7000E Insert Cut Edit Cut Insert Paste Paste Fig 117 Editing Library Dialog The control menu is shown in Fig 118 click on the Title Bar Ei icon to open it This menu contains several o
171. ntry dialog File names can be constructed as file base file extension Any executable program that can be executed from the Windows Run command can be selected including DOS batch commands 29 MAESTRO 32 V6 A65 B32 Short Base This will insert the base filename e g test into the dialog box The file base name is the name selected in the filename entry dialog File Extension This will insert the file extension e g CHN into the dialog box The file extension is the name selected in the filename entry dialog Note that the dot is not included Any manually inserted input of the macro form xxx will be included in the argument list without changes Initial Directory The initial directory for the program to use can be specified as directly File Directory entered character strings or the user can select from the list of macros in Program Directory Fig 25 The list is displayed by clicking on the arrow button to the right MAESTRO Directory of the Initial Directory field Current Directory Fig 25 The Initial File Directory Character Macros This is the directory selected in the filename selection dialog when the export file is selected e g c user spectrum Program Directory This is the directory for the conversion program It is shown in the first entry of this dialog MAESTRO Directory This is the directory where the MAESTRO program is stored By default this is c Program F
172. o MDA Calculation and Activity Not in Total flags are not used in MAESTRO The No MDA Calculation flag indicates that the nuclide will not be reported unless present in the spectrum If this is not checked the MDA value will be printed if the nuclide is not present in the spectrum Edit Library Nuclide x Nuclide Name MATE Half Life fi 2410 Yrs Uncertainty 15 0000 Nuclide Flags TT Thermal Neutron Activation T Fast Neutron Activation F I Fission Product I I Naturally Occurring Isotope N I Photon Reaction P TT Charged Particle Reaction 0 TT No MDA Calculation M T Activity Not in Total A Cancel Fig 122 Edit or Manually Add Nuclide Name 151 MAESTRO 32 V6 A65 B32 The Activity Not in Total flag indicates that the activity for this nuclide will not be included in the total activity for this sample 7 2 3 1 Manually Adding Nuclides To manually add a nuclide to the library list 1 Locate the nuclide immediately below the desired insertion position and click once to highlight it 2 Next click on the manual Insert button to open the Edit Library Nuclide dialog The dialog will be blank 3 Fill in the name and half life as well as any other inputs and click on OK 7 2 3 2 Deleting Nuclides from the Library To remove a nuclide from the library click on the nuclide then pesa on Cut This will remove the nuclide from the list In addition it will activate the gray Pa
173. o the stabilizer can continue Suggest Region Suggest Region to function when the adjustment Sa ane Sy eae value reaches 100 the stabilizer a se cannot make further corrections in that A i direction The Center Channel and Width fields show the peak currently used for stabilization Fig 59 digiDART Stabilizer Tab To enable the stabilizer enter the Center Channel and Width values manually or click on the Suggest Region button Suggest Region reads the position of the marker and inserts values into the fields If the marker is in an ROI the limits of the ROI are used If the marker is not in an ROI the center channel is the marker channel and the width is 3 times the FWHM at this energy Now click on the appropriate Enabled checkbox to turn the stabilizer on Until changed in this dialog the stabilizer will stay active even if the power is turned off When the stabilizer is enabled the Center Channel and Width cannot be changed High Voltage Figure 60 shows the High Voltage tab which allows you to turn the high voltage on or off set and monitor the voltage and choose the ShutDown mode The high voltage is overridden by the detector bias remote shutdown signal from the detector high voltage cannot be enabled if the remote shutdown or overload signals prevent it Enter the detector high voltage in the Target field click On and monitor the voltage in the Actual field Click the Off button to turn off the high v
174. ob LOOP lt reps gt END_LOOP Executes all the commands between LOOP and END lt reps gt number of times LOOP SPECTRA END_LOOP This command executes the commands within the loop once for each spectrum stored in the Detector hardware MARK_PEAKS Sets ROIs on all peaks in the active Detector or buffer window QUIT Terminates this copy of MAESTRO RECALL file chn Reads the spectral data file to the buffer RECALL_CALIB file chn Loads the calibration data from the spectrum in the disk file to the buffer calibration parameters The spectrum is not changed RECALL_ROI file roi Sets the ROIs from the table in the file REM Text This line is a comment remark and is ignored during command processing REPORT filename Writes the ROI marked peak report to the disk filename or to the printer PRN RUN program Executes an application program EXE by default 122 6 JOB FILES RUN_MINIMIZED program Same as the RUN command above except that the application is run initially as an icon minimized rather than as a normal window SAVE file chn Saves the spectrum in the active Detector or the buffer in the disk file SAVE_ROI file roi Saves the table of ROIs in the active Detector or the buffer in the disk file SEND _MESSAGE text Sends the text as a command to the Detector SET_BUFFER Selects the buffer same as SET DETECTOR 0 SET_DETECTOR lt number
175. oltage 64 The shutdown can be ORTEC TTL or SMART The ORTEC mode is used for all ORTEC detectors except SMART 1 detectors use the SMART option for those detectors Check with the detector manufacturer for other detectors The TTL mode is used for most non ORTEC detectors The high voltage in the digiDART is supplied by the SMART 1 module or in a separate DIM The recommended HV for SMART 1 is displayed on the dialog For other detectors see the detector manual or data sheet for the 3 MENU COMMANDS Properties x Field Data About Status Presets MDA Preset Nuclide Report Amplifier Ampliier2 ADC Stabilizer High Voltage i Target 3500 Volts Off Actual E 3520 Volts Shutdown ORTEC y Fig 60 digiDART High Voltage Tab correct voltage The polarity is determined by the DIM or SMART 1 module Field Data This tab Fig 61 is used to view the digiDART spectra collected in Field Mode that is in remote mode detached from a PC The digiDART is always in Field Mode when disconnected from the PC The spectrum can then be viewed as the active spectrum in the digiDART The active spectrum is the spectrum where the new data are collected The current active spectrum is lost The lower left of the tab shows the total number of spectra not counting the active spectrum stored in the digiDART memory The spectrum ID of the active spectrum is shown in the Properties EI Amplifier
176. ominal value of 12 0 you should increase values of the rise time for better resolution for expected lower count rates or when unusually high count rates are anticipated reduce the rise 61 MAESTRO 32 V6 A65 B32 Properties x Field Data About Status Presets MDA Preset Nuclide Report Amplifier Ampiifier2 ADC Stabilizer HighVoltage time for higher throughput with somewhat worse resolution Use the up down arrows to adjust the 1 sa Rise Time y Flattop gt rise time within the range of 0 2 to 23 0 fzo 4 width fo s0 After all the controls have been adjusted MIL 3 Wee a Tit 0 03906 return to the Amplifier tab and click on Start Auto The most recent settings are saved in the digiDART firmware even when the power is turned off m Pole Zero r InSight Start Stop For the more advanced user the InSight mode allows you to directly view all the parameters and adjust them interactively Fig 57 digiDART Amplifier 2 Tab while collecting live data To access the InSight mode go to the InSight section on the Amplifier 2 tab and click on Start Note that the Amplifier 2 tab graphically presents a modeled shape This is not a sampled waveform of the actual pulse shape only a model based on the current parameters The modeled shape 1s nominally a quasi trapezoid whose sides and top can be adjusted by the controls in this dialog While a
177. ondition the Detector stops counting when the live time reaches this limit unless some other preset condition occurs first The live time is the real time minus the dead time This command has the same function as the Live Time field on the Presets tab under Acquire MCB Properties refer to Section 4 2 7 for additional information The JOB processor expects one or more numerals as the argument to this command entered with or without quotation marks e g you can enter the numerals 1000 or the string 1000 The JOB processor will also accept the loop counter as an argument to the function as long as it is set in quotation marks For example you could use the loop counter to collect a series of spectra with increasing ROI integral counts by appending zeroes to the loop counter to obtain 1000 counts then 2000 and so on SET_PRESET_REAL lt seconds gt This command sets the Real Time preset for the active Detector The preset is set to the entered value With this preset condition the Detector stops counting when the real time reaches this limit unless some other preset condition occurs first This command has the same function as the Real Time field on the Presets tab under Acquire MCB Properties refer to Section 4 2 7 for additional information The JOB processor expects one or more numerals as the argument to this command entered with or without quotation marks e g you can enter the numerals 1000 or the string 1000 The JOB
178. orizontal Scaling Section of Toolbar 18 3 GETTING STARTED 2 Zoom In decreases the horizontal full scale of the Expanded Spectrum View according to the discussion in Section 3 3 so the peaks appear magnified This duplicates Display Zoom In and Keypad lt gt l Zoom Out increases the horizontal full scale of the Expanded Spectrum View according to the discussion in Section 3 3 so the peaks appear reduced in size This duplicates Display Zoom Out and Keypad lt gt Center moves the marker to the center of the screen by shifting the spectrum without moving the marker from its current channel This duplicates Display Center and Keypad lt 5 gt Al Baseline Zoom keeps the baseline of the spectrum set to zero counts The right most part of the Toolbar is a drop down list of the available Detectors Fig 11 To select a Detector or the buffer click in the field or on the down arrow beside it to open the list then click on the desired entry The sidebar will register your selection Finally note that as you pause the mouse pointer over the center of a Toolbar button a pop up tool tip box opens describing the button s function Fig 12 106 DART Portable unit 2 y 3 STOP Buffer 01 RKE MCB 1 02 RKE 919E Input 1 03 RKE 919E Input 2 Stop acquisition 05 SINGLEY DSPEC i i 106 DART Portable unit 2 Fig 123 Fook Tip 109 92 MCALLISTER DON Fig 11 Drop Down Detector List 3 5 Using the Mouse
179. ote that the point pixel size in the Point and Fill ROI mode illustrations has been exaggerated to make them easier to see 4 6 11 2 Spectrum Colors Tay on m Use this dialog see Fig 101 to select colors for various m features in the two spectrum windows Each scroll bar controls the color of a different feature The vertical colored stripes behind the scroll bars show the available colors The Background scroll bar controls the background color of the spectrum window Foreground determines the color of the spectrum points or fill ROI governs the color of the ROI points or fill The points fill of a compared spectrum Fig 100 Comparison of the File Compare use the Compare color unless they Points Fill ROI and Fill All overlap with the original spectrum in which case the Display Modes Composite color is used To change a color click and hold the left mouse button on the scroll bar button and drag it slowly across the different saa sr colors When the desired color is displayed in the box aari beside the OK button release the mouse button The full spectrum window will immediately change color ROI full To cancel a color change return the slider button to its ua starting color or close the Spectrum Colors palette by TARA SEA clicking on Cancel or pressing lt Esc gt Special _4 gt e OK Default Cancel To reset the color values to the original MAESTRO colors sli Ptas click o
180. ou exit MAESTRO while in InSight mode on next startup this MCB will still be in InSight mode The display can include a Mark to indicate one of the other signals shown in lt none gt Fig 68 The Mark is a solid color region displayed similarly to that of an ROI in the spectrum This Mark can be used to set the timing for the gate dar rica pulse It can also be used to set the shaping times and flattop parameters to BaseLineR get the best performance e LDisc Gate For example suppose it is necessary to get the best resolution at the highest Peak throughput possible By viewing the pulses and the pileup reject marker the Fig 68 Mark rise time can be increased or decreased to obtain a minimum of pileup reject Display pulses Selection Mark Types For the Mark choose either points or filled to the zero line display This is controlled by the selection in the Display Preferences menu item That choice does not affect the PHA mode choice The colors are the same as for the PHA mode Not all DSP MCBs support all marks None No channels are marked in the display PileUpReject The region marked indicates when the PUR circuit has detected pileup and is rejecting the marked pulses NegBLDisc This shows when the negative baseline discriminator has been triggered Typically this signal only marks the TRP reset pulse The signal is used internally in the live time correction baseline restoration and pile up
181. peak found is marked as an ROI If the buffer is calibrated the width of the ROI is three times the calculated FWHM of the peak If the buffer is not calibrated the width of the ROI equals the width of the peak as determined by Peak Search Overlapping or close peaks might have contiguous ROIs Existing ROIs are not cleared therefore you might wish to clear them before performing this analysis This command has the same function as Peak Search in the Calculate menu The following is an example of the MARK PEAKS command used with REPORT MARK PEAKS REPORT TESTDAT RPT The above procedure does a peak search directed report of nuclides found as listed in the library currently in memory then writes to disk an ROI Report for the peaks found 133 MAESTRO 32 V6 A65 B32 QUIT This command unconditionally terminates the MAESTRO program and returns control to Windows RECALL file chn This command reads a disk filename to the buffer The disk file must be in the format created by SAVE Any DOS filename including the drive and subdirectory can be used The resulting memory size of the buffer is the same as the memory size of the file The file live time and real time are restored If the spectrum file has calibration information the calibration parameters are used to set the calibration for the buffer This command has the same function as Recall under the File menu The loop count value can be included in the above file
182. pectrum The Filled selection will fill the region under the spectrum data with a cross hatch It is not completely filled in and does not extend above the data Options Plot Save Settings on Exit Always on Top Fig 112 The Options Menu Plot Options Ea Printer HP DeskJet 550C Printer Colors Text Axis Labels WW M Description Vertical Log C Linear Tic Marks M JT GridLines Auto Scale IV ange Cancel Fig 113 The Plot Options Dialog Color Options x r aessesesseesenzeazioneseenanennt Grid and Tics Spectrum Data Roi Box or Fill Blue Y Axis Labels Black Y Other Text Green i Cancel mu Text The Axis Labels and the text Description from the file can be printed The description includes the sample detector and acquisition description 146 Fig 114 The Color Options Dialog 7 UTILITIES Horizontal If the spectrum to be plotted is calibrated the plot can be either in Energy or Channel numbers If the spectrum is not calibrated this value is set to channel and cannot be altered Tic Marks small lines indicating the scale on the axes can be included Including them makes the plot more readable Grid Lines can also be included The grid lines are lines across the complete width of the plot at the major tic marks The plot can either be the complete spectrum or any part of the spectrum Unmarking Full Scale will enable the Range bu
183. play is the same as the Peak Info display on the selected peak in the spectra stored in the PC The calculated value is computed by multiplying the net peak count rate by a user defined constant 71 MAESTRO 32 V6 A65 B32 If the constant includes the efficiency and branching ratio the displayed value is the activity You enter the nuclide label and the activity units Properties xi Amplifier Amplfier2 ADC Stabilizer HighVoltage Field Data About Status Presets MDA Preset Nuclide Report Sens ee el CO art el Pe pe Nuclide Lo ROI Hi ROI Factor AddNew Update gt Delete Library Report Nuclide Eu 1 54 Nuclide Eu 1 54 Factor fi O000E 000 Low ROI 643 Units Energy 12314 ll morfss G 123 23 keV Fig 66 Nuclide Report Setup Tab 1 762 Cnts The report has this format coso 1325 noi coso 1ma Tn CO 57 122 1 1 48E 00 72 3 MENU COMMANDS Calculations These are the calculations used to generate the Activity Uncertainty and Peak values for the Nuclide Report 1 Activity Activity is calculated as follows doni ea ili where NucCoef is normally the inverse of the product of the efficiency and the branching ratio Note that the efficiency is the absolute counting efficiency for the source detector geometry being used Thus in order to get meaningful activity results as in any counting situation you need to have efficiency factors w
184. port only for the ROIs currently displayed in the Expanded Spectrum View The ROI Report dialog shown in ROI Report I Fig 35 opens first It allows you to select Printer a file preview it on screen or send the Name HPLasedet4 y Properties report to the printer via Windows and Status Ready select one of two output formats Tes RE Lasts 4 Where 4Srad_printer hp4 Paragraph or Column Comment T Print to fle IT Print to display Both report formats supply the same PE information If the spectrum is not Paragraph Column Cancel calibrated the following are reported for each ROI Fig 35 ROI Report Dialog 1 ROI number and Detector number 2 Start channel of the ROI 3 Stop channel of the ROI 4 Gross area of the peak 5 Net area of the peak as calculated in Calculate Peak Info 6 Error in net area as calculated in Calculate Peak Info 7 Centroid channel of peak as calculated in Calculate Peak Info 8 Full width at half maximum FWHM 9 Full width at one tenth maximum FW 1 10 M If the spectrum is calibrated both calibrated and channel values are given for items 1 9 above and in addition the following is included 10 The best match from the library If a match is found in the library the following additional parameter is supplied 11 The activity calculated using the net area the live time and the factor from the library 37 MAESTRO 32 V6 A65 B32 4 1 7 1 Printing to a
185. position according to the criteria in Section 4 5 4 This duplicates ROI Mark Peak and lt Insert gt pel Clear ROI removes the ROI mark from the channels of the peak currently selected with the marker This duplicates ROI Clear and lt Delete gt The next section of the Toolbar Fig 9 contains the buttons that control the tos Al spectrum s vertical scale These commands are also on the Display menu In Fig 9 Vertical addition vertical scale can be adjusted by zooming in with the mouse see Scaling Section of Fig 15 Toolbar Loa Vertical Log Lin Scale switches between logarithmic and linear scaling When switching from logarithmic to linear it uses the previous linear scale setting Its keyboard duplicate is Keypad lt gt Al Vertical Auto Scale turns on the autoscale mode a linear scale that automatically adjusts until the largest peak shown is at its maximum height without overflowing the display Its keyboard duplicate is Keypad lt gt The field to the left of these two buttons displays LOG if the scale is logarithmic or indicates the current vertical full scale linear value The horizontal scaling section Fig 10 follows next It includes a L di field that shows the current window width in channels and the Zoom In Zoom Out Center and Baseline Zoom buttons These commands are also on the Display menu In addition horizontal scale can be adjusted by zooming in with the mouse see Fig 15 Fig 10 H
186. processor will also accept the loop counter as an argument to the function as long as it is set in quotation marks For example you could use the loop counter to collect a series of spectra with increasing ROI integral counts by appending zeroes to the loop counter to obtain 1000 counts then 2000 and so on SET_PRESET_UNCERTAINTY lt uncert limit gt lt low chan gt lt high chan gt For the DSPEC only this sets the statistical preset to the uncertainty based on the counts in the region between the low and high channels See Section 4 2 7 and Eq 6 page 78 for the details of the calculation 139 MAESTRO 32 V6 A65 B32 SMOOTH This command smooths the data in the active buffer window Its function is the same as Smooth under the Calculate menu A five point area preserving binomial smoothing algorithm is used The original contents of the buffer are lost START This command initiates data collection in the selected Detector This function is the same as Start under the Acquire menu START_OPTIMIZE For the DSP type only this starts the optimize function for the detector START_PZ This starts the pole zero function for the detector It is automatically included in the optimize function Not supported on all MCBs STOP This command stops data collection in the active Detector If the Detector has already been stopped no operation occurs This command has the same function as Stop under the Acquire menu STOP PZ This stops
187. ptimize function is complete DSPEC only WAIT_CHANGER Waits until the sample ready signal on the rear panel is present 124 6 JOB FILES WAIT_PZ Waits until the pole zero function is complete DSPEC only ZOOM lt i gt Changes the size of the MAESTRO window to minimized normal or maximum ZOOM lt x y w h gt Changes the position and size of the MAESTRO window to the stated values 6 3 JOB File Variables Variables have been added to the Jos file features to allow more flexibility and control of the JOBS These variables are defined by the program or by operator entries They can be used anywhere in the Jos file For example FullPath D USER SOIL SAM001 SPC then FullBase D USER SOIL SAM001 FileExt SPC FileDir D USER SOIL ShortPath SAM001 SPC ShortBase SAMOO1 The following variables are expanded in JOB file strings FullPath Full pathname of the spectrum file FullBase Full pathname of the spectrum without the and extension FileExt File extension of the spectrum file without the FileDir Directory of the spectrum file without the last backslash O McaDir MAESTRO directory without the last backslash CurDir Starting current directory of MAESTRO Loop Current value of the loop counter zero based Loop1 Loop counter plus 1 Bel ASCII bell character CR ASCII carriage return character FF ASCII form fee
188. put so the password will be available for use in the JOB The OWNER variable is only used when locking detectors Following is an example 129 MAESTRO 32 V6 A65 B32 ASK_PASSWORD LOCK password owner Name BEEP lt freq gt lt duration gt This command produces an audible tone at a pitch of lt freq gt Hertz lasting for lt duration gt milliseconds For example BEEP 1000 1000 is a nicely annoying alarm while BEEP 50 50 is a short burp This command is disabled by Windows if any sound software is used It should be used with caution if other sound producing software is running BEEP ID A numerical ID is given based on a desired system event For example BEEP 7 will exit Windows ID Event 0 Beep Speaker 1 Default Beep 2 Start Windows 3 Asterisk 4 Exclamation 5 Critical Stop 6 Question 7 Exit Windows BEEP String String can be a wav file or any event defined in the Registry CHANGE_SAMPLE This command is used to control the CHANGE SAMPLE output and SAMPLE READY input BNC signals on the rear panel of MCBs with sample changer control e g DSPEC 919E and is intended to initiate a hardware handshake sequence for advancing a sample changer The SET_OUTPUT_HIGH command is sent to the currently selected Detector then the sample ready status is monitored for at least 120 seconds until the input is low and finally the SET_OUTPUT_LOW command is sent and input is monitored until it
189. r as an argument to the function as long as it is set in quotation marks For example you could use the loop counter to collect a series of spectra with increasing ROI peak counts by appending zeroes to the loop counter to obtain 1000 counts then 2000 and so on SET_PRESET_ INTEGRAL lt counts gt This command sets the ROI Integral count preset value for the active Detector The preset is set to the entered value With this preset condition the Detector stops counting when the sum of all counts in all channels marked with an ROI reaches this limit If no ROIs are marked in the Detector the Detector never meets this condition This command has the same function as the ROI Integral field on the Presets tab under Acquire MCB Properties refer to Section 4 2 7 for additional information 138 6 JOB FILES The JOB processor expects one or more numerals as the argument to this command entered with or without quotation marks e g you can enter the numerals 1000 or the string 1000 The JOB processor will also accept the loop counter as an argument to the function as long as it is set in quotation marks For example you could use the loop counter to collect a series of spectra with increasing ROI integral counts by appending zeroes to the loop counter to obtain 1000 counts then 2000 and so on SET_PRESET_LIVE lt seconds gt This command sets the Live Time preset for the active Detector The preset is set to the entered value With this c
190. r in the text field and click the right mouse button to open the menu shown in Fig 20 Select a function from the menu with the left mouse button 24 Undo Cut Copy Paste Delete Select All Fig 20 Right Mouse Button Menu for Dialogs 4 MENU COMMANDS This chapter describes the MAESTRO 32 menu commands and their associated dialogs As is customary for Windows menus the accelerator s if any are shown to the right of the menu function they duplicate Also the underlined letter in the menu item indicates a key that can be used together with the lt Alt gt key for quick access in the menu So for example the Compare dialog under File can be reached with the key sequence lt Alt F gt lt Alt C gt The ellipsis following a menu selection indicates that a dialog is displayed to complete the function Finally a small arrow gt following a menu selection means a submenu with more selections will be shown The menus and commands covered in this chapter in the order they appear on the menu bar are File page 27 Settings Recall Save Save As Export Import Print ROI Report Compare Exit About MAESTRO Acquire page 42 Start Alt 1 Stop Alt 2 Clear Alt 3 Copy to Buffer Alt 5 Download Spectra View ZDT Corrected F3 MCB Properties Calculate page 84 Settings Calibration Peak Search Peak Info Input Count Rate Sum Smooth Strip
191. red Select the Nuclide and Energy from the droplists The Nuclide list contains all the nuclides in the working library The Energy list shows all the gamma ray energies for the selected nuclide in the library The MDA field is labeled Correction because MAESTRO does not use efficiency In this case the Eff value is set to 1 0 The Yield value is taken from the library If the Correction value entered is the actual MDA times the efficiency known from other sources the MDA preset will function normally 4 2 7 2 digiDART Amplifier Figure 56 shows the Amplifier tab This tab contains the controls for Gain Baseline Restore Preamplifier Type Input Polarity and optimization Be sure that all of the controls on the tabs have been set before clicking the Start Auto optimize button NOTE The changes you make on this tab take place immediately There is no cancel or undo for this dialog 59 MAESTRO 32 V6 A65 B32 Gain Set the amplifier coarse gain by selecting from the Coarse droplist Field Data About Status Presets MDA Preset Nuclide Report then adjust the Fine gain with the Amplifier Ampifier2 ADC Stabilizer HighVoltage horizontal slider bar or the edit box in Sa A ete RE the range of 0 45 to 1 00 The resulting 045 100 uo j Stata effective gain is shown at the top of the Aerea aos A Stop Auto Gain section The two controls used Zon AMENO si together cover the entire rang
192. red in powers of 2 e g 8192 4096 2048 The up down arrow buttons step through the valid settings for the digiDART Upper and Lower Level Discriminators In the digiDART the lower and upper level discriminators are under computer control The Lower Level Discriminator sets the level of the lowest amplitude pulse that will be stored This level establishes a lower level cutoff by channel number for ADC conversions Setting that level above random noise increases useful throughput because the MCB is not unproductively occupied processing noise pulses 63 MAESTRO 32 V6 A65 B32 The Upper Level Discriminator sets the level of the highest amplitude pulse that will be stored This level establishes an upper level cutoff by channel number for ADC conversions Stabilizer The digiDART has both a gain stabilizer and a zero stabilizer see Sections 4 2 7 4 and 4 2 7 5 The Stabilizer tab Fig 59 shows the current values for the stabilizers The Field Data About Status Presets MDA Preset Nuclide Report value in each Adjustment section Amplifier Amplifier2 ADC Stabilizer HighVoltage shows how much adjustment is currently EE e sine TT Gain Stabilization Enable TT Zero Stabilization Enabled applied The Initialize buttons set the pi drei Sato A i rai pat A ia E i E adjustment to 0 If the value approaches Rc sinter 90 or above the amplifier gain should Width 1 Width 1 be adjusted s
193. rocess If the peak is moved by this command use the amplifier fine gain control lt Alt gt or lt Alt gt to move the peak to the desired channel When starting a new system the zero initialize command should also be given before starting the gain stabilization The Suggest button is used to set the peak center and peak width of the peak area used by the stabilizer Before selecting this command the ROI must be marked and the marker put in the region to be used When operating the peak will be centered in the ROI After the region has been recorded the stabilization is turned on If the stabilization is turned on when this command is executed the old stabilization region is replaced by the new peak defined by the marker and stabilization continues using the new peak 79 MAESTRO 32 V6 A65 B32 The Gain Stabilizer Enabled checkbox enables or disables the gain stabilization It can only be turned on after the Suggest button has been used to select a working peak 4 2 7 5 Zero Stabilization The Zero Stabilizer function enables you to control the zero level or offset stabilizer on Detectors so equipped The zero level stabilizer uses a peak in the spectrum to monitor the changes in the zero level of the system amplifier The zero stabilizer controls the offset bias level so the peak will be maintained in its original position The input pulse height to channel number relationship is Channel number Intercept Gain p
194. rum View is always logarithmic In the Expanded Spectrum View use the menus right mouse button menu accelerator keys and Toolbar to choose between logarithmic and linear scales change both axis scales by zooming in and out and select which region of the spectrum to view The spectrum display can be expanded to show more detail or contracted to show more data using the Zoom In and Zoom Out features Zooming in and out can be performed using the Toolbar buttons the Display menu commands or the rubber rectangle see Section 3 5 3 The rubber rectangle allows the spectrum to be expanded to any horizontal or vertical scale The baseline or zero level at the bottom of the display can also be offset with this tool allowing the greatest possible flexibility in showing the spectrum in any detail These replace the Narrower Wider and Shorter Taller commands in older versions of MAESTRO 16 3 GETTING STARTED The Toolbar and Display menu zoom commands offer a quick way to change the display These change both the horizontal and vertical scales at the same time Zoom In decreases the horizontal width by about 6 of full width ADC conversion gain and halves the vertical scale The Zoom In button and menu item zoom to a minimum horizontal scale of 6 of the ADC conversion gain Zoom Out increases the horizontal width by about 6 of full width ADC conversion gain and doubles the vertical scale The accelerator keys have also changed K
195. rum or buffer window MAESTRO will ask if you wish to close the oldest window of that type Alternatively you can turn off the Multiple Windows feature and run in the original one window at a time mode 14 3 GETTING STARTED Spectrum windows can be moved sized minimized maximized and closed with the mouse as well as tiled horizontally or vertically from the Window menu When more than one window is open only one is active available for data manipulation and analysis at a time The title bar on the active window will normally be a brighter color than those on the inactive windows the color scheme will depend on the desktop colors you have selected in Windows Control Panel Detector windows or buffer windows containing a spectrum from an MCB will list the Detector name on the title bar If you have opened a spectrum file into a buffer window the title bar will display the filename To switch windows click on the window that you wish to activate use the Window menu see Section 4 7 or cycle between windows by pressing lt Ctrl Tab gt Each spectrum window contains a Full Spectrum View and an Expanded Spectrum View see items 6 and 7 below The Full Spectrum View shows the full histogram from the file or the Detector memory The vertical scale is always logarithmic and the window can be moved and sized see Section 3 5 4 The Full Spectrum View contains a rectangular window that marks the Fig 8 Contents of Expanded Sp
196. ry for the program to use either with directly File Diractoni entered character strings or by selecting from the list of macros shown in Program Directory Fig 28 The list is displayed by clicking on the arrow button to the right MAESTRO Directory of the Initial Directory field Current Directory Fig 28 Import File Directory Macros This is the directory selected in the filename selection dialog when the import file is selected e g c user spectrum Program Directory This is the directory for the conversion program It is shown in the first entry of this dialog MAESTRO Directory This is the directory where the MAESTRO program is stored Usually this is c Program Files MAESTRO Current Directory This is the current default directory for Windows Default The default extension entered here is used as the extension for the filename in the filename entry dialog For example if you enter TXT the name list in the entry dialog will be TXT 32 3 MENU COMMANDS Run Options These three radio buttons Minimized Maximized and Normal Window are used to select the window for the program If the program does not have any user dialogs any option can be selected If the program needs user inputs Normal Window should be selected 4 1 1 4 Directories Use this tab Fig 29 to select the default file directories for libraries calibrations JOB files and other GammaVision file types To change the path Location o
197. s WINGO ZOOMING AAA rat 106 O Mate ROL Gy Geet argos Os et Cad pen Se ts Me gto Ree dan te ae aig A pM ahaa a ete eae 106 4 8 9 Clear ROI al ria lira ai edo 106 dis 40 PERIS REA ARAS EE TAREA AA ARA 106 AS AL Input Count Rate iras aia rats 107 O O o RI TO S D 107 48 49 MCB Properties scien yet ei ee e 107 5 KEYBOARD COMMANDS wists oltre oleole 109 Sl Introduction tds baba atln SA alk ORS GWG RO A LR Bae 109 5 2 Marker and Display Function Keys 4acce0 42 rides 109 5 2 1 Next Channel A A LE eas 109 Se INC ROL A SN oil a 112 o o INS PAK areale A 112 TABLE OF CONTENTS 5 2 4 Next Librat y A A oben 112 523 First Last A A 112 5 2 6 Jump Sixteenth Screen Width lt a caw va 113 5 2 fe NMS ert OLS Siang hs ts ahd ee OE ne de e oe 113 5328 Clear RON A Wave wi WG ee GAA ANG ei 113 5 2 9 Taller SOME cose oon dees tks eG ERA ae ee EE EES AEN OSL ERS 113 5 2 10 Compare Vertical Separation 0 ccc cece ene 114 2d Zoom IZ OM ir A a ONR 114 D2 A Gales eee he eh Eee eeu UE ee Ou aN aa 114 5 2 13 Fine Gain Large Move lt a Mune tae nore eka eile bao eed bane Lee bay 114 SIA Sereen Capture bates a ee he 115 5 3 Keyboard Number Combinations siria ae ata dag aan 115 Dla UAL RR we cba seria PER PERO PIO PROPIO apt FEO IR IO anced 115 SE SIONI RITTER 115 SRI ERE PINO REPAIR ORRORE FIORIRE ORI o aerate 115 dA Copy to BUT Stadt das 115 Dod Detector DU ito eredi 116 53 6 Narrower Wider 2 fe Lietta ae 116 Sd PUN CULOS a eter
198. s capable printing devices supported by Windows i e hardcopy is not limited only to plotters WINPLOTS allows you to select and set up the printer In the interactive mode a preview of the spectrum plot is automatically displayed on the screen and updated as changes are made to the display parameters The operator can select the start and stop channels or energy range for the plot the printer to be used whether the plot will be in logarithm mode or linear mode and whether to specify the scale maximum in linear mode or use automatic scaling If a color printer is used the colors of the different parts of the plot can be selected The sample detector and acquisition descriptions in the file can be plotted or suppressed ROIs can be plotted when stored in the spectrum spPc file or in a separate ROT file To start WINPLOTS click on Start on 3 Accessories the Windows Taskbar then Programs j Programs HS DOS Fromat MAESTRO 32 and WinPlots see TIT N MAESTRO for Windows Fig 106 WINPLOTS can also be run Documents S MCB Configuration in command line mode for use in JOB a files or directly from other Windows programs see Section 7 1 3 In this mode the settings can be specified or the defaults can be used Favorites e N b Li Settings i A Find Help The spectrum files are associated with WINPLOTS by the installation program so double clicking on a spectrum filename within W
199. s made The person named has locked the Detector Do you want to save buffer A function that would destroy the buffer such as COPY or EXIT queries you unless the buffer has not been modified since last being saved DOS Application The Windows Error 13 was detected An attempt was made to run a DOS application in Windows Error modifying ROI on this Detector The ROI cannot be modified on locked Detectors or on Detectors that are collecting data Error opening file If trying to write a file this would indicate a disk controller problem such as a full disk If trying to read a file this would indicate that the filename specified could not be found Error reading file STRIP aborted Could not read the file requested for stripping Error reading file File read error is usually a result of damaged media Error writing file File write error is usually a result of damaged media or full disk EXE for an earlier version of Windows The Windows Error 15 was detected 167 MAESTRO 32 V6 A65 B32 Failure obtaining ROI or Peak A function that requires a defined ROI or peak in the case of the Calibration function when the Marker is not placed in a channel with an ROI bit set and if a peak is not very close by Failure of Detector function This error arises from a JOB that encounters an error when trying to access an Detector File already exists If the file output function requested would write a file
200. s the average of the first three channels of the ROI see Fig 76 The channel number for this background point is the middle channel of the three points The background on the high channel side of the peak is the average of the last three channels of the ROI The channel number for this background point is also the middle channel of the three points These two points on each side of the peak form the end points of the straight line background 87 MAESTRO 32 V6 A65 B32 l h Fig 76 Background Calculation Details The background is given by the following 1 2 h Baloo y E pea 0 i i h 2 6 where B the background area I the ROI low limit h the ROI high limit C the contents of channel i 6 the number of data channels used three on each end The gross area is the sum of all the channels marked by the ROI according to the following h A 2 C 2 where A the gross counts in the ROI I the ROI low limit h the ROI high limit C the contents of channel i 88 3 MENU COMMANDS The adjusted gross area is the sum of all the channels marked by the ROI but not used in the background according to the following h 3 A 2 C 3 i 1 3 where Aag the adjusted gross counts in the ROI the ROI low limit h the ROT high limit C the contents of channel i 1 The net area is the adjusted gross area minus the adjusted calculated background as follows _ B h 1 5 n ag h 1 1 4 Th
201. s to ensure that no previous presets left over from other users will interfere with this analysis Now start the acquisition and wait for completion of the live time START WAIT During this time the display manipulation keys are active so that the spectrum can be studied while collection is taking place Now move the spectrum from the Detector to the MAESTRO buffer Select the buffer for the computational step FILL BUFFER SET DETECTOR 0 In this step the nuclide peak of interest is being marked by reading in an ROI file This ROI file has been previously defined by looking at the spectrum and marking the peak or the region around the peak This ROI data is saved on the disk under the name DECAYPK ROI This JOB file will work on different peaks or nuclides just by changing the ROI file RECALL ROI DECAYPK ROI The peak areas of the marked peak or peaks is printed on the printer by this command REPORT PRN This gives a list of the peak areas and count rates for the marked peak If the library LIB McB has a peak near this energy then the peak identity will also be printed The set of instructions as written so far will only collect and report once There are two ways to make the process repeat itself for a series of samples The first and hardest is to write one set of the above instructions for every sample in the series A much more efficient way is to use the LOOP command To use this put LOOP before CLEAR a
202. se PCs are configured to grant remote access 3 To learn more about exceptions to the Windows Firewall click on the What are the risks of allowing exceptions link at the bottom of the dialog 4 Click on OK to close the dialog No restart is required 10 2 INSTALLING MAESTRO 32 Windows Firewall Ea General Exceptions Advanced Windows Firewall is blocking incoming network connections except for the programs and services selected below Adding exceptions allows some programs to work better but might increase your security risk Programs and Services Name O Remote Assistance O Remote Desktop O UPnP Framework File and Printer Sharing Add Program Add Port Edit Y Display a notification when Windows Firewall blocks a program What are the risks of allowing exceptions Cancel Fig 5 Turn on File and Printer Sharing 2 2 Enabling Additional ORTEC Device Drivers You can enable other device drivers later with the Windows Add Remove Programs utility on the Control Panel Select Connections 32 from the program list choose Add Remove then elect to Modify the software setup This will reopen the Instrument Setup dialog so you can mark or unmark the driver checkboxes as needed close the dialog then re run the MCB Configuration program as described in Step 8 on page 9 11 MAESTRO 32 V6 A65 B32 12 3 GETTING STARTED This chapter tells how to start MAESTRO explains
203. spc tt nai 0031 Spc th cd gmyv1 spe th uran1 6h sp N11089ac spe be P10633ab spc Ya Qcd1 mgyv spe N30201b spe Yu p20666ac spe te Test spc A File name N71 calb spc Files of type SPC Format Spectra hed Cancel M Show Description Integer SPC Format 16384 Channels N71back spc N71calb spc i Gamma calibration source on endcap 7 UTILITIES P5041901 spc Testl spc tye pa234m16 Spc th Test2 spe Fig 109 The Recall Spectrum File for Plotting Dialog Figure 110 shows the Recall a settings file dialog All of the settings specified on the Options Plot dialog can be saved in the settings file The file is saved in the Save Settings menu item Various groups of settings can be saved and recalled here to make the desired plots or to be used in the command line mode The Print Plot dialog is shown in Fig 111 The printer can be selected here from the list of available Windows printers The Properties button displays a dialog for setting the printer properties and is different for each printer The number of copies can be selected to make multiple copies This number is reset to 1 after each print session Recall a settings file Look in a Tmpl m sa RedPlot set File name RedPlot set Files of type Settings Files y Cancel Fig 110 The Recall a Settings File Dialog Print Plot x r Printer Name HP DeskJet 550C Printer 2 Status Defau
204. ssed in the next paragraph Enhanced Throughput Mode See Fig 48 DSPEC Pro Amplifier PRO Tab the DSPEC Pro hardware user s manual for a discussion of this feature The valid Protection Time settings in 25 ns increments are e LFR mode off 1 1 us to 48 4 us e LFR mode on 3 0 us to 145 2 us Turning on this feature automatically sets the minimum protection time highest throughput rate based on your current Rise Time and Flattop settings however you can adjust this value at any time Each time you change the rise time or flattop the DSPEC Pro will automatically set itself to the new minimum protection time Training the Resolution Enhancer The resolution enhancer can help alleviate the low side peak tailing that results from increased charge trapping see the discussion in the DSPEC Pro hardware manual This function will not improve low resolution due to other causes and might exacerbate the problem 1 Set the bias gain rise time flattop and PZ as you would for data collection 2 If you wish to use LFR Mode turn it on 3 If you wish to use Enhanced Throughput Mode turn it on and either accept the automatically calculated highest throughput protection time based on the current rise time and flattop or enter the desired setting The latter might require one or more data acquisitions When finished proceed to Step 4 Patent pending 50 3 MENU COMMANDS 4 Clear the MCB and acquire a well iso
205. ste button at the bottom of the nuclide list and change its label to include the name of the cut nuclide This is illustrated for Eu in Fig 123 Fig 123 Cut Nuclide is Ready to Paste 7 2 3 3 Rearranging the Library List The order of the nuclides in the library is the order in which they are listed on the report Nuclides can be rearranged in the library file list by cutting and pasting them into a different location To move a nuclide to a new position in the list highlight the nuclide to be moved Cut it from the list locate the nuclide immediately below the desired new position and click once on that nuclide to highlight it then click on the Paste button which will be labeled with the name of the Cut nuclide The Cut nuclide will be inserted in the space above the highlighted nuclide Several nuclides can be cut at one time from the list then pasted back into the list into a different order Cut nuclides remain queued up for pasting last one first according to the nuclide name on the Paste button To move a nuclide to the end of the library list Cut the nuclide from the list highlight the end entry and click on the Paste button 152 7 UTILITIES 7 2 3 4 Editing Nuclide Peaks When a nuclide is selected in the working library file the right half of the Editing dialog shows the peak list Note the column headers Rank Energy and Percent To sort the peak list by a particular parameter in the list click on
206. t wish to select MCB Properties and click on the InSight section s Start button to adjust the shaping parameters interactively with a live waveform showing the actual pulse shape or just to verify that all is well ADC This tab Fig 58 contains the Gate Conversion Gain Lower Level Field Data About Status Presets MDA Preset Nuclide Report Discriminator and Upper Level Amplifier Ampifier2 ADC Stabilizer HighVoltage Discriminator controls In addition th SE ES sl sS 3 DE addition the Gate Conversion Gain MEN current real time live time and count off rate are monitored at the bottom of the penis le Ei dialog Upper Level Disc 16383 Gate The Gate control allows you to select a Real Time Live Time 304 92 295 40 Count Rate 901 l logic gating function With this function Off no gating is performed that is all detector signals are processed with the function in Coincidence a gating input Fig 58 digiDART ADC Tab signal must be present at the proper time for the conversion of the event in Anticoincidence the gating input signal must not be present for the conversion of the detector signal The gating signal must occur prior to and extend 500 nanoseconds beyond peak detect peak maximum Conversion Gain The Conversion Gain sets the maximum channel number in the spectrum If set to 16384 the energy scale will be divided into 16384 channels The conversion gain is ente
207. tabilizer Before selecting this command the ROI must be marked and the marker put in the region to be used When operating the peak will be centered in the ROI After the region has been recorded the stabilization is turned on If the stabilization is turned on when this command is executed the old stabilization region is replaced by the new peak defined by the marker and stabilization continues using the new peak 80 3 MENU COMMANDS The Zero Stabilizer Enabled checkbox enables or disables the zero stabilization It can only be turned on after the Suggest button has been used to select a working peak 4 2 7 6 ZDT Zero Dead Time Mode An extended live time clock increases the collection time real time of the acquisition to correct for input pulse train losses incurred during acquisition due to system dead time This corrected time value known as the live time is then used to determine the net peak count rates necessary to determine nuclide activities As an example consider the case where the spectrometry amplifier and ADC are 25 dead during the acquisition If a live time preset of 100 seconds is selected the spectrometer counts for a total of 133 33 seconds real time The extra 33 33 seconds make up for the gamma rays lost due to system busy time The total counts in a peak can then be divided by 100 to determine the number of gamma rays per second recorded in the spectrum Unfortunately extending the counting time to m
208. tate of Health This is OK if the HV supply in the DIM has stayed within 200 V of specified bias voltage since the last time the SOH was cleared 55 MAESTRO 32 V6 A65 B32 Shutdown State of Health This is OK if the detector shutdown has not activated since the last time the SOH was cleared Preamplifier overload State of Health This is OK if the preamplifier overload has not activated since the last time the SOH was cleared Security State of Health This is OK if the security test was passed at the end of the last spectrum acquisition This is available only for SMART 1 detectors Power State of Health This is OK if the power to the DIM was constant during the last spectrum acquisition 24 volts This is the current value of the 24 volt supply in the DIM as delivered to the detector 12 volts This is the current value of the 12 volt supply in the DIM as delivered to the detector 12 volts This is the current value of the 12 volt supply in the DIM as delivered to the detector 24 volts This is the current value of the 24 volt supply in the DIM as delivered to the detector High Voltage This is the current value of the high voltage bias supply in the DIM as delivered to the detector Detector temperature This is the detector temperature at the time the current spectrum acquisition stopped This is available only for SMART 1 detectors Live detector temperature This is the detector temperature at the current time
209. ted on the display than there are pixels horizontally in the window the marker will move by more than one memory channel at a time even with the smallest possible change as performed with the lt gt and lt gt keys If true single channel motions are required the display must be expanded as described above In addition to changing the scaling of the spectrum the colors of the various spectrum features e g background spectrum ROIs can be changed using the Display menu 3 4 The Toolbar The row of buttons below the Menu Bar provides convenient shortcuts to some of the most common MAESTRO menu functions The Recall button retrieves an existing spectrum file This is the equivalent of selecting File Recall from the menu 17 MAESTRO 32 V6 A65 B32 E Save copies the currently displayed spectrum to disk It duplicates the menu functions File Save or File Save As depending on whether the spectrum was recalled from disk and whether any changes have been made to the spectrum window since the last save e Start Acquisition starts data collection in the current Detector This duplicates Acquire Start and lt Alt 1 gt le Stop Acquisition stops data collection This duplicates Acquire Stop and lt Alt 2 gt Clear Spectrum clears the detector or file spectrum from the window This duplicates Acquire Clear and lt Alt 3 gt E ES Mark ROI automatically marks an ROI in the spectrum at the marker
210. tered character strings or you can select from the list of macros shown in Fig 24 The list is displayed by clicking on the arrow button to the right of the Arguments field 3 MENU COMMANDS File Settings 24 x General Export Import Directories Export Program C MAEA SPEDAC Ace_spe exe Browse Arguments FulPath ShortB ase asc gt Initial Directory S CurDin gt Run Options Minimized Maximized Normal Window Cancel Fig 23 Export Tab Entries macros or direct must be separated by spaces to be read as separate arguments File Path Name This will insert the complete file pathname e g c user spectrum test chn into the dialog box The filename is the name selected in the filename entry dialog File Base Name This will insert the file path name without the extension e g c user spectrum test into the dialog box The filename is the name selected in the filename entry dialog The extension can be entered manually after the macro e g FullBase CHN into the dialog box Note that the dot must also be entered Related filenames can also be made by adding characters before the dot e g FullBase A CHN Short Name File Path Name File Base Name Short Name Short Base File Extension Fig 24 Export Argument Macros This will insert the filename e g test CHN into the dialog box The filename is the name selected in the filename e
211. termination of the optimum tilt values As all of the values for all the combinations are maintained in the DSPEC Pro the optimize function does not need to be repeated for each possible rise time The optimization can take from 1 to 10 minutes depending on count rate Patent number 5 872 363 Patent number 5 821 533 47 MAESTRO 32 V6 A65 B32 You should repeat the optimization if you change the flattop width The effect of optimization on the pulse can be seen in the InSight mode on the Amplifier 2 tab Note however that if the settings were close to proper adjustment before starting optimization the pulse shape may not change enough for you to see In this situation you also may not notice a change in the shape of the spectrum peaks The most visible effect of incorrect settings is high or low side peak tailing or poor resolution Amplifier 2 Figure 47 shows the Amplifier 2 tab which ASESESO the advanced DSPEC High Voltage About Status Presets MDA Preset Pro shaping controls including the Amplifier Amplifier2 AmpifierPRO ADC Stabilizer InSight Virtual Oscilloscope mode conventional analog spectroscopy Rise Time Flattop 1200 Width 0 80 A aa Plomo Pole Zero InSight CSia Stop amplifier Thus a DSPEC Pro value of 12 us corresponds to 6 us ina Fig 47 DSPEC Pro Amplifier 2 Tab conventional amplifier Starting with the nominal value of 12 0 you should increase values of
212. the Ask on Save see File Settings fields are turned on MAESTRO will ask the corresponding questions when SAVE commands are executed in the JoB file This means that execution of the JOB file will stop until the entry is made The ASK commands will also stop the JOB file and prompt you to enter the requested information The JOB file will continue when you click on OK or press lt Enter gt on the dialog 119 MAESTRO 32 V6 A65 B32 The input is used or stored immediately before the next JOB instruction except for the ASK_SPECTRUM command NOTE Asisthe case when saving with the menu or toolbar commands if you choose Cancel when responding to an ask on save prompt the entire save operation is canceled for that particular spectrum 6 1 4 Password Locked Detectors When JOB files are used with locked Detectors the first time a destructive command is used on the locked Detector you will be prompted for the password Alternatively you can use the ASK PASSWORD command at the beginning of the JOB From then on while the Jos file executes the password is retained and you will not receive a prompt When the JOB file quits the password is forgotten 6 1 5 JOB Files and the New Multiple Detector Interface This release of MAESTRO allows you to open eight Detector windows and eight buffer windows at one time However as in previous MAESTRO releases there is no limit on the number of Detectors that can be operated using
213. the rise time values for the determination of the optimum tilt values As all of the values for all the combinations are maintained in the digiDART the optimize function does not need to be repeated for each possible rise time The optimization can take from 1 to 10 minutes depending on count rate You should repeat the optimization if the flattop width is changed The effect of optimization on the pulse can be seen in the InSight mode on the Amplifier 2 tab Note however that if the settings were close to proper adjustment before starting optimization the pulse shape might not change enough for you to see In this situation you also might not notice a change in the shape of the spectrum peaks The most visible effect of incorrect settings is high or low side peak tailing or poor resolution Amplifier 2 Figure 57 shows the Amplifier 2 tab which accesses the advanced digiDART shaping controls including the InSight Virtual Oscilloscope mode which is discussed in Section 4 2 7 3 The many choices of Rise Time allow you to precisely control the tradeoff between resolution and throughput Section 4 2 7 6 discusses this tradeoff and contains a guide to choosing rise time according to count rate The value of the rise time parameter in the digiDART is roughly equivalent to twice the integration time set on a conventional analog spectroscopy amplifier Thus a digiDART value of 12 corresponds to 6 in a conventional amplifier Starting with the n
214. thmic and linear modes This function is duplicated by Keypad lt gt and the Log Linear Display button on the Toolbar 4 6 4 Automatic Automatic switches the Expanded Spectrum View to a linear scale that is automatically adjusted until the largest peak shown is at its maximum height without overflowing the display It also toggles the vertical scale of the spectrum display between the automatic and manual modes If the logarithmic scale was enabled the display is switched to linear This function is duplicated by Keypad lt gt and the Vertical Auto Scale Toolbar button 4 6 5 Baseline Zoom When you select Baseline Zoom the baseline of the spectrum displayed in the expanded view is always zero counts In this mode a checkmark is displayed beside the item name on the menu When Baseline Zoom is off no checkmark beside the item name the baseline can be offset to a higher value This is useful to show small peaks on a high background When the baseline is offset the box in the Full Spectrum View is raised above the baseline to show the offset This is duplicated on the toolbar and right mouse button menu 4 6 6 Zoom In Zoom In adjusts the horizontal and vertical scales in the tos A H Expanded Spectrum View to view a smaller portion of z x the spectrum The vertical scale is divided by two and aa yee E a the horizontal scale is reduced by about 6 of the full ORO Sonar horizontal scale The current horizontal and vertical
215. ting methods 5 3 Keyboard Number Combinations NOTE Only the keyboard numbers will function in the following combinations The keypad number keys will not perform these functions 5 3 1 Start lt Alt 1 gt lt Alt 1 gt starts the acquisition in the selected Detector Any presets desired must be entered before starting acquisition This accelerator duplicates the Start Toolbar button the Start command on the right mouse button menu and Acquire Start 5 3 2 Stop lt Alt 2 gt lt Alt 2 gt stops acquisition in the selected Detector This duplicates the Stop Toolbar button the Stop command on the right mouse button menu and Acquire Stop 5 3 3 Clear lt Alt 3 gt lt Alt 3 gt clears the displayed Detector s histogram data and its descriptors e g real time live time This accelerator duplicates the Clear Spectrum Toolbar button the Clear command on the right mouse button menu and Acquire Clear 5 3 4 Copy to Buffer lt Alt 5 gt lt Alt 5 gt copies the histogram data from the selected Detector to the buffer along with its descriptors e g live time real time and displays the spectrum in a new window This duplicates the Copy to Buffer Toolbar button the Copy to Buffer command on the right mouse button menu and Acquire Copy to Buffer 115 MAESTRO 32 V6 A65 B32 5 3 5 Detector Buffer lt Alt 6 gt lt Alt 6 gt switches the display between the histogram of the spectrum in the sel
216. tings 46 48 anticoincidence Lean ara tarso naa 51 COMCIAONCO dera aos 51 Enhanced throughput mode 50 DANDO i AIRIS TAI 51 high voltage setup 53 live time preset scossa Bee eee DEE does 57 low frequency rejector LFR 50 lower level discriminator 52 MDA prest meresi r esine e Iaa a 58 OPI e a r aA EE SAR ee ows Ai 47 overflow preset y 2 46vaake hehe sae dows 58 preamplifier type 5360 00 cee isos 47 real time preset oss cd v40h4 hee alzare 57 Resolution Enhancer 50 ROI integral preset 58 ROI peak count preset 58 stabilizer Setup cesta tasa ead dees 52 uncertainty preset sicario tartas 58 upper level discriminator 52 zero dead time ZDT mode 52 Enhanced Throughput Mode 50 PKI Sie a enaa SI one ETE E R ER 42 Expanded Spectrum View 15 16 MAESTRO 32 V6 A65 B32 Export arguments sp oes ona dole ee 29 VI AIAR REI RIS ARA ARR MERONI II 28 A ae 39 Field Data HADAS 65 File IO slo 28 O ao o 31 MAESTRO file locations 33 recall spectrum nonn eee ae ews 33 save spectrum lla 34 Wale se sete odes carat toa dea eed alah as 27 AAA e e a O o OAST 27 WM SOU ERRE ZARE ade ac scat e dea e ee 114 PAULO ab tes eo Aba ae eases ek Gece ote 49 77 78 1 BARESE RISE ory ee VORREI 47 49 78 WGA ERI RE RES ARR ARRE oe 48 49
217. tions binary format Spectrum Files CHaNnels MAESTRO style spectral data file binary format SPeCtrum Spectrum with full analysis settings calibration descriptions and other parameters Inform type binary format ROT channel pairs created by the ROI Save File function binary format Miscellaneous Files LIBrary nuclide library Inform style binary format RePorT output of analysis engine ASCII text TeXT general ASCII text files used by File Print ASCII text providing commands for the Services JOB Control function B 2 Program Examples The following examples show how to read CHN data files and ROI region of interest files These are simple program segments to illustrate the programming details needed 159 MAESTRO 32 V6 A65 B32 B 2 1 FORTRAN Language This section contains two routines one to access the CHN files and one to access the ROI files B 2 1 1 CHN Files C This program prints the header data from a GammaVision data file C and the contents of a channel C INTEGER 2 TYPE MCA SEG STRTCH LNGTDT SPCOUI 64 INTEGER 2 BEGREC ENDREC INTEGER 2 TLRTYP IS INTEGER 4 SPCIN 32 LVETME RLTIME REAL 4 ENG 2 FW 2 X1 CHARACTER 1 SRTTME 4 SRTSEC 2 SRTDTE 8 OUTPUT 30 C C START C WRITE 0 100 100 FORMAT 29X SPECTRUM PRINT ROUTINE C Open the spectrum file OPEN 1 FILE STATUS OLD A
218. to 32 Input Polarity The Input Polarity radio buttons select the preamplifier input signal polarity for the signal from the detector Normally GEM p type detectors have Needs Auto Opti Fig 46 DSPEC Pro Amplifier Tab a positive signal and GMX n type have a negative signal Baseline Restore The Baseline Restore is used to return the baseline of the pulses to the true zero between incoming pulses This improves the resolution by removing low frequency noise from dc shifts or mains power ac pickup The baseline settings control the time constant of the circuit that returns the baseline to zero There are three fixed choices Auto Fast and Slow The fast Patent number 5 912 825 46 3 MENU COMMANDS setting is used for high count rates the slow for low count rates Auto adjusts the time constant as appropriate for the input count rate The settings Auto Fast or Slow are saved in the DSPEC Pro even when the power is off The time constant can be manually set on the InSight display see the discussion in Section 4 2 7 3 You can view the time when the baseline restorer is active on the InSight display as a Mark region see the discussion on Marks page 77 In the automatic mode the current value is shown on the InSight sidebar Fig 67 For a low count rate system the value will remain at about 90 Preamplifier Type Use the Preamplifier Type section to choose Transistor Reset or Res
219. to obtain a command from the executing Jos file This is JOB Error 1 Job Error A generic error message indicating that an error was encountered while executing a JOB file Usually some explanatory phrase is given Job waiting for end of acquisition The JOB is waiting for a Detector to stop counting Job waiting for completion of program The JOB is waiting for the stated program to end Library requires separate This is Windows Error 6 Library too large to load An attempt was made to use a large library for the working library Use the Nuclide Library Editor program Start Programs MAESTRO 32 Nuclide Library Editor see Section 7 2 to make a smaller working library A large library can be used as the master library in the edit function to create a working library MCBCIO error This error indicates a software problem Must choose separated peaks This error arises when a calibration is attempted using two identical or too closely positioned peaks Must have a value greater than zero The input value must be positive and non zero Must select 92X type Detector This error results from an attempt to perform a function available only for 92X type Detectors Must select OCTETE type Detector This error results from an attempt to perform a function available only for OCTETE type Detectors 170 APPENDIX C ERROR MESSAGES Need an ROI at the desired peak location The Stabilizer function requires a v
220. tor If the Detector is not active the entry is grayed The Detector can also be stopped with the accelerator lt Alt 2 gt the Stop Acquisition button on the Toolbar and the Stop command on the right mouse button menu 4 8 3 Clear Clear erases the spectral data and descriptors e g real time live time start time in the active Detector or buffer window The presets are not altered This function might not operate on some types of Detectors when they are collecting data The data can also be cleared with lt Alt 3 gt the Clear Spectrum button on the Toolbar or the Clear command on the right mouse button menu 4 8 4 Copy to Buffer The Copy to Buffer function transfers the data and descriptors e g live time real time from the active Detector window to a new buffer window This function can also be performed with lt Alt 5 gt the Copy Spectrum to Buffer Toolbar button or the Copy to Buffer command on the right mouse button menu 4 8 5 Zoom In Zoom In adjusts the horizontal and vertical scales in the Expanded Spectrum View to view a smaller portion of the spectrum If the rubber rectangle is not being used the vertical scale is 105 MAESTRO 32 V6 A65 B32 divided by two and the horizontal scale is reduced by about 6 of the full horizontal scale If the rubber rectangle is being used the display shows only the contents of the rectangle The current horizontal and vertical full scale values are shown on the Tool
221. tor by which file data will be multiplied before being subtracted from spectrum in memory M Use Ratio of Live Times Fig 78 The Strip Spectrum File Dialog NOTE The live times and real times are not changed by any strip operation The peak uncertainty does not include the stripped areas and might not represent the true uncertainty 4 4 Services The Services menu Fig 79 contains several functions and Services utilities Job Control Library gt 4 4 1 Job Control Sample Description Lock Unlock Detector Most of the functions under the various MAESTRO menus can be automated by writing a JOB which consists of one or more commands written in ASCII text see Chapter 6 for an in depth discussion JOBs allow you to easily perform repetitive tasks and or define initial conditions at Detector startup These files are given a filename extension of JoB To start a JOB or edit a Jos file select Services Job Control to display the dialog shown in Fig 80 Edit Detector List Fig 79 The Services Menu To run a JOB select a JoB filename and click on Open The contents of the selected file can be displayed at the bottom of the dialog by using the mouse to mark the Show Contents checkbox 91 MAESTRO 32 V6 A65 B32 Note that displaying the file contents will slow down the accessing of files especially when browsing through a long list Once a JOB is started most menu functions will be disa
222. trum data The integer sPc format should be used unless the files are to be used by earlier versions of ORTEC programs The spc files written by MAESTRO contain the energy calibration data and the hardware parameters The integer format stores the spectrum as 4 byte integers and the floating point format uses the 4 byte exponential format used in the hardware math coprocessor e g 80387 and most languages for the PC The analysis and calibration formats are defined in the File Structure Manual Sample Description allows you to designate the default sample description to be saved with the spectrum 128 character maximum for spc files 63 characters for CHN files If you also mark the corresponding Ask on Save checkbox this description will be presented for acceptance or modification when the spectrum is saved This is a time saver that lets you enter the common descriptors for a group of samples ahead of time then add the unique descriptors on a sample by sample basis after acquisition 4 1 1 2 Export Click on the Export tab to display the screen shown in Fig 23 The program arguments and file directory to be used when the Export function is selected are specified here 28 Choose any program that can accept the spectrum filename as an argument on the command line Use the Browse button to automatically select the complete proper path for the program Arguments The Arguments to the program can be specified as directly en
223. trum peaks with the displayed markers The marker is a solid color rectangle placed at the energy of the gamma ray with the nuclide name shown above the top of the rectangle Fig 97 The markers are shown in both the full view and the expanded view Fig 98 The base of the rectangle is positioned at the level of the background for the peak 1 004 73 keV 80 Cnts The amplitude of the marker for the selected Fig 97 Isotope Markets peak is normally proportional to the peak area However the amplitude can be changed by placing the mouse in the rectangle where it will become a double sided arrow While the double arrow is displayed press and hold the left mouse button and move the pointer higher or lower on the y axis to make the rectangle larger or smaller The amplitude of the marker for the other peaks is proportional to the amplitude of the first peak and the branching ratio As the amplitude of the peak is changed with the mouse all the other rectangles will change proportionally The markers are shown in one of two colors If the peak area calculated in the same manner as for Peak Info is positive indicating the peak was found then the rectangle is one color normally green If the peak area is negative or zero indicating the peak was not found then the rectangle is another color normally blue 101 MAESTRO 32 V6 A65 B32 Maestro digiIDART s n 241 Calibration source 1714 J File Acquire Calculate Servic
224. ts Fig 1 Choose the Interface for Your Instruments If your PC uses Windows 98 SE two additional dialogs might be displayed The first shown in Fig 2 might ask you to insert the ORTEC Installation CD Ignore this message and click on OK Insert Disk 2 Please insert the disk labeled ORTEC Installation CD and then click OK Fig 2 Window Menu 2 INSTALLING MAESTRO 32 The second additional dialog could request a specific file see the example in Fig 3 Browse to the c Program Files Common Files ORTEC Shared UMCBI folder not to the MAESTRO CD then click on OK The installation wizard will resume copying files Insert Disk x The file windryr6 sys on ORTEC Installation CD cannot be found Cancel Insert ORTEC Installation CD in the selected drive and click OK Skip File Copy files from Details Common Files ORTEC Shared UMCBI BR Browse IME lk Fig 3 Window Menu 5 At the end of the wizard restart the PC Upon restart remove the MAESTRO CD from the drive 6 After all processing for new plug and play devices has finished you will be ready to configure the MCBs in your system Connect and power on all local and network ORTEC instruments that you wish to use as well as their associated PCs Otherwise the software will not detect them during installation Any instruments not detected can be configured at a later time 7 If any of the components on the network is a D
225. ttings El ES test to be accepted This test compares the magnitude nyn E of the second difference with the weighted error of the x for PWAdM JE Z channel counts If the second difference is greater than Sensitivity Factor 3 Cancel the weighted error the peak is accepted The Sensitivity Factor is a multiplicative factor in the weighting factor Fig 71 The Calculation Settings This peak search sensitivity can set from 1 to 5 with 1 Dialog being the most sensitive that is 1 finds the most peaks A value of 1 will find small peaks but will also find many false peaks A value of 5 will locate all the big peaks but might miss some of the smaller ones The middle value of 3 is a good choice to start with Enter the integer value or use the up down buttons to the right of the field The current value is shown on the dialog 84 3 MENU COMMANDS 4 3 2 Calibration 4 3 2 1 General The Calibrate dialog Fig 72 is used to establish a multi point calibration for the data memory such that channel position and peak parameters are reported in the specified units as well as channels If two points are entered a linear calibration is done When three or more points are entered a quadratic fit to the entered points up to 96 points is automatically performed The default units are keV but can be any units that you supply as discussed in Section 4 3 2 2 The peak shape is measured and stored for later use in functions such as
226. tton Selecting Range will open the dialog Enter the Range for the Horizontal Axis shown in Fig 115 so you can set the limits for the plot From E as The range of the plot can be either in Channels or ai Energy independent of the plot labeling In order to To 512 000000 easily compare spectra the energy can be set to values cre below the first channel in the spectrum In this case the data below channel 0 are plotted as 0 Fig 115 Horizontal Range Options Dialog Vertical One of the two choices Log and Linear can be selected by clicking on the appropriate radio button The linear scale is set by clicking on Range Tic Marks small lines indicating the scale on the axes can be included Including them makes the plot more readable Grid Lines can also be included The grid lines are lines across the complete height of the plot at the major tic marks When Auto Scale is selected the plot vertical axis is adjusted so that the largest count in the spectrum is near the top of the plot region When Auto Scale is clicked off the Range button is enabled Clicking on Range will display the dialog shown in Fig 116 The value entered will be the value for the top of the plotted region Any counts above this value will be plotted at this value Enter the Maximum Value for the Vertical Axis Fig 116 Vertical Range Options Dialog 147 MAESTRO 32 V6 A65 B32 7 1 3 Command Line Interface Th
227. uclide from the master library to the working library 1 Goto the master library list and click once on the nuclide of interest This will activate the gray Insert Copy button at the bottom of the Editing dialog s nuclide list and change its label to Insert plus the name of the nuclide 2 Now in the Editing dialog locate the nuclide immediately below the desired insertion position click on 1t once then click on Insert nuclide name This will insert the nuclide and display its peak list on the right 3 Double clicking on a nuclide in the master library will add it to the working library inserting 1t immediately above the currently highlighted nuclide in the list 7 2 2 Creating a New Library Manually Open the control menu and click on New This will clear the Editing dialog so nuclides can be entered manually Click on the Insert button to open the Insert Library Nuclide dialog shown in Fig 120 Enter the Nuclide Name and Half Life and click on OK 150 Now at the bottom of the right hand peak list click on Insert to open the Edit Library Peak dialog Fig 124 Enter the energy of the gamma ray and the branching ratio of the peak 7 2 3 Editing Library List Nuclides To edit the information about a nuclide in the working library l Click on the nuclide to highlight it The Edit button in the upper right of Fig 117 will change to Edit plus the name of the nuclide as shown in Fig 121 Click on Ed
228. ulse height where Intercept The channel number of the zero height input pulse Gain The relation between pulse height and channel number slope of the curve Changes in either the zero intercept or gain can affect the positions of all the peaks in the spectrum When used with the gain stabilizer both the zero intercept and the gain slope are monitored to keep all the peaks in the spectrum stabilized The zero stabilization and gain stabilization are separate functions in the MCB but both will affect the position of the peaks in the spectrum The stabilization operates by keeping a peak centered in an ROI you have defined The ROI should be set symmetrically about the center of a peak with reasonably good count rate in the lower channels of the spectrum The ROI should be about twice the FWHM of the peak If the region is too large counts not in the peak will have an effect on the stabilization The ROI can be cleared after the PEAK command so that peak count preset can be used on another peak The zero stabilization dialog Initialize button sets the zero offset to its midpoint that is halfway between minimum offset and maximum offset This should be done before selecting the ROI for the peak because the initialization might move the peak in the spectrum and because it ensures that the maximum range is available for the stabilization process The Suggest button is used to set the peak center and peak width of the peak area used by the s
229. vertical scale so that spectrum peaks are smaller Change vertical scale so that spectrum peaks are larger Narrow the horizontal scale Widen the horizontal scale Sets the Expanded Spectrum View to the full spectrum Zoom out Zoom in Center expanded display on cursor Switch to logarithmic vertical scale Switch to auto vertical scale Mark the peak region around the cursor as an ROI Clear the ROL Shift the compare spectrum upwards Shift the compare spectrum downwards Start acquisition in selected Detector Stop acquisition in selected Detector Clear data in selected Detector Copy data in the selected Detector to the buffer Switch between displaying selected Detector and buffer Decrease amplifier fine gain by smallest increment where supported Decrease amplifier fine gain by several increments Increase amplifier fine gain by smallest increment Increase amplifier fine gain by several increments Capture screen to Windows Clipboard 5 KEYBOARD COMMANDS DP ye d Aseiqi 19YBIU yxaN gt yead Aeq J9MO X3N 2 sdays Auew ure6 auy aseasou 10Y 19UBIY x N E IO 19M0 3X3N S d s ue6 uy aseasoul 2 ye d 19yBly x N 2 yeed Jamo JX9N Q J9PIM 2uueyo 13yBly x N e a jeuueYd 19MO X N gt umop wn193ds FYYdNO9 F E 1911048 4 sdajs Auew ules aul asea99q S 108 HIEIN SUI dn wnnoads 3YYdNOI S days ure6 auy se 1 q low 18219 120 sane1y J9MOLIEN 493U399 G sm 7 feeb
230. which is proportional to the particle or photon energy An analog to digital converter ADC is used to convert each pulse into a channel number so that each channel corresponds to a narrow range of pulse heights or voltages As pulses arrive over time the MCA collects in memory a distribution of the number of pulses with respect to pulse height a series of memory locations corresponding to ADC channels will contain the number of pulses of similar although not necessarily identical height This distribution arranged in order of ascending energies is commonly referred to as a spectrum To be useful the acquired spectrum must be available for storage and or analysis and is displayed on a graph whose horizontal axis represents the height of the pulse and whose vertical axis represents the number of pulses at that height also referred to as a histogram MAESTRO 32 combined with multichannel buffer MCB hardware and a personal computer emulates an MCA with remarkable power and flexibility The MCB performs the actual pulse height analysis while the computer and operating system make available the display facility and data archiving hardware and drivers The MAESTRO software is the vital link that marries these components to provide meaningful access to the MCB via the user interface provided by the computer hardware The MAESTRO 32 MCA emulation continuously shows the spectrum being acquired the current operating conditions and the availab
231. y are displayed on the Marker Information Line These functions are duplicated by the Library indexing buttons on the Status Sidebar 5 2 5 First Last Channel lt Home gt lt End gt These keys move the marker to the first or last channel of the spectrum 112 5 KEYBOARD COMMANDS 5 2 6 Jump Sixteenth Screen Width lt PageDown gt lt PageUp gt lt PageDown gt and lt PageUp gt jump the marker position to the left to lower channel numbers or right to higher channel numbers respectively 1 16 of the window width regardless of the horizontal scale The status of the ROI bit is not altered when the marker is moved with these keys that is the Mark UnMark Off state is ignored The marker channel contents and Marker Information Line are continuously updated as the marker jumps so when the jump is complete the marker information is up to date for the current channel 5 2 7 Insert ROI lt Insert gt or Keypad lt Ins gt These keys mark an ROI in the spectrum at the marker position in one of two ways 1 Ifthe spectrum is calibrated the region is centered on the marker with a width of three times the calibrated FWHM There does not need to be a peak at the marker position 2 Ifthe spectrum is not calibrated the region is centered on the peak if any located within two channels of the marker and is as wide as the peak If the peak search fails or if the peak is not well formed no ROI is marked There is no limit on the si
232. y channel exceeds 2 1 over 2x 10 counts MDA Preset The MDA preset Fig 55 can monitor up to 20 nuclides at one time and stops data collection when the values of the minimum detectable activity MDA for all of the user specified MDA nuclides reach the needed value The MDA preset is implemented in the hardware The formula for calculating the MDA can be generally represented as follows 58 3 MENU COMMANDS MDA at b c Counts Live time Eff Yield The coefficients a b and c are Fa determined by the MDA formula to be Amplifier Amplifier2 AmplifierPRO ADC Stabilizer used The Eff detector efficiency is High Voltage About Status Presets MDA Preset determined from external programs The Yield branching ratio is read from the working library using the nuclide and energy specified The Add New MDA Preset Update MDA Preset Coefficients MDA value is the one you have y Correction ch A 0 000000 entered in the dialog Counts is the aa gross counts in the specified region and Live time is the live time The Energ gia c 0 000000 MDA value is calculated in the MCB given the values a b c Live time and Yield The calculated value is Fig 55 DSPEC Pro MDA Preset Tab compared with the MDA value on the dialog and when it is lower acquisition is stopped Suggest Coefficients A B and C can be entered as numbers for the MDA calculation desi
233. ze of a peak or ROI therefore in some uncalibrated spectra large ROIs could be marked These accelerators duplicate the function of the Mark ROI Toolbar button and the ROI Mark Peak menu selection see Section 4 5 NOTE lt Insert gt and Keypad lt Ins gt work conveniently in combination with lt Ctrl gt and lt Ctrl gt to rapidly set peak ROIs 5 2 8 Clear ROI lt Delete gt or Keypad lt Del gt lt Delete gt and Keypad lt Del gt clear the ROI bits of all ROI channels contiguous to the channel containing the marker These accelerators duplicate the function of the Clear ROI button on the Toolbar and the ROI Clear menu selection see Section 4 5 5 2 9 Taller Shorter lt 1 gt lt gt The lt 1 gt and lt gt keys decrease or increase the vertical full scale of the displayed spectrum so the peaks appear taller or shorter respectively The minimum is 16 counts full scale the maximum is 1024 million counts Each successive key press doubles or halves the full scale until the maximum or minimum is reached Whenever the maximum full scale value is reached the next lt gt key press switches to logarithmic scale If the display is already in logarithmic scale the display switches to linear scale In either case the vertical full scale value is always shown on the Toolbar 113 MAESTRO 32 V6 A65 B32 Note that if the number of counts exceeds the full scale value the data points will be displayed at the full sc

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