SR9910-V7 Handbook
Contents
1. OTT have positioned on the first wavelength of the File Tine t DEMONTE L 14 55 80 Rhy 771994 Rize 76050 botes range you want to zoom in on Move the cursor to the other end of the range and press RETURN again The graph will now be redrawn to include only the wavelength range you have chosen The zoom function can be carried out indefinitely until the graph is reduced to one point The integrals are recalculated and displayed for the zoomed wavelength range Pressing the B key will take you back to the original graph Single graph only 2 2096 0 1 Hen amp 1959 02 1 52100 mnala wwe a ME PME E 7 4 4 SAVE ZOOM 5 00 1079 m You can save the zoomed spectrum as a separate data file by pressing S Enter a file 2 20074 name and the zoomed part of the spectrum 2 0008 will be stored in this data file 2 501079 ETT ie 1 501073 1 001079 Lu 5 0 00 i i i 3 i Have length Full C SSR DEROSTL LARP DTI File Tine at 44 55 80 ah 7 1994 Rize 76050 tea 25 7 4 5 CONVERTING GRAPHS TO OPTIONAL UNITS Graphs are normally plotted with the radio 2 0886 00 7 2996 02 Lam 9 24668 00 Malam metric unit for example with irradiance meas 22 Bet tow 1073 06 went urements the Y axis is scaled in W m Alterna 6 0010792. EdnuEHS m e Ue 100 m i m 7 nm ERIRRAERIERRERAER ESSESSERSSERSEZS 7 1 15 RETURN TO MAIN MENU Press ESC while viewing the file list to return to the main menu You should familiarise yourself with the operation of this system as it is used to choose files for most operations 7 1 16 CAL FILES If you choose CAL FILES at the files menu you can view the calibration files supplied with SPECTRO by choosing READ FILE If you choose CREATE FILE by accident return to the main menu by pressing ESC Each light input accessory will have its own calibration file These files hold information such as the start up optocoupler wavelength and absolute calibration gain factors and the name of the spectral calibration file 7 2 SCAN 7 2 1 POSITIONING THE LIGHT GUIDE AND INPUT ACCESSORY When using the sideview cosine light guide accessory mount it pointing towards the source to be measured When using the telescope mount it on a tripod and point it at the surface to be measured Look through the eyepiece and adjust the eyepiece focus until the black spot in the centre of the image is in focus Use the front lens focus adjustment to bring the image of the surface into focus 7 2 2 SCANNING This is the main functional part of the spectroradiometer It allows you to scan the wavelength range of your choice and record the spectrum in a file You will be asked for Start and Finish Wavelengths from
3. mue Blootup qraph it a e and graph it asing the above parameters The graph options are 1 SINGLE or MULTIPLE graph Allows you to plot one file with integrals section 7 4 1 or plot up to five files on the same axis 2 GRAPH BOX NO GRAPH BOX The graph box provides a frame for the graph amp integrals 3 FILE INFO NO FILE INFO Additional file information can be displayed at the bottom of the graph screen this includes file name file size and date amp time of scan 4 LINEAR LOG Graphs can be plotted with either linear or logarithmic scaling on the Y axis For logarithmic graphing the number of decades can be set using the options menu section 7 7 G RAPH Continues to the file selection screen This is functionally the same as the file handling screen described in section 8 1 above Select the file you wish to plot and press RETURN If you are plotting multiple graphs you will see the File Selected list containing the files you choose Keep choosing files until you have picked five or press TAB to finish the selection Pressing the DEL key will remove the last file from the selected list The file s you have selected will now be plotted The title placed at the top of the graph screen will be the data file name or the optional text title see Edit File Title in section 7 1 9 or ADD TITLE in the scanning menu section 7 2 2 HELP Press Fl for a help menu of the key functions on the graphing screen Pre
4. tive Y axis scalings are available from the CON i VERSION table key press C on graph display El Exige eee Choose from up to five options listed on the d EIU menu by pressing the numbered key Press ESC to return to radiometric graphing Conversion 1 is also available within a zoomed graph screen 4 It is possible to overlay the converted graphs MON on the radiometric graph using the SHIFT j 2 S with the appropriate number 1 to 5 OP PaR EE ET EE ERT EPERE Have length Gm Full C s3R DEMOSTL LARP OTE nti t 14 55 40 hs 7 1994 Rize 75050 bytea 7 4 6 SAVING A CONVERTED DATA FILE IN CSV FORMAT By pressing the S key when displaying a converted data graph a file can be saved in CSV format listing the wavelength and converted data This file can then be imported to a spreadsheat programme for further analysis 7 4 7 MONOCHROME MONITORS AND MULTIPLE GRAPHS The multiple graphs are plotted in different colours and their file names keyed in that colour If SPECTRO is run in monochrome mode each plot can be highlighted in turn by pressing SPACE The highlighted plot and file name will flicker to aid identification 7 4 8 PRINTING GRAPHS Graphs can be printed directly to a laser printer by pressing the P key when displaying a graph on the screen A menu box appears with printer options including orientation landscape
5. RETURN or alternatively type SPECTRO M 3 lt RETURN gt 6 4 ON OR OFF SPECTRO will run whether the spectroradiometer is on or off If the spectroradiometer is off you will be warned about this If you continue SPECTRO will allow you to use its graphing and file handling options but you will not be able to control the spectroradiometer To do this the spectroradiometer must be switched on and connected when SPECTRO is first run 6 5 UP AND RUNNING If this is the first time that SPECTRO is run the program will check which drives are available on your PC It will detect drives from A to Z If you only have one floppy drive you may see the message Insert Disk For Drive appear If this happens press key This procedure is only carried out once You should havea title screen displayed by now Press a key to move on If the spectroradiometer is on you will be presented with a choice list of all the light input devices available Choose the option you wish to use Remember to choose the option which matches the light guide you are using or else the calibration data will be invalid Now wait until the calibration data is loaded 6 6 MOVING AROUND IN SPECTRO You will now see the spectroradiometer main menu presented on your screen see below There are two ways to choose options in SPECTRO The first method is to press the key highlighted by square brackets for each choice For example to choose S CAN press the S key and thi
6. length by these numbers If it is told one of them is zero the program will crash Try rebooting to load the file in again Next run EDITFILE and choose R EF files and load the relevant file Scan the cursor slowly across the graph keeping your eye on the value displayed at the top left of the screen If this ever shows zero between 240 and 800 nm then the program will crash at that wavelength If it is just one place use EDITFILE to fix the point setting the value to between its neighbouring points If the whole file looks damaged copy the reference file from the original disk Stack overflow error SPECTRO is trying to do too many things at once and has run out of space This may happen if you have many graphs zoomed Also check that you have not used the DOS shell command in the FILE menu and then rerun SPECTRO using SPECTRO instead of EXIT this will load two or more programs of SPECTRO into memory using up the space SPECTRO needs for its variables Heap overflow error Similar to 202 Floating point overflow SPECTRO is calculating numbers which are too large for it too understand Check the data files you are manipulating are valid Overlay file read The file SPECTRO OVR is corrupt Copy the file from your original disk 38 APPENDIX A continued SPECTRORADIOMETER ERROR CODES Other Errors BGI Error Graphics not Initialised The file EGAVGA BGI is missing Copy it from your original disk Or you may b
7. 240 to 800nm Step Size any size from 0 25nm to 00nm Entering a zero step size will initiate the programmable wavelength option ref section 7 2 3 Integration Time per reading Typically you may choose 100 ms integration time per reading for a high intensity signal and 500 ms for a low intensity noisy source The default settings are used if you press RETURN for each option See section 7 7 You will then be asked how many scans you wish to take If you choose more than scan you can enter the interval in minutes between scans This allows you to use the spectroradiometer as a simple spectral data logger If you enter the interval as 0 then the programmable multiple scan option is initiated ref section 7 2 4 The usual default number is one ref section 7 7 Before the scan starts a data file will be opened to store the spectrum in This is automatically named using the time of scan For example a scan taken at 4 05pm will be named as 1605 DTA The last two digits are seconds This ensures that the chance of two files being named identically is very small Use ESC key to halt during a scan Data is collected and stored in the file at each wavelength while the spectroradiometer steps through the wavelength range This data is scrolled up the right side of the screen ATS I 408 uL 3E 83 Un n 3E 83 Wn snm 4E 83 Wn n Max range 248 009 CINSE BEMINTL LAMP DTI d ya For spectral irradiance scans with a
8. Main Menu Also shown is the Gain setting that the spectroradiometer is currently set at Gain 6 is the most sensitive Gain 0 is the least sensitive The current setting of the sensitivity switch is also shown In addition to the display of wavelength number of bits gain and sensitivity you can choose the following operations Initialisation Calibration and Signal Zero 7 6 1 INITIALISATION This option re initialises the wavelength counter inside the spectroradiometer 7 6 2 SIGNAL ZERO This option runs a separate program called grana AUTOZERO EXE This program blocks the entrance port to the monochromator and then goes through the gain ranges on all PMT voltages The dark current reading is meas ured on all these ranges This figure is always subtracted from the readings when the spectroradiometer is scanning I lptions Hlootup Te ee This operation should be carried out periodically If spectroradiometer is being used at different temperature ranges this program should be run more frequently to take account of the changes in dark current AUTOZERO can also be run from the DOS prompt by type AUTOZERO lt RETURN gt 7 6 3 CALIBRATION This option is dealt with in a separate manual and is used to commence the automatic calibration of the spectroradiometer 29 7 7 OPTIONS AND DEFAULTS Selecting O PTIONS from the main menu displays the option and default table Defaults are used when the return
9. changed when the new file is loaded into the spreadsheet Converted files have the extension CSV and can be imported to many PC and MaclIntosh spreadsheet software packages 34 FUNCTION To run type FUNCTION RETURN at the DOS prompt As you have read SPECTRO calculates and displays 3 spectral integrals on a graph W m Lux and umol m s You can also add upto six user defined integrals to the graph using this program The functions files are tables of spectral weighting factors defining a specific response eg the Lux integral uses a table of the CIE photopic response the W m integral uses a weighting factor of over the entire spectrum Function will ask you which integral you wish to create number 1 2 or 3 These correspond to the files USER I FNC USER2 FNC and USER3 FNC These files are used to hold the weighting factor information If you wish to remove an integral simply delete the file which contains it There are some pre defined integrals supplied on the disk with the extension FNC To use these simply copy the desired file into any one of the USER FNC files using the DOS COPY command For example COPY SETLOW FNC USER5 FNC You can give the integral both a title and units which are displayed on the graph screen You will be asked for the wavelength range and wavelength step interval between the values of the data you will be entering You should have the values you wish to use in a tabulated form beforehand to
10. cleaned with a soft cloth and some mild detergent and water The SR904 reflex viewing telescope is focused on a point on an illuminated surface and is used to measure spectral radiance and luminance from that surface When used with a reference standard the telescope can be used to measure the reflectance and colour of a surface 2 2 LIGHT GUIDES The light guides are constructed from high quality quartz optical fibres Please take care with these as it is possible to damage them Never bend them sharply or subject them to shocks Carefully draw the guide from the spectroradiometer while holding the metal parts Do not pull the flexible part of the guide Try to avoid leaving the guides hanging loose under their weight Always try and support the guides as far as possible Most decreases in sensitivity can be attributed to fibres being broken 2 3 SPECTRORADIOMETER The Irradian spectroradiometer comprises of a double monochromator with internal filter wheel and stepper motor drive cooled photomultiplier detector with amplifier and an electronic control unit Light incident on the cosine diffuser is transmitted via a flexible light guide to the entrance slit of the double monochromator The entrance and exit slit widths of 0 5mm together with the dispersion of the monochromator gratings give a FWHM bandwidth of 2nm Wavelength control of the monochromator is via a stepper motor coupled to the sine bar movement of the gratings At the intermedi
11. for selection Choose the appropriate file and press return The program displays an estimated colour temperatue accurate to 50 and the colour coordinates x y z and u v for more accurate determination The user is presented with an option to print the results to an appropriate LPT port before returning to the main menu Data File C PROJECTS SPECTR I V7_06 DOS POLARON DT Correlated Colour Temperature 2858 K WARNING This value is an estimated value If you require accuracy of better then 50K use the X and Y coordinates below and look up the colour temperature on a x y chart Colour Coordinates x 0 4479 y 0 4086 z 0 1435 u 0 2557 0 3499 Print Results Y N Choose LPT I LPT 2 LPT 3 LPT 4 20 7 3 REAL This option allows you to set the spectroradiometer at a single wavelength and either monitor the signal manually with control over the wavelength or store the signal versus time in a data file When you choose this option you will be asked to enter the wavelength you wish to monitor You will then be presented with the choice of Manual control or Log to File 7 3 1 MANUAL In this mode you will be shown a real time display of irradiance or radiance at the chosen wavelength You change the wavelength by pressing the cursor keys sien Real Tine t wove 1Bnn t d to move slum ESC to quit of data IB1iagnostics ms co ne FicHelp DFF 7 3
12. guides gives each spectroradiometer an unique spectral response The spectro program automatically corrects the signal amplitude for each wavelength The calibration files are unique to each spectroradiometer and are generated when the instrument is calibrated in the factory or with the SR903 calibration source and software The usual name for a calibration file is STAND REF 3 SETTING UP 3 1 Equipment Checklist Your spectroradiometer should come with the following parts Spectroradiometer model SR9910 Version 7 Light guide s and input optic accessories in case RS232 computer interface cable 25 way to 9 way serial port connector adaptor Monochromator input port plug I2v Switch mode power supply Mains Lead Software disk s Handbook 3 2 Connecting to the PC After unpacking the spectroradiometer place it on a flat stable surface near to the host PC Connect the external 12 volt pwer supply to the 12 input socket on the rear panel of the spectroradiomter Plug the power supply into the mains With both the spectroradiometer and the PC turned OFF plug the RS232 interface cable into the rear panel connector of the spectroradiometer and either COMI or COM2 connectors of your computer The spectroradiometer control software will support serial connections up to COMA If in doubt consult your PC s manual Leave the light guides in their boxes for the moment and turn on the PC and s
13. key is pressed in reply to an input This saves time when repetitive inputs are required Defaults A through to L refer to the spectral scanning options Defaults M through to X refer to graphing options Default Y is the directory that data files will be stored in after scanning Default Z is used to compensate for the various computer speeds select the option you wish to change by pressing the key highlighted 1 The available settings will cycle or you will be prompted to type in the option Modified settings will be used during this session Start Wavelength Number Of Scans End Wavelength Scan Interval mins Step Size BOB Ext Sync Of Scans Integration Time Ext Sync Of Readings External Monitor zero before Scan Flip Mirror Scan status messages Multiple Graphs Graph Title Filename only Graph Shading i Shnu Parameters Integrals Graph Lines File Information NO Graph Smoothing Graph Box NO Iterations Graph Type Linear Shade Colour Light gray Log Decades Wo Working Directory C PROJECTS SPECTR 14 7 085205 Speed Setting 3 ESC Quit 1 Load 2 Save 7 7 1 CHANGING DEFAULTS When the options screen is displayed simply press the bracketed key for the default you wish to change This will either cycle through the available settings or allow you to type in a number or name Press RETURN to select The computer will not accept a value that is out of range The
14. make this process easier Note For absolute integral values the spectral weighting values must be relative to W m nm EXAMPLE OF USE To create a simple bell shaped function from 300 to 400nm and peaking at 350nm called MY UVA with units of UV UNITS Run FUNCTION and select function Enter the wavelength range 300 400 Enter the Step Size 10 Enter the title MY UVA Enter the units UV UNITS Now assuming we have our function tabulated as follows we just enter the data as prompted 35 Wavelength 300 310 320 330 340 350 360 370 380 390 400 Weighting Value 2 4 42 5 5 5 5 42 4 2 If you make a mistake press ESC to go back to the last number Now run SPECTRO and plot a graph You will see the new integral calculated and displayed along with the three usual ones Currently supplied on the disk are CALDWELL FNC SETLOW FNC EPLANT28 FNC EPLANT30 FNC UVEFF FNC UVERY FNC EDNA FNC IRPA FNC ACGIH FNC Function of the Caldwell generalised UVB plant action spectra Function of the Setlow UVB DNA damage action spectra Function of the plant UV action spectra normalised at 280nm Function of the plant UV action spectra normalised at 300nm Function of the UV effective hazard action spectra Function of the UV erythemal action spectra Function of the UV DNA damage action spectra Function of the UV damage action spectra Function of the UV damage action spectra 36 APPEN
15. option menu can be saved by pressing 2 and it will always be loaded with the main program LOAD will replace any customised defaults with the saved defaults 30 7 7 2 GRAPH SMOOTHING P amp Q When the light intensity falls or if the source is unstable the spectral graphs can look quite noisy Using the technique of three point averaging the noise on the graph can be reduced without generally affecting the integrated values The process of three point averaging can be repeated on the data Iterations Q to successively smooth the graph Note that the stored data remains unchanged by this process 7 7 3 WORKING DIRECTORY This directory where data files will be stored after scanning In the Graphing or File screens the Working Directory data files are first displayed on the screen Setting the Working Directory to Current will add new data files to the program directory If SPECTRO is unable to find the named Working Directory it will create a new directory 7 7 4 DEFAULT Z SPEED SETTING SPECTRO includes a variable delay Z in the options menu to adjust the program delays to suit the speed of the computer in use A value of 10 miniumum value allowed has been tested successfully on an 1 8GHz laptop and a 2 8GHz PC It should only become necessary to change this number to a higher value if PC speeds become extremely high in the future If you experience TIMEOUT problems ona very fast PC try increasing this number to so
16. options to perform the required DIVIDE and MULTIPLY calculations The mirror can be manually selected in the DIAGNOSTIC menu by keying U for upwelling and D for downwelling Note that if an external monitor is fitted to the spectroradiometer this can be enabled during all scans ref appendix D 2 Contact Irradian s engineers about tailoring the software to your specific requirements 42 APPENDIX D continued SPECTRORADIOMETER ACCESSORIES D 2 EXTERNAL MONITOR S During a spectral scan the light levels may change when for example a cloud passes in front of the sun In practice this would require the scan to be retaken under more stable lighting conditions With the use of an external monitor ambient light levels can be recorded in parallel with the spectral scan The spectrum can then be adjusted to follow these light level variances The Irradian spectroradiometer can be equipped with several broad band detectors and a signal multiplexor module to provide spectral and external monitoring An AUXILIARY channel may also beinstalled for further external sensors When the spectroradiometer has a PAR PD204Q Cos and a UV PD204A Cos detector the monitor signal can be recorded from either the UV and or the PAR sensor The external monitors fitted to the spectroradiometer are selected in the Options menu by cycling the E key The order of appearance of the detectors following the option OFF specifies a value of n which starting at a
17. or portrait and the printer port LPTI LPT2 or LPT3 POLARON DTR 01 Wem 03 Lux 6 535E 01 1 1 10x10 1 D xin 1 Printer HELP Choose laser printer options D xin0 8j LPT1 Default LPT2 00 1072 LPT3 Portrait xi Landscape Default 00xin Zj To print to laser Esc To cancel print a Port LPT1 Orientation Landscape 00 10724 00 1072 00 10724 00 10 724 00 10724 00 c mn 50 5 300 985 8 8 8 8B Se GO D 4 OD n 4 m m m wv wv wv aun D m ob D D D m Havelength nnm 26 7 4 8 PRINTING GRAPHS with PIZAZZ PLUS The DOS command GRAPHICS and the Print Screen key can be used to print the graphics screen but does not give very good results See your DOS manual about GRAPHICS You may have purchased the Pizzaz Plus printing utility with your spectroradiometer If Pizzaz Plus has been activated then use SHIFT PrintScreen to run Pizzaz Plus You should read the manual for extra information but the basic steps for printing are shown here When the graphsare displayed press SHIFT PrintScreen to run Pizzaz Plus If nothing happens you will have to activate Pizzaz Plus by returning to the DOS promptand running it by typing PZPXRETURN and then re run SPECTRO When yo
18. 11 44 08 19 5 1994 Size 83711 bytes Horizontal graph lines Logarithmic Y axis scaling Vertical graph lines To reproduce above graph change to the following in the OPTIONS menu ref 7 7 Graph type Log Log Decades 5 Graph lines Both 24 7 4 1 INTEGRALS SPECTRO calculates 3 standard integrals and displays them close to the top of the graph single graph only These integrals total irradiance or radiance W m or W m st total illumi nance or luminance Lux or Cd m and total quantametric flux umol m s from 400 to 700nm SPECTRO can also calculate up to six user define integration functions Details on how to do this are given in section 11 7 4 2 VIEW DATA The data being plotted can be viewed in a tabulated form by pressing D when viewing 2 0286 00 4 4176 08 Mnt nm 7 2996 Lux 9 3466 00 Maalan Set low 1 073 06 Ment 6 001077 the graph single graph only sac 5 00107 non to 580 7 4 3 ZOOM 401972 a 00 10 77 2 501079 By pressing the Z key you can zoom in se smaller part of the spectrum 2 0073 2 00x107 1 501075 Move the line cursor along the wavelength 4 V X axis using the left and right cursor keys for fine svo NE 4 X movement and the and down cursors EEEE EEEIEE Di kA n e Ld gt larger movement Press RETURN when you em Full CMER
19. 2 Changing the Time Mask 7 1 3 Changing Drive 7 1 4 Directories 7 1 5 Renaming a File 7 1 6 Copying a File 7 1 7 Delete a File 7 1 8 Move a File 7 1 9 Edit or Add a File Title 7 1 10 Selecting a Block of Files 7 1 11 Create New Directory 7 1 12 Remove Directory 7 1 13 Printing a File 7 1 14 Viewing a File 7 1 15 Return to Main menu 7 1 16 CAL Files Page NN DOO 11 II 11 12 13 13 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 CONTENTS SECTION 7 PROGRAM OPTIONS CONT 7 2 7 2 1 7 2 2 7 2 3 7 2 4 7 2 5 7 2 6 7 2 7 7 3 7 3 1 7 3 2 7 4 7 4 1 7 4 2 7 4 3 7 4 4 7 4 5 7 4 6 7 4 7 7 4 8 7 4 9 7 5 75 1 7 5 2 7 5 3 7 5 4 7 5 5 7 5 6 7 6 7 6 1 7 6 2 7 6 3 7 7 7 7 1 7 7 2 7 7 3 7 7 4 SCAN Positioning the Light Guide and Input Accessory Scanning Programmable Wavelength Interval Programmable Multiple Scans Reflectance Transmittance Fast Scanning Colour Measurement REAL Manual Log to File GRAPHS Integrals View Data Zoom Save Zoom Converting Graphs to Optional Units Saving Conerted Data in CSV Format Page l6 l6 l6 18 18 19 19 20 21 21 21 22 25 25 25 25 26 26 Monochrome Monitors and Multiple Graphs 26 Printing Graphs Printing Graphs with Pizazz Plus ANALYSIS Average Files Subtract Files Normalise Files Colour Values Div Files Multiply Files DIAGNOSTICS Initialisation Signal Ze
20. 2 LOG TO FILE This mode will monitor the signal level at the chosen wavelength and store the readings in a data file versus time You will be asked to enter the interval between readings in seconds minimum interval 5 seconds and then the number of readings maximum 1000 readings While the data is being collected you will see a time counter and the filename displayed beside the reading Note the filename for graphing latter Use the ESC key to halt recordings Entering a 0 time interval will initiate the spectroradiometer to record continuously at a fixed gain with the delay set by the integration time Use the ESC key to terminate recording At the end of the logged time period the screen changes to the main menu To view the real time logged data select Graph menu and Login graph the stored file section 7 4 Tine Interval 2 5 Readings max 1808 7 16 ESC to abort IA1naluysis of data IBliagnostics The data file can be viewed after graphing section 7 4 2 or in the File menu section 8 1 13 Options Mlootup FisHelp OFF 21 7 4 GRAPHS The GRAPHS menu contains some options which you can change by selecting them ei ther by pressing the key indicated or by using EA ED the cursor keys to move the bar There are 143 angle L default settings for all the options in GRAPH so that you can select GRAPH quickly see also section 7 7 IA1nalysis of data
21. 75w 1 66E 82 Mw Sw 12771 62 Wn nn 1 Graph Data Firat Wavelength 380 08 1 526 02 meten 1 Last Uavelength 556 09 598 1 46E 82 Vn rn 2 Print Data Step length 1 08 pow 1 37 0 82 Wn n 1 27E 82 Wn nn 3 Repeat Scan AM Samples per reading 208 Giwa 11 18 02 Wat nn 4 R Fil 1 87E 82 Wn nn ename File 59 56 03 Wat an 0101 Graph date 8 376 03 5 Add Title 21 Print data Gs 7 33 03 Wat im 2 Repeat scan 6 24E 03 Wn hn ESC Quit 141 ile 52171 83 Wn cnn 48 151 MM Title 4 40E 03 nn Quit Stop Scam YAT FisHelp OFF Plot the new scaw on the screen 1 GRAPH DATA draws a graph of your new spectra using Spectros graphing capabilities More detailed information about the graphing options is given in the graphing section 7 4 2 PRINT DATA prints out the scan in tabulated form as described above in section 7 1 12 3 REPEAT SCAN simply repeats the same scan and returns to these five options A new data file is created with the current time as its file name 4 RENAME allows you to choose a different name for your file SPECTRO s feature of automatic naming is good at ensuring that a file doesn t overwrite another and may save you having to think of a name for every scan but is not very helpful when you have a large list of files and start to loose track of which is which This opti
22. DIX A SPECTRORADIOMETER ERROR CODES We have tried to make SPECTRO as easy to use as possible and have trapped many of the possible program errors In any program of this size and complexity it is impossible to completely debug a program successfully The list that follows shows the RUN TIME errors that may be reported if the program crashes and possible causes for them This may help you solve the problem quickly and with minimum fuss Run time errors are reported as Run time error NNN at The code NNN is the error code xxxx yyyy is the position the program s code that the error occurred at Error Code Possible Causes and Remedies 002 File not found SPECTRO has tried to open a file on your disk which doesn t exist Make sure thatall the files on your original diskette are on the hard drive 003 Path not found SPECTRO has tried to locate a file in a directory which doesn t exist 004 Too many open files Make sure you have a line like FILES xx in your CONFIG SYS file Make sure xx is at a suitable number 20 is a good start 005 File access denied Either the disk is full or the file SPECTRO is trying to write to is a read only file 017 Cannot rename across drives SPECTRO is trying to rename a file on one drive with a name that says it is on another for example trying to rename A TEST DTA to C TEST DTA 100 Disk read error SPECTRO has attempted to read past the end of a file Check that t
23. F FILES To selecta file move the cursor over the file and press the space bar The file is now highlighted Select other files as necessary and then the file operation eg ALT D to delete files All files in the directory can be selected tagged using CRL T or all files de selected untagged using CTL U When deleting a block of files a choice is given whether or not to confirm each file deletion 7 1 11 CREATE NEW DIRECTORY Choose ALT N to create a New DOS directory Enter full path for a sub directory 7 1 12 REMOVE DIRECTORY The command ALT K not listed will remove Kill an empty DOS directory 7 1 13 PRINTING A FILE Choosing ALT P will print the data file to your printer The printing procedure uses no control codes apart from Form Feed Line Feed etc so it should work quite happily with most types of printer on standard operation The file is printed in a tabulated format with headings page numbers and so on 7 1 14 VIEWING A FILE Film L SE ELTRETL LeTY ETI Halangi Beef ene Hee eee daegik Leet eee ALT V will print the file out on your screen ina tabulated form Use the PgUp and PgDn keys to move the view back and forth through the pages Press ESC to return to the file list This option can be used to find peaks or particular power levels in a file m BH NH IMB rm Be MUR rm 15 i 25 D Ei SEF ht him EE 4 EGSESSESSES i
24. F ILES from the main menu This option is used to manipulate all your data files in a general way You will be presented with a secondary menu as shown below By choosing DATA FILES SPECTRO will show a list of all the files in the current directory mires This option can be used to Rename Delete ien Copy Move Print and View data files in any directory and on any drive available of data Clal Files File Slpreadsheet 01015 SPECTRO stores scan data in files on the hard DNI disk These are usually named after the time of the scan and have an extension to indicate the type of scan taken For example a scan taken at 3 00PM would be called 150000 DTA Other extensions DTI DTR used to differentiate irradiance and radiance files and DT I lptions Blootup Quit FicHelp OFF View Print Copy Delete etc any data file 7 1 1 Changing File Mask You will notice the file mask is set at DT This is used by DOS to select files depending on their name The means any word the means any letter so the mask here is selecting all files which have DT as the first two letters of the extension for example FILEI DTA FILE2 DT and FILE2 DTI would all be suitable file names You can change the mask in two ways If you pressa letter or number key this letter or number will be added to the file cs MELLE mask So if you wish to se
25. IRRADIAN LTD SPECTRORADIOMETER OPERATING GUIDE FOR SOFTWARE VERSION 7 0 Operating instructions for the Irradian spectroradiometer model SR9910 with accessories Handbook Ref No MH 012 Issue Disk Ref SR991 V7 Handbook Update Log Issue Date Software Version and Date Pages changed DCN A 16 11 94 6 0 July 94 New issue B 13 02 95 6 02 Feb 95 Add contents pages and Appendix C 06 02 96 6 17 Feb 96 1 3 4 26 28 29 40 41 DOC 06 D 20 10 98 7 0 Oct 98 1 9 19 45 DOC E 01 04 04 7 09 Apr 04 8 11 DOC F 01 05 04 7 09 May 04 Multiple pages DOC G 01 11 04 7 10 Nov 04 44 DOC H 01 12 04 7 10 Nov 04 5 DOC 30 02 06 7 13 Feb 06 45 removed DOC J 29 11 07 7 13 Feb 06 Appendix E added DOC K 05 03 10 7 13 Feb 07 Company Update IRRADIAN LTD 9 Elphinstone Road Tranent UK Tel 01875 898083 Fax 01875 616528 Web www irradian co uR CONTENTS SECTION SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 SECTION 7 SPECIFICATION DESCRIPTION 2 1 Optical Input Options 2 2 Light Guides 2 3 Spectroradiometer 2 4 Enclosure amp Supply Options 2 5 Spectral Calibration SETTING UP 3 1 Equipment Check List 3 2 Connecting to the PC BLOCK DIAGRAM SOFTWARE INSTALLATION USING THE SOFTWARE 6 1 Running the Program 6 2 COMI 6 3 Monochrome or Colour 6 4 On or OFF 6 5 Up and Running 6 6 Moving around in Spectro PROGRAM OPTIONS 7 File 7 1 1 Changing the File Mask 7 1 2
26. ambient light level fluctuations however accurate compensation is not possible when significant spectral changes occur in the light source D2 4 EXTERNAL MONITOR FILE All Selecting the option FILE All will store measurements from all the external monitors in a manner identical to the option MONITOR FILE sensorname The recorded signals are saved to dtn files as previously described 43 APPENDIX D continued SPECTRORADIOMETER ACCESSORIES D2 5 ZEROING THE EXTERNAL MONITOR BEFORE A SCAN Selecting key K in the Options menu will cycle through the zero before scan options that are available When the external monitor switch E is in one of the active modes File or Mult the options available differ somewhat from those that are available when the external monitors are deselected D2 5 1 NO When this option is selected no zero before scan occurs and zero levels are unchanged from the last zero measurement that was made It is available irrespective of whether the external monitors are active or not D2 5 2 YES This option is only available when the external monitor switch E is off and no monitors have been activated In this case the zero before scan only nulls the background input from the optical accessory being used D2 5 3 YES No Mon When the external monitor switch E has selected an external monitor this option allows a zero before scan for the input optical accessory only In this case the external monitor s
27. ate slit a four position filter wheel under PC control is used to shutter the detector or remove second order diffractions The monochromatic light incident on the second diffraction grating is further purified and directed to the exit slitand onto the side window photomultiplier tube detector To reliably and accurately measure the intensity of light by the PMT the photocathode is cooled The Cockroft Walton high voltage power supply has four programmable voltage levels to provide an extended dynamic range with good linearity The output current from the PMT anode is amplified a four range transimpedance amplifier The signal is measured by an integrating analogue to digital converter with up to 24 bit resolution and transmitted using the micro controller to the PC via an RS232 interface Using the calibration files the data from the spectroradiometer is scaled and corrected within the PC for presentation in radiometric or special function units 2 4 ENCLOSURE amp SUPPLY OPTIONS The SR9910 is available in a laboratory enclosure for indoor use or a robust environmental enclosure for outdoor use In both enclosure options the spectroradiometer is powered from an external 12 volt supply For indoor use a switch mode power unit is supplied For outdoor use the 12 volt supply can be a car or boat battery 2 5 SPECTRAL CALIBRATION The combined spectral response of the photomultiplier tube and the transmission of the monochromator and light
28. being used are not nulled even though data is to be taken This option is useful when it is impractical to fit remove the blanking cap s on the monitor s in use before the scan D2 5 4 YES Sensorname With an external monitor activated this selection provides the user with the option to zero before scan both the input optical accessory and the external monitor that is named in Sensorname The sensor cap must be fitted onto the named external monitor prior to nulling and removed when nulling has finished The program pauses to allow for removal of the sensor cap before continuing with the scan This would be the typical selection when an external monitor is being used to adjust the readings from the input optical accessory D2 5 5 YES All This option allows both the input optical accessory and all external monitors to be nulled prior toascan The sensor caps must be fitted onto all the external monitors prior to nulling and removed when nulling has finished The program pauses to allow for removal of the sensor caps before continuing with the scan This option is typically used when readings are to be taken from all external monitors 44 APPENDIX E ENVIRONMENTAL CARE RECYCLING AND DISPOSAL The purpose of the European Commission WEEE directive Waste Electrical and Electronic Equipment 2002 96 EC is to ensure that electrical and electronic products are recycled using the best treatments recovery and recycling techniques that are currentl
29. cope for Measurement of Radiance Various Diameter Integrating Spheres Customised Assemblies for Specific Applications Side window S20 multi alkali photomultiplier tube Cockcroft Walton power supply with four PC set voltage levels Temperature stabilised to 2 C Four gain range amplifier under PC control Integrating A to D convertor up to 24 bits Programable integration time from 1 to 30s I HMz 8bit with RS232 communication Standard RS232C Serial Interface to COM COM 4 serial port of IBM compatible The software is designed to run on any 10076 IBM compatible personal computer Recommended Hardware GHz or higher processor Colour or monochrome VGA or SVGA graphics 4MB RAM At least free Hard Disk space plus free space for data files Each spectroradiometer and accessories is calibrated with a deuterium and tungsten halogen lamp These lamps are routinely calibrated by the National Physics Laboratory 10 to 40 C 10 to 50 C 2 DESCRIPTION 2 1 OPTICAL INPUT OPTIONS The cosine corrected assembly connected to the end of the light guide is designed so that the intensity of light detected at any angle is proportional to the cosine of the angle The standard cosine corrector is a good approximate cosine head suitable for measuring irradiance and illuminance from point sources or from extended sources such as daylight The cosine correction is 3 up to 70 The white PTFE diffuser may be
30. cosine AE MD edi relie io 409 7 13E 04 Went n corrected light guide the file extension is Sensitivity High 1838 82 Wt 410 1 04E 63 Un DTA spectral radiance scans with a reflex iiS 15 63 Wat um Firat Wavelength 380 08 Ages 1 05E 63 Wn nm Last Wavelength B86 o8 25 2 10E 83 Wn viewing telescope or field of view accessory MC M TNAM 1 1 1 1 435 2 86E 82 Wn n the extension is DTR Other file extensions ie ie 445 2 8 3 are used for normalised relative spectral scans Muster of Scans 1 sw 3650 03 Wat am SC 455w 3 166 03 Un nn and spectral transmission transmittance re 1281 8 Wet am 4 22021 63 Wet von flection amp reflectance fe 3 3 3 1 zl 3 40 03 Vn nn J 3 3 7 2 2 SCANNING continued If the light intensity is too large then the message Anode current exceeds of dynode current will appear This will not corrupt the file however the photomultiplier is not responding linearly to the light intensity Try scanning again with a lower light intensity When the scan is complete the monochromator is driven back to the start wavelength and you will be presented with the following options Max range 248 809 CiNSB BENONTL LAMP DTI fiy step size above 8 25 555w 1 87E 82 Mw nn Programmable ADC Filter bw 1 21E 82 Vn nn 1 35 0 82 Unt vin Sensitivity High S 1 45E 82 Vn nn 5
31. e type MKDIR C SPECTRO lt RETURN gt Copy all the files from the disk by typing the following COPY C SPECTRO lt RETURN gt If you have been supplied with the printing utility program Pizzaz Plus it will have to be installed onto your hard disk The manual provided tells you how to do this Remember Pizzaz Plus has to be run before you start SPECTRO if you wish to make use of the printing utility Remember to store your disks in a safe place It is recommended that you make a backup copy of the original disks and keep this in a safe place also 6 USING THE SPECTRORADIOMETER SOFTWARE 6 1 RUNNING THE PROGRAM To run program SPECTRO log onto the appropriate directory eg type C lt RETURN gt then CD SPECTRO RETURN and enter SPECTRO RETURN 6 2 COMI to COM4 SPECTRO will automatically use the serial port COMI unless you tell it to do otherwise If you wish to use other serial ports COM2 COM4 then you must run SPECTRO by typing for example SPECTRO 2 RETURN for etc Make sure the interface cable is connected to the appropriate port 6 3 MONOCHROME OR COLOUR SPECTRO should be able to detect if you are using a genuine monochrome monitor However some PC s use a colour screen but display colours as shades of gray If you find that the screen is difficult to view you can force SPECTRO to run in black and white mode by typing SPECTRO M lt RETURN gt Note using B amp W and type SPECTRO 3 M
32. e all files starting 050 0 07 RUSO 2UU DTA with A press A The file mask will have SUNLIGHT DTI TL LAMP BTI OTA changed to A DT If you now wish to row the choice further to files starting with AB press B The file mask will have changed to AB DT Pressing Fl will return the file mask to DT Data Files tle to choose 42 to select upto 8 Piles Paths 9R DENO Alt P Print File Alt M Move File FAsFile Mask 4 Alt D Delete File Alt C Copy File v MT Com nds Alt U View File Alt H Rename File AltH Mew Directory Alt E Edit Title Fz Date Haak 4 BUE S 2 If you press first you can now type in any i file mask So if you were looking for files such as TESTI TEST2 etc you could type in the mask TEST Press FIO to reset the file mask to DT 13 7 1 2 CHANGING THE TIME MASK Pressing F2 will cycle the time mask through ALL FILES THIS MONTHS FILES and TODAYS FILES and the choice to enter a specific date This mask is very simple to understand It simply shows only the files that match the selection Press FIO to reset to ALL FILES 7 1 3 CHANGING DRIVE Pressing F3 allows you to change the drive choice Just press F3 and then the letter of the drive you wish to change to The file list will always display the root directory of the new drive 7 1 4 DIRECTORIES Apart from showin
33. e using an incompatible display such as a Hercules or CGA monitor Contact us for drivers for other display types 39 APPENDIX B WANELENGTH ACCURACY CALIBRATION To calibrate the spectroradiometer for wavelength accuracy the mercury emission lines in any fluorescent light may be used These lamps show sharp peaks at the following wavelengths Note some peaks have very low energy 253 7nm This peak will not be seen from a domestic fluorescent lamp 295nm Weak emission 313nm Combination of two lines 334 1 Weak emission 365nm Combination of two lines 404 7nm Visible violet light 435 8nm Strong blue emission 546 nm Strong green emission 577 579 Yellow light doublet of two lines Can be resolved with bandwidth The compact fluorescent lamp type PLC I is a compact source which be used to verify the wavelength accuracy of the spectroradiometer Scan the lamp with the light guide as close as possible from 290 to 600 in 0 25nm steps Use zoom graph to isolate the various emission lines and the data tables to precisely identify the peaks Compare the measure peaks with the mercury emission lines recording the errors Note the wavelength accuracy specification of 0 5 A small general wavelength error across the spectrum can be remove by adjusting the optocoupler reference in the calibration files If the specrtoradiometer is showing a large wavelength error gt nm the spectroradiometer should be
34. from the surface are measured The reflectance is calculated by ratioing the scans and scaling Alternatively the spectroradiometer can be calibrated on site using a calibrated reflectance plaque The Flip Mirror Input Accessory comprises of a quartz of glass fibre light guide of up to ten metres in length coupling the spectroradiometer to a waterproof enclosure which has two input accessories one on the top lid the other on the lower surface A motorised mirror inside the enclosure directs the light from one of the inputs towards the light guide for spectral measurements rotating the mirror selects the other input accessory The input accessories can be either cosine corrected diffusers for visible or ultra violet and visible measurements or narrow field of view probes The accessories can be interchanged provided the system is re calibrated Computer control of the mirror is via a waterproof low voltage cable and connector form the spectroradiometer to the enclosure The scanning options available are selected in the Options menu key F ASK AT SCAN The user is asked at the beginning of the spectral scan for either upwelling or downwelling measurements UPWELLING Only upwelling scans are measured DOWNWELLING Only downwelling scans are measured UP DOWNWELLING During a measurement scan the spectroradiometer will record a full spectral scan on upwelling light then repeat the scan on downwelling light Use the ANALYSIS of data menu
35. g the data files in the directory the list also shows any subdirectories These are indicated by preceding the name If you choose one of these by pressing RETURN the list will now show the files in this subdirectory The first choice in every list is ROOT This will take you to the root directory for that drive From here you can navigate through all other directories on the disk 7 1 5 RENAMING A FILE When a file is highlighted pressing ALT R will allow you to rename the file You will be asked to verify this action and then type in a new name If you wish to have the same extension on the file simply type the new name on its own If you want to change the extension type in the new name including the new extension 7 1 6 COPYING A FILE Choosing ALT C will allow you to copy a file to another directory Again you will be asked to verify the action and then enter a path directory to copy the file to 7 1 7 DELETE A FILE Choosing ALT D will erase that file from the disk You will be asked to verify this action Take care with this option as SPECTRO does not automatically back up files 7 1 8 MOVE A FILE Choosing ALT M allows you to move the highlighted file to another drive or directory This operation is exactly the same as copying the file and then deleting the original 7 1 9 EDIT OR ADD A FILE TITLE Choosing ALT E allows you to edit the title for the file with up to 79 characters of text 7 1 10 SELECTING A BLOCK O
36. he file you last looked at is a valid SPECTRO file 101 Disk write error The disk has become full 106 Invalid numeric format SPECTRO is trying to read numbers from a file that holds text Make sure the file is a valid SPECTRO file 150 Disk is write protected SPECTRO is trying to copy or move a file onto a disk which is write protected Use another disk or remove the write protection 152 Drive not ready The disk is not in the drive correctly or the disk is not IBM formatted 157 Unknown media type Same as 152 37 APPENDIX A continued SPECTRORADIOMETER ERROR CODES Error Code 158 159 160 161 162 200 202 203 205 209 Possible Causes and Remedies Sector not found Same as 152 or your disk is damaged Try DOS commands on the same disk to see if it is okay Printer out of paper Device write fault The device is not responding The only device ofthis sortthat SPECTRO uses is a printer Device read fault Same as 160 Hardware Failure Same as 160 Division by zero SPECTRO has attempted to perform a calculation where it is dividing a number by zero This could happen when you choose N ormalise if the value you enter is zero or at the wavelength you choose or if you choose D ivide files and one ofthe files contains zero values If it occurs during a scan the calibration values held in the REF file have been corrupted SPECTRO divides the signal from the PMT at each wave
37. ile name for the results 7 5 3 NORMALISE FILE This option will take the file you select and normalise it to a chosen value at the peak wavelength or at a chosen wavelength The results will be stored in a file of the same name as the original but with the extension DT 7 5 4 COLOUR VALUES This option will calculate the x y z and u v values for the chosen file It will also attempt to calculate a correlated colour temperature The results will be shown on the screen 7 5 5 DIV Xt FILES This option allows you to present one data file as a percentage of another ie one file is divided by another and multiplied by 100 This can be used to take simple transmittance measurements For example scan a source and then scan the same source with a filter or specimen introduced between the source and the head A measure of the transmittance can be made by dividing the scan file by the original file 7 5 6 MULTIPLY FILES With this option two files can be multiplied together or a single file can be multiplied by a numerical constant 28 7 6 DIAGNOSTICS The diagnostics menu is used mainly to check various functions of the spectroradiometer im It displays the current wavelength and the signal that is being read This signal is dis played in bits This isthe number ofbits of data coming from the ADC inside the Gain T Sess High spectroradiometer Options Inlootup Head 8 Bits Fi Help OFF Return to
38. le it to Single by pressing 1 or moving the cursor over it and pressing RETURN Set the other options in a similar way Select G RAPH and you will see a list of all the files in the directory Use the cursor keys to highlight HPA LAMP and press RETURN to plot the graph Press D to show the data in tabulated form and press ESC to return to the graph Press Z to zoom in on the graph Move the line cursor with the cursor keys until it is around 300nm 32 8 2 GRAPHING TUTORIAL continued Press RETURN and move the line cursor to around 400nm and press RETURN again The graph will be redrawn between 300 and 400nm Press S to save this zoomed part Enter the name ZOOMED lt RETURN gt Press B to go back to the original graph Press ESC to return to the main menu Choose G RAPH again and this time set the options to Multiple Graph You will notice the file ZOOMED is now also in the file list From the file list choose HPA LAMP and TL LAMP and then press TAB to finish the selection Experiment with the zoom feature Remember that you cannot save a zoom of a multiple graph or view data in a multiple graph 33 9 EDITFILE EDITFILE is a handy fix it program for scan data files Select FILES from the main menu then E for EDITFILE Note It may not always be possible to run Editfile within the SPECTRO program due to DOS memory restrictions and the configuration of your PC Quit the SPECTRO program and try running EDITFILE fro
39. lve the problem Save the defaults and rerun spectro 7 8 BOOTUP Dperating Com itions Menu Choosing this option restarts SPECTRO with out the need to wavelength initialise Standard Cos ine The defaults calibration and reference files are all loaded into the PC s memory This option should only be necessary if you wish to change the light guide assembly being used Please uait ap calibration data 3l 8 TUTORIALS AND EXAMPLES This section takes you through most of SPECTRO s functions step by step Use this section while you are familiarising yourself with the program Connect the computer to the spectroradiometer section 3 2 and run the SPECTRO software program section 6 8 1 SCANNING From the main menu select SCAN by choosing it with the cursor or by pressing S Enter the first wavelength as 300 lt gt enter the last wavelength as 800 lt RETURN gt Enter 5 lt RETURN gt for step size and 100 for integration time Press RETURN to choose scan and sit back and watch The actual scan time depends on the PC used but typically the scan from 300 to 800nm in 5 nm steps should take approximately 60 seconds Show the graph of this file by selecting 1 Graph Data Return to the menu by pressing ESC and press again to return to the main menu 8 2 GRAPHING From the main menu choose option G RAPHS Make sure the options are set for a Single Graph If Multiple is shown togg
40. m the program directory EDITFILE allows you to graph your scan and then modify individual points while it is on screen Once your graph is shown you can position a line cursor up and down the wavelength axis by using the cursor keys until it highlights the point you wish to edit Pressing SPACE now highlights the point and the lines joining to it You can move this point up or down using the cursor keys until it fits in with the rest of your graph Pressing SPACE releases the cursor which can now be move elsewhere Pressing ESC leaves the graph and you will be asked if the modified file is to be saved or not pressing ESC again leaves the EDITFILE 10 SPRFILE SPRFILE can be used to convert the SPECTRO data files into EXCEL LOTUSI23 and other spreadsheet compatible files Select FILES from the main menu then S preadsheet for SPRFILE Your entire scan can then be imported into the spreadsheet and manipulated in any number of ways You will be asked if you want to include microEinsteins and Lux in the conversion A normal file will be imported as follows Wavelength data W m nm Wavelength data W m nm etc An extended file will look like Wavelength data W m nm data uyE m s nm data Lux nm Wavelength data W m nm data uyE m s nm data Lux nm etc Note that SPRFILE does not distinguish between an Irradiance file and a Radiance file The integrals and values will be correct but will have the wrong units This can easily be
41. nd incrementing by one identifies the appropriate monitor file extension 02 1 EXTERNAL MONITOR OFF When OFF is selected signals from the external monitors are not measured or recorded D2 2 EXTERNAL MONITOR FILE sensorname Selecting the option FILE sensorname will enable the external monitor specified with a signal recorded at the start of each scan Thereafter at each wavelength step a measurement is taken from the external monitor and is stored in a data file The file takes the scan data file name but with a file extension dtn where n corresponds to the number of the sensor as described above Data obtained from the external monitors can be viewed or graphed in a manner similar to scan dta data files D2 3 EXTERNAL MONITOR MULT sensorname Selecting the MULT sensorname option will record a value from the specified external monitor at the start of the scan From this point on the spectral data at each wavelength will be adjusted to reflect any change in the external monitor signal at that wavelength compared to the initial signal The external monitor data is also stored in a dtn file For example if the monitor signal is constant throughout a scan no adjustment is made If however the monitor signal is half of its original value the spectral irradiance at that point will be doubled to compensate for the reduction in ambient light level since the start of the scan The external monitor is able to compensate for most
42. on allows you to give the file a name which may be more indicative of the files contents If a file with the new name already exists you will be asked to choose another name or overwrite the existing file BE CAREFUL as there is no way of retrieving the overwritten file 5 ADD TITLE This option allows you to add up to add up to 79 characters to the top of graph screen The file name is omitted from the graph but data file retains its name ESC Returns you to the main menu If you press ESC during the scan you will be asked if you want to terminate the scan or not The scan will still be stored in a data file 7 2 3 PROGRAMMABLE WAVELENGTH INTERVAL Sometimes it is convenient to only measure part of the spectrum in detail and the rest in larger steps eg scan 300 to 350 in 0 25nm steps and then 350 to 800 in 2nm steps If you enter 0 when asked for wavelength step the word Variable will appear This also works in the OPTIONS screen After entering the other scan options the program will ask if you wish to load an existing wavelength step file or create a new one When you create a new one data starts at 240nm and you are asked what step size to use from that wavelength You then enter the next wavelength and step and so on until you reach 800nm The reason that the entire 240 800 region is required is so that this new file can be used for other scans You can then save this file if you wish for future use For example the example abo
43. oose SCAN a new sub menu will appear allowing you to choose Normal Scan Reflectance or Transmission measure ments To measure transmission SPECTRO takes a 100 reference file and then a scan of the E Mole sample Transmission is then calculated and stored in a data file These measurements are usually carried outusing an integrating sphere SCAM MENU Real Glraphs Normal The user should ensure that the sphere light nostic source sample etc are all set up correctly for the measurement Measuring reflectance is similar except that lptions Hlootup Iit the program takes a third scan as a zero reference level FicHelp OFF Use the Integrating sphere to measure transmission 7 2 6 FAST SCANNING Typical scan times can take minutes to complete especially when small steps are taken over a wide spectral range An option to scan a user defined within the limits 240nm 800nm spectral range and step size in a fast scan mode is available In this case significantly reduced scanning times are possible but at the expense of sensitivity and increased noise levels Contact Irradian for further information 7 2 COLOUR MEASUEMENT The measurement of correlated colour temperature from previously acquired data is possible using the menu option Analysis of Data and then Colour Values The program displays the files available
44. pectroradiometer IMPORTANT If you have to use the same serial port as your PC s mouse make sure the mouse driver is NOT active when using the spectroradiometer Again check your PC s manual on details The mouse driver when active can send signals via the RS232 which can cause the electronics in spectroradiometer to hang 4 BLOCK DIAGRAMS AlddNS LWA 201 4 7TwN331X3 01 a3indWO2 24 OL 4 A dd S 170 el 32V 4431NI 2et esa MICRO CONTROLER DETECTOR AMPLIFIER JINVSLNI 40 1 INOW A W3SS Vv 3 1502 5 SOFTWARE INSTALLATION Insert the floppy disk provided into your floppy drive probably drive A If your drive is drive B then simply read drive A as drive B below Where you see lt gt press the carriage return key There are two ways to install the software Log onto drive A by typing A lt RETURN gt and run the INSTALL program by typing INSTALL lt RETURN2 gt The program will ask you which hard drive to install to Simply press the appropriate letter The program will then ask you to enter a directory for the programs Note the default directory is SPECTRO If you wish the programs to be installed on hard drive C under directory SR99I simply enter the hard disk letter C and enter the path SPECTRO lt RETURN gt The installation program will copy all the files from the disk for you 2 Log onto drive A by typing A lt RETURN gt Make the directory on your hard disk for exampl
45. returned to Irradian for investigation repair and calibration 40 APPENDIX C FILE NAMES AND EXTENSIONS FILES SUPPLIED ON SPECTRO DISK TYPE NAME DESCRIPTION EXE All program files SPECTRO OVR Overlay code for SPECTRO EXE REF Spectral calibration for each head and other tables of information used by SPECTRO CAL Files holding calibration data for different accessories COL CIE colour coordinate data LOOKUP TBL Lookup table used to calculate CCT FNC User defined integral functions CHR Graphic font files BGI Graphic display drivers REFLECT STD Spectral reflectance of reflectance standard if supplied START OPT File holding all SPECTROs default and options FILES WHICH SPECTRO WILL CREATE AND USE DTA DTI Irradiance data files W m DTR Radiance data files W m st Broad band sensor data files if supplied DT Relative data files TME Files which hold data for variable time programmed scans STP Files which hold data for variable wavelength step scans CSV Comma Separated Value files created by SPRFILE for import into spreadsheets 4l APPENDIX D SPECTRORADIOMETER ACCESSORIES D I UPWELLING DOWNWELLING INPUT ACCESSORY An automated light guide input accessory can be attached to the spectroradiometer when applications require the measurement of reflectance for a surface or object Both the spectral irradiance downwelling onto the surface and the spectral radiance upwelling
46. ro Calibration OPTIONS and DEFAULTS Changing Defaults Graph Smoothing P amp Q Working Directory Default Z Speed Setting 26 27 28 28 28 28 28 28 28 29 29 29 29 30 30 3l 3l 3l CONTENTS SECTION 7 SECTION 8 SECTION 9 SECTION 10 SECTION Il APPENDIX gt PROGRAM OPTIONS CONT 7 8 BOOTUP TUTORIALS AND EXAMPLES 8 1 Scanning 8 2 Graphing EDITFILE SPRFILE FUNCTION SPECTRORADIOMETER ERROR CODES WAVELENGTH ACCURACY TEST FILE NAMES AND EXTENSIONS SPECTRORADIOMETER ACCESSORIES ENVIRONMENTAL CARE RECYCLING AND DISPOSAL Page 3l 32 32 34 34 35 SPECIFICATIONS Spectral Range Monochromator Type Bandwidth Wavelength Repeatability Wavelength Accuracy Stepper Motor Drive Resolution Filter Wheel Light Input Optics Detector Amplifier Stage Micro Controller Computer Interface Software Compatibility Calibration Operating Temperature Storage Temperature 200 to 800 nm 240 to 800nm with cosine diffuser Double concave holographic grating 1 100mm 2 nm standard nm optional 0 25 nm 0 5 nm 0 25 nm A 4 position filter wheel is fitted inside the double monoochromator with GG435 green high pass filter RG665 red high pass filter and an open and shut filter position Im 1 8m or 4 2m Quartz Flexible Light guides with Sideviewing Cosine Assembly Other lengths available Reflex Viewing Teles
47. s option will be chosen The second method is to use the cursor keys to move the gray highlight bar around the options When you highlight the desired choice press RETURN to choose it There is a gray HELP bar at the bottom of the screen This contains a helpful comment rel mio evant to the choice currently highlighted by the cursor rns Thehelp bar can be turned off here at the main menu by pressing Fl and turned back on using of date same key If the spectroradiometer is on all the options T M on this screen will be available to you If it is LONE E off the SCAN REAL BOOTUP and DIAGNOSTICS options will be disabled 1 Help OF Most menus in SPECTRO have a Quit or Escape option Remember that the ESC key will always cancel the operation you have chosen All the menus and choices work in a similar way Each menu option is described in detail in the next section and illustrated in the Tutorials amp Examples section NOTE Always end the SPECTRO program using the Quit option in the main menu Avoid using CTRL BREAK or CTRL C as this can leave the communications port active If you do end in this way reset your PC to avoid unpredictable results occurring in other applications 7 PROGRAM OPTIONS The following section gives a description of every spectroradiometer menu choice how to use it and when to use it 7 1 FILE Choose by pressing F or choosing
48. ss the FI key again to remove the HELP menu Single Graph 22 Linear graph 2 Blow Spectral Irradaince of HPA 400W Metal Halide Discharge Lamp 6 140E 01 W m 5 745E 03 Lux 2 120E 02 pmol mi s Calduell 2 934E 00 W m Setlow 2 069E 01 W m W n nn 9 00x10 1 8 50x10 1 8 00x10 1 7 50x10 1 7 00x10 1 6 50x10 1 6 00x10 1 5 50x10 1 5 00x10 1 4 50x10 1 4 00x10 1 3 50x10 1 3 00x1074 2 50x10 1 2 00x10 1 eT 1 50x10 1 00x10 1 5 00x10 2 0 00 VL M e mU si Wavelength Full Name C NSR DEMONHPA LAMP DTI Created 12 00 00 2 3 94 Size 10456 bytes 25 275 300 325 350 375 400 425 450 475 500 525 550 S75 600 625 650 675 700 DOS file name or file title information if written Three standard integrals Irradiance W m Illuminance Lux PAR umol m s Upto six user programmable integrals examples here are Caldwell and SetLow Auto scaling Y axis Irradiance Auto scaling X axis Wavelength Data file information Graph box 9e60o0oG00O0Q Example scan of metal halide discharge lamp type HPA 400 308 Graph settings in Option menu Graph type Linear Graph lines No Graph Box Yes File Information Yes 23 Log Linear Graph Q SUNLIGHT DTI 5 592 02 W m2 1 043E 05 Lux 2 592E 03 pnol m s alduell 1 767E 01 W m2 Setlow 2 073E 03 W m2 W m2 nn 10 1 X Wavelength nm gt Full Name C NSR DEMONSUNLIGHT DTI File Time Stamp
49. u see the Pizzaz Plus screen and menu displayed simply press P for print and then P for printer When done press ESC andanswer Y es to return to SPECTRO for Windows Capri ic 18501 Aplications Ta k t NOTE For best results set the print shades in Pizzaz Plus to REVERSED This ensures that you get a black on white printout See the Pizzaz Plus handbook for details on this Colour printing is also possible on ink jet printers 27 7 5 ANALYSIS Main This menu option allows you to carry out numerous mathematical operations on data files such as averaging subtraction of one file from another and calculating colour values Peyr lAlverage Files IB1iagnostics IS abtract Files Nlorwalise File IClolour Valwes Dliv x Files Multiply File Ref lectasce ESC Quit FicHelp DFF Retarn to Main Menu 7 5 1 AVERAGE FILES This option allows you to take up to five data files and average them You will be asked for a file name to store the results in The files are chosen in the same way as the files for a multiple graph section 7 4 Note that all the data files must have the same wavelength range and step size or the operation will be aborted 7 5 2 SUBTRACT FILES This option allows you to subtract one file from another This can be used to subtract ambient light from a scan for example Choose the files as before and enter a new f
50. ve would be entered as From 240nm Step 0 25 Until 350 From 350nm Step 2 Until 800 Save this as a STP file Y N Note that you can have upto 20 different step sizes in each file If you try to enter more than 20 the program will take the last step upto 800nm 7 2 4 PROGRAMMABLE MULTIPLE SCANS If you enter 0 when asked How many scans you can create a one day time table for scans This be saved and used again as a TME file This also works in the OPTIONS screen The screen will show Scan 1 Enter the required time in 24 hour notation you do not need to enter the symbol If you make a mistake backspace will move back to the last digit Once you have entered the first time enter other times in the same way Alternatively if you press first you can add a time step in minutes from the last time entered Note that times entered must be sequential for example you cannot enter Scan as 13 00 and then scan 2 as 10 00 When you have finished press RETURN on a new line Once the time table is created you can save it if you wish SPECTRO will then ask you how many days to repeat the timetable for This enables you to program scan times and then take these scans over a period of days or weeks Note that both the programmable step size and programmable scan time can operate at the same time 7 2 5 REFLECTANCE TRANSMITTANCE If you have the extra reflectance transmittance software when you ch
51. y available This is so that high health standards and a lasting environmental protection can be achieved and main tained This product has been designed and manufactured using high quality materials and components many of which can be recycled and refused Please remember to observe the local regulations that govern both the disposal of the packaging materials accompanying this product and any used batteries DO NOT DISPOSE OF THIS PRODUCT IN YOUR GENERAL WASTE BIN Please inform yourself about your local WEEE collection system which is available for electrical and electronic products that are marked with the symbol shown here When disposing of this product please use one of the following options Use your local designated WEEE collection facilities to dispose of the complete product including cables detectors filters and accessories 2 Return the complete product back to Irradian marking it clearly as intended for WEEE disposal IRRADIAN LTD 9 Elphinstone Road Telephone 01875 898 083 Tranent Facsimilie 01875 616 528 East Lothian E mail info irradian co uR Scotland EH33 2LG Web www irradian co uk 45
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