Brewer MkIII Spectrophotometer Operators manual
REVISION HISTORY REV DESCRIPTION DCN # DATE APPD -- Initial Release 891 99-08-17 A Update 55 05-10-21 KBo B Update 06-06-26 KBo C Update 07-10-16 KBo D Update 08-10-16 KBo E Update 08-11-14 KBo
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MANUFACTURER'S GUARANTEE / WARRANTY If a warranty statement is not included in a purchasing contract, then the following warranty statement shall apply. NEW PRODUCT WARRANTY AND LIMITATION OF LIABILITY KIPP & ZONEN B.V. hereby warrants to its products to be free from defects in material and workmanship for a period of two years from date of purchase.
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Recommendations by Environment Canada Mark III Brewer Ozone Spectrophotometers are recommended by Environment Canada (EC) as the significantly superior model of Brewer instrument with which to measure ozone in the ultraviolet (UV) region of the spectrum. EC strongly discourages the use of other models of the Brewer instrument for the measurement of ultraviolet radiation or ozone in the UV because of the much poorer stray light performance of the single monochromator versions of the instrument.
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TABLE OF CONTENTS 1 SYSTEM OVERVIEW ..................................................................................................................... 7 2 SYSTEM DESCRIPTION ................................................................................................................ 9 2.1 SPECTROPHOTOMETER ..................................................................................................... 10 2.1.1 Mechanical Construction ...........................................................
APPENDIX F FACTORY TESTS ................................................................................................... 95 Setup and Calibration Tests .......................................................................................................... 95 SH Shutter-Motor (Slitmask Motor) Timing Test ............................................................................ 95 HV: High Voltage Test ..................................................................................................
1. SYSTEM OVERVIEW 1 SYSTEM OVERVIEW Refer to Figure 1.1 Brewer Spectrophotometers are a family of scientific instruments, which measure Ultra Violet radiation in the solar spectrum. By examining the differential absorption of select wavelengths in the UVB portion of the spectrum, determinations of Total Column Ozone and Total Column Sulpher Dioxide are inferred. In addition, especially with the MKIII double monochromator instrument, accurate spectral intensity profiles of UV radiation in the 286.
All of the above equipment is available from KIPP & ZONEN. The Brewer Spectrophotometer is supplied with a complete set of programs, which control all aspects of data collection and some analysis. The Computer is programmed to interact with an operator to control the Brewer in either a manual or fully-automated mode of operation. In both the manual and semi-automated modes the operator initiates a specific observation or instrument test by typing a simple 'command' on the Computer keyboard.
2. SYSTEM DESCRIPTION 2 SYSTEM DESCRIPTION The Brewer MKIII Spectrophotometer is an optical instrument designed to measure ground-level intensities of the attenuated solar ultraviolet (UV) radiation. The Brewer contains two modified Ebert f/6 spectrometers, each utilizing 3600 line / mm holographic diffraction gratings operated in the first order.
Figure 2.2: 2.1 View of Brewer with Covers Removed SPECTROPHOTOMETER Table 2.1: Spectrophotometer Specifications UV wavelengths: Mercury-calibration Resolution Stability Precision Measurement range Exit-slit mask cycling O3 Measurement accuracy Ambient Operating temperature range (for more information see appendix F, Thermal Test) Physical dimensions (external weatherproof container) Power requirements Brewer and Tracker 10 ‘ozone’ wavelengths (nm): 303.2 (Hg slit) , 306.3, 310.1, 313.5, 316.8, 320.
2. SYSTEM DESCRIPTION 2.1.1 Mechanical Construction Refer to Figure 2.1 and Figure 2.2. The Brewer Spectrophotometer is housed in a weatherproof container constructed from two pieces - a base, to which all optical and electronic assemblies are anchored, and a removable cover. When the cover is fastened in place, a weatherproof seal is formed between the top edge of the base and the bottom of the cover. The dimensions of the assembled container are 70 x 46 x 34 cm.
Jumper setting Minimum temperature 1-2 20°C 2-3 10°C The default setting is a minimum temperature of 20°C. Zenith Pointing System Refer to Figure 2.3 and Table 2.3 A right-angle zenith prism [ZP 1] directs incoming light from the sun, the sky, or the test lamps onto the optical axis of the instrument. For zenith angles in the range 0° to 90° the sun, or sky, is viewed through an inclined quartz window.
2. SYSTEM DESCRIPTION Specifications of the Zenith Motor: Resolution: ±0.13° Accuracy (24 hours): ± 0.25° Angular range: 0 - 270° Table 2.2 Optical Components of Brewer Spectrophotometer Identification AP 1 ES 1 EX 1 EX 2 FW 1 FW 2 GR 1,2 HL 1 IR 1 LE LE LE LE LE 1 2 3 4 5,6 LE 7 MI 1,2 ML 1 PM 1 QW 1 SL 1 SM VL 1 VP 1,2 ZP 1 Description Fixed aperture, 11.18 mm Entrance slit plate, dia: 26.37 mm, thk: 0.10 mm Slit, length: 3.30 mm, width: 0.34 mm. Exit slit plate, length: 28.95 mm, width: 19.
Figure 2.4: Optical Elements of Brewer Spectrophotometer Lamp Assembly A quartz-halogen lamp [HL 1] provides a well-regulated light source which is used as a reference for sensitivity measurements. The lamp is powered by a constant current source of nominal value 1.5 A, held to within 0.5% over a temperature range of -20° to +40° C. The intensity of the radiation from the lamp under these conditions is stable to within 5%.
2. SYSTEM DESCRIPTION Figure 2.5: Top View of Spectrophotometer FOREOPTICS Refer to Figure 2.4 and Figure 2.5 The automated system drives stepper motors which control three elements in the foreoptics assembly - the Iris Diaphragm, Filterwheel #1, and Filterwheel #2. The associated driving and sensing electronics are integrated into the Main Electronics board. The Brewer software automatically controls motors once the Configuration File has been appropriately configured.
When the instrument is aligned to view sunlight, an image of the sun is focused at the centre of the iris. With the iris closed, about three solar diameters of skylight around the sun pass through the iris aperture into the spectrometer. With the iris open, about 10° of skylight enters the spectrometer. On the spectrometer side of the iris there is another plano-convex lens [LE 3]. This lens is positioned such that its focal point is in the plane of the iris.
2. SYSTEM DESCRIPTION Spectrometers Detailed Description Light enters the entrance slit and passes through a tilted lens [LE 5] which corrects for the coma and astigmatic aberrations inherent in an Ebert system. In the first spectrometer the light is collimated by a spherical mirror onto a diffraction grating where it is dispersed. A second mirror reflection focuses the spectrum onto the focal plane of a slotted cylindrical slit mask positioned at the entrance of the second spectrometer.
depression with a tetrahedral corner at the other end of the pushrods locates a 60-degree cone mounted on the end of the grating lever arms. The pushrods are secured between the micrometer shafts and lever arms by tension springs. The material of the pushrods has been selected to minimize differential temperature effects. The micrometers are rotated by stepper motors . The motors drive two 10-tooth gears which are kinematically linked to 60-tooth gears on the micrometer shafts.
2. SYSTEM DESCRIPTION Photomultiplier Detector (PMT) Light passing through the exit slits is collected on the cathode of a low-noise PMT detector [PM 1]. The photon pulses are amplified, discriminated, and divided by 4, before being transmitted to a counter. The resulting photon count is registered in one of six wavelength channels. Radiation through the exit slits is focused onto the cathode of the PMT by a 38.1 mm focal-length quartz Fabry lens [LE 6].
• Pulse Amplifier - mounted in close proximity to the photomultiplier, amplifies and scales the photon-pulse signal from the photomultiplier, and transmits the conditioned photon signal to the Photon Counter • Lamp Control board - provides constant current control of the two test lamps in the instrument. It also provides monitor information such as lamp voltage and current which is sent to the A/D converter of the Main Electronics Board.
Table 2.5 Specifications for the Azimuth Tracker Resolution Accuracy (24 hours) Max. slew rate Max. angular excursion Payload capabilities: Max. static torque Max. balanced weight Operating temperature range Dimensions Chassis Enclosure: Height: Power requirements: 2.3 ±0.02°. ± 0.2° 3.91° /sec -60° to +420° 14.9 Nm 50 kg -40° to +40°C 30.5 by 30.5 by 35.6 cm 91.4 cm, with tripod 45.7 cm (18 inch) without tripod 120 V AC 60 Hz @ 0.5 A 240 V AC 50 Hz @ 0.
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3. BREWER SYSTEM SETUP 3 BREWER SYSTEM SETUP Prior to accepting a shipment from the carrier, the containers should be inspected for damage. If any dents or major scratches, cuts, etc. are evident, a damage claim should be filed with the carrier. Only after incoming inspection and operational tests of the Brewer are successfully completed, should the shipment be accepted. These instruction lead an installer through the Setup of a Brewer Spectrometer.
24 Figure 3.2 Brewer Equipment Setup Figure 3.
3. BREWER SYSTEM SETUP 3.1 SPECTROPHOTOMETER UNPACKING AND SETUP 1. Open the Brewer crate and inspect the contents - at least the following items will be found: - Brewer Spectrophotometer - AC Power Cable, BA-W12 - Data Communications Cable, BA-W68 - RS422/RS232 Data Set and AC Power Converter - Manuals (Operator’s, Service, Final Test Record) - Basic Spares Kit, BA-C112 - Brewer System Diskettes (three diskettes) 2.
Figure 3.4: 26 Brewer Spectrophotometer Tripod.
3.3 AZIMUTH TRACKER UNPACKING AND SETUP Refer to Figure 3.3. 1. Open the Azimuth Tracker box, remove the Tracker, and inspect it for damage. 2. Mount the Tracker onto the Tripod and secure it with the bolts provided. 3. Remove the front and rear covers from the Tracker, and note the spare fuses and mounting bolts taped to the inside wall of the Tracker. 4. Locate the Safety Switch, which can be found inside the Tracker housing, mounted on the diagonal support bar.
final tightening. Care must be taken not to overtighten the bolts as the rubber feet may be damaged. 4. Connect the AC Power Cable to the 120V/230V connector on the underside of the Tracker, and connect the Data Communications Cable to the Surge Suppressor Box assembly mounted to the underside of the Tracker. Always connect the power cables first, before connecting the communication cables. 5.
3. BREWER SYSTEM SETUP 3.5 BREWER OPERATING SOFTWARE Brewer Operating Software is provided on three 3.5” diskettes, with part numbers BA-E116, BAE118, and BA-U07, and will be installed in step 2. below. Disk BA-E116 contains files in directories \ , \DOS , \BREWER, \UTIL, \UV-LAMP. \ directory -- these are batch files, those with .BA_ extensions to be used as examples, and those with .BAT extensions to be used to launch the BREWER and the NOBREWER software.
6. Using a text editor again, open the “ICF” file as found in step 5. Line item #24 (following MKIII entry) is the number of the COM: port to be used for communications with the Brewer - the number shown (1 or 2) must match the Computer COM: port number which will be used in this installation, and should be changed if it is not correct - - note that 1 and 2 are the only valid entries. 7. Go to the C:\Brewer directory, and with the text editor, open the file OP_ST.
3. BREWER SYSTEM SETUP 5. 6. Turn Computer equipment power ON, and launch the Brewer program. • the “Brewer” screen will appear, and a number of files will be “merged” • the FR routine will load and the Micrometers will RESET. • the Data Set will indicate communications are occuring by periodic flashes of the TX and RD lights.
10. SELECTING SITE : At the cm-> prompt type LL, and press Enter. • a list of Site Names will appear. • type the number of the desired Site and press ‘Enter’ twice. • the Tracker position will update according to the information entered in step 9, and the new site name will appear on the Main Menu screen. 11.
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7. Mount the Tracker onto the Tripod, orienting it such that the “N” marking on the lower Tracker flange is pointing approximately toward geographic North. 8. Remove Covers from the Tracker, and locate the Safety Switch - monitor the Switch during the following operation so it does not become activated, and the nylon cord does not become broken. 9. Place a spirit level on top of the Tracker and do not move it for the duration of the following levelling operation. 10.
4. BREWER COMMANDS 4 BREWER COMMANDS 4.1 RESERVED KEYS: HOME, DEL, CTRL+BREAK, F KEYS HOME This key can be pressed to terminate an observation or operation prematurely. It should only be used if the message " press HOME key to abort " is displayed on the screen. There may be a delay between the time when the DEL key is pressed, and the Main Menu appears, as some aborted activities take longer to terminate. DEL This key is not normally used for routine work.
4.2 BREWER COMMAND SUMMARY Following is the Command Set of the Brewer Spectrophotometer. Commands are entered at the command line, cm->. Note that only two character commands are accepted in a ‘multiple command’ string or in a schedule. Commands may be entered as a series of single commands; each followed by ‘Enter’, or as a command string, consisting of a series of commands, and followed by ‘Enter’ (i.e. pdaphg ‘Enter’).
4. BREWER COMMANDS B2 Standard Lamp ON B2 turns on the internal Standard test Lamp and is useful in a command sequence (i.e. B2ZSSL) where the ZS measurement is taken while the Standard Lamp is warming up. Note that if the SL does not execute for some reason, the Lamp may be left on and should be turned off with the B0 command. CF Instrument Constants File Update CF accesses the Brewer’s Instrument Constants File and allows the operator to make changes.
DA Date Set The Brewer ephemeris requires GMT (both date and time) for proper operation. Under normal, uninterrupted operation, the computer, and Brewer, dates will change at 00:00:00 UT, and are displayed on the monitor screen. Under some conditions (power failure at 00:00:00 UT), the date may not update, and may have to be corrected manually. The pointing system updates automatically when a new date is entered. This command requires operator input.
4. BREWER COMMANDS DSSUM Direct Sun Data Summary DSSUM reads the daily Data (B) file and printouts out the summary of the day’s DS measurements. An entry is also made to the OZOAVGYY.nnn file. The DSSUM command is usually used as part of the ED command. See also Appendix . DT Dead Time Measurement Dead Time is a measure of how long a photon counting circuit is “dead” (or cannot count a second photon) after a first photon has been detected.
FM Focused Moon Observation FM results in an O3 observation to be taken with the moon as the radiation source. The Brewer Zenith Prism and Azimuth Tracker are oriented to the moon, the Iris is opened, FW#1 is rotated to the position 3, and FW#2 is adjusted for maximum intensity, starting at position 2. Data is recorded on disk and is printed as previously determined by PN, PD, and PF commands.
4. BREWER COMMANDS GS Gratings Data Collection GS initiates a routine that collects data required to calculate Grating Slope and Grating Intercept values, which ensure that the two gratings are synchronised during scanning. The routine performs a scan on slits 1 through 5. Data is written to a GSJJJYY.nnn file, and can be processed by the RD_GS.EXE program to calculate the Grating Slope and Grating Intercept to ensure that the two gratings are synchronised during scanning operations. GS and RD_GS.
LF Location File Update The LF command displays a list of some of the known locations of Brewer sites throughout the world. The geographical co-ordinates of the current site may be entered and/or modified. LL Location Update The LL command allows an operator to change the co-ordinates of a Brewer location, or for the selection of another site contained the location file. NO Change Instrument The NO command allows the instrument number of the Brewer to be changed.
4. BREWER COMMANDS When the equipment has been set up as per the instructions in Section of this manual, and the QS command issued, a report is generated which shows the stability of the instrument at 3.5nm increments using the first generated set of readings as a reference. For the test, the iris is opened, FW#1 is set to position 3, and FW#2 is set to position 1. See Appendix A for the LAMP_LLL.nnn file, and Section 6 for more on QS. QL Lamp Quick Scan QL is a command based on the QS command.
SH Slit Mask (shutter) Motor Timing Test Normally a factory test, the SH command is used to determine the timing constant used in the control of the slit mask motor. See Appendix F. SI Solar Siting Brewer observations using the solar disc as the radiation source require that the Zenith Prism of the instrument be pointed very accurately toward the sun. The SI command is used in the initial set-up of the instrument and for subsequent checking of pointing accuracy.
4. BREWER COMMANDS SR Azimuth Tracker Steps Per Revolution SR initiates a test that determines the number of motor steps required for one complete revolution (360°) of the Azimuth Tracker. The tracker is first zeroed in the counter clockwise direction, and a discrepancy between where the software thought it was, and where the zero reference was found, is output.
46 TU Test UV Port Alignment TU uses an external quartz-halogen lamp mounted over the UV dome to find the zenith motor step position for which the radiation intensity is a maximum through slit #1 of the spectrometer slit mask. This is an alignment test and should be performed if alignment of the UV optics is suspect. The results of the factory tests are found in the Final Test Record and are nominally 2112+/4 steps.
4. BREWER COMMANDS UL UV Lamp Scan UL is a test command that results in a UV scan being performed with a Lamp (rather than the sky) being the source of radiation. The zenith prism is rotated to the UV dome, FW#2 is set to the 1 position, FW#1 is set to the 3 position, the iris is opened, and the tracker is rotated to the sun. The operator is asked for lamp number, and lamp-diffuser separation, and the radiation intensity is measured in 1.5nm increments over the UVB range. Data is stored in a ULJJJYY.
ZB, ZC, ZS Zenith Sky Observations ZB, ZC, and ZS are variations of the same command, and are used when sky conditions are known and it is desirable to keep the observations separated. ZB is usually used in clear sky conditions (Zenith Blue), ZC is used under cloudy conditions (Zenith Cloud), and ZS is used when conditions are unknown (as is a schedule).
5. ROUTINE OPERATIONS AND MINOR MAINTENACE 5 ROUTINE OPERATIONS AND MINOR MAINTENANCE This section is written for the Brewer Operator, and is meant to be a guide in determining if the Brewer is functioning correctly. It is assumed that the Operator has attended training by KIPP & ZONEN personnel at the time of installation.
Inside Checks Interrogate the Computer Screen and confirm that it is normal. # Name Example Description 1. Available Memory 1234567890 -the amount of free space on the Brewer Data drive 2 Next Command Zs - indicates the next command to be executed 3. Schedule Skd1 - Indicates the current Schedule being executed 4. Current Command Ds -Indicates the current Routine being executed -‘menu’ is displayed if a schedule is not running 5.
5. ROUTINE OPERATIONS AND MINOR MAINTENANCE 18. Current Activity - Comments about what the Brewer is currently doing. 19. Most Recent Measurement 429.4 - Most recent successful measurements of a certain type (ds O3, zs O3 and ds SO2). 20. Ave. of Day’s Measurements 430.7 - Average of all successful measurements of a certain type taken in the current day. A typical screen is shown below.
1. HG SUMMARY There should be no errors printed which might indicate a Micrometer positioning problems. Check that there are no (or few) cases where it appears that the HG required multiple attempts do complete a successful calibration. Note the Intensity and watch for trends in intensity increasing or decreasing. 2. SL SUMMARY Note the R5 and R6 ratios and the F1 intensity, and watch especially for sudden changes that could indicate a malfunction. Gradual changes over time are to be expected.
5. ROUTINE OPERATIONS AND MINOR MAINTENANCE 5.2 WEEKLY TASKS There are a number of tasks which should be performed and results recorded at least weekly. 1. Steps per Revolution (Section 6.14) 2. Solar Siting (Section 7) 5.3 INFREQUENT TASKS This section deals with true ‘infrequent’ tasks, as well as those that are more for the integrity of the data than for the operation of the Brewer. The timing of many of these tasks is usually determined by the “Scientific Authority” of the observation site. 1.
Tracker Drive Mechanism - See Figure 5.2 If the Steps per Revolution test returns an erratic result, or a variance that is more than about 20 steps, then the large aluminum drive wheel and the small stainless steel drive rod should be inspected and cleaned with a dry tissue. If no slippage is observed in the SR, then the cleaning should be done approximately every 3 months. If Tracker slippage is not due to dirty drive gears, then drive gear tensions should be checked.
5. ROUTINE OPERATIONS AND MINOR MAINTENANCE Zenith Drive The middle gear on the zenith drive has a hole to allow a small drop of low temperature rated light oil to be applied approximately once a year. The Zenith drive gears can be cleaned with a lint-free cloth at the same time. Cover Latches In very moist climates, the internal mechanism of the cover latches can become rusted and become very difficult to turn. Applying a few drops of light oil periodically will help to prevent this annoyance.
Backup Battery The Clock battery on the Main Electronics PCB has an extremely long lifetime under normal operation (power always on) of the Brewer, and it is unlikely that it will have to be changed for many years. In the event that the Battery does require replacement, it can be accessed on the PCB by removing the seven screws securing the rear PCB protective plate, and sliding the plate up. The battery is located on the lower left hand corner of the main circuit board.
6. UV STABILITY CHECK - QL 6 UV STABILITY CHECK - QL Objective: To verify the instrument stability for UV measurements with the optional BA-C126 UV Stability Kit. The stability kit contains five 50W quartz envelope UV lamps. Recommended Frequency of Check: Approximately once every two weeks. Limitation: The UV calibration check procedure assumes KIPP & ZONEN ’S portable UV lamp assembly, BAC126, is to be used.
6. Press the yellow button of the Voltmeter while turning the meter from the OFF position to the DC VOLTS position. Release the button after two or three seconds. The meter will display three decimal places. (If the yellow button is not depressed while turning on the Voltmeter, it displays two decimal places.) 7. Allow the lamp to warm up for about 10 minutes. Periodically adjust the voltage to maintain a stable level of 12.000 +/- 0.003 volts.
6. UV STABILITY CHECK - QL General Instructions: 1. Three lamps should be scanned bi-weekly. If all three lamps give approximately the same results, then the test is complete. If one lamp gives results that are different from the other two, then a fourth lamp should be chosen and the scan run yet another time. The lamp giving the ‘odd’ reading should be noted and not used again. 2.
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7. SOLAR AND LUNAR SITING – SI, SIM 7 SOLAR AND LUNAR SITING - SI, SIM Accurate measurements depend on the instrument being aligned very accurately to the Sun (or Moon). Not only is this important for the direct measurements, but for reasons of polarisation and consistency, it applies to all measurements. During installation, care is taken to ensure that the Brewer is oriented properly, but it is not possible to mechanically align the Tripod and the Tracker to the accuracy required.
5. Return to the Computer and follow the instructions for saving the new siting information. Before saving new values, recheck that the Date and Time are correct. For accurate tracking to take place the Tracker must be quite level. Levelling can be checked by alternating the times of day when siting is done - check the siting in the early morning on one day, and in the late afternoon on another.
8. BREWER SCHEDULES – SE, SKC, SK 8 BREWER SCHEDULES - SE, SKC, SK A most important feature of the Brewer is its capability to run for longs periods of time in an unattended state. The Brewer system is able to achieve this Automatic operation the use of Schedules Operation. A schedule is simply a file containing a list of instructions which the Brewer software executes.
Approximate run times for the following measurements are shown below: HG (without SL(without B2) DS ZS UV UX UM 7-9 min. 9 min 3 min 4 min 8 min 6 min Indeterminate must be aborted with HOME key or new schedule entry FM 11 min Writing Schedules: 64 • Determine the Scientific Objectives, and draw up a table of Solar Zenith Angle vs. Commands. • Use the SA command to assist in relating to local time. • From the Brewer main menu, send the Command SE.
APPENDIX A BREWER DATA FILES APPENDIX A BREWER DATA FILES D Files: DJJJYY.nnn -- ‘D’ or Disk files are produced when the PD command has been issued, causing the software to ‘print to disk’. These files usually contain end-of-day summaries and/or test data. B Files: BJJJYY.nnn ‘B’, or Brewer, files contain the raw data collected by the Brewer. B files begin with the characters “version”. The beginning of a B file contains three sections: the version string, the instrument constants, and a data header.
HG Calibration Data Example Hg 12:10:22 .9995 287.1829 287 190255 28 Name Type of measurement Time of measurement Correlation value Calculated micrometer step Micrometer set to this step # Peak intensity of the HG scan Temperature (deg. C) Correlation Value: - The corelation between the stored and measured spectra. - Calculated Micrometer Step number - The micrometer position of the HG peak Standard Lamp Test Data # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Example Sl A 0 737.
APPENDIX A BREWER DATA FILES # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Example Summary 12:19:09 mar 08/ 98 104.612 3.777 6 sl 0 1523 662 -126 -783 4028 2056 824997.5 971515.6 2 3 4 4 13 8 387 632 Name Summary header Time Month Day Year mean zenith angle during measurement mean airmass temperature (deg.
These lines are repeated for 5 DS measurements which are then averaged. # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Example Summary 16:20:02 mar 08/ 92 68.024 2.617 -5 ds 1 15578 8312 2801 -5 15594 6920 .3 404.4 71 28 16 5 56 11 .4 .6 Name Summary header Time Month Day Year zenith angle Airmass Temperature (deg.
APPENDIX A BREWER DATA FILES These lines are repeated for a total of 7 measurements, which are averaged. # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Example Summary 16:16:09 Mar 08/ 92 68.477 2.667 -5 zs 0 14757 8003 2704 72 14526 6528 -48.6 404.8 57 29 13 5 51 21 3.2 2.1 Name Summary Header Time Month Day Year zenith angle air mass Temperature (deg.
16 17 18 19 20 21 22 23 24 25 26 27 625382 120 97706 294523 759956 1087648 962462 rat 105525 5722 1572 -574 raw counts wavelength #0 dark count raw counts wavelength #1 raw counts wavelength #2 raw counts wavelength #3 raw counts wavelength #4 raw counts wavelength #5 Ratio Single ratio #1 MS(4) Single ratio #2 MS(5) Single ratio #3 MS(6) Single ratio #4 MS(7) S Files: SJJJYY.
APPENDIX A BREWER DATA FILES XLJJJYY.nnn - Extended Lamp Scan # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Example Integration time is 0.2294 seconds per cycle dt 3.4E-08 cy 1 le 154 ln 608 di 5 dh 15 01 99 Saskatoon 52.108 106.713 3.43 pr 960 Dark 1 Name Integration time 960.8 2865 256 121.1 decimal minutes since 00:00 hours Wavelength (Angstrom) micrometer step number raw counts lines 18-21 repeat for wavelengths from 2865A to 3630A in 5A increments ...
A/D Values: -- A/D values are not stored in files (except HV and +5v and SL current), but they are very important in assessing the health of the Brewer, so they are included here for reference. A/D Values for nov 15/98 at 17:03:05 for instrument number 159 Channel# 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 72 Name PMT temp (deg C) Fan temp (deg C) Base temp (deg C) H.T.
APPENDIX A BREWER DATA FILES PO Values: -- The PO command generates the following. MKIII BREWER INSTRUMENT #159 ---------------------------01-05-1998 17:02:42 *************************************************************************** * Ozone Values * 1 * 2 * 3 * 4 * 5 * hg * *************************************************************************** Wavelength(nm) * 306.289 310.035 313.486 316.787 319.978 303.184 Temp. Coeff * 0.0000 -0.2473 -0.6914 -0.6902 -1.2794 0.0000 Disp. Coeff #1 * 2856.960 2896.
Average files: ???AVG.nnn and OZOAVGYY.nnn The Brewer is a ‘statistical’ instrument, and instantaneous deviations from the norm are not uncommon. The purpose of average files is to provide a daily value for a specific measurement or test result. It is normal to plot the data in average files vs time (days) to observe trends in data and test results. APOAVG.nnn - Analog Printout Log The values should be monitored for power supply stability. 1 08591 08691 1. 2. 3. 4. 2 1566.80 1555.86 3 5.17 5.17 4 1.61 1.
APPENDIX A BREWER DATA FILES H2OAVG.nnn Humidity Log File The file is updated during the AP command at the End-of-Day. 1 29098 29198 1. 2. 3. 4. 5. 6. 2 23.939 25.648 3 21.186 25.458 4 24.793 25.078 5 3.60 2.68 6 19.4 11.3 Julian day (jjjyy) Temperature at the PMT (°C) ‘Fan’ Temperature in °C - used in the absolute humidity calculation. Temp of base plate (°C) Moisture measured in grams of water per cubic meter of air. Relative Humidity (%) HGOAVG.nnn 1 08391 08491 08591 1. 2 3. 4.
OPAVG.nnn -- Operating Constants Log Used to keep a record of changes to the operating constants used in the Brewer. Updated during the ED or when the CF or IC routine is used. The first column of the file is the routine that generated the entry in the operating constants log (IC, CF or ED). The rest of the entries are identical to the OP_ST.nnn file. See Appendix B. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ED 159 c:\bdata\ icf31098 zsf13998 dcf11798 07 12 98 Saskatoon 52 107 1000 3.
APPENDIX A BREWER DATA FILES FZOAVG.nnn 1 2 3 4 5 6 17897 326.3 +11 -3.1 +1.2 31/ 17997 342.3 +3.3 -3.1 +1.0 13/ 18097 323.6 +2.9 -2.9 +0.9 9/ 1. 2. 3. 4. 5. 6. 7. 8. 9. 7 77 56 55 Julian day DS ozone Standard deviation DS SO2 Standard deviation Good Observations Total Observations Harmonic mean of mu Representative hour 8 192 179 190 10. 11. 12. 13. 14 15. 16. 17. 9 10 11 12 13 14 15 16 17 12 44.7 +13.5 -28.6 +12.8 7/ 7 508 8 13 0.0 +0.0 +0.0 +0.0 0/ 3 0 0 14 332.6 +0.8 -25.3 +6.
DUVJJJYY.nnn: Gives the Daily DUV. Time DUV 6.1860 4.402109 8.5610 65.338420 9.8725 132.457100 12.7702 219.891700 15.7105 105.198000 16.3337 69.199570 17.1518 40.585530 17.9707 16.680470 18.7878 5.160622 19.6043 0.597062 Time is in decimal hours from 00:00:00 GMT 2 DUV is in mW/m /nm UVOAVG.nnn 1 20898 20998 2 2073.4 3559.2 3 14 14 4 21 27 5 20 20 6 uvr13398.159 uvr13398.159 1. Julian day and year 2. daily weighted Diffey UV, Joules 3.
APPENDIX A BREWER DATA FILES LAMP_LLL.nnn - Lamp File The Lamp file is created at the factory by an initial Quick Scan. Subsequent QS scans append data to LAMP_LLL.nnn, using the first line as a reference. Column 1 2 3 4 5-15 16 Description Julian date Distance from lamp filament to PTFE diffuser pmt temperature Dark count Intensities at 11 wavelengths DUV calculation based on the lamp intensities QL_LLL.nnn - Lamp File The Lamp file is created at the factory by an initial Quick Lamp Scan.
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APPENDIX B CONFIGURATION FILES APPENDIX B CONFIGURATION FILES ICFJJJYY.nnn - Instrument Constants # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26-31 32 33 34-40 41 42 43 44 45 46 47 48 49 50 51 52 Example 0 -.2473 -.6914 -.6902 -.2794 0 .3446 2.35 1.1533 1690 215 4E-08 286 14 1688 0 5000 10000 15000 20000 25000 2972 Mkiii 1 0 0 2310 .998 1.901 2469 250 0.
OP_ST.nnn - Operating State File The operating state file controls many of the operating parameters of the Brewer. The left column lists the actual value written in the OP_ST.nnn file. The middle column is the BASIC variable name used in the Brewer software to contain this value, and the right column is a description of the value's meaning. # SW Variable 1 046 NO$ 2 \BDATA DD$ 3 ICFjjjyy ICF$ 4 ZSFjjjyy ZSF$ 5 DCFjjjyy DCF$ 6 UVRjjjyy UVR$ 7 01 DA$ 8 01 MO$ 9 99 YE$ 10 Saskatoon LO$ 11 52.108 L1$ 12 106.
APPENDIX B CONFIGURATION FILES DCFJJJ.nnn - Dispersion constants The Dispersion Constants are used to calculate the ozone wavelength of the exit slits. # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Example Disp 2856.96 7.674577E-02 -7.251786E-07 2896.561 7.600413E-02 -7.387072E-07 2933.527 .0751006 -7.337653E-07 2968.578 7.440717E-02 -7.512483E-07 3003.31 7.325987E-02 -7.065609E-07 2823.907 .0774763 -7.
UVRJJJYY.nnn First column: wavelength in Angstrom. 2 Second column is responsivity in counts/mW/m /nm. ZSFJJJYY.nnn (ZSFVAL)- Zenith Sky Constants Zenith Sky constants are used in the ZS ozone calculations, and are Location/Brewer dependent. They are derived by making a comparison of near simultaneous DS and ZS measurements over a wide range of mu and ozone values (usually many months). The values supplied in ZSFVAL.
APPENDIX C UV PROCESSING APPENDIX C UV PROCESSING LAMP DATA ANALYSIS Brewer Response Files RESIII.EXE is used to determine the responsivity of a Brewer with the aid of data from a calibrated external tungsten-halogen lamp. Requirements for program execution are a LAMP_LLL.IRX file for each lamp used, and the XL or UL file, XLJJJYY.nnn. The output of this program is a new response file. It is recommended that the new response files be named with the format UVRJJJYY.nnn.
Lamp Irradiance Files RD_UX.EXE is used to process external lamp scans from the XL or UL routine to produce lamp irradiance files. The input files are in units of raw counts per second, the output files have units of 2 2 W/m /nm or mW/m /nm. Instructions: 1. Create a test directory and copy RD_UX from the uv-lamp directory to the test directory. 2. Copy the UL or XL file(s) that you wish to process to the test directory. 3. Create a /nnn directory in your test directory (nnn is your Brewer number). 4.
APPENDIX C UV PROCESSING For AB_UVDAT daily irradiance integration is the sum of histograms that are as wide as the average of the difference of the time for the following and the previous scan and as high as the irradiance for that particular scan. For the most representative daily integral values it is recommended that UV scans be taken throughout the daylight hours at regular zenith angle intervals. Histogram summation starts at the time of the first UV scan and stops at the time of the last UV scan.
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APPENDIX D NO BREWER APPENDIX D NOBREWER It is often useful to be able to operate the Brewer software without having a Brewer connected to the Computer. A batch file, C:\NOBREW.BAT, has been developed which sets a number of operating parameters to make the software think that Brewer communications are taking place. In this mode of operation a number of operations can be done: -- Schedules can be written using SE and the solar angle information can be printed using SA.
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APPENDIX E UMKEHR PROCESSING APPENDIX E UMKEHR PROCESSING Umkehr profiles show the vertical distribution of Ozone in the Atmosphere from ground level to 50 km. Umkehr Ozone Profile 50 45 Height (Kilometers) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 Ozone Density (trillions of m olecules / cubic m eter) Using the UM.
1. Conventions: 2. All Umkehr Data and data processing programs should reside in a common directory. 3. The main programs for processing and analysis are: PREPRO.EXE TOMKEHR.EXE RUNPRE.BAT RUNUMK.BAT JJJYY nnn Julian day and year Brewer number -- a preprocessing program -- the Umkehr analysis program -- a batch file used to launch PREPRO.EXE -- a batch file used to launch TOMKEHR.EXE The proper execution of PREPRO.EXE and TOMKEHR.EXE requires that the following files also be present: UJJJYY.
APPENDIX E UMKEHR PROCESSING 7. Successful execution of TOMKER results in the creation of three files: USJJJYY.nnn UOJJJYY.nnn UNJJJYY.nnn suitable for graphing the ozone profile. Some useful information on the Umkehr processing software and its use may be found in the following three documents written by Dr. T.C. McElroy: -- Umkehr Inversion Algorithm for the Brewer Ozone Spectrophotometer -- Readme.Doc -- Readme.
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APPENDIX F FACTORY TESTS APPENDIX F FACTORY TESTS SETUP AND CALIBRATION TESTS The tests and calibration techniques described here are essentially those performed by the factory before the Brewer Spectrophotometer is shipped. [Refer to the Final Test Record for the set of test results, graphs, and derived constants for a specific instrument.] Some of these tests (HV, SH) would only be performed by the user after repair or replacement of one or more of the instrument's optical or mechanical components.
Method: Send the PDHPHG command sequence to the Brewer, wait for the tests to finish. The SH command is entered to start the slitmask-motor timing test. The program prompts for the minimum, maximum, and increment for trial values of the delay constant. Typical values are a minimum value of 2, a maximum of 30, and an increment of 2.
APPENDIX F FACTORY TESTS Method: 1. Turn off Brewer power 2. On the High Voltage module change jumper J2 from Pins 2-3 to Pins 1-2, and restore Brewer power. 3. Enter the HV command, and at the prompts, enter the PMT number, the preamp discriminator level, the minimum, maximum and incremental voltages for the test. For the PMT serno. and voltage settings see the Final Test Record.
APPENDIX F FACTORY TESTS 981 992 1002 1013 1023 1034 1044 1055 1065 1076 1086 1097 6. 18 17 15 18 19 19 22 19 24 25 26 29 144932 149962 153943 157825 160926 163407 165796 168082 170292 172626 175036 177199 34161 36371 39748 37200 36919 37488 35348 38561 34761 34525 34327 32905 985.7 995.8 1007.8 1017.8 1027.8 1037.9 1049.9 1059.9 1069.9 1082.0 1092.0 1102.0 A plot of the dark count and wavelength 1 intensity values vs the high voltage should be compared to the plot in the Final Test Record.
RS: SLITMASK MOTOR RUN/STOP TEST The RS test verifies that the slitmask motor (slitmask motor) is operating correctly. In the normal, or "dynamic" mode of operation the slitmask is cycled rapidly, permitting individual measurements to be made at intervals of 131 milliseconds. To ensure that the light intensities are being properly measured in this dynamic mode, the RS test also measures intensities in a "static" mode.
APPENDIX F FACTORY TESTS Position 7 allows simultaneous observation through slits 3 and 5. Dark count-corrected counts are stored in the BASIC F() array (refer to the Preliminary Data Reduction document for details). The following algorithm is used to derive a value for instrument deadtime: Assume Poisson statistics: N = N 0 ⋅ e − N 0 ⋅τ τ= 1 ⎛ N ⎞ ⋅ log e ⎜ 0 ⎟ N0 ⎝ N ⎠ where: No is the true count-rate (counts/sec), N is the observed count-rate, τ is the deadtime (sec).
FILTER #1/1 AND FILTER #2/1 GMT DEADTIME 191424 4.48950597E-08 191449 4.58755779E-08 191513 4.49521729E-08 191538 4.67340357E-08 191603 4.49957964E-08 191627 4.81735377E-08 191652 4.55349271E-08 191716 4.51368558E-08 191741 4.53192958E-08 191805 4.58533414E-08 45.747 ± 1 Following each block of measurements the deadtime mean and deadtime standard deviation (in nanoseconds) are calculated and printed.
APPENDIX F FACTORY TESTS Method: The command HG is issued. The program will read and display the current Brewer temperature, and a checklist of required foreoptic settings will then be displayed: *** measurement procedure *** check: 1 - filter #1 to position #1 2 - filter #2 to position #0 3 - open iris 4 - rotate director prism to lamps * press return when ready * These controllable elements will be set automatically.
Method: Type SL. The test runs through the same temperature and foreoptic positioning procedures described in HG, then waits the obligatory five minutes for the quartz-halogen lamp to warm up. The program then conducts seven measurement runs over the dark-count channel and the five operational wavelength channels. Each run cycles the slitmask through 20 oscillations, accumulating the photon counts in the BASIC one-dimensional F() array (described under Preliminary Data Reduction).
APPENDIX F FACTORY TESTS Method: The instrument is placed in a chamber where the ambient temperature is set to values between -10 and +35°C. (These temperature settings cause the internal Brewer temperature monitor to register between approximately -5 and +40°C.) The temperature is set for 2 hours at +35 °C and then gradually lowered by approximately 1.1 °C per hour, taking approximately 50 hours in total. A typical command sequence send to the Brewer during this test period is PDFR(HP)HGSLSLDTRSAPW2TE100.
polished stainless steel or white painted aluminium or steel sheet. It should not extend over the zenith window or dome. The Hamamatsu photomultiplier can be fitted to Brewers with serial numbers up to #190 using a retro-fit kit. SC: SCAN TEST ON DIRECT SUN The SC test determines the correct operational setting of the wavelength-adjusting micrometer.
APPENDIX F FACTORY TESTS Method: The method by which direct-sun O3 and SO2 values are derived from the raw photon counts at the five operational wavelengths is outlined in sections 2 and 3 of Preliminary Data Reduction.
APPENDIX F FACTORY TESTS Method: Type AZ . The following screen display appears while the program steps the azimuth drive towards its internal optically-sensed reference flange: *** zeroing azimuth press Del to abort The operator can abort the operation by pressing the DEL (delete) key; the program will return to the previously displayed menu.
APPENDIX F FACTORY TESTS Enter 'y' if you want to update the calibration value; type 'n' if you feel the test was unsatisfactory for any reason or if the value hasn't changed. A timestamped calibration record will be printed: AZ STEPS/REV = 14675 AT HH:MM:SS The Azimuth Tracker then returns to the solar azimuth and the previously displayed menu will appear.
APPENDIX G PRELIMINARY DATA REDUCTION APPENDIX G PRELIMINARY DATA REDUCTION This section describes how the Brewer software processes the raw photon-count data to determine ozone (O3) and sulphur dioxide (SO2) column amounts. Seven of the two-character menu commands (SL, SC, DS, ZB, ZC, ZP, M) access a common suite of data reduction algorithms, as shown in figure G.1. Figure G.
COMPENSATING FOR DEADTIME Poisson statistics are assumed so that for any observation at a true count rate F0 (counts/second) the observed rate F will be − F0 ⋅T1 F ← F0 ⋅ e where T1 is the deadtime of the photon-counting system (as determined by the deadtime test, DT, run as part of the Brewer setup procedures). This equation is solved for F0 by iterating 9 times on the (rearranged) expression: F0 ⋅T1 F0 ← F ⋅ e This compensation is performed for each of the five operational wavelengths.
APPENDIX G PRELIMINARY DATA REDUCTION These airmass calculations are imbedded within the "equation of time" computations. A second path-lengthening factor, M2, is also calculated. This airmass corresponds to a layer height of 22 km. COMPUTING SINGLE AND DOUBLE RATIOS At this point the count rates Fi have been corrected and compensated for deadtime, temperature, and (if applicable) Rayleigh scattering.
The SO2 determination is slightly more complicated because of the correction needed due to O3 : MS 8 − B 2 MS11 − A2 ⋅ A3 ⋅ M 2 A2 MS11 ← where A2 is the ratio of the SO2 absorption coefficient to the O3 absorption coefficient of the SO2 wavelength combination; A2 is nominally set equal to 2.44 A3 is the differential O3 absorption coefficient for the SO2 wavelength combination (instrument-dependent) B2 is the extra-terrestrial coefficient for the SO2 wavelength combination (instrumentdependent).
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) The TT command gives an operator direct control of various Brewer functions by allowing low level commands to be sent directly from the Computer keyboard. With this feature, most useful as a troubleshooting tool, all motors can be moved, lamps turned on, and data sampled. This command is useful only when the Brewer and Computer are communicating, and is sent from the Main Menu with the command, TT.
*Note: if the configuration variable USE.B3.FOR.LAMPS is set to YES then the lamps are both turned on with B,3. If the configuration variable is set to NO then the state of the lamps are not altered and the command is essentially ignored. Example B,2 Turn the standard lamp on and the mercury lamp off, update lamp state variables in the background. 2. F Define the fill characters to be used at the start of every transmission from the Brewer to the controller when using the TTY interface low level protocol.
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) Parameters The following table gives the permissible values for . 1 2 3 4 5 6 9 10 11 12 13 Motor Zenith prism Azimuth Tracker Iris Filterwheel 1 Filterwheel 2 Filterwheel 3 Micrometer 2 Micrometer 1 Slitmask 1 Slitmask 2 Zenith Tracker symbolic form of ZENITH AZIMUTH IRIS FILTER.WHEEL.1 FILTER.WHEEL.2 FILTER.WHEEL 3 MICROMETER.2 MICROMETER.1 SLITMASK.1 SLITMASK.2 TRACKER.ZENITH Example I,4 The motor used by Filterwheel 1 is initialized. 5.
6. LOGFINISH Resets the log to act as though the newest entry in the log has already been reported. Syntax LOGFINISH Example see LOGENTRY 7. LOGSTART Resets the log iterator to the oldest entry in the log. Syntax LOGSTART Example see LOGENTRY 8. ** M Move the specified motor to the specified position. If the motor hits a limit sensor during its movement, then the motor is reset to its initial position and the requested motor position is again moved to. This command requires configuration variables.
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) Parameters The are photon counts in the range 0 to 16777215, one for each slitmask position measured in the most recent R command. Example See section on the R command. 10. PMT Reads a count using the PMT. This command requires configuration variables. Syntax PMT Response The count value (decimal number using ASCII characters) is right justified and padded with spaces in a nine-character string.
Example R; O 0 If the above had been called before any other R command then a single zero is returned indicating that there were no scans taken. R,2,4,4;O[sent to Brewer] 5638, 4996, 54886[returned by Brewer] Sample and accumulate the light intensities for slitmask positions 2, 3,4,4,3 and 2. Repeat this sequence 4 times. In this example the O command is used to display example results. The returned counts correspond to slitmask positions 2, 3 and 4 respectively.
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) Response Parameters. Response format 0 - 127 Meaning number of sets of configuration parameters for which there was room when the operation started. 0 means that no room was left and parameters are not stored 14. STEPS Determines the number of steps in a complete revolution of the azimuth tracker. This command should always be immediately preceded by an I,2 command and followed by a ?STEPS query.
17. V Set the baud rate and the flag which controls echoing. Syntax V,[,] Parameters Parameter Examples V,120 format byte Boolean Meaning one of 30, 60, 120, 240, 480 or 960. The approximate number of characters per second. Baud rate set to 10* on to suppress character echoing The prompt ("->") after this command will be sent at 1200 baud V,960,1 The prompt ("->") after this command will be sent at 9600 baud and character echoing will be suppressed. 18.
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) The s format of Effective meaning of This is the Brewer ID used to manage next warm start BREWER.ID integer value (0-65536) multidrop protocol. Copied to NVRAM on or USECONFIG initialization. number of seconds before the PMT window CLOSE.
PMT.WINDOW.TIME float seconds Immediate RESET.TIME.OUT unsigned integer seconds on reset RH.ORIGIN float immediate RH.SLOPE Float SUPPLY.CONVERSION [] SUPPLY.DELTA[ ] SUPPLY.NOMINAL [ ] volt at 0 RH volt/% float immediate Immediate seconds in a window. Should be an integral multiple of PMT resolution time. the length of time allowed for initialization of all motors. This should be larger than the largest value of MOTOR.TIME.OUT.
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) 19. OPERATIONAL INFORMATION A variety of operational status values define the current state of the Brewer. Commands exist to set and read each of these.
MOTOR.POS [] MOTOR.LOST [] MOTOR.LIMIT.LOW [] MOTOR.LIMIT.HIGH [] MOTOR.REF.LOW [] MOTOR.REF.HIGH [] MOTOR.DISCREPANCY [] stepss Boolean no no current motor position current motor position unknown exactly Boolean no low travel limit sensor activated Boolean no high travel limit sensor activated Boolean no lower reference sensor (#1) activated Boolean no upper reference sensor (#2) activated paces no MOTOR.ZERO.
APPENDIX H COMPUTER / BREWER INTERFACE (TELETYPE) Examples ?MOTOR.POS[IRIS] reports the current position in half-step units of the iris motor. !SUPPLY.VOLTAGE.HIGH[+5V] 5.00 resets the upper voltage watermark to the nominal value for the +5 volt supply.
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APPENDIX I FIRMWARE LOG APPENDIX I FIRMWARE LOG Messages appearing in the Instrument Log (accessed using the RL command) have the following format: yyyy ddd hh mm ss yyyy ddd hh mm ss ... yyyy ddd hh mm ss The 'yyyy ddd hh mm ss' identifies the time on the instrument clock at the time when the message was recorded. The possible values of are given below. Usually there is only the . : Bad arraySpacing, AddVectors().
Bad command string. Command string buffer cleared. An illegal command was (not) processed. The subsequent message indicates the command. Bad digital output setting. Only ON/OFF allowed. (Self-explanitory) Checksum bad in low level command. During initialization, loadmode or opmode a message with a bad checksum was received. This is normal if an initialization starts while a packet is being sent and is of no consequence at that time. At other times it indicates a noisy communication line.
APPENDIX I FIRMWARE LOG Motor : Motor lost. The motor controller and the instrument controller are out of step. This error will be corrected next time the moter is moved. If this error persists for the given motor, please notify KIPP & ZONEN of the circumstances in which this message was generated. Motor : Move attempted outside of logical bounds An attempt was made to move the given motor out of bounds. If this error persists, please notify KIPP & ZONEN
Reset -> from until . Counts: , This is an information message. A message of this form is added each time the instrument initializes. The fields: The type of initialization that was requested.
APPENDIX J BREWCMD.EXE APPENDIX J BREWCMD.EXE The BrewCMD is a low level utility program to facilitate sending commands to and displaying responses from the Brewer. Hence it can be used for simple operation tasks. There are two versions of BrewCMD available: 1. BrewCMD.exe This version is a DOS based program and works fine with platforms such as W95 and W98, which are the most common platforms to operate the Brewer.bat software. This version of BrewCMD however does not work with WindowsXP. 2. BrewCMDW.
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Our customer support remains at your disposal for any maintenance or repair, calibration, supplies and spares. Für Servicearbeiten und Kalibrierung, Verbrauchsmaterial und Ersatzteile steht Ihnen unsere Customer Support Abteilung zur Verfügung. Notre service 'Support Clientèle' reste à votre entière disposition pour tout problème de maintenance, réparation ou d'étalonnage ainsi que pour les accessoires et pièces de rechange.
