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MKIII OPERATOR’S MANUAL 

 

 

 
 

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 286.5 nm to 363 nm range are measured. 
 
It is well recognized by the scientific community that marked fluctuations in atmospheric ozone and 
sulphur dioxide concentrations are linked to a variety of adverse environmental conditions. The 
ozone layer, which shields the Earth from the harmful effects of solar ultraviolet radiation, is 
believed to be vulnerable to attack by fluorocarbons and other effluents. Many scientists fear its 
depletion may irreversibly alter world climatic patterns.  
Atmospheric sulphur dioxide is closely associated with the 'acid rain' phenomenon which, like 
ozone depletion, has implications for the global environment. 
 
Today's concern over the vulnerability of the ozone layer to destruction by atmospheric pollutants 
has increased the demand for high-quality, globally-distributed, total Ozone and UV Spectral 
measurements from a ground-based network of instrumentation. Since the early 1980’s, the 
Environment Canada (EC) has conducted the development of the Brewer Spectrophotometer for 
the purpose of supplementing instrumentation in the World Ozone Network. Though the Dobson 
instrument has served its purpose well since the 1930s, the Brewer Ozone Spectrophotometer is 
today becoming the instrument of choice for researchers studying Ozone, Sulphur Dioxide, and UV 
radiation. 
 
 At the request of the World Meteorological Organization, the EC has endeavored to make the 
Brewer Spectrophotometer commercially available to the international scientific community. The 
instrument and its accompanying accessories are manufactured and marketed under license by 
KIPP & ZONEN, Delft, The Netherlands. As of 1998, more than 80 Brewer instruments have been 
incorporated into the World Ozone Network and measurements are currently being taken at 
research establishments in more than thirty different countries.  
 
The Brewer Spectrophotometer is the core component of a complete Brewer System which is 
comprised of the following: 
  
 

 

   Brewer Spectrophotometer 

 

 

   Solar Tracking System 

 

 

   IBM PC or compatible Computer operating Brewer Software 

 

 

   

 

 

1.   SYSTEM OVERVIEW 

Summary of Contents for Brewer Mk III

Page 1: ...Operators manual Spectrophotometer Brewer MkIII...

Page 2: ...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...

Page 3: ...ii...

Page 4: ...expressed or implied and includes without limitations any implied warranty of merchantability or fitness for a particular purpose and of any other obligations of liabilities whatsoever in any event fo...

Page 5: ...2...

Page 6: ...rior 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...

Page 7: ...4...

Page 8: ...COMPUTER DISPLAY 32 3 9 INITIAL TESTS 32 3 10 FINAL INSTALLATION 33 4 BREWER COMMANDS 35 4 1 RESERVED KEYS Home Del Ctrl Break F keys 35 4 2 BREWER COMMAND SUMMARY 36 5 ROUTINE OPERATIONS AND MINOR M...

Page 9: ...muth Tracker 106 SR Azimuth Tracker Steps per Revolution Calibration 107 The Humidity Sensor Test 108 APPENDIX G PRELIMINARY DATA REDUCTION 109 Converting Raw Counts to Light Intensity 109 Converting...

Page 10: ...lity of the ozone layer to destruction by atmospheric pollutants has increased the demand for high quality globally distributed total Ozone and UV Spectral measurements from a ground based network of...

Page 11: ...t by typing a simple command on the Computer keyboard Raw data is automatically recorded on the Computer data drive and real time Ozone and UV results can be printed In the fully automated mode a Sche...

Page 12: ...in a durable weatherproof shell which protects the finely tuned internal components The instrument operates reliably and accurately over a wide range of ambient temperature and humidity conditions Fol...

Page 13: ...Precision 0 006 0 002 nm Measurement range 286 5 nm to 363 0 nm Exit slit mask cycling 0 12 sec slit 1 6 sec for full cycle O3 Measurement accuracy 1 for direct sun total ozone Ambient Operating tempe...

Page 14: ...o minimize scattered light and provide a protective finish Mounted inside the Spectrophotometer is a cannister of desiccant which is designed to remove moisture from the air as the Brewer breathes wit...

Page 15: ...gure 2 3 Zenith Prism Targets Table 2 3 Spectrometer Targets for Various Zenith Angles Zenith angle Object viewed by Spectrometer 0 to 90 Sky or sun 180 Calibration lamps 90 UV diffuser The prism is m...

Page 16: ...source IR 1 Iris diaphragm aperture range 2 to 12 mm Edmund Scientific catalogue 40997 LE 1 Lens double convex G1 quartz focal length 25 4 mm dia 25 4 mm LE 2 Lens plano convex G1 quartz focal length...

Page 17: ...conditions is stable to within 5 The filament of the lamp is placed at the focal point of a double convex lens LE 1 so that the light from the lamp is directed along the optical axis by the zenith pri...

Page 18: ...lamp provides a line source for wavelength calibration of the spectrometer while a quartz halogen lamp provides a well regulated light source so that the relative spectral response of the spectrometer...

Page 19: ...tically adjust the light level entering the spectrometer AP 1 an 11 18mm fixed aperture located on the spectrometer side of the filterwheel housing limits the field of view of the spectrometer to f 6...

Page 20: ...ors SM 1 SM 2 each have a 324 mm radius of curvature The spherical surfaces are ground from rectangular pyrex blanks The surfaces are polished coated with aluminum and then coated with magnesium fluor...

Page 21: ...sitions Six of the eight positions allow light to enter one of the six exit slits The second mask position blocks light from all slits so that a dark count measurement can be made The eighth mask posi...

Page 22: ...six exit plane slits to the photomultiplier this mask is driven by a second microprocessor controlled stepper motor synchronizing the photon count circuitry with the movement of the slit mask turning...

Page 23: ...the Brewer software is an Ephemeris algorithm which calculates the azimuth and zenith angles of both the Sun and the Moon as seen from the current location Data required for this calculation includes...

Page 24: ...5 by 30 5 by 35 6 cm 91 4 cm with tripod 45 7 cm 18 inch without tripod Power requirements 120 V AC 60 Hz 0 5 A 240 V AC 50 Hz 0 25 A 2 3 COMPUTER EQUIPMENT The Brewer Spectrophotometer is operated by...

Page 25: ...MKIII OPERATOR S MANUAL 22...

Page 26: ...es The Brewer will first be set up and tested in close proximity to the Computer and then it will be installed at its final location Before starting ensure that correct AC voltage is availabe as per t...

Page 27: ...MKIII OPERATOR S MANUAL 24 Figure 3 2 Brewer Equipment Setup Figure 3 3 Brewer Spectrophotometer Tracker Tripod...

Page 28: ...a Gel inside the Brewer and replace the Brewer Cover 7 Turn off the Brewer Power Switch and disconnect the power cable 3 2 TRIPOD UNPACKING AND SETUP Refer to Figure 3 4 1 Open the Tripod crate and lo...

Page 29: ...MKIII OPERATOR S MANUAL 26 Figure 3 4 Brewer Spectrophotometer Tripod...

Page 30: ...6 Connect the AC Power Cable to the 120V 230V connector on the underside of the Tracker the green Power Indicator will remain off if it comes on push the Power Switch to turn the power indicator lamp...

Page 31: ...connecting the communication cables 5 Connect the remaining cables from the Tracker to appropriate connectors on the Brewer Note that each cable connector combination is unique which makes it difficu...

Page 32: ...he testing of the instrument BDATA NNN these files contain firmware and software configuration information specific to the Brewer whose Number NNN appears on the Disk identifier as well as the utility...

Page 33: ...DOS prompt at this point activity will appear on the computer screen but for this test only the lights on the Data Set need to be monitored the power indicator will remain on and in less than a minute...

Page 34: ...his point the Brewer Main Menu will appear on the Computer Screen and the Software will be ready to accept Commands as seen by the blinking cursor to the right of the prompt cm See Figure 3 5 This is...

Page 35: ...f major concern if the Brewer is not pointing accurately at this time as some other parameters may still need adjustment Note the newly entered GMT Date and Time are shown on the Computer display 3 8...

Page 36: ...crepancies or problems noted in the tests 3 10 FINAL INSTALLATION If the results of the initial tests are within acceptable tolerances then the Brewer can be moved to its final location 1 At the Brewe...

Page 37: ...When the Tracker is level mount the Brewer and interconnect all of the cables between the Computer the Tracker and the Brewer 12 In order for the Surge Suppressor circuitry to be effective the Brewer...

Page 38: ...fter the CTRL Break keys have been pressed Break in xxxxx OK will be seen there will be full access not only to all GW BASIC commands but also to the Brewer Program itself There are a number of ways t...

Page 39: ...put values can be found in Appendix A AS Azimuth Tracker to the Sun The AS command moves the Azimuth Tracker to the azimuth angle where the Ephemeris has calculated the sun to be for the current locat...

Page 40: ...ommand sequence might be B1W1CI where B1 turns on the HG lamp W1 produces a 5 minute lamp warm up delay and CI executes the wavelength scan See Appendix A for the format of the CIJJJYY NNN file The CI...

Page 41: ...ervation being taken using the direct sun as a radiation source The Brewer Zenith Prism and Azimuth Tracker are oriented toward the sun the Iris is closed FW 1 is rotated to the Ground Quartz Disk pos...

Page 42: ...ervations taken the previous day This may be achieved by using the ED command The ED routine summarises data into an S file see SUM sorts and prints data from observations and tests see OZSUM FMSUM FZ...

Page 43: ...perating points as dictated by offset values contained in the instruments constants file The FR command is invoked as part of the RE command or the operator may manually send the FR command if the pos...

Page 44: ...GSUM Mercury Lamp Summary HGSUM reads the daily Data B file and prints out the summary results of the day s HG calibrations In addition an entry is made in the HGOAVG nnn file The HGSUM command is usu...

Page 45: ...I command OZSUM Ozone Summary OZSUM reads the daily Date B file and prints out the summary results of the day s O3 observations In addition an entry is made in the OZOAVGYY nnn file The OZSUM command...

Page 46: ...he operation of the Slit Mask Motor by taking measurements in the Running and Stopped modes of the Slit Mask Motor The RS command is normally executed as part of the ED routine and the test results ar...

Page 47: ...ed to introduce Horizon and North corrections which compensate for any offsets that may occur These corrections are saved and used by the software in future pointing calculations See also Section 7 SK...

Page 48: ...s a new SJJJYY nnn file which contains only data summary information In addition Umkehr data is processed and put into a separate UJJJYY nnn file The SUM command and the various summary printout comma...

Page 49: ...wo UV scan lengths short UVB scans which cover the range from 290nm to 325nm and extended UV scans which cover the range 286 5nm to 363nm UA Timed UX scan UA performs an Extended UV scan in 0 5nm incr...

Page 50: ...ted for each measurement and data is appended to the UVOAVG nnn file See also Appendix A UX Extended UV Wavelength Scan UX causes the irradiance over the 286 5nm to 363nm range to be measured in 0 5nm...

Page 51: ...r 2 0 14 seconds on each wavelength Intensity data for six wavelengths and the dark count from the seven measurements is recorded The Azimuth and Zenith positions are updated after each measurement Af...

Page 52: ...ily Weekly and Infrequent are used for frequency of tasks but local conditions may dictate different intervals 5 1 DAILY TASKS Daily tasks are divided into Outside Tasks and Inside Tasks i e those per...

Page 53: ...10 Moisture Index 2 used to indicate if the desiccant needs changing change the desiccant if index values are consistently greater then 10 11 CUT Header C U T reminder that time is Co ordinated Univer...

Page 54: ...nd there is a Status Box which shows some important status information including the latest DUV measurement the running average O3 values the latest SL R6 value the latest HG measurement time and temp...

Page 55: ...tive action 4 DT TEST The two summary values should be within a few 5 nanoseconds of the values given in the Final Test Record If larger deviations are found then confirm them to be repeatable before...

Page 56: ...iccant systems in the Brewer the desiccant cartridge breather and the loose or bagged desiccant The desiccant cartrige is intended to remove moisture from the air drawn into the Brewer as temperature...

Page 57: ...od 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 ge...

Page 58: ...d normally not be changed without further investigation but the mechanism may be cleaned with a lint free cloth The micrometers should normally not require lubrication and the only lubricant KIPP ZONE...

Page 59: ...e 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 Prior to removing the battery the power sh...

Page 60: ...be tested Note the three digit serial number Vertical repeatability is achieved by positioning the lamp filament on exactly the same axis as that defined by the two sight holes on each side of the la...

Page 61: ...e pdqlhphg and press Enter pd turns on the printer ql initiates a Quick Lamp Scan of the UV lamp hp aligns the gratings hg does a mercury line wavelength calibration 4 When prompted to do so enter the...

Page 62: ...reading should be noted and not used again 2 Once every two months all five lamps should be scanned to make sure they all give the same results so availability of spares is assured 3 In the event that...

Page 63: ...MKIII OPERATOR S MANUAL 60...

Page 64: ...e the command sequence PDSRSI PD turns on the printer SR zeros and resets the Tracker SI puts the software into the Siting Mode the default mode enables the controls on the Brewer 2 Being careful not...

Page 65: ...on another If it is found that the North Correction numbers alternate between higher and lower numbers consistently from morning to afternoon then this is an indication that the levelling is not accu...

Page 66: ...mes follow DOS rules and automatically are given the SKD extension An ED is invoked automatically at solar midnight by the SKC routine so an additional ED need not be programmed into the schedule Sche...

Page 67: ...From the Brewer main menu send the Command SE a table will appear on the screen with two columns one for SZA and one for the commands to be executed at the SZA starting with the first SZA after solar...

Page 68: ...skatoon location name 52 108 latitude 106 713 Longitude 3 45 temperature in volts Pr Pressure header 1000 Mean Pressure Temperature in volts TE Read from the PMT thermistor The temperature in C is cal...

Page 69: ...rement 2 A Filter 3 0 ND filter position of filterwheel 2 in steps 4 737 41 time minutes since 00 00 hrs 5 0 Lower slit mask position 1 dark 6 6 Upper slit mask position 6 slit 5 7 20 of cycles 8 6253...

Page 70: ...tion of single ratio 3 22 4 standard deviation of single ratio 4 23 13 standard deviation of double ratio 1 24 8 standard deviation of double ratio 2 25 387 standard deviation of counts wavelength 1 2...

Page 71: ...ev Single ratio 2 21 16 st d dev Single ratio 3 22 5 st d dev Single ratio 4 23 56 st d dev Double ratio 1 24 11 st d dev Double ratio 2 25 4 SO2 st d dev 26 6 O3 st d dev Zenith Sky Data Example Name...

Page 72: ...d dev Single ratio 3 22 5 st d dev Single ratio 4 23 51 st d dev Double ratio 1 24 21 st d dev double ratio 2 25 3 2 SO2 st d dev 26 2 1 O3 st d dev Umkehr Data Umkehr data taken alternately at 5 sho...

Page 73: ...line feed the end of the summary file is marked with ef UV Files UVJJJYY nnn UV files contain data data from UV scans Including UV UX and UA Example Name 1 UX integration time is 0 2294 seconds per c...

Page 74: ...d PTFE diffuser 7 dh data header 8 15 Day 9 01 Month 10 99 Year 11 Saskatoon Location 12 52 108 Latitude 13 106 713 Longitude 14 3 43 PMT temperature Volts 15 pr Pressure header 16 960 Dark Pressure m...

Page 75: ...voltage V 1487 05 1487 05 4 12V power supply V 11 91 11 91 5 5V power supply V 4 97 4 97 6 12V power supply V 11 99 11 99 7 24V power supply V 24 48 24 48 8 Rate meter V 0 00 0 00 9 Below Spectro temp...

Page 76: ...077476 Disp Coeff 3 0 725E 6 0 739E 6 0 734E 6 0 751E 6 0 707E 6 0 726E 6 ETC Values O3 1690 SO2 215 O3 Absn Coeffs O3 0 3446 SO2 1 1533 SO2 Absn Coeffs O3 0 SO2 2 3500 Micrometer steps deg 0 00 WL ca...

Page 77: ...power supply stability 1 2 3 4 08591 1566 80 5 17 1 61 08691 1555 86 5 17 1 61 1 Julian Day dddyy 2 H T voltage 3 5V 4 standard lamp current DTOAVG nnn Dead Time Log 1 2 3 04991 41 66 43 375 05991 41...

Page 78: ...83 34 22 1 Julian Day jjjyy 2 maximum lamp intensity of the days scans 3 high Brewer temperature of the days scans 4 number of scans MIOAVG nnn Micrometer Log A new entry is generated each time the FR...

Page 79: ...ily average ozone measurements collected by the Brewer 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 08398 452 1 2 4 0 6 0 6 16 29 185 20 445 2 5 2 12 3 26 4 19 22 199 19 08498 472 8 2 1 08 1 2 22 35 185 19 465...

Page 80: ...89 9994 1 0001 9992 9998 9996 1 dddyy 2 9 run stop ratio for slit mask positions 0 through 7 SCOAVG nnn Sun Scan Average File 1 2 3 4 5 6 7 8 9 07590 22 1 971933 1 133 6 440 1 131 7 3 135 07991 21 1 8...

Page 81: ...the first and last scan in the UV data file 4 the number of scans in the UV file 5 representative hour 6 UVRJJJYY file in use UVBJJJYY nnn produced from UV scans by AB_UVDAT EXE First row decimal hour...

Page 82: ...I 7 54 Corrected intensities at 24 wavelengths for MKIII and MKIV 55 Time scan finished for MKIII and MKIV LAMPLLL IRX Lamp Irradiance File Lamp Irradiance files generated at the factory tabulate the...

Page 83: ...MKIII OPERATOR S MANUAL 80...

Page 84: ...0 17 5000 Neutral density of filter 1 18 10000 Neutral density of filter 2 19 15000 Neutral density of filter 3 20 20000 Neutral density of filter 4 21 25000 Neutral density of filter 5 22 2972 Zenith...

Page 85: ...nt 11 52 108 L1 Latitude of instrument 12 106 713 L2 Longitude of instrument 13 960 L3 Average climatic station pressure millibars 14 1 8 TE Voltage representation of Brewer temperature 15 215 NC Azim...

Page 86: ...8 0774763 slope for mercury exit slit 19 7 259538E 07 quadratic for mercury exit slit 20 36 Not used UMKSETUP nnn Umkehr setup file Example 1 SXUNI4M DAT 2 STDTABS DAT 3 O3TABLE DAT 4 CQMS DAT 5 4 109...

Page 87: ...eous DS and ZS measurements over a wide range of mu and ozone values usually many months The values supplied in ZSFVAL nnn are for a Brewer 035 operating in Toronto Canada and will produce results whi...

Page 88: ...y C BDATA NNN To use RESIII EXE it should reside in a directory containing the XL scans and the Lamp irradiance files 1 The program is launched by typing RESIII 2 At the prompt the instrument number i...

Page 89: ...except that integrated results are tabulated along with data from the individual wavelengths AB_UVDAT UVSUM RTN and UV RTN have a UVA correction built into the weighting curves Calculated results repr...

Page 90: ...into the test directory 5 Run AB_UVDAT follow the directions given UV and UX Data Analysis Programs RD_UX EXE is used to reduce the UV data produced by the UA UC UF UV and UX routines The input file...

Page 91: ...MKIII OPERATOR S MANUAL 88...

Page 92: ...ation a number of operations can be done Schedules can be written using SE and the solar angle information can be printed using SA Dates and time can be changed as can Site Information and Brewer numb...

Page 93: ...MKIII OPERATOR S MANUAL 90...

Page 94: ...KIPP ZONEN poduct nor does KIPP ZONEN claim to have expertise in the area of Umkehr processing We will however endevour to provide whatever information we can to assist users in the generation of ozo...

Page 95: ...a which is created by using a text editor to modify a sample file such that it contains the ozoavg file to be used the station number station code latitude longitude UMKSETUP nnn a file created during...

Page 96: ...one 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 Ozon...

Page 97: ...MKIII OPERATOR S MANUAL 94...

Page 98: ...summarizes the settings of the Brewer s controllable elements for each of the setup tests The software will automatically set the elements to where they should be for a specific test All of the follo...

Page 99: ...1737937 32 93596 Dark Count versus Slitmask Delay should be plotted and compared to the plot shown in the Final Test Record The optimum slitmask delay time is that which minimizes the dark count typi...

Page 100: ...N FW 1 is put to Position 1 FW 2 to Position 0 the Iris is opened and the zenith prism turned to the lamp housing 5 Following a 5 minute lamp warmup the test runs and data is written to the DJJJYY nnn...

Page 101: ...voltage WARNING Changing the high voltage for the photomuliplier may effect the ozon calibration but will change the UV calibration for sure The best time for adjusting the high voltage is therefore d...

Page 102: ...027 1313654 3063356 RUN STOP 1 0017 0 9818 0 9997 0 9994 0 9998 0 9990 1 0000 0 9999 RATIOS RUN 0 036 0 0319 0 0586 0 99 0 2808 0 1657 RATIOS STOP 0 0346 0 0306 0 0564 0 1005 0 2872 0 1682 The test is...

Page 103: ...n estimate for deadtime 7 3 5 3 log 1 F F F F F e 3 Revise the estimates for the true count rates 3 3 3 F e F F 5 5 5 F e F F 4 Iterate steps 2 and 3 until the value for T1 converges Deadtime measurem...

Page 104: ...meter so that the diffraction grating disperses the five operating wavelengths onto the appropriate exit slits The test uses the mercury discharge lamp and the Hg calibration slit slitmask position 0...

Page 105: ...hing correlation coefficient of 0 987 was obtained for an interpolated mercury calibration point of 298 47 The operational setting of the micrometer is arrived at by subtracting the offset retrieved f...

Page 106: ...emperature dependence then prints a series of summary statistics 20 56 22 Feb 21 85 65 763 2 395 27 C DEG SL 0 Mean1 mean5 MS 4 MS 5 MS 6 MS 7 MS 8 MS 9 1102170 821302 623 426 488 694 596 418 483 445...

Page 107: ...of the instrument is compensated Compare the TC i coefficients with those listed in the Final Test Manual If the freshly determined values do not agree with those obtained at the factory you should co...

Page 108: ...6 130 338 4 3 2 132 341 3 2 7 134 345 3 1 7 136 346 4 2 0 138 348 0 2 3 140 344 8 3 5 142 347 1 3 9 144 344 4 5 7 146 342 6 6 9 148 338 9 9 2 The proper operational setting is that step number for wh...

Page 109: ...ment to be calibrated and a reference instrument Measurements should be taken over a wide range of airmass values 1 0 mu 3 0 for at least one full day of good observing conditions The O3 and SO2 value...

Page 110: ...0 in azimuth This test establishes the steps per revolution constant which is used by the Brewer program to orient the Brewer in azimuth to within 1 minute of arc An opto sensor located inside the Azi...

Page 111: ...d accurate RH values NaCl solution is 75 3 the measured RH using the above formulas is 75 7 MgCl2 solution is 32 8 the measured RH using the above formulas is 32 6 LiCl solution is 11 3 the measured R...

Page 112: ...transmitting appropriate command strings for example R 1 6 20 run the slitmask motor through positions 1 to 6 then back to position 1 accumulating the counts to six separate channels repeat this sequ...

Page 113: ...part of the temperature coefficient TCi are the wavelength dependent temperature coefficients read from the spectrophotometer s Constants File stored on disk TE is the instrument temperature in degre...

Page 114: ...S 6 MS 7 will be largely independent of SO2 effects Two higher order ratios are formed 7 4 8 2 3 MS MS MS 7 6 5 9 7 1 5 0 MS MS MS MS Both of these functions have weightings which remove the effects o...

Page 115: ...ozone and the solar zenith angle The relation assumed has the following form sky F C X B X A 2 where 2 2 2 M c M b a A 2 2 2 M f M e d B 2 2 2 M k M h g C M2 is the path lengthening factor for the O3...

Page 116: ...en the first command in the set has ended even if other commands in the set are still executing Any commands which generate output transmit that output in accordance to the rules of the low level prot...

Page 117: ...f each output message 3 HVADJUST Adjusts the High Voltage power supply This command requires configuration variables Syntax HVADJUST delta Parameters Parameter response Format Meaning delta 128 to 127...

Page 118: ...itialized 5 LOGENTRY Report the next entry in the log Syntax LOGENTRY Response A character string identifying a problem This string has the form YYYY DDD HH MM SS text where the text may be for exampl...

Page 119: ...the I command for possible values The s defines the motion required If s is positive the motor moves to the given position If s is negative the motor moves s steps backward and resets the zero positi...

Page 120: ...asures the light intensity for each of the wavelength positions p1 thru p2 by running the slitmask from p1 to p2 and back accumulating the counts for each separate position This counts are accumulated...

Page 121: ...the most recent run command This command requires configuration variables Syntax S Response p1 p2 count p3 0 interrupted Each number returned in the above string is in the form of a decimal value usi...

Page 122: ...ker exactly one revolution and records the number of steps required STEPS 17979 Reports that the most recent STEPS command discovered 17979 steps in a revolution 15 T Retransmit the output from the mo...

Page 123: ...t 9600 baud and character echoing will be suppressed 18 CONFIGURATION PARAMETERS A variety of configuration parameters define the operation of the Brewer Commands exist to set and read each of these T...

Page 124: ...mitted MOTOR MAX JERK motorId Unsigned integer paces 256 tick 3 on reset maximum absolute value of rate of change of motor acceleration to be permitted inside a time slice MOTOR MAX SEARCH motorId Sig...

Page 125: ...debounce time for the tracker control switches USE B3 FOR LAMPS Boolean immediate Sets response to command B 3 If set to YES lamps are turned on else the command is ignored VERSION ELEC unsigned byte...

Page 126: ...a warm restart of the Brewer BYTE X address ANSI C integer format Hex on output yes value of the relevant byte in external RAM BYTE F address ANSI C integer format Hex on output no reads value from Fl...

Page 127: ...number of steps in a complete revolution of the azimuth tracker SUPPLY VOLTAGE HIG H powerSupply volts yes supply voltage high watermark SUPPLY VOLTAGE LOW powerSupply volts yes supply voltage low wa...

Page 128: ...256 192 2 blocked aperture opaque M 4 192 128 3 clear aperture transparent M 4 128 64 4 quartz diffuser ND of f 2 0 translucent M 4 64 0 5 clear aperture transparent M 4 0 5 Filterwheel 2 0 0 f 0 M 5...

Page 129: ...MKIII OPERATOR S MANUAL 126...

Page 130: ...kippzonen com of the circumstances in which this message was generated name Symbol not found Please notify KIPP ZONEN info holland kippzonen com of the circumstances in which this message was generate...

Page 131: ...e SAVE command only four times Reload the firmware Lamp number told neither ON OFF what Only ON and OFF are valid settings for a lamp MAIN C motor initialization timed out Motor initialization failed...

Page 132: ...e notify KIPP ZONEN info holland kippzonen com of the circumstances in which this message was generated Motor number time allotted ss seconds for motor movement has expired Motor stopped The value ss...

Page 133: ...zation started e g just before power down This is only guaranteed to be valid on Warm resets although it is normally valid for Tepid resets as well restartTime The first time read from the clock after...

Page 134: ...does not work on MS DOS W95 or W89 systems To run the BrewCMD W utility the Brewer must be connected via the serial port of the PC The BrewCMD utility is intended for the use of the scientist using th...

Page 135: ...MKIII OPERATOR S MANUAL 132...

Page 136: ...reserva Passion for Precision Go to www kippzonen com for your local distributor or contact your local sales office HEAD OFFICE Kipp Zonen B V Delftechpark 36 2628 XH Delft P O Box 507 2600 AM Delft T...

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