ScienTECH Vector D200C, Setup And Operating Procedures

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Page 2: ...Series Laser Power Energy Meters Setup and Operating Procedures Indicator Model No _____________ Serial No _____________ P N9467J 5205 ...

Page 3: ...ts Calorimeter 2 Model No Serial No Calibration Wavelength nm Output Sensitivity S V W Time Constant 1 e sec Calibration Temp C Sub Heater Resistance Rc ohms Sub Heater Voltage Vh volts Sub Heater Wattage Wh watts Pyroelectric Detector 1 Model No Serial No Calibration Wavelength nm Output Sensitivity V J Calibration Temp C Pyroelectric Detector 2 Model No Serial No Calibration Wavelength nm Output...

Page 4: ...Model PHF02 PHF05 and PHF09 9 CALIBRATION 10 ATTENUATION FACTORS 10 TRANSFER CALIBRATION 10 ENERGY MODE 11 POWER MODE 12 VOLTS MODE 12 FUNCTION MENU CYCLES 12 STATISTICS MODE 13 ANALOG TUNE BAR 13 DISPLAY BACKLIGHTING 13 ANALOG OUTPUT 14 JOULEMETER SENSOR OPERATION WITH OSCILLOSCOPE 14 CALIBRATION USING ELECTRIC SUBSTITUTION HEATING 15 OPERATION OF ASTRAL CALORIMETERS WITH A DIGITAL VOLT METER 15 ...

Page 5: ...5 GW cm Not e6 Not e7 Si ngl ePul s eEner gy m ax 30 J Ener gy Dens i t y m ax Not e8 Not e9 Not e10 Not e11 Not e12 Not e13 Not e14 Pr eci s i on 1 Accur acy 3 Res pons eTi m e 3 s ec i fat t ached t o aSci ent ech i ndi cat oroper at i ng i n wat t sm ode Di m ens i onsDxL i n 4 75 x 2 3 4 75 x 2 3 4 75 x 3 92 4 75 x 2 3 4 75 x 3 92 4 75 x 2 3 4 75 x 2 3 cm 12 07 x 5 8 12 07 x 5 8 12 07 x 9 96 1...

Page 6: ... x2 3L 2 4di a x2 3L 2 4di a x3 9L2 4D x3 9L 2 3x2 3x0 6 2 3x2 3x0 6 2 3x2 3x0 6 cm 6 1di a x5 8L 6 1di a x5 8L 6 1di a x5 8L 6 1di a x9 9L6 1D x9 9L 5 8x5 8x1 4 5 8x5 8x1 4 5 8x5 8x1 4 W ei ght l bs 0 9 0 9 0 9 1 1 1 1 0 3 0 3 0 3 kgs 0 41 0 41 0 41 0 5 0 5 0 14 0 14 0 14 I ndi cator C om pati bi l i ty H 310 H 310D H 410 H 410D S310 S310D D 200PC D 200P M odel P 50 PH F 50 PH D 50 PH D X 50 PH D...

Page 7: ...f the input power back out of the aperture Please refer to figure above to determine the reflectance for the wavelength you are measuring These detectors should be treated as a partial mirror or any other type of reflective optic and the appropriate caution level observed especially in the CO2 wavelength CE Mark Certification All of the detectors listed in this manual have been certified for the e...

Page 8: ...e cord between the power entry module and a grounded AC outlet Defeating the ground plug on the line cord will adversely effect the performance of the indicator MODELS S200 and D200P BNC interconnect cables are included with the pyroelectric sensors Connect the cable between the pyroelectric sensor and the input and the input connector of the indicator With the dual channel ratiometer Model D200P ...

Page 9: ...nnel A should be configured per the previous instructions for the S200 and D200P set up The interconnect cable for the calorimeter terminates with mini DIN connectors The D shaped connector shows the orientation for hook up MODEL D200C Both channels of the D200C are dedicated for use with any Astral calorimeters Any model can be connected to either channel 5 ...

Page 10: ...reach a boundary the indicator will automatically switch to the next higher or lower range as appropriate In a manual range OF will appear in the display if the input laser power or energy level exceeds the range capability MODE MODE MODELS S200 D200P Pressing the MODE button begins a cycle between MODE and CAL Pressing the SELECT button when MODE appears in the display begins a cycle of VOLTS ENE...

Page 11: ...figuration Pressing SELECT when TRIG A TRIG B appears allows selection of the trigger channel FUNCTION Model D200PC Pressing the FUNCTION button when in channel A is identical to the D200P Pressing the FUNCTION button when in channel B begins the menu cycle of STATS TUNE BAR E REMOTE Press SELECT when the desired function appears to activate it FUNCTION Model D200C Same as channel of D200PC SELECT...

Page 12: ... RELATIVE SPECTRAL RESPONSE 20 30 40 50 60 70 80 90 100 0 1 1 10 100 WAVELENGTH microns PERCENT ABSORPTION P and SP HR P PHD PHDX and SPHD HR PHF PHF and SPHF HDX Limited to 0 4 to 2 0 microns X PHDXUV Figure 1 Before using you Vector joulemeter system please review the energy density ratings given in the chart on page 2 which apply to all models of Vector pyroelectric joulemeter sensors Familiari...

Page 13: ...of the PHF02 PHF05 and PHF09 detectors selects one of three electrical time constants and should be set as follows S Short Pulses Select for pulse durations of 5 µsec or less Repetition rates up to 4 kHZ can be measured I Intermediate Pulses Select for pulse durations of 50 µsec or less Repetition rates of up to 400 HZ can be measured L Long Pulses Select for pulse durations of 250 µsec or less Re...

Page 14: ...ar in the display Use the COUNT UP COUNT DOWN buttons to enter into the display the time constant value listed on the calorimeter ID tag Press the SELECT button to enter the new value PRESS THE SAVE BUTTON TO SAVE THE CALIBRATION IN THE EPROM MEMORY Attenuation factors Entering Attenuation Factors Models S200 D200P D200PC When attenuators are used in conjunction with the joulemeter sensors the att...

Page 15: ...ppears in the display The energy level of each pulse will now be displayed on the front panel LCD display up to 40 HZ The RS232 can transmit data at repetition rates up to 80 HZ IEEE488 up to 100 HZ and STATS mode can collect data at repetition rates up to 200 HZ Energy Mode Model D200PC Energy mode in channel A dedicated to pyroelectric sensors is the same as above Energy mode in channel B calori...

Page 16: ... mode except press the SELECT button when the VOLTS annunciator appears Function Menu Cycles Pressing the FUNCTION button begins menu cycles which allows the selection of channel A channel B or ratios dual channel models statistics mode tune bar log units ratio mode display in scientific notation and digital output configuration The menu cycles are as follows Model S200 STATS TUNE BAR E REMOTE Pre...

Page 17: ...on of statistics mode Use the FUNCTION button to begin the menu cycles as explained in the Function Menu Cycles section Press the SELECT button when the STATS annunciator appears to activate the statistics mode Use the COUNT UP COUNT DOWN buttons to change the display to the desired number pulses up to 1000 Press the SELECT button to enter the pulse population to memory Press the FUNCTION button t...

Page 18: ...alorimeter Channels In power mode the analog output is calibrated to 10 volts full scale and is accessible via the 50 ohm terminated BNC connector labeled Analog Output In energy mode the analog output is an amplified voltage signal representative of the voltage generated by the calorimeter thermopile To calculate energy using the analog output follow the equation 1 10 30 range J Vpk TC 10 10 1 3 ...

Page 19: ... monitor the power supply 6 Set up the indicator in Watts Mode and 10 range for 25mm calorimeters or 3 range for 50mm calorimeters 7 Apply Vh volts in the stated calibration data to the substitution heater 8 Adjust the calibration trim pot R4 on the calorimeter board until Wh Watts from the calibration data is displayed on the indicator Operation of Astral Calorimeters with a Digital Volt Meter As...

Page 20: ...ecorder appears as in Figure 4 The output voltage from a chart recorder can be converted to wattage at any time by W V S Wi Vi S V Chart recorder voltage level in mV S Calorimeter sensitivity in mV W The total energy E in the pulse can be found by integrating the instantaneous wattage over time E W t dt 0 The following methods may be used to compute the total integrated energy 16 ...

Page 21: ...t the thermal decay envelope on to the voltage axis determine the 1 e decay time constant T and estimate the total energy value E E Vo S x T The change from thermal absorption to thermal transport phenomena near the peak causes difficulty in accurately projecting the envelope on to the voltage axis introducing an error dVo Further the determination of the time constant T introduces another error d...

Page 22: ... pigment layer on the thermopile directly heating the thermopile Lateral diffusion of heat across the thermopile is quite effective so that the hot side of the thermopile does not have gross hot spots The structure of the thermoelectric junctions is such that each shares the heat flow in parallel and sums the thermoelectric potential in series Thus the response is linear with the total heat flow a...

Page 23: ...a repetitively pulsed laser is supplying a steady power input the situation is even more complicated Superimposed upon the average linear temperature drop is the pulse by pulse instantaneous temperature rise If we ask how these various parameters of the laser input can vary we obtain a family of curves for the same glass absorber See Figures 5 and 6 For ACX2501 multiply the Power Density and the E...

Page 24: ...Figure 7 20 ...

Page 25: ...n the name of the desired interface is present If you chose the RS232 interface you may then go ahead and select RS232 setup options or press cancel to return to the idle menu state If you chose the IEEE interface you have the option of entering the desired IEEE bus address or pressing CANCEL to return to the menu idle state If you have an S200 single channel pyro or an AD30 single channel calorim...

Page 26: ...2 followed by a power cycle or the commands rcl 0 or rst RS232 INTERFACE The RS 232 connector is a 9 pin D subminiature connector located on the instrument rear panel The pinout and pin descriptions are shown below 1 UNUSED 2 DATA IN RXD 3 DATA OUT TXD 4 DTR IS GENERATED 5 GROUND 6 DSR IS IGNORED 7 RTS IS MARKING 8 CTS IS EVALUATED IF REQUESTED 9 UNUSED This interface does not strictly adhere to t...

Page 27: ...ting of the sequence onoF for XON XOFF CTS nOnE Press SELECT when the desired handshake option is shown RS232 REMOTE CONFIGURATION The RS232 interface can be configured remotely from either an RS232 remote terminal or from an IEEE488 remote controller This configuration is done by entering one or more of the commands from the remote command language Those commands which affect RS232 configuration ...

Page 28: ...sten if addressed to talk SR1 Service Request Capability RL1 IEEE488 2 Remote Local Capability PP0 No parallel poll capability DC1 Device clear capability DT0 No device trigger capability 2 IEEE Address Out of Range The instrument address is set from the front panel and the instrument firmware accepts addresses only within the range 0 30 3 Effective time of user address change This is described un...

Page 29: ...avoid the use of the RPT query by issuing a series of SND queries The IO command may alter the saved value for active remote interface making it possible for the RS232 interface to take over the instrument the next time a power up happens or the RCL or RST commands are executed 11 There are no block data responses 12 A list of common commands and queries implemented is included in the section REMO...

Page 30: ... done from the front panel through a series of menu choices followed by the entry of the numeric address a number between 0 and 30 The sequence of menu choices depends upon the type of instrument and is described below Step 1 Obtaining the IEEE address setup screen Proceed as described in FRONT PANEL REMOTE INTERFACE SELECTION until you have selected the IEEE488 interface The carry out step 2 belo...

Page 31: ...irst followed by those used only for the D200 then those used only by the AD30 and finally by those commands used only in the IEEE488 interface In the descriptions that follow the command will be presented first followed optionally by one or more arguments separated by commas When the vertical bar is used it denotes the word or and signifies that one of the items separated by bars may be inserted ...

Page 32: ...have been collected from the front panel or by the COL or COL commands this command returns the mean of the collection If no statistics have been collected it returns zero MAX If statistics have been collected from the front panel or by the COL or COL commands this command returns the maximum value of the collection If no statistics have been collected it returns zero SIGMA If statistics have been...

Page 33: ...re continuing to process commands CLR This command halts RPT SND or COL commands in progress It also terminates statistics gathering started by the COL command This command is automatically issued whenever a carriage return that is not preceded by a command is typed into the RS232 interface When the IEEE488 interface receives a linefeed terminated message with no commands the CLR command is execut...

Page 34: ...mit readings such as RPT SND or COL The SEL command has the further effect of specifying to indicator to which channel it should apply the CAL CAL ATTEN ATTEN RANGE and RANGE commands If the most recent SEL command involved both channels then the six commands above become invalid until the user issues a SEL A or SEL B command SEL This query returns A B A B B A or AB to indicate which channels will...

Page 35: ...31 ...

Page 36: ...ter to the binary representation of the decimal integer supplied SRE Returns a decimal number which represents the contents of the Service Request Enable Register OPC Sets the Operation Complete event bit in the Standard Event Status Enable Register when pending device operations have been completed STB Returns a decimal number which is the value of the IEEE488 1 status byte and the Master Summary...

Page 37: ...e 9600 Baud RS232 Handshake Method NONE RS232 Parity NONE Range 1 Autorange OFF Mode of Operation ENERGY MODE Pulses per average for average energy mode 10 Backlight Switch OFF Tune Bar Display OFF Floating Point Display Mode Normal vs Scientific NORMAL Volts Joule 1 0 Attenuation Factor 1 0 Active Remote Interface RS232 IEEE Bus Address if installed 4 AD30 DEFAULT POWERUP SETTINGS The first time ...

Page 38: ...Operation POWER MODE Backlight Switch OFF Tune Bar Display OFF Floating Point Display Mode Normal vs Scientific NORMAL Time Constant 8 0 seconds Active Remote Interface RS232 IEEE Bus Address if installed 4 34 ...

Page 39: ...DSHAKE EVEN ODD NONE MODE BUTTON CAL V J V mJ ATTEN AVG POWER Transfer cal in avg power mode RANGE BUTTON 1MΩ 50Ω STATS TUNE BAR E Scientific Notation REMOTE BUS ADDRESS XON CTS NONE 300 600 1200 2400 4800 9600 MODE VOLTS ENERGY AVG ENERGY AVG POWER 2m 20m 200m 2 20 AUTO 2µ 20µ 200µ 2m 20m AUTO ...

Page 40: ... 1MΩ 50Ω BUS ADDRESS XON CTS NONE 300 600 1200 2400 4800 9600 MODE VOLTS ENERGY AVG ENERGY AVG POWER 2m 20m 200m 2 20 AUTO 2µ 20µ 200µ 2m 20m AUTO CH AB RATIO MODE BUTTON STATS TUNE BAR LOG E REMOTE CH A CH B RATIO A B RATIO B A FUNCTION BUTTON STATS TUNE BAR LOG E Scientific Notation REMOTE TRIG A TRIG B TRIG A TRIG B RS232 IEEE488 36 ...

Page 41: ...4800 9600 MODE VOLTS ENERGY AVG ENERGY AVG POWER 2m 20m 200m 2 20 AUTO 2µ 20µ 200µ 2m 20m AUTO CH AB RATIO CHANNEL A CHANNEL B MODE BUTTON POWER ENERGY MODE CAL RANGE BUTTON Channel B 10m 100m 1 10 AUTO 25mm Calorimeter 50mm Calorimeter STATS TUNE BAR LOG E REMOTE CH A CH B RATIO A B RATIO B A FUNCTION BUTTON STATS TUNE BAR LOG E Scientific Notation REMOTE 300m 3 30 AUTO Watts Only RS232 IEEE488 3...

Page 42: ...00 600 1200 2400 4800 9600 ENERGY CH AB RATIO MODE BUTTON RANGE BUTTON 10m 100m 1 10 AUTO 25mm Calorimeter 50mm Calorimeter STATS TUNE BAR LOG E REMOTE CH A CH B RATIO A B RATIO B A FUNCTION BUTTON STATS TUNE BAR LOG E Scientific Notation REMOTE 300m 3 30 AUTO Watts Only RS232 IEEE488 MODE CAL 38 ...

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