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Gentec-EO SDX-1239, Operating Instructions Manual, Page: 16 / 22

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SDX-1239 Operating Instructions  
Rev - 3/21/2017 

Page 16 of 22 

FAC 

Requests wavelength correction factor. Query only, returns the 
correction being applied by Mach 5/6 for the user selected 
wavelength. 1.00 if the wavelength is the calibration wavelength or of 
wavelength correction is off. 
 
Example.  
 
Send: facCRLF 
Reply: 1.000CRLF 

RST 

Reset the secondary processor to force a probe eeprom read. Returns 
the MSP firmware version after the rest is complete. 
 
Example.  
 
Send: rstCRLF 
Reply: 1.00.00CRLF 

SMD 

Sets the mode of operation. 
 
0 is Measure mode 
1 is Monitor Mode 
2 is Control Mode 
 
Example. 
 
Send SMD2CRLF 
Reply: OK 
 
Send SMD 
Reply 2CRLF 
 
The SMD command side effects the AOM update rate. Setting the 
Mode to Measure will set the AOM update rate to 10Hz. Setting it to 
Monitor or Control will set it to 1kHz.The Update rate can then be set 
to any desired value with the UPD command 

AOM 

Sets the AOM control voltage in Measure and Monitor Modes. 
 
Example. 
 
Send AOM0.55CRLF 
Reply: OK 
 
Send AOM 
Reply 0.55CRLF 

UPD 

Sets the AOM control voltage update rate in Hz. The range is 10Hz to 
10kHz. 
 

Summary of Contents for SDX-1239

Page 1: ...SDX 1239 Operating Instructions Rev 3 21 2017 Page 1 of 22 SDX 1239 Energy Meter Operating Instructions ...

Page 2: ...ower Source 7 Probe Connection 7 Indicator LED s 8 USB 8 AOM Voltage 8 Energy Voltage 8 ARM Control 8 Turning the Unit On 9 Power on Tests 9 SDX 1239 Function 9 SDX 1239 Pulse Width Correction 11 SDX 1239 AOM Control in Control Mode 11 SDX 1239 Commands 12 Reading SDX 1239 Data 18 Reading SDX 1239 Pulse Memory 20 ...

Page 3: ...1239 Operating Instructions Rev 3 21 2017 Page 3 of 22 Introduction Figure 1 shows the SDX 1239 front panel Figure 2 shows the SDX 1239 back panel Figure 1 SDX 1239 Front Panel Figure 2 SDX 1239 Back Panel ...

Page 4: ...How to Disable Driver Signature Verification on 64 Bit Windows 8 1 or 10 To disable driver signature verification we re going to need to get into the Troubleshooting options from the boot manager Simply select Restart from the power options menu on Windows 8 that s under Charms or on the login screen and in Windows 10 it s on the Start Menu Hold down the SHIFT key while you click Restart Again you...

Page 5: ...SDX 1239 Operating Instructions Rev 3 21 2017 Page 5 of 22 Then select Advanced options Then Startup Settings ...

Page 6: ... boot time configuration settings you will need to restart your Computer one last time Finally you will be given a list of startup settings that you can change The one we are looking for is Disable driver signature enforcement To choose the setting you will need to press the F7 key ...

Page 7: ...ey supply at least 1A and the plug is 5 5mm outer diameter 2 1 mm inner diameter and 11mm in length with the center being positive Plug the supply into the DC power jack located on the front panel Probe Connection The SDX 1239 probes use a 7 pin locking connector Plug in the probe by lining up the red reference dots and pushing the connector until it latches into its locked position To remove the ...

Page 8: ...0 The host P C must have the Mach 6 USB drivers installed These drivers are on Gentec eo website The USB cable can be unplugged from the SDX 1239 during operation at any time but the applications software will not function in this state other than to wait for a SDX 1239 to be connected to the USB AOM Voltage The AOM Voltage Output provides a buffered signal from the SDX 1239 The range is 0V to 1V ...

Page 9: ... Power LED will illuminate The remaining LEDS will turn on briefly as the SDX 1239 performs internal self tests then they will turn off The SDX 1239 is now ready to use Power on Tests When powered on the SDX 1239 tests its internal memory and its control circuitry to ensure it can accurately measure data If the internal memory fails its test the SDX 1239 will flash the Over Temp LED If the control...

Page 10: ...rol voltage on BNC2 will be held unchanged g The SDX 1239 will measure for a minimum of 2 hours at pulse repetition rates up to 90kHz h Every 100ms the SDX 1239 will send statistics as defined in the spec to the PC software and the statistics will restart a new batch 3 Control Mode a The AOM control voltage on BNC2 will be set by the SDX 1239 based on the error of the measured mean energy and the ...

Page 11: ... will always reset to the default values SDX 1239 AOM Control in Control Mode If the SDX 1239 is in control mode it must adjust the AOM voltage so that the mean error stays as close to 0 as possible Changing the AOM Voltage to a new voltage will let more or less radiation through the AOM The SDX 1239 uses a simple proportional control Max AOM Voltage is 1V which allows 100 transmission of light Mi...

Page 12: ...eries reply with the item that was queried or Err if the query could not be executed With the exceptions noted below the host software should wait for an instrument reply before executing a subsequent command or query Commands queries are case insensitive VER Queries the Firmware Version Arguments used are 0 for the Blackfin version 1 for the MSP version Example Send verCRLF Reply 1 00 00CRLF IDN ...

Page 13: ...example suppose there are 2 million pulses in the memory The user can ask for this data in batches of 500 000 pulses at a time in 4 batches Read 1 pulse offset 1 number of pulses to retrieve 500 000 Read 2 pulse offset 500 001 number of pulses to retrieve 500 000 Read 3 pulse offset 1 000 001 number of pulses to retrieve 500 000 Read 4 pulse offset 1 500 001 number of pulses to retrieve 500 000 CL...

Page 14: ...til the hold off expires This is useful for bursts of pulses at a given rep rate Supposed there are bursts of 5 pulses occurring every 10us and the bursts themselves occur every 200us Setting to hold off to 50us will cause only the first pulse in the 5 pulse burst to be measured Setting the trigger hold off to zero disables trigger hold off Example Send hld233CRLF Reply OKCRLF Send hldCRLF Reply 2...

Page 15: ...available range In either case it will return the current set of ranges in use as well as the range in use WCM Sets the wavelength compensation on off Argument is 0 for off 1 for on Example Send wcm1CRLF Reply min range max range current rangeCRLF Send wcmCRLF Reply 1CRLF Since the sensor responsivity varies with wavelength turning Wavelength Compensation on with the wavelength set to any value ot...

Page 16: ...st is complete Example Send rstCRLF Reply 1 00 00CRLF SMD Sets the mode of operation 0 is Measure mode 1 is Monitor Mode 2 is Control Mode Example Send SMD2CRLF Reply OK Send SMD Reply 2CRLF The SMD command side effects the AOM update rate Setting the Mode to Measure will set the AOM update rate to 10Hz Setting it to Monitor or Control will set it to 1kHz The Update rate can then be set to any des...

Page 17: ...CRLF Reply OK Send TAR Reply 5 00CRLF PRO Sets the AOM Convergence Gain Voltage in Control Mode Only The range is 0mV Error to 100mV Error This is the proportional gain coefficient for the AOM control The SDX 1239 measures the Mean Energy Error and uses this gain to compute the new AOM Voltage based on the error Setting the gain to 0 will disable AOM corrections Set this value to change the speed ...

Page 18: ...F Reply 12345 00CRLF Reading SDX 1239 Data In Measure Mode the SDX 1239 Sends data at 100ms intervals The data is sent in the format Pulse Data Pulse Period CRLF Pulse Data FRDDD F is the error code R is the range index DDD are the pulse data counts with 3072 being full scale Period Data PPPPPPPP PPPPPPPP is the value of the Period Counter To convert it into the period divide it by 135E6 ...

Page 19: ... 2 and 4 are set 7 Error 1 2 and 4 are set The range index is 0x8 or a range of 3 200µJ The pulse data is 0x269 or 617 counts The energy will be 617 3072 x 200µJ 40 17µJ The period is 0x000009F3 or 2547 counts 39417 135E6 18 868us or 53 000 Hz In Monitor and Control Mode the SDX 1239 Sends data at 100ms intervals The data is sent in ASCII format mean error max error min error standard deviation CR...

Page 20: ...One or more pulses out of range Increase the range setting 2 One of more pulses measured with the head over temperature Reduce the average power 3 Error 1 and 2 set 4 Pulse memory is full Clear the pulse memory 5 Error 1 and 4 are set 6 Error 2 and 4 are set 7 Error 1 2 and 4 are set The range index is 0x8 or a range of 3 200µJ The pulse data is 0x269 0r 617 counts The energy will be 617 3072 x 20...

Page 21: ...9 Operating Instructions Rev 3 21 2017 Page 21 of 22 Range Indices Table Scale Index 2pJ 00 20pJ 01 200pJ 02 2nJ 03 20nJ 04 200nJ 05 2uJ 06 20uJ 07 200uJ 08 2mJ 09 20mJ 10 200mJ 11 2J 12 20J 13 200J 14 2kJ 15 ...

Page 22: ...nt 2 of full scale Instrument and Probe Resolution Energy Measurement 1 part in 2000 Linearity Energy Measurement 1 Accuracy PPS Measurement 1 of reading Resolution PPS Measurement 1pps to 10 000pps 1Hz 10 000pp to 50 000pps 20Hz 50 000pps to 200 000pps 80Hz Input Impedance 10KΩ AOM Output 0 00V DC to 1 00V DC AOM Output Accuracy 1 AOM Output Impedance 100Ω Target Input 0 00V DC to 10 0V DC Target...

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