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Entry  Fri Jun 11 20:33:17 2010, Dmass, Computing, DAQ, Attempt at oven transfer functions dmassFE.png
    Reply  Wed Jun 16 15:54:20 2010, Dmass, Computing, DAQ, Attempt at oven transfer functions 
       Reply  Wed Jun 16 23:10:28 2010, Dmass, Computing, DAQ, Attempt at oven transfer functions 
          Reply  Thu Jun 17 15:14:58 2010, Dmass, Computing, DAQ, Attempt at oven transfer functions CuOvenIStepResponse.pdf
             Reply  Fri Jun 18 18:04:23 2010, Dmass, Computing, DAQ, Attempt at oven transfer functions 
                Reply  Fri Jun 18 18:07:53 2010, Dmass, Computing, DAQ, Attempt at oven transfer functions 
Message ID: 818     Entry time: Thu Jun 17 15:14:58 2010     In reply to: 816     Reply to this: 820
Author: Dmass 
Type: Computing 
Category: DAQ 
Subject: Attempt at oven transfer functions 

And a measurement of the oven's step response

  • I used a lab power supply as a current source for the TEC on the oven
  • I tweaked the current nob to make a current step
  • I looked at the step response
  • I used a phone video of the readout on the front of the Newport 3040 to get time stamps b/c it was so easy
  • (I will still be hooking up the RS232)

Results

  • I get a time constant of 60 seconds
  • This is an oven pole frequency of 16.7 mHz

 

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