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NI actuator relative calibration

by Benoit Mours — last modified 2008-07-08 10:11

This is the um/Volts extracted from WSR6 lines injections

The “effective” calibration constant for the NI mirror is computed using the lines injected on this tower.

This is done by looking at the dataDisplay transfer function: h_20kHzNo50 over SC_NI_LoopIn.

Then the measured values are renormalized by the factor 3000*(f/0.6)**2 where f is 102 or 352Hz.

The following results are obtained using the hrec-v1 and hrec-v2 files:

Session # 1 90 s starting at 849079016:

  •  line at 102Hz: 13.4 um/Volts (for hrec-v1) 12.5 um/Volts (for hrec-v2)   
  •  line at 352Hz: 14.7 um/Volts  (for hrec-v1) 14.1 um/Volts (for hrec-v2)

Session # 2 90 s starting at 849225003

  •  Line at 102Hz: 13.4 um/Volts  (for hrec-v1) 12.4 um/Volts (for hrec-v2)   
  •  Line at 352Hz: 14.7 um/ Volts (for hrec-v1) 14.1 um/Volts (for hrec-v2)    

Mean value: 14.0 um/Volts for hrec-v1 and 13.3 um/Volts for hrec-v2