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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 WSR7 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 files:
Session # 1 90 s starting at 852687260:
- line at 102Hz: 15.7 um/Volts
- line at 352Hz: 14.6 um/Volts
Session # 2 90 s starting at 852852745
- Line at 102Hz: 15.2 um/Volts
- Line at 352Hz: 14.6 um/Volts
Mean value: 15.0 um/Volts