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Message ID: 7211     Entry time: Fri Aug 17 00:16:30 2012
Author: Eric 
Type: Summary 
Category: LSC 
Subject: YARM Calibration 

I modified my Simulink model of the YARM to match the new filter modules Rana installed on YARM. I also scaled the open loop transfer function of the model to fit the measured open loop transfer function at the unity gain frequency, as shown in the figure below. From this I produced the length response function correctly scaled, also shown below.  Then I applied the calibration factor to the YARM data measured in /users/Templates/Y-Arm_120815.xml. Both the uncalibrated and calibrated spectra are included below.

 

 

Attachment 1: olg_model_meas.png  48 kB  | Hide | Hide all
olg_model_meas.png
Attachment 2: length_response_model.png  58 kB  | Hide | Hide all
length_response_model.png
Attachment 3: yarm_uncal_power_spec.pdf  132 kB  | Hide | Hide all
yarm_uncal_power_spec.pdf
Attachment 4: yarm_cal_power_spec.pdf  150 kB  | Hide | Hide all
yarm_cal_power_spec.pdf
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