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Message ID: 8734     Entry time: Thu Jun 20 17:47:44 2013
Author: Annalisa 
Type: Configuration 
Category: SUS 
Subject: ETMY oplev servo 

[Jenne, Annalisa]

The ETMY Oplev servo didn't work properly, when it was activated the ETMY moved too much.

We measured the oplev TF for Pitch and Yaw and it turned out that the gain was too low by a factor 3, so we increased the gain from -.250 to -.750 on both.

We also locked the Y arm and we could see that the mirror's oscillations are actually suppressed.

 

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