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Entry  Fri Mar 28 20:23:02 2014, rana, Summary, IOO, MC2 moved 
    Reply  Mon Mar 31 11:34:00 2014, manasa, Summary, IOO, MC2 moved 
       Reply  Thu Apr 10 10:52:15 2014, manasa, Summary, IOO, MC2_TRANS path in WFS servo 
       Reply  Fri Apr 25 23:08:57 2014, rana, Summary, IOO, MC2_TRANS QPD Servo re-re-engaged again 
          Reply  Sat Apr 26 13:19:59 2014, ericq, Summary, IOO, MC2_TRANS QPD Servo re-re-engaged again 
          Reply  Mon Apr 28 15:47:57 2014, manasa, Summary, IOO, MC2_TRANS QPD Servo trend MC_TRANSservoApr28.png
             Reply  Mon Apr 28 20:31:38 2014, rana, Summary, IOO, MC2_TRANS QPD Servo trend Untitled.png
                Reply  Wed Apr 30 21:57:07 2014, rana, Summary, IOO, MC2_TRANS QPD Servo now on for real dolphin.pngMC2_QPD_trend.png
Message ID: 9886     Entry time: Wed Apr 30 21:57:07 2014     In reply to: 9871
Author: rana 
Type: Summary 
Category: IOO 
Subject: MC2_TRANS QPD Servo now on for real 

dolphin.pngMC2_QPD_trend.png

During a lull in Koji vs. The Arm, I switched on the MC2_TRANSQPD feedback path to check out its UGF. In the past months, when its been on, it has had a gain of ~0.03 - 0.1.

Today, I found that with the gain turned up to 11, it has a ~1 minute step response time (as you see in the above Strip chart). So its had a UGF of ~2 hours or so during the times when we thought it might be doing bad or good or magic.

I leave it on now to see if it behaves well over the next days. Let's see if Steve thinks its good or not based on his trend monitoring.

** also touched up the PMC pointing (using the PMC REFL image / please never align the beam into the PMC without this camera image)

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