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Entry  Thu May 8 17:00:56 2014, rana, Q, Summary, LSC, REFL_DC handoff didn't work last night 
    Reply  Fri May 9 04:51:13 2014, ericq, Summary, LSC, REFL_DC handoff didn't work last night 
Message ID: 9932     Entry time: Thu May 8 17:00:56 2014     Reply to this: 9936
Author: rana, Q 
Type: Summary 
Category: LSC 
Subject: REFL_DC handoff didn't work last night 

Last night after checking cabling and turning on ISS, we tried several times to handoff to REFL_DC but it didn't work at all.

Some issues:

  1. The ISS was injecting a lot of very low frequency power fluctuations because of bad AC coupling.
  2. The SR560 @ LSC rack was saturating a lot with the x10 gain that Jenne and Rana put in; we turned it back to G = 1.
  3. The ISS was also saturating a lot. We turned it off around 4 AM, but still no success.
  4. The ALS sequence for finding the Red Resonance takes too long (~2 minutes), so we're trying a faster scheme tonight.
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