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40m Log |
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Message ID: 9932
Entry time: Thu May 8 17:00:56 2014
Reply to this: 9936
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Author: |
rana, Q |
Type: |
Summary |
Category: |
LSC |
Subject: |
REFL_DC handoff didn't work last night |
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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:
- The ISS was injecting a lot of very low frequency power fluctuations because of bad AC coupling.
- 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.
- The ISS was also saturating a lot. We turned it off around 4 AM, but still no success.
- 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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