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Tue Mar 2 19:52:46 2021, gautam, Update, LSC, REFL55 demod board rework
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Wed Mar 3 22:13:05 2021, gautam, Update, LSC, REFL55 demod board rework
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Thu Mar 4 23:16:08 2021, Koji, Update, LSC, REFL55 demod board rework    
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Fri Mar 5 13:53:57 2021, gautam, Update, LSC, REFL55 demod board rework
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Fri Mar 5 15:31:23 2021, Koji, Update, LSC, REFL55 demod board rework
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Fri Mar 5 16:24:24 2021, gautam, Update, LSC, REFL55 demod board re-installed in 1Y2 
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Fri Mar 5 22:25:13 2021, gautam, Update, LSC, PRMI 1f SB locking recovered
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Message ID: 15855
Entry time: Tue Mar 2 19:52:46 2021
Reply to this: 15859
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Author: |
gautam |
Type: |
Update |
Category: |
LSC |
Subject: |
REFL55 demod board rework |
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There were multiple problems with the REFL55 demod board. I fixed them and re-installed the board. The TFs and noise measured on the bench now look more like what is expected from a noise model. The noise in-situ also looked good. After this work, my settings for the PRMI sideband lock don't work anymore so I probably have to tweak things a bit, will look into it tomorrow. |