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40m Log |
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Sat Nov 12 01:09:56 2016, gautam, Update, LSC, Recovering DRMI locking
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Wed Nov 16 03:10:01 2016, gautam, Update, LSC, DRMI locked on 1f and 3f signals
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Wed Nov 16 08:14:43 2016, Steve, Update, LSC, DRMI locked on 1f and 3f signals
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Mon Nov 21 14:02:32 2016, gautam, Update, LSC, DRMI locked on 3f signals, arms held on ALS
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Wed Nov 23 16:21:02 2016, gautam, Update, LSC, ITMY UL glitches are back
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Mon Nov 28 10:27:13 2016, gautam, Update, SUS, ITMY UL glitches are back 
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Tue Nov 29 11:07:37 2016, Steve, Update, LSC, ITMY UL glitches are back
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Wed Nov 30 01:47:56 2016, gautam, Update, LSC, Suspension woes
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Wed Nov 30 17:08:56 2016, gautam, Update, LSC, Binary output breakout box removed
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Thu Dec 1 02:19:13 2016, gautam, Update, LSC, Binary output breakout box restored   
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Thu Dec 1 08:02:57 2016, Steve, Update, LSC, glitching ITMY_UL_LL
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Fri Dec 2 11:56:42 2016, gautam, Update, LSC, MC1 LEMO jiggled 
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Mon Dec 5 15:05:37 2016, gautam, Update, LSC, MC1 glitches are back
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Thu Dec 8 10:13:43 2016, Steve, Update, LSC, glitching ITMY_UL has a history
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Message ID: 12652
Entry time: Wed Nov 30 17:08:56 2016
In reply to: 12648
Reply to this: 12653
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Author: |
gautam |
Type: |
Update |
Category: |
LSC |
Subject: |
Binary output breakout box removed |
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[ericq, gautam]
To diagnose the glitches in OSEM readouts, we have removed one of the PCIE BO D37 to IDE50 adaptor boxes from 1X5. All the watchdogs were turned off, and the power to the unit was cut before the cables on the front panel were removed. I am working on the diagnosis, I will update more later in the evening. Note that according to the c1sus model, the box we removed supplies backplane logic inputs that control whitening for ITMX, ITMY, BS and PRM (in case anyone is wondering/needs to restore damping to any of these optics). The whitening settings for the IMC mirrors resides on the other unit in 1X5, and should not be affected. |