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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: 12638
Entry time: Wed Nov 23 16:21:02 2016
In reply to: 12611
Reply to this: 12643
12644
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Author: |
gautam |
Type: |
Update |
Category: |
LSC |
Subject: |
ITMY UL glitches are back |
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Quote: |
As an aside, we have noticed in the last couple of months glitchy behaviour in the ITMY UL shadow sensor PD output - qualitatively, these were similar to what was seen in the PRM sat. box, and since I was able to get that working again, I did a similar analysis on the ITMY sat. box today with the help of Ben's tester box. However, I found nothing obviously wrong, as I did for the PRM sat. box. Looking back at the trend, the glitchy behaviour seems to have stopped some days ago, the UL channel has been well behaved over the last week. Not sure what has changed, but we should keep an eye on this... |
I've noticed that the glitchy behaviour in ITMY UL shadow sensor readback is back - as mentioned above, I looked at the Sat. Box and could not find anything wrong with it, perhaps I'll plug the tester box in over the Thanksgiving weekend and see if the glitches persist...

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