cheryl.vorvick@LIGO.ORG - posted 00:00, Tuesday 04 July 2017 - last comment - 12:56, Tuesday 11 July 2017(37304)
H1 kicked out of Observe
- 03:52:44UTC - H1 out of Observe
- SDF shows that H1:CAL-PINJX_CW_GAIN should be 1, but was at 0
- channel cleared SDF by going back to 1
- 03:55:45UTC - H1 back in Observe
- not sure if this is a known thing, a new thing, or if possibly someone (not on site) might soon be claiming this change
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CW GAIN issue has been resolved. The CW_GAIN and CW_TRAMP values were being monitored by Guardian, which forced the IFO out of observing when those values changed; those values were changed due to a loss of hardware injections and subsequent restart by the psinject script. Dave Barker and I have changed the gain and ramp to be unmonitored channels again. Notes attached.
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Change undone after the decision was made that losing IFO lock was the desired behavior and issue was mitigated by sparse nature of psinject reset. See aLOG 37447.