TITLE: 07/05 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: An earthquake lockloss then a PI lockloss. Currently at MAX_POWER
Lock3:
To recap for SQZ, I have unmonitored 3 SQZ channels on syscssqz (H1:SQZ-FIBR_SERVO_COMGAIN, H1:SQZ-FIBR_SERVO_FASTGAIN, H1:SQZ-FIBR_LOCK_TEMPERATURECONTROLS_ON) that keep dropping us out of observing for now until their root issue can be fixed (Fiber trans PD error, too much power on FIBR_TRANS?). I noticed that each time the GAINS change it also drops our cleaned range
It seems that as you found, the issue was the max power threshold. Once Ryan raised the threshold in 78881, we didn't see this happen again, plot attached. I've re-monitored these 3 SQZ channels: sdfs attached (H1:SQZ-FIBR_SERVO_COMGAIN, H1:SQZ-FIBR_SERVO_FASTGAIN, H1:SQZ-FIBR_LOCK_TEMPERATURECONTROLS_ON) and TEMPERATURECONTROLS_ON accepted.
It's expected that the CLEAN range would drop as that range only reports when the GRD-IFO_READY flag is true (which isn't the case when there's sdf diffs).