cheryl.vorvick@LIGO.ORG - posted 07:27, Wednesday 01 February 2017 (33795)
PI modes 27, 28, and 26 rang up in that order
- PI mode 27 rang up first, but I had trouble damping it, followed Terra's instructions, changed phase, lowered the gain, changed the phase on the damping fitler
- mode 27 leveled off
- in the mean time mode 28 rang up, followed Terra's instructions, changed phase, changed the gain, changed the phase on the damping fitler
- mode 28 leveled off
- mode 26 rang up
- Terra called, identified that the drive to ETMY was saturating
- I lowered mode 27's gain even more (was 7000, then 3500, now 2000)
- reset damping filter phases with SDF
- it took a few minutes, but all modes damped
- H1 into Observe
- the range drop before going to Observe is due to PI modes, tagging for DetChar
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