TITLE: 10/21 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: Flipped the gain sign and added -60deg to 4735Hz damping filter (added to Guardian). The mode hasn't caused us any trouble tonight (as mentioned in alog30713). Lockloss multiple times at DC Readout. I found that sitting at DC_READOUT_TRANSITION for a while helps (unclear to me why -- all the control signal looks fine). Had trouble locking FSS many times tonight. Every unsuccessful FSS lock seems to cause the noise eater to complain (and also kills ISS and PMC). I ended up locking FSS in the LVEA near the PSL where I can easily toggle noise eater. A successful trick seems to be locking FSS first, and the rest (ISS, PMC) will follow. Just keep hitting ON button on the auto lock until it stays on. Had no problem locking PRMI/DRMI last time I tried (besides alignment issue). Watch out for PI Mode27. The damping phase changes constantly.