TITLE: 07/08 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY: Attempting to relock and in ENGAGE_ASC_FOR_FULL_IFO. We've had bad luck attempting to relock after maintenance. Last night there were a lot of issues with trying to relock, and once we started relocking after maintenance today, we realized why. Once DRMI ASC turned on, SRC1 started getting pulled away, and we realized that it was because there were offsets in the filter banks that are not supposed to be there. Elenna and gang had noticed that yesterday as well (85593), and had tried to correct it, but appearently there were other places where SRC1 offsets were set and turned on that got missed. We found these today and corrected it. After that we had a lockloss while we were in OMC_WHITENING waiting for violins to damp because of a 1 Hz oscillation (ndscope). We tried relocking and sat in MOVE_SPOTS to try and take some measurements to determine where the oscillation had come from, but we had a lockloss from an earthquake during that time. We then just sat in DOWN for a while and took some measurements to see if we could find the cause of the oscillation, but we just ruled some things out (85639, 85641).
LOG:

14:30 Relocking and in an initial alignment. I put us to IDLE after input align offloaded so we could start maintenance
18:37 Relocking start
    - Initial alignement
        - SRY wouldn't lock, so Elenna touched up SRM
    - Once DRMI ASC turned on, SRC1 started getting pulled away. This was due to offsets in SRC1 being turned on - related to 85593 - lockloss from OFFLOAD_DRMI_ASC
    - Lockloss from OMC_WHITENING due to 1Hz ASC ringup
    - Lockloss from MOVE_SPOTS due to earthquake. We had been sitting in MOVE_SPOTS while running tests to try adn figure out the cause of the oscillation earlier.