ryan.crouch@LIGO.ORG - posted 12:51, Friday 28 April 2023 - last comment - 13:19, Friday 28 April 2023(69156)
PCALY-OFS saturated
PCALY-OFS_PD saturated at 19:37UTC, we toggled it off and back on to fix it at 19:44UTC
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The OFS saturated again at 20:03UTC and was toggled off and back on again.
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Suspicious that the issue are the new CAL_AWG_LINES low-frequency PCAL excitations, as defined in LHO:68947, I've reduced the amplitude of all of those PCAL lines by 10% by setting the gain of the H1:CAL-PCALY_DARM bank to be 0.9. We'll run like this for a little bit to see if we like it -- and if we do, I'll edit the gains in the CAL_AWG_LINES guardian.