daniel.sigg@LIGO.ORG - posted 15:54, Monday 10 October 2016 - last comment - 17:42, Monday 10 October 2016(30378)
Whitening Issues
ASC-POP_X shows a broken readback for its second whitening stage on one of its channels. If true, the second stage is engaged on one segment/RF phase. This problem developed on 10/7.
ASC-AS_A_RF45 shows a broken readback for a gain on one of its channels. If true, +12dB is added on one segment/RF phase. This problem developed on 10/9.
Improved the whitening overview screen to include error flags.
AS_A_45 whitening chassis was swapped out - alog 30386.
We'll "cheat around" the POP_X situation for tonight by using the one whitening filter that's stuck on, and not the one that we usually use. Marc and Fil will look at this once they've finished debugging the original AS_A_45 chassis.
Redid the dark offsets for all AS diodes.