jenne.driggers@LIGO.ORG - posted 10:22, Monday 11 April 2016 - last comment - 14:47, Tuesday 12 April 2016(26521)
Terminated LO inputs of AS 90 WFS
I have terminated the LO inputs to the AS 90 WFS chassis (as well as the cables that normally go to these ports), so that we can see if the dark offsets are more stable without the triplexer. Later today, I'll swap the terminators to be at the front of the triplexer box, to see if that changes things.
I have reverted this back to its nominal configuration. It looks like the signals got much cleaner on 9Apr, around 10UTC, so I want to see if they are still clean after going back to the nominal config. I can't find any cables that seemed bumped or out of place from the vacuum team's work, although they were working in the HAM6 area on both Thursday and Friday last week.