patrick.thomas@LIGO.ORG - posted 09:34, Sunday 13 November 2016 - last comment - 13:23, Monday 14 November 2016(31449)
IMC not locking
It appears to be coincident with noise in the FSS (see attached plot). It may be that the IMC feeds back to the FSS though?
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I guess this was a red herring. I cleared the history on all of the IMC WFS DOF and it locked right up. The FSS signal quieted after the IMC locked.
I'm not sure if Patrick used my IMC wiki page, but it's called "Diagnosing IMC locking issues" and it's found on the OPS Wiki page.