Reports until 05:34, Thursday 30 May 2019
H1 General
jeffrey.bartlett@LIGO.ORG - posted 05:34, Thursday 30 May 2019 - last comment - 12:10, Friday 31 May 2019(49551)
Accept SDF Differences after Relocking
   Accepted the following SDF differences upon relocking after the El Salvador earthquake. 
Images attached to this report
Comments related to this report
sheila.dwyer@LIGO.ORG - 07:45, Friday 31 May 2019 (49573)

In the lockloss before this, 1243243265 Jeff tried to transition the IFO to EQ mode.  The attached screenshot shows that this took us out of observing, which it is not supposed to. These sensor correction TRAMP SDF differences are probably the reason we were taken out of observe.  Travis says that he also took the IFO to EQ mode early this morning and it stayed in observe. 

The PRM differences here are strange. 

Images attached to this comment
jim.warner@LIGO.ORG - 12:10, Friday 31 May 2019 (49580)

After the lockloss a couple of days ago for a small earthquake, I increased the ramp times for the senscor "fade" switching to 30 seconds. Because the composition of the ground feedforward signal isn't the same (local gnd sensor vs (local gnd - site common gnd)) the outputs can differ by several microns. It looks like the senscor guardians must be resetting this value for some reason? I also don't understand why ETMY ISI only shows diffs for 1 dof, and the other BSC isi's show 2. Should be the same.