SRM M1-3 had tripped while in initial alignment while trying to lock SRY. This has been the case for the last few weeks. Even after the WD trips, the SRM model will continue to saturate for several minutes. After it failed on its own a few times, I requested ALIGN_IFO to DOWN and adjusted SRM in P to get AS_A brighter and the camera looking better. This worked. I ended up moving it by 26urad.
For whatever reason, trying to trend what what happening with SRM right before the trips freezes my ndscope. Everything else is running fine. I'll look into this back on site.
Just made it past DRMI, all looks good.
Looks like SRY locked but then immediately lost it, perhaps right on the cusp of having enough signal. ALIGN_IFO goes to DOWN and starts to turn things off, but the L drive from SRCL is still on for ~2.5 seconds. Even after it gets turned off SRM is still swinging. attachment 1
I'm a bit confused how Y is seen to be moving at 1Hz so much when we are only driving L. Looks like this issue has only been happening for a few weeks when I trend the SRM WD trips. We have tripped not only during SRY locking but a few times during DRMI acquisition as well. The timing is very suspicious with the SRM sat amp swap from Sept 23 - alog87103 alog87105.