Ibrahim, TJ

Beginning after the first NPRO Swap recovery on 10/30, there have been 7 or so instances of SRM M3 tripping during PREP_FOR_SRY in initial alignment, predominantly due to Y saturation. TJ and I are investigating.

So far, we know that SRM sees elevated noise while in PREP_FOR_SRY, particularly after SRM re-alignment. We've also found that AS_C SUM is too low to be considered locked at this state, but that ALIGN_IFO guardian continues with SR initial alignment, leading to the WD trip. The current hypothesis is that SRM is catching onto a wrong mode, but tricking the automation into continuing alignment.

The first screenshot shows the incidence of the WD tripping during initial alignment happening frequently after 10/30. There is one instance of it happening 10/16 but nothing in the near past before that.

The second shows one recent instance of this trip, leading to the WD trip.