Alog from yesterday morning, forgot to post. No exciting details though.
- Offloaded SOFT offsets to QPDs from dof input offsets. (Typo, so lost lock...)
- Lost lock at coil drivers - looked maybe like a pitch instability?
- Ran A2L at 20W with SOFT loops closed and converged. Set new SOFT dither line amplitudes and demod phases. Demod output doesn't seem to cross zero which might be due to the A2L being set at 30 Hz and the dithers being run at 7.5-8.5 Hz.
- Struggling with the Offload_DRMI_ASC state again, need to rephase AS36. Changed by 25 deg, also put in input limiters to reduce the transient when we turn the MICH ASC loops back on.
- Lost lock a few times at NomLowNoise trying to open the SOFT loops. Not sure why.
Hang and I tried a few more times to set up the SOFT dither loops, without success / understanding so far. We'll try again this afternoon after maintenance.