With a new damping filter for ETMY mode 20, I have damped modes 12, 18, and 20, with a great deal of monitoring, so be aware that the settings are not tested, have only worked tonight, and not always well, so they're available, but not to be used unattended.
Current Gains for ETMY:
- mode 12: gain = 10
- mode 18: gain = 10
- mode 20: gain = 1
- gains that are higher will work, however, with higher gains, when there's a glitch, anywhere from one to all 3 modes will ring up
I added 4 new damping filters and one monitor filter into the violin mode filter banks for 5 modes, saved and loaded.
- Damping filters added to ETMY modes 1, 6, and 20, and ITMY mode 2.
- Monitor filter added to ETMY mode 7.
I took 10 minutes to try the new ETMY mode 20 filter, after reaching NLN, and it looked promissing, but I wanted the option to use either the old or new filter, so I unmonitored FM1 (old filter) and FM7 (new filter) in SDF. In order to put a new filter in FM7, I removed an ancient 1.5K violin mode damping filter.
To clear SDFs I accepted ETMY mode 7 changes, in the attached snapshot, and I unmonitored ETMY mode 20 filters FM1 and FM7.
Later, switching the phase on ETMY mode2 caused H1 to be kicked out of Observe, so I unmonitored the phase filter banks, FM2, FM3, FM4, and FM5.
Attachments:
- ETMY modes 12, 18, and 20 - current damping, 30 minutes, showing gains used to damp all 3 modes
- ETMY modes 12, 18, and 20 - full history from the beginning of the current lock
- ETMY mode 20 filter bank snapshot, in NLN, in the current damping configuration, though the gain may be different
- ETMY mode 1 filter bank snapshot, in NLN, untested
- ETMY mode 6 filter bank snapshot, in NLN, untested
- ITMX mode 2 filter bank snapshot, in NLN, untested
- SDF diffs for ETMY mode 7 monitor filter and gain changes, where gains match all other monitor filter gains, and I created the mode7 monitor filter
- SDF diff for ETMY mode 20 filter bank, which had the new filter enguaged, but zero gain on the filter bank, FM1 and FM7 are not not monitored
- SDF snapshot of unmonitored filters in ETMY mode 12, FM2, FM3, FM4, FM5
- power spectra showing the peaks for ETMY modes 12, 18, and 20, from the beginning of the lock, before using the new filter on mode 20, and current, as of this alog
