Reports until 11:51, Thursday 23 January 2025
H1 ISC
jim.warner@LIGO.ORG - posted 11:51, Thursday 23 January 2025 (82419)
Filters added for ETMX glitch squish, will wait to test

I have added whitening and dewhitening filters to the appropriate esd to 28 bit dac filters for the glitch limiting I posted about here. Filters can be accessed from the 28 bit dac test screen called DAC TEST, under the WD tab on the sitemap. Filters aren't engaged, locking has been a challenge this morning and I'm not sure when the filters should be engaged. I also need to try to figure out what the limit should be. I will try to see if we can fit a test in during a commissioning window next week.

Whitening filters are in the L3_ESD_{U/L}{L/R} filters, on the input column of the DAC TEST medm, limits should get applied in those filter banks as well. Dewhitening filters are in the ETMX_18_2_28_CHAN_1/2/3/4 filters in the output row on the bottom of the screen.

Filters I installed are shown in the attached image.

Images attached to this report