Reports until 16:06, Thursday 10 March 2016
H1 SEI (SUS)
hugh.radkins@LIGO.ORG - posted 16:06, Thursday 10 March 2016 (25993)
ISI vs SUS GS13 Calibration comparison for use to M0 Euler motion--Works fine?

Re ISI offloading SUS ISI M0 motion calibration--Looks like it works just fine

As the SUS model is running at 16khz and the ISI is running at 4khz, thought it best to confirm the calibration filters are easily ported to the other model.  The CAL filter running on the ISI (just ITMY for the moment) is just a copy of the SUSpension Cal filter.  Gratefully, the SUS filter bank had a 4k to 16khz filter to process the GS13 data coming from the ISI.

Spectra shows the comparision with solid coherence out to 100hz whereafter it falls off  by a few 100s of hz.  Well that is only true with a 1hz bw.  When I do a .01bw spectra, the coherence starts to falter around 4hz.  The .01hz spectra is attached.

Images attached to this report