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Entry  Fri Feb 14 17:40:27 2020, anchal, DailyProgress, ISS, Installed ISS on both paths using SR560s IMG_20200214_174127.jpgISS_Effect.pdf
    Reply  Sat Feb 15 18:57:43 2020, rana, DailyProgress, ISS, Installed ISS on both paths using SR560s 
       Reply  Thu Feb 20 17:42:23 2020, rana, DailyProgress, ISS, Installed New ISS on both paths using SR560s ISS_New_Analysis.pdf
          Reply  Sun Feb 23 18:19:32 2020, rana, DailyProgress, ISS, Installed New ISS on both paths using SR560s 
             Reply  Fri Feb 28 14:00:11 2020, anchal, DailyProgress, ISS, Installed New ISS on both paths using SR560s - PROBLEM 
                Reply  Sun Mar 1 16:34:31 2020, rana, DailyProgress, ISS, Installed New ISS on both paths using SR560s - PROBLEM 
                   Reply  Mon Mar 2 16:48:12 2020, anchal, DailyProgress, ISS, Follow-up, porbalem stopped happening, OLTF plot. NISS_OLTF.pdf
Message ID: 2539     Entry time: Sat Feb 15 18:57:43 2020     In reply to: 2538     Reply to this: 2542
Author: rana 
Type: DailyProgress 
Category: ISS 
Subject: Installed ISS on both paths using SR560s 

you don't need 6(!!) SR560s - just 1 for each loop:

  • AC coupled,
  • 1st order high pass at 300 Hz,
  • 1st order low pass at 300 Hz
  • Aim for a UGF of ~10 kHz

Then use multi-res spectra and check out the out-of-loop noise (with loop on/off). The in-the-loop noise is always an underestimate.

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