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Entry  Tue Oct 27 23:47:53 2020, gautam, Update, General, ISS checkout 
    Reply  Wed Oct 28 14:01:03 2020, not gautam, Update, General, ISS checkout 
       Reply  Wed Oct 28 14:07:47 2020, gautam, Update, General, ISS checkout 
Message ID: 15647     Entry time: Wed Oct 28 14:01:03 2020     In reply to: 15645     Reply to this: 15648
Author: not gautam 
Type: Update 
Category: General 
Subject: ISS checkout 

that little PD in the black mount was never very good. The AD829 is not a good opamp for transimpedance and especially not good for low frequencies. Stefan Ballmer and I were able to get 2e-8 out of these (@100 Hz) many years ago.

I wonder if we have some of Zach's M2ISS photodetectors around, perhaps in QIL or Cryo. I doubt that any of them are in use now. Those had good performance nad BNC output.

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