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Entry  Tue Dec 4 23:16:35 2007, tobin, Update, PSL, ISS 
    Reply  Wed Dec 5 17:49:57 2007, tobin, Update, PSL, ISS rin.pdf
       Reply  Wed Dec 5 18:22:03 2007, tobin, Update, PSL, ISS dark noise sense_noise.pdf
          Reply  Wed Dec 5 20:32:51 2007, tobin, Update, PSL, ISS dark noise 
             Reply  Thu Dec 6 19:30:43 2007, tobin, Update, PSL, ISS dark noise - 60 Hz! iss.pdf
                Reply  Fri Dec 7 19:14:30 2007, tobin, Update, PSL, ISS dark noise - ground loop enlightenment 
Message ID: 171     Entry time: Wed Dec 5 20:32:51 2007     In reply to: 169     Reply to this: 177
Author: tobin 
Type: Update 
Category: PSL 
Subject: ISS dark noise 
The ISS dark noise is not coming from the PD heads; the spectrum is essentially unchanged when the PD is unplugged from the ISS. Did the input opamps both get semi-fried in the same way? (They worked so well when they were first installed.) What else changed? I'm baffled. Frown
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