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Entry  Tue Jul 23 22:31:08 2013, alonzi, Evaluation Board Behavior Screenshot.pngdata_problem.png
    Reply  Tue Jul 23 22:35:08 2013, Stefan Ritt, Evaluation Board Behavior 
       Reply  Tue Jul 23 22:42:31 2013, alonzi, Evaluation Board Behavior 
          Reply  Thu Jul 25 01:31:29 2013, Andrey Kuznetsov, Evaluation Board Behavior 
Message ID: 276     Entry time: Tue Jul 23 22:31:08 2013     Reply to this: 277
Author: alonzi 
Subject: Evaluation Board Behavior 

Working with the DRS evaluation board we noticed some funny behavior: See attatchment 1. In about 1% of scope traces we see the first and last bin take on a value substantially different from the baseline, note the small spikes on the end of the traces. These spikes occur across all channels and either appear in all channels or in none. Attachment two shows what several thousand scope traces look like. You can clearly see that some of the traces are offset from the normal base line. Has anyone observed this behavior before? Any ideas?

see https://muon.npl.washington.edu/elog/g2/Detectors/550 for full discussion. 

Attachment 1: Screenshot.png  57 kB  | Hide | Hide all
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Attachment 2: data_problem.png  9 kB  | Hide | Hide all
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