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Entry  Fri Feb 15 20:07:28 2013, yuta, Update, Alignment, POP path set up but AS55 is broken 
    Reply  Fri Feb 15 21:22:29 2013, yuta, Update, Electronics, AS55 replaced with POP55 PD 
    Reply  Mon Feb 18 21:43:05 2013, Koji, Update, Alignment, POP path set up but AS55 is broken AS55.pdf
       Reply  Tue Feb 19 00:21:09 2013, yuta, Update, Electronics, POP path set up but AS55 is broken 
          Reply  Tue Feb 19 05:42:28 2013, Koji, Update, Electronics, POP path set up but AS55 is broken 
             Reply  Tue Feb 19 08:06:02 2013, yuta, Update, Electronics, POP path set up but AS55 is broken 
Message ID: 8100     Entry time: Mon Feb 18 21:43:05 2013     In reply to: 8091     Reply to this: 8102
Author: Koji 
Type: Update 
Category: Alignment 
Subject: POP path set up but AS55 is broken 

I undertook the investigation of the AS55 PD. I found the PD is not broken.

I tested the PD on the PD test bench and it works just fine.

I attatched the characterization result as there has been no detailed investigation of this PD as far as I remember.

The transimpedance gain at 55MHz is 420Ohm, and the shotnoise intercept current is 4.3mA.

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