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Entry  Fri Mar 29 19:23:49 2013, Gabriele, Jenne, Frogs, LSC, Analog whitening filter of REFL55 not switching 
    Reply  Fri Mar 29 19:58:24 2013, Gabriele, Jenne, Frogs, LSC, Analog whitening filter of REFL55 not switching 
    Reply  Mon Apr 1 16:24:09 2013, Jamie, Frogs, LSC, PD whitening switching fixed (loose connection at break-out box) 20130401_161858.jpg20130401_161917.jpg
Message ID: 8377     Entry time: Fri Mar 29 19:58:24 2013     In reply to: 8375
Author: Gabriele, Jenne 
Type: Frogs 
Category: LSC 
Subject: Analog whitening filter of REFL55 not switching 

Quote:

We discovered that the analog whitening filter of the REFL55_I board is not switching when we operate the button on the user interface. We checked with the Stanford analyzer that the transfer function always correspond to the whitening on.

The digital one is actually switching. We decided to keep the digital de-whitening on to compensate for the analog one. Otherwise we get a very bad shape of the PDH signal. Sorry Rana...

 I forgot to say that the analog gain of the REFL55 channels has been reduced to 9db

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