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Entry  Tue Jul 16 15:17:57 2019, Koji, HowTo, CDS, Final bit bug of the BIO CDS module  
    Reply  Tue Sep 17 14:43:59 2019, gautam, HowTo, CDS, Final bit bug of the BIO CDS module  Screen_Shot_2019-09-17_at_2.44.41_PM.png
Message ID: 14890     Entry time: Tue Sep 17 14:43:59 2019     In reply to: 14764
Author: gautam 
Type: HowTo 
Category: CDS 
Subject: Final bit bug of the BIO CDS module  

Came across this while looking up the BIO situation at 1Y2. For reference, the fix Koji mentions can be seen in the attached screenshot (one example, the other BIO cards also have a similar fix). The 16th bit of the BIO is grounded, and some bit-shifting magic is used to implement the desired output.

Quote:

Yutaro talked about the BIO bug in KAGRA elog. http://klog.icrr.u-tokyo.ac.jp/osl/?r=9536

I think I made the similar change for the 40m model somewhere (don't remember), but be aware of the presense of this bug.

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