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Entry  Sat Oct 30 05:27:53 2010, yuta, Summary, CDS, CDS time delay measurement delaysetup.pngCDSdelay.png
    Reply  Sat Oct 30 14:35:43 2010, Koji, Summary, CDS, CDS time delay measurement CDS_system_investigation_090323.pdf
       Reply  Mon Nov 1 15:47:15 2010, yuta, Summary, CDS, CDS time delay measurement downupsampling.pngCDSdelay2.png
          Reply  Mon Nov 1 16:43:24 2010, Koji, Summary, CDS, CDS time delay measurement 
             Reply  Sat Nov 20 03:37:11 2010, yuta, Summary, CDS, CDS time delay measurement - the ripple c1tst16Kdelay.png
Message ID: 3839     Entry time: Mon Nov 1 16:43:24 2010     In reply to: 3838     Reply to this: 3961
Author: Koji 
Type: Summary 
Category: CDS 
Subject: CDS time delay measurement 

Um, Beautiful.

Actually, 123.5usec is almost exactly twice of 1/16384Hz.
Because of the loop, we have 1/16384Hz delay. I wonder where we do have the delay.

In order to understand the behaviour of the system can I ask you to test the following things?

1) What are the delay without IOPs with fsampl of 16k, 32k, 64k?

2) What are the delay with IOP with fsampl of 32k, 64k?

Quote:

Result:
  TF agreed well with 2-time feCoeff4x and CDS time delay was -123.5 usec.
CDSdelay2.png

 

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