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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: 3830     Entry time: Sat Oct 30 14:35:43 2010     In reply to: 3829     Reply to this: 3838
Author: Koji 
Type: Summary 
Category: CDS 
Subject: CDS time delay measurement 

Unsatisfactory.

Neglecting the digital anti-imaging filter makes the discrepancy. You must take into account your digital filter twice.

I attached the slides I made during my visit for March LVC '09. P.5 would be useful.

Quote:

Result:
  [time delay of the CDS]  (left, middle)
    The time delay gets larger with frequency. The time delay seems to be -175 usec at DC.
    However, the gain seems a little different from my expectation(feCoeff4x). So, there are maybe other filters I don't know.
    I neglected TF of upsampling this time.

 

Attachment 1: CDS_system_investigation_090323.pdf  589 kB  Uploaded Sat Oct 30 15:40:02 2010  | Show | Show all
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