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Entry  Tue Sep 21 17:11:12 2010, Alastair, Electronics, GYRO, pdh box re-modifying 6x
    Reply  Wed Sep 22 15:16:07 2010, Alastair, Electronics, GYRO, pdh box re-modifying 
       Reply  Wed Sep 22 17:03:24 2010, Alastair, Electronics, GYRO, pdh box re-modifying amplitude.pngphase.png
Message ID: 1078     Entry time: Wed Sep 22 17:03:24 2010     In reply to: 1077
Author: Alastair 
Type: Electronics 
Category: GYRO 
Subject: pdh box re-modifying 

I've replaced the 3.3uF capacitor as C28 in PDH box 1437.  The measured open loop transfer function of the box now has a weird resonance up around 70kHz though which I really don't like the look of and it loses a huge amount of phase above this.  Below that frequency it looks very much like the liso model.

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