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Entry  Fri Jul 12 12:51:13 2013, Charles, Update, ISS, RMS Noise from PMC Transmission 
    Reply  Fri Jul 12 13:15:43 2013, Koji, Update, ISS, RMS Noise from PMC Transmission 
       Reply  Fri Jul 12 18:30:20 2013, Charles, Update, ISS, RMS Noise from PMC Transmission 
Message ID: 8838     Entry time: Fri Jul 12 13:15:43 2013     In reply to: 8836     Reply to this: 8839
Author: Koji 
Type: Update 
Category: ISS 
Subject: RMS Noise from PMC Transmission 

It would be better to measure the power spectrum density of the fluctuation.
The RMS does not tell enough information how the servo should be.
In deed, the power spctrum density gives you how much the RMS is in the entire or a specific frequency range.

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