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Entry  Thu Jul 31 19:37:59 2014, Koji, Update, IOO, Successful modification of the FSS 
    Reply  Fri Aug 1 11:11:12 2014, Koji, Update, IOO, Current IMC servo configuration diagram.pdf
Message ID: 10321     Entry time: Fri Aug 1 11:11:12 2014     In reply to: 10310
Author: Koji 
Type: Update 
Category: IOO 
Subject: Current IMC servo configuration 

The comparison between the new and old MC servo (FSS part) was attached.

- The new servo has the same DC range as before.
  Even though there is 1/2 gain in the chain now, the previous range of the FSS box was 0 to 10V.
  Now it is +/-10V. So we did not lose the range.

- The new servo has x3.2 larger range above 100Hz.

- x1.6 enhancement of the FSS Box output noise above 10Hz.

- The noise of the HV amp (and the summing amp) is x300 and x2600 more filtered at 10kHz and 100kHz respectively.

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diagram.pdf
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