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Message ID: 4186     Entry time: Fri Jan 21 23:55:25 2011
Author: rana 
Type: Configuration 
Category: LSC 
Subject: Phase Noise Measurement filter 

We've set up a beat note measurement between the VCO driver and the Marconi (see Suresh's elog).

Here's the 'unWhiten' filter for compensating the SR560 TF.

It has poles = 1 mHz, 5 kHz, 5 kHz

and  zeros = 30 mHz, 1 kHz

The gain is set to be ~0.001 in the 1-100 Hz band to compensate the G=1000 of the SR560.

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