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Entry  Mon Nov 15 18:05:34 2010, tara, DailyProgress, BEAT, coherence <fbeat|RCAV>, <fbeat|ACAV> coherence_before_realign.pngcoherence_after_realign.pngbeat_2010_11_15.png
    Reply  Mon Nov 15 19:22:58 2010, rana, DailyProgress, NoiseBudget, Preparation to suppress intensity noise. 
       Reply  Tue Nov 16 03:36:55 2010, tara, DailyProgress, NoiseBudget, Preparation to suppress intensity noise. RIN.pngcoh.png2010_11_15.matcurrent_mod_TF.pngTF_current.mat
Message ID: 393     Entry time: Mon Nov 15 19:22:58 2010     In reply to: 392     Reply to this: 394
Author: rana 
Type: DailyProgress 
Category: NoiseBudget 
Subject: Preparation to suppress intensity noise. 

We need to see a plot of the coherence between the PMC trans and Rcav trans and the Acav trans. Also the RIN of all 3 plotted on the same plot.

Then, inject a small line into the current adjust at 100 Hz and measure the height of the peak on all three trans and the beat signal. Use this peak to scale them all and put them on the same plot in physical units.

Then measure the TF from the current adjust actuator to the PMC trans and close an AC coupled feedback loop on it.

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