40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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Entry  Thu May 1 03:15:03 2014, Jenne, Update, LSC, Yarm locking with CM board Yarm_CMlocking_spectra_30Apr2014_copy.pdfYarm_CMlocking_TFs_30Apr2014_copy.pdf
    Reply  Thu May 1 03:23:07 2014, ericq, Update, LSC, Yarm locking with CM board 
    Reply  Thu May 1 13:03:34 2014, Jenne, Update, LSC, MC board pulled for AC coupling 
       Reply  Thu May 1 14:45:44 2014, Jenne, Update, LSC, MC board back in IMG_1394.JPGIMG_1395.JPGIMG_1398.JPGIMG_1402.JPG
    Reply  Thu May 1 16:41:35 2014, ericq, Update, LSC, Yarm locking with CM board AOsignsSame.pdfAOsignsOpposite.pdfloopModeling.m
       Reply  Thu May 1 17:00:05 2014, rana, Update, LSC, Yarm locking with CM board 
Message ID: 9894     Entry time: Thu May 1 17:00:05 2014     In reply to: 9893
Author: rana 
Type: Update 
Category: LSC 
Subject: Yarm locking with CM board 

 I think that's about halfway there. Since this needs to be a precise comparison, we cannot use so many approximations.

We've got to include the digital AA and AI filters as well as the true, measured, time delay in the system. Also the measured/fitted TF of the CM board with the 79:1.6k filter engaged. We want an overall phase accuracy between Jenne's measured TF from last night and this model (i.e. on the same plot with the residual plotted).

Is there a cavity pole in the model? Should be at ~1.6 kHz.

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