40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
 List  |  Find  |  Login  |  Help 
Entry  Thu Apr 2 04:11:20 2015, ericq, Update, LSC, Not much locking, Xover measurement CARMxOver_Apr3.pngApr2_Xover.xml.zip
    Reply  Thu Apr 2 15:34:34 2015, ericq, Update, LSC, Not much locking, Xover measurement xOverModel.pngloopModel.png
       Reply  Thu Apr 2 17:11:28 2015, ericq, Update, LSC, Not much locking, Xover measurement xOverModel.pngloopModel.png
Message ID: 11196     Entry time: Thu Apr 2 17:11:28 2015     In reply to: 11195
Author: ericq 
Type: Update 
Category: LSC 
Subject: Not much locking, Xover measurement 

Whoops, I implemented the IOP downsampling filters wrong. Once I did that, it looked like just delay mismatch, so I added two more computation cycles for a total of four 16k cycles, which is maybe not so justified... Nevertheless, model and measurement now agree much better. Here are the corrected plots. 

 

Attachment 1: xOverModel.png  208 kB  | Hide | Hide all
xOverModel.png
Attachment 2: loopModel.png  314 kB  | Hide | Hide all
loopModel.png
ELOG V3.1.3-