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Entry  Thu Oct 24 04:13:15 2013, Jenne, Update, LSC, PRMI + 2 ALS arms 
    Reply  Thu Oct 24 08:04:54 2013, Steve, Update, LSC, PRMI + 2 ALS arms 
    Reply  Thu Oct 24 09:08:27 2013, jamie., Update, LSC, PRMI + 2 ALS arms 
    Reply  Thu Oct 24 14:14:18 2013, rana, Update, LSC, PRMI + 2 ALS arms 
       Reply  Thu Oct 24 15:19:58 2013, Koji, Update, LSC, PRMI + 2 ALS arms 
    Reply  Thu Oct 24 23:25:37 2013, Jenne, Update, LSC, End transmission triggering 
       Reply  Tue Nov 5 16:47:09 2013, Jenne, Update, LSC, End transmission QPDs 
    Reply  Fri Oct 25 04:03:40 2013, Masayuki, Update, LSC, 'scope and spectrum analyser for REFL165 
       Reply  Fri Oct 25 21:36:51 2013, Masayuki, Update, LSC, 'scope and spectrum analyser for REFL165 
          Reply  Mon Oct 28 14:24:01 2013, Masayuki, Update, LSC, 'scope and spectrum analyser for REFL165 
             Reply  Mon Oct 28 18:57:27 2013, Masayuki, HowTo, LSC, read 'scope and spectrum analyser datas 
Message ID: 9345     Entry time: Tue Nov 5 16:47:09 2013     In reply to: 9286
Author: Jenne 
Type: Update 
Category: LSC 
Subject: End transmission QPDs 

I think Steve is trying to align the end transmission QPDs, since the arms are locked nicely right now.  I noticed that the QPDX pitch and yaw signals were digital zeros.  A quick look determined that the QPDX matrix to go from 4 quadrants to 3 degrees of freedom had been filled in for the POS row, but not pitch and yaw.  So, I copied the QPDY matrix over to QPDX (so the ordering of the rows and columns is assumed to be the same). 

Hopefully this will get us close to centered, but I suppose we ought to check really which quadrant is which, by shining a laser pointer at each quad at each end.

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