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Entry  Fri Dec 12 04:33:49 2014, Jenne, Update, ASC, ASS retuned 
    Reply  Wed Dec 17 01:51:44 2014, rana, jenne, Update, ASC, ASS retuned ASSconfig_141217_0205.png
       Reply  Wed Dec 17 19:04:12 2014, jenne, Update, ASC, ASS retuned 
          Reply  Wed Dec 17 19:31:55 2014, Koji, Update, ASC, ASS retuned 
             Reply  Tue Jan 27 21:33:39 2015, Koji, Update, ASC, ASS retuned 
Message ID: 10812     Entry time: Wed Dec 17 19:04:12 2014     In reply to: 10807     Reply to this: 10813
Author: jenne 
Type: Update 
Category: ASC 
Subject: ASS retuned 

I made the Xarm follow the new (old) topology of Length -> test masses, and Trans -> input pointing.

It takes a really long time to converge (2+ min), since the input pointing loops actuate on the BS, which has an optical lever, which is slow.  So, everything has to be super duper slow for the input pointing to be fast relative to the test mass motion.

Also, between last night and this afternoon, I moved the green ASX stuff from a long list of ezca commands to a burt file, so turning it on is much faster now.  Also, I chose new frequencies to avoid intermodulation issues, set the lockin demodulation phases, and tuned all 4 loops.  So, now the green ASX should work for all 4 mirrors, no hand tuning required.  While I was working on it, I also removed the band pass filters, and made the low pass filters the same as we are using for the IR ASS.  The servos converge in about 30 seconds.

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