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Entry  Tue May 14 01:56:20 2013, Jenne, Update, Green Locking, Xend Green tweaked 
    Reply  Tue May 14 02:19:13 2013, Koji, Update, Green Locking, Xend Green tweaked 
    Reply  Tue May 21 18:18:23 2013, Manasa, Update, Green Locking, Xend Green aligned 
       Reply  Tue May 21 23:29:57 2013, Manasa, Update, Green Locking, Xend Green aligned 
          Reply  Tue May 28 19:35:17 2013, Manasa, Update, Green Locking, Still searching for the X green beat note 
             Reply  Thu May 30 01:02:41 2013, Manasa, Update, Green Locking, Found it! IMG_0598.JPGIMG_0599.JPG
                Reply  Mon Jun 3 21:09:55 2013, Manasa, Update, Green Locking, X green beatnote through beatbox IMG_0608.JPG
                   Reply  Tue Jun 11 22:16:56 2013, Manasa, Summary, Green Locking, ALS for X arm 
                      Reply  Thu Jun 13 22:31:12 2013, Manasa, Summary, Green Locking, X arm ALS IMG_0659.JPGALS_stabilized_13June2013.png
                         Reply  Fri Jun 14 07:06:19 2013, Koji, Summary, Green Locking, X arm ALS 
Message ID: 8651     Entry time: Tue May 28 19:35:17 2013     In reply to: 8610     Reply to this: 8653
Author: Manasa 
Type: Update 
Category: Green Locking 
Subject: Still searching for the X green beat note 

Procedure

1. Aligned X-arm to IR.
2. Aligned green to the X-arm.
3. PSL green and X-green aligned to the X-green beat PD.
4. Scanned X-green laser temperature (sweep X slow servo offset through the whole range)

I did not succeed in finding the beat note; but noticed something I cannot explain.
With green very stably aligned to the X-arm, GTRX reads 3000 counts. But when the laser temperature is changed and the green unlocks and locks to the X-arm, it locks with GTRX counts over 5000. GTRX stays at 5000 counts as long as the temperature is changing but settles down to 3000 (over a time lapse of tens of seconds) when let to stay at any specific temperature.

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