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Entry  Fri Jan 22 11:33:20 2016, gautam, Update, Green Locking, AUX-X AM/PM investigations AUX_X_AM.pdfAUX_X_RIN.pdfNE_Mephisto.png
    Reply  Fri Jan 22 13:33:37 2016, ericq, Update, Green Locking, AUX-X AM/PM investigations 
       Reply  Fri Jan 22 17:22:06 2016, gautam, Update, Green Locking, AUX-X AM/PM investigations AM_response.pdfNE_investigations.pdf
          Reply  Fri Jan 22 18:46:03 2016, rana, Update, Green Locking, AUX-X AM/PM investigations 
Message ID: 11947     Entry time: Fri Jan 22 18:46:03 2016     In reply to: 11946
Author: rana 
Type: Update 
Category: Green Locking 
Subject: AUX-X AM/PM investigations 

The PDA photodetectors are DC coupled, so you cannot use them to go directly into the analyzer. Must use the DC block so that you can reduce the input attenuation on the B channel and then lower the drive amplitude.

Good policy for TF measurements: drive as softly as you can and still measure in a reasonable amount of time, but no softer than that.

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