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Entry  Mon Oct 19 16:20:52 2015, ericq, Update, LSC, Green beatnote couplers installed 
    Reply  Mon Oct 26 18:59:25 2015, gautam, Update, LSC, Green beatnote couplers installed 
Message ID: 11700     Entry time: Mon Oct 19 16:20:52 2015     Reply to this: 11714
Author: ericq 
Type: Update 
Category: LSC 
Subject: Green beatnote couplers installed 

Last Friday, I installed some RF couplers on the green BBPDs' outputs, and sent them over to Gautam's frequency divider module. At first I tried 20dB couplers, but it seemed like not enough power was reaching the dividers to produce a good output. I could only find one 10dB coupler, and I stuck that on the X BBPD. With that, I could see some real signals come into the digital system.

I don't think it should be a problem to leave the couplers there during other activities.

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