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Message ID: 1951     Entry time: Mon Oct 16 20:16:15 2017
Author: Craig, awade 
Type: DailyProgress 
Category: BEAT 
Subject: Precav Beatnote Dirty Spectra Facts 

Total power on precav PD - 643 µW

South power on precav PD - 173 µW

North Power on precav PD - 470 µW

When both PZT paths for the FSS boxes are plugged in, we see 5 MHz sidebands on our transmission beatnote.  When either path is unplugged from the laser PZT, the 5 MHz sidebands go away.  This is weird because the PZT shouldn't be that fast...

We also have sidebands around 430 kHz.  We opened the loop to the lasers and still see this modulation on DC...

Tried grounding all power supplies together to avoid ground loops.  Found out that our negative high voltage supply was shorted to ground.  Spent day making new cords.  Will test tomorrow.

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