40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  PSL  Not logged in ELOG logo
Message ID: 258     Entry time: Fri Aug 6 11:51:47 2010
Author: Megan 
Type: DailyProgress 
Subject: VCO Measurements 

Yesterday we set up channels to record the noise of the locked signal generators. After a while playing with channels and filters and everything, the results are that the missing factor might be somewhere in the calibration of the data in 40m because this data fits where we would expect it to, slightly above the electronic noise converted to phase noise at low frequencies and much higher at high frequencies.

I tried to check the calibration in 40m this morning, but Jenna had the rubidium clocks hooked up and was collecting data with that, but I might be able to go back this afternoon and get something to see if it's in the calibration of rad/count.

Attachment 1: NoiseComparison.png  26 kB  | Hide | Hide all
ELOG V3.1.3-