40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  SUS Lab eLog  Not logged in ELOG logo
Message ID: 1786     Entry time: Fri Feb 15 18:38:00 2019
Author: rana 
Type: Noise Hunting 
Category: Electronics 
Subject: NoiseMon nonlinearity? 

Before making a wide deployment, we should also test the latest noisemon circuit for downconversion.

  1. Measure the noise output with no DAC signal
  2. Measure the noise output with 0.1x the reference DAC signal (low noise ETM drive)
  3. Drive a line at high frequency in addition to the reference signal
  4. adjust the ampltiudes of the high frequency drive and the reference signal independently and look at how the 20-100 Hz noise changes.
ELOG V3.1.3-