Jennie W, Fil C, Marc P,

To hopefully fix the intermittent noise on the SPI optical lever QPDs (see alog #91813), Marc and I pulled the ground pin (13) at the input to TIA chassis variant 2 in SUS-R3 rack and variant 1 in SUS-R2 rack, respectively. When the RCG upgrade is over I will run some dark noise measurements to check this noise is gone.