J. Kissel (in concurrence with others in the control room)

Upon investigating parameters for the DARM Loop Model, I found that the ETMY ESD Bias was ON. While some previous noise investigations have indicated that the bias doesn't impact the noise (e.g. LHO aLOG 45113), it seems bad practice (due to general charging concerns) to leave this on. Thus, I've turned OFF the ETMY ESD bias, and captured that in the SDF system (in the "safe" snap) so it sticks. Note that the HV driver is still *on*, we're just not requesting it to drive any voltage. The binary switches are in the configuration where the the low-voltage (LV) output is selected, the high-voltage input to the LV driver is disconnected, and the LV driver's low-pass filter is engaged.

Also -- while I was in there, I unmonitored the distracting "inputs to the violin mode damping filters" for all 4 quads which are controlled by guardian. There are 40 of them, so they pollute the check against the safe.snap and OBSERVE.snap SDF file when looking for other problems.