I got the LLO test mass charge measuring script running here at LHO. There was an NDS error initially that Dave Barker magically made go away. Otherwise, the script required no modification other than some missing commas in the bias voltage definition. There is a timing error that seems to pop up at pseudo random times. In these cases, the excitation appears shifted from the oplev response by 9 sec. See UR_timing_err.pdf.  Of all the ESD quadrants it most often occurs on the UR, though I saw it once on upper left. Not sure if it has something to do with the settings of the script. The way it is now, the timing error has appeared in 3 to 5 out of 20 measurements in each run. I have run the script in the current configuration 7 times.

In any case, I was able to get a 2 hour trend of the ESD charge. See ETMY_Charge_Trend_9Jan2015.pdf. The charge wanders a bit, but has some consistency.

The charge measuring script is:

.../SusSVN/sus/trunk/QUAD/Common/Scripts/ESD_UL_LL_UR_LR_charge_07-H1.py

The analysis script, which I am still updating for LHO is:

...SusSVN/sus/trunk/QUAD/Common/Scripts/ESD_UL_LL_UR_LR_analysis07_BrettTest.m