Jeff Kissel will make the log entry on the electric field meter. The calibration of the field meter is Volts/(Volts/meter) =2.1 x 10^-2 flat from 10Hz to 20KHz.

The confusing results that Betsy, Sheila, Jeff and I got this afternoon may be due to the vibration and acoustic sensitivity of the electric field meter. Suggest further measurements with the worst acoustic and vibration sources turned off. Also the meter has a
common mode sensitivity to the battery voltage. I never connected the battery box to the neutral (white terminal). It would be good to connect the battery box itself to the lead coming from the field meter that attaches at the white terminal with a clip lead. If there is not a significant change in the low frequency noise, suggest turning off the ISI and other instrumentation in the chamber. That is if you have the time to further investigate where the low frequency noise originates.