The first noisemon board was installed at the ETMY station. It was a prototype board that we brought to LLO and installed there since then. I checked the data today (11/14) and its LL channels is not working.

I checked the time series in the attachment 2 and 3. There are some problem causing the circuit to saturate.

I checked the drive signal below 10Hz in attachment 4. The drive signals across all channels are the same.