Fil, Dave:

Normally all the HWWDs show some activity to indicate they are operational, but ETMX has been quiet for just over 3 months. To verify it is still operational before we go into the holiday season, Fil went to EX and unplugged one of the satellite amp monitor cables from the front of the HWWD unit. It immediately started its 20 minute countdown. The cable was reattached after only a few seconds.

ndscope 30 day trend (https://lhocds.ligo-wa.caltech.edu/exports/dave/hwwd_30_day.png) in attachment shows the single ETMX data point from yesterday.