Similar to ETMY in that it works and has survived.
The attached trends shows six hours covering maintenance. There are no status or control channels available for ETMX, yet.
The lower trace(H1:ISI-GND_BRS_ETMX_DAMPCTRLMON) is the velocity (sqrt angular velocity) and damping is automatically engaged when this signal exceeds 4200. The turn off is more involved than BRSY but when this DAMPCTRLMON signal stays between 4000 and 4200 units, the damping is turned off after 15 minutes. Again, it looks like it works well and has survived maintenance day abuse. Nice.