I turned on the ETMY RH, requesting 630mA from each ring heater segment. This equates to roughly 30W of power input into the ETM. I'm monitoring the Hartmann sensor signal to check for a response.

The ITMY YAW was set to zero (from 717.81 counts) to keep the cavity from resonating or flashing during this measurement.

The time constant of the ring heater is several hours, so we will run this at least until noon.