Daniel, Sheila
We caused two locklosses trying to replicate the measurement of the ratio of carrier and sideband powers (https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=48595) at 2W. This should have been a quick check but wasn't because of the locklosses.
We got some time with the 9 MHz modulation depth increased and decreased before loosing lock: normally we run amplifier at 23 dBm while acquiring, we had the modulation depth increased to 25.2 dBm at 20:32:44 UTC July 16th and at 22.1dBm at 20:33:33 UTC before we lost lock.
We used the same script to change the modulation depth in full lock which scales all the appropriate gains, so I am not sure why we lost lock.