When the ETMX came up after the software upgrade, I attempted to measure the OL values on the OSEMs, which had been installed and left retracted by Betsy yesterday.

I noticed that four channels, R0 F1/F2/F3/SD were behaving oddly. Trending revealed that these channels had gone bad at 00:09 Pacific this morning (see attached). Richard replaced the satellite amp and they came good.