V. Sandberg & R. McCarthy
The SUS-TMSX OSEM Satellite Box was driving a ~2kHz oscillation on its DC power line again. (See https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=20428) This time we replaced the satellite box. Verified that H1:SUS-TMSX_M1_OSEMINF_RT_IN1 and H1:SUS-TMSX_M1_OSEMINF_SD_IN1 were behaving themselves. Work was done during the interval 18:00 - 18:45 UTC (11:00am - 11:45am PDT).
Apologie: I failed to follow my own rules and neglected to notify the operator on duty before we left and changed out the satellite box at End X. Shame and humiliation duly noted. :-( Fortunately, no damage was done.
The S number and S/N for the "old" satellite box for SUS-TMSX_M1_OSEM SD and RT channels are:
S-number bar code S1100176
S/N 3202-022
The identifiers for the new box will be obtained at a future oportunistic entry to the EX electronics racks area.