marc.pirello@LIGO.ORG - posted 13:25, Friday 02 February 2018 - last comment - 11:24, Monday 05 February 2018(40389)
Corner 4 & Corner 6 Channels Repaired
Elizabeth C., Marc P.
Taking advantage of a one hour window in operation we repaired the Corner 4 and Corner 6 squeezer readbacks per WP7309.
In Corner 4 we replaced module 19 on the left rail with a new EL3104 (4 channel differential ADC)
In Corner 6 we replaced module 5 on the right rail with a new EL1124 (4 channel digital input)
Both of the replaced modules appear to be working.
ASC-AS_B_RF42_DEMOD_LOMONCHANNLE_3/4 is fixed.
H1:ISC-RF_C_AMP42M4_POWEROK still reads zero. Maybe a cabling problem?
Fil C., Marc P.
It was a indeed an internal wiring problem. We moved the wires to the correct positions on the beckhoff terminal and verified OK1 through OK12 are working as intended.