filiberto.clara@LIGO.ORG - posted 15:21, Tuesday 01 March 2022 (61996)
HAM7 Ground Loop Check
HAM7 ground checking complete. E2100504 was used to resolve known in-chamber ground issue for ZM1-ZM5 and FC Top.
FC1 Top - Pin 13 and shield lifted per E2100504
FC1 Top (2nd Chassi) - Pin 13 and shield lifted per E2100504
FC1 Middle - Tested ok
FC1 Bottom - Tested ok
OPO - Tested ok
OFI - Tested ok
ZM1, ZM2, ZM3, ZM4, ZM5 - Pin 13 and shield lifted per E2100504
All cables have been labeled stating pin 13 and shield were lifted inside the connector. The ZM1 and ZM3 dither cables were checked for continuity between each individual pin and ground. Both passed.