filiberto.clara@LIGO.ORG - posted 13:54, Tuesday 08 August 2023 (72069)
HAM7 CPS Timing Cable
A CPS timing cable was pulled from the CPS Fanout Chassis (Rack SUS-R4) to HAM7. Wiring diagram D1400363 calls for a standard male to male DB9, twisted pair, shielded cable. Used the existing HAM5 timing cable to verify pinout. When backshell was removed on the fanout chassis side, noticed resistors soldered across pins 1&6 and pins 2&7. Bill of materials calls out for 100 ohm resistors. Cabling for HAM5/HAM7 was not changed. New cable will be properly terminated next week.