marc.pirello@LIGO.ORG - posted 16:23, Monday 09 April 2018 - last comment - 17:57, Tuesday 24 April 2018(41349)
End Y Timing Comparator Modification Complete
Taking advantage of the pump down we retrieved, modified, and reinstalled the timing comparator at end Y. The following modifications were applied to unit S1201222:
LIGO-E1800008: ECR: Timing Comparator replace 5V regulator with seperate DC Power board
Reinstalled proper Timing Comparator S1107952 into CER and returned spare to the rack. *Spare still requires upgrade
Pulled, Upgraded and Reinstalled MSR Timing Comparator S1201224.
No front ends were harmed in this operation.
Three Timing Comparators done, one remains unmodified at X end.