patrick.thomas@LIGO.ORG - posted 20:52, Monday 24 August 2015 - last comment - 21:45, Monday 24 August 2015(20839)
ETMX UIM driver tripped
Jeff K. reports that the ETMX UIM driver has tripped. Cheryl reported this happening last Sunday: alog 20808 From plotting the L1 OSEM monitor signals it appears that it tripped on Aug 25 2015 03:08:25 UTC. (plot attached)
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Tripped again, investigating.
Time of second trip: Aug 25 2015 03:55:50 UTC Attached is a plot of the L1 OSEM monitors along with the L1 master out drive channels at the time of the second trip. It appears from this that the trip is not caused by the drive to the L1 coils. The power switch for this coil driver was replaced on August 4: alog 20222
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Tripped again at Aug 25 2015 04:31:16 UTC.