Reports until 00:32, Wednesday 05 March 2014
H1 ISC
sheila.dwyer@LIGO.ORG - posted 00:32, Wednesday 05 March 2014 - last comment - 12:56, Wednesday 05 March 2014(10514)
ETMX ISI

We had a lot of trouble early in the evening isolating ETMX, we kept tripping the watchdog on stage 2.  We tried reseting the CPS offsets, and eventually were able to get it to isolate with Tcrappy and level 2 controllers, but the motion was rather large (~ten fringes per second).  We left stage 2 with damping only. 

Comments related to this report
jeffrey.kissel@LIGO.ORG - 09:02, Wednesday 05 March 2014 (10518)SEI
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Were you sending any particularly large locking transients to the ETM, to the top mass in particular? What did the input motion look like? Did it trip on actuators, or some sensor?
sheila.dwyer@LIGO.ORG - 12:56, Wednesday 05 March 2014 (10549)
Link

We haven't been using feedback to HEPI, and turned off the feedback to the top mass when we started having trouble.  there were acutator trips, GS13 trips, and T240 trips (I frogot to disable the T240 watchdog once).  

Also, at one point last night I turned on the sensor correction with the blend filters still on Start, this was obviously bad although nothing tripped.  Maybe this is only intended to be used with T240s, or only with Tcrappy blends.