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Reports until 09:05, Friday 13 February 2015
H1 SYS (DetChar, SYS)
duncan.macleod@LIGO.ORG - posted 09:05, Friday 13 February 2015 - last comment - 13:47, Friday 13 February 2015(16711)
H1 lockloss not caught by ISC_LOCK guardian?

At GPS time 1107854779 [2015-02-13 09:26:03 UTC], H1 appeared to unlock but the ISC_LOCK guardian state didn't change. The attached plot shows the X-arm power and the guardian state to confirm (hopefully).

At the time of writing the guardian is still reporting 'DC_READOUT' as the current state, while there is no circulating power in the arms. The other guardian nodes (e.g. ISC_DRMI) did respond to the lockloss, however, so I presume it's just an oversight in the ISC_LOCK DC_READOUT state definition to check that the other guardians are still nominal, or that the arms are actually locked.

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sheila.dwyer@LIGO.ORG - 13:47, Friday 13 February 2015 (16723)

This should be fixed now.  

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