LIGO Document T1700077-v1

Timing Witness Signals Indicate Trustworthy Timing for Candidate G274296

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T - Technical notes
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As an extra precaution, we examined the timing witness signals to ensure that the aLIGO datastreamís timing was perfect around G274296, observed at 1171346771= Fri Feb 17 06:05:53 UTC 2017. We found that the DuoTone witness indicated excellent timing performance on the sub-microsecond level and the IRIG-B signals indicated second-precision absolute timestamp decoding.

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