richard.savage@LIGO.ORG - posted 13:14, Tuesday 12 November 2019 - last comment - 08:54, Tuesday 10 December 2019(53195)
Update to Pcal
The "Phase" of the OSC9 line for the PCALY excitation at 1153.1 Hz was changed from -15 deg to 0 deg.
The amplitude of the 1153.1 line for PCALX was changed from 5000 to 5007.
The 5007 ct amplitude was determined by looking at the ratio of the Xend to Yend Pcal Rx signals and adjusting the amplitude to bring it clost to 1.
(note that the "Cos Ampl" field was bland for this excitation at Xend; it was updated to match the "Sin Ampl" value.
WIth 0.1 Hz BW and 50 averages, the X/Y ratio of the line amplitudes at 1153.12 Hz was (1.00002236, 1.00005868, 0.999899413) for three consecutive 50-avg measurements.
The original configuration of these lines can be found in entry 51915 in this log from Sept. 11, 2019.
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