FranciscoL, RickS

On April 4, 2024 we used DTT to measure the amplitudes of the Pcal lines used in the Pcal X/Y calibration comparison in both the Pcal end station Rx sensor outputs and the DARM_ERR signal.  The attached plots shows the peaks in the spectra measured with 0.001 Hz requested BW, 50% overlap, 10 averages during a long lock stretch.  The second image is a page from Francisco's lab book.

The SNRs for the lines from the Pcal Rx sensors is about 5e-5 and

the SNRs of the lines in the DARM_ERR signal are about 1350.