SudarshanK, RickS

Now that "DeltaL_Ext" is calibrated, we can compare the estimated Pcal line heights (in meters) using the calibrated Pcal Rx and Tx PD signals with the DeltaL_Ext calibrated line heights.

There are known errors in DeltaL_Ext arising from delays, filter pre-warping, OMC DCPD poles, etc. that are not accounted for in this quick look.

The ratios between the Pcal calibrations and the DeltaL_Ext calibration for the 3001.3 Hz line (injectetd at Xend) and the 1083.7 Hz line (injected at Yend) are given in the table below.

So with a quick look the DeltaL_Ext calibration seems to agree with Pcal at the ~10% level at 3 kHz.

DTT plot attached below.