I measured following transfer function (All TF measurement were done by injecting signals from TEST of TTFSS RF circuit).
1. TEST to common OUT1 and  common OUT2,  and common OUT1 to common OUT2.
2. Common OUT2 to FAST out with common gain of 0 dB and FAST gain of 0 dB on the medm screen.
3. Common OUT2 to FAST out with common gain of 2.3 dB and FAST gain of 8.3 dB on the medm screen.
4. Common OUT2 to Pomona box out connected to HV amp input  with splitting to BNC-T (fig1). the gain setting for the measurement is same as 3.

All data are stored on kagra dropbox (Apps/Liquid Instruments/) with the file name starting from "TF_TTFSS".
Detail will besummarized after finishing comparison between theory and measured data.