The RMS calculated from suppressed LO phase noise yields 20 mrad. Daniel thinks there's something wrong with the measured transfer function so it couldn't really be well fitted with known parameters. Since fast path out of LO common mode board goes to TTFSS, it could be that the funny behavior of the TTFSS is to blame. The cross over frequency between fast and slow path is 1kHz. 220 Ohm that we doodly clipped last time was also taken off.

The measurement was taken after PFD board and TTFSS modification (alog44490)