Today we changed the frequency of the AOM in the fiber distribution chassis to 160 MHz by sending an 80 MHz RF signal from the CER to the doubler. With the change of the PSL pick-off, the TTFFS beat note is now 160 MHz sharp, when locked. It won't change with the PSL/IMC AOM frequency anymore.
We updated the VCO nominal frequency, set the VCO frequency servo to internal and disabled the VCO feed forward.