After replacement of the SQZ FSS beatnote chassis this morning, there is a little more RF power on the demod. There is an error message in the beckhoff logic for the TTFSS that was intended to identify times when the noise eater is oscillating.  If the demod RF goes above RFMax the screen shows an error message that flashes extremely quickly (red circle on screenshot attached), the state machine will go back to Acquire, and the FSS servo board common gain will toggle between 17 and 20 dB, which is what causes the SDF to knock us out of observe.

We've increased  RFmax for the demod so this shouldn't happen.