[awade, Craig]

Craig retook the transfer functions of both north and south boards today with 7 mVrms (-30 dBm) input signal into TP1. I've plotted and they are attached below. 

There is a sign flip in phase in the north path stage 5 due to the flipper switch being in the opposite state.  Things seem to aggree except for the EOM final stage 3.  We need to check the liso model here and also the actual components on the board.  As noted by Craig in PSL:1956, some of the capacitors in the zeros of the main op amp stages are higher value than in the schematic (twice as much).  This pushes the frequency down, we actually probably want to go in the oposite direction. We also can't see the EOM path notch in the liso model. That is a red flag.

Fil file and plots attached. The rest is commited into the ctn_noisebudget and ctn_labdata gitlabs.