I have unplugged POXDC and POYDC from their whitening inputs. They have labels on them which whitening channel they belong to (POY=5, POX=6) on the DCPD whitening board.
TT3_LR's DAC output is Tee-ed, going to the POYDC input and also to an SR560 near the Marconi.
TT4_LR's DAC output is Tee-ed, going to the POXDC input and also to the CM board's ExcB input. |