Trying to get a "new" Atlas Trainman RSD4/5 with TMCC working via TMCC. I have the Trainmaster Command Base (6-12911) powered (green LED is on). Trainmaster Command Base is hooked to the TIU via the MTH cable (the newer one, not that it makes any difference), both ends are connected to the correct devices (TIU end to the TIU, etc.). Wire from the "U" terminal on the Trainmaster Command Base has been hooked to the black output terminal on Fixed Output 1 (and also directly to the terminal on the outside track after that didn't work).
Train is on the track, with the program/run switch in the "program" position. When I apply power, train attempts to barrel down the track as in conventional mode with the throttle wide open. It's obviously NOT seeing a TMCC command signal. It's a test track about 6' long, so there shouldn't be an issue with the signal getting there. Tried the same thing with a Lionel TMCC Camelback, same results.
Am I missing something here? Is there some way to test the command signal output of the Trainmaster Command Base (with equipment the average hobbyist would have, ie., digital multimeter. I'm fresh out of o-scopes)? It (the Trainmaster Command Base) supposedly worked when I got it (the other stuff it came with did), but I've never verified that it's working before. Everything else works fine in either conventional, or PS2 stuff in DCS. Atlas engine works fine conventionally.