@Michael Cimba 040217 posted:GRJ: If I setup a test track, directly connected to the fixed 1 output, can I leave all my other layout wiring connected to the TIU or should I disconnect? Is the DC power source to power the TIU through the auxiliary input or supply track power to the test track through fixed 1?
I currently have a Z750 powering the TIU through the auxiliary power input and (2) Z4000 supplying track power to all 4 TIU inputs. Thanks.
Yep, all the other layout wires to other channels will have no effect. You just want the TIU output channel going direct to a test track. You also don't want any other engines powered that are connected to any TIU channel, best to simply turn off all the other channel power inputs.