Going DCC on a 3-rail layout with TMCC/Legacy in the mix as well is a BAD IDEA, at least IMO. It might be useful to think about the actual environment being considered...
@Don Merz 070317 posted:I am SLOWLY wiring my 16x17 layout(3-rail running DCS and TMCC thru 3 TIUs in super mode with 12 isolated blocks--no Legacy or conventional).