Hooking up DCS

Put track 1 on fixed 1, put track 2 on fixed 2. Plug a Z500 brick into the AUX power port and go. 

Thats all thats to it. TIU has 4 internal channels that will independently run off 4 different power sources.

OK, but we have two independent loops, with the two fixed outputs, but how will we run them between eachother with the remote etc.?

You don't need 2 TIUs. The TIU's channels are isolated. You can use Fixed channel 1 for loop 1 and fixed channel 2 for loop 2. Power them from your Z4000 as you describe. You don't need to use super TIU mode.

My setup is pretty close to yours with two isolated loops and 2 TIU channels. Main difference is power, I am using 2 PH-180s, one per channel. I am using a Z500 (from an MTH set) to power my TIU through it's Aux power port.

OK, but can I run between these two isolated loops via my #8 crossover??

Yes, I don't have a Ross crossover, but I have crossovers between my loops and go back and forth between loops all the time. Not a problem.

The only time you could have a problem is when using two separate transformers for each loop. In that case both would have to be in phase. Usually a more common problem with older transformers having non-polarized plugs, like the old ZWs and other postwar stuff. You should not have a problem using two handles of a Z4000 as they will already be in phase.

Jeff B. Haertlein posted:

OK, but can I run between these two isolated loops via my #8 crossover??

Sure. Just put 18v on both loops and the train will run right through. The inputs are separate, the signal is laid over all the outputs, so the train will pick it up seamlessly. 

I recommend this book. It will answer many questions.

https://mthtrains.com/60-1386

I'll second the book recommendation. 

Jeff, you should contact Ross to make sure you have the double crossover wired correctly so you have two independent tracks/loops. If they are, then the advice above of using two channels on one TIU will work fine. If you power separately, then any 2 channels will work. 

Is there a reason you want to run the TIU in "passive" mode (transformer only connected to output side?

Do not want to worry about frying the box for some screwy reason. This way the power doesn't go through the TIU

What are you using for the TIU auxilary power input besides a Z-750 brick?