gunrunnerjohn posted:I have never seen this request before, and I don't even know how you modify the TIU for full voltage all the time from the variable channels. I've never really wanted to do this, so it's never come up.
This is a requirement insisted upon by a couple of individuals in my club (San Diego 3 Railers), who maintain the wiring on the layout. I can't find any information about this either. That's why I'm asking. I can imagine one would wire a jumper around the component that varies the voltage in the channel on the TIU's mainboard , but this sounds useless if you only run fixed voltage brick transformers on DCS to begin with. The only thing I can figure is that their current configuration allows use of either power bricks or a Z4K transformer to run DCS. And to make it more idiot proof, they hard-wired the variable voltage channel to fixed so that changing the voltage on the Z4K won't change the operational mode of the variable channel.
Actually, the more I'm reading up on this, and the answers I'm getting here, make me think this "requirement" just a lame excuse for not doing anything, like replacing a 13 year old TIU that's probably malfunctioning. 
