This reply is spot on. Changing the speed settings on a decoder is DCC 101. When you set up a decoder for the first time (that is, program the loco number), MRC systems ask you to also enter numbers for start voltage, max voltage, and mid-range. You can bypass these inputs if you want to, but since they're included in the basic set-up process, it's pretty obvious that those CV's are essential basic knowledge.OP wrote:
"I am not experienced enough yet to start changing advanced parameters."
There's not much to this -- at least at a basic level. (at least on the Roco z21 system that I use)
One thing you should do is before you change a particular CV setting, to write down what the current one is. That way, makes it much easier to "go back".
If they conform voluntarily to NMRA standards, there are set voltages that each DCC system should apply to its outputs...BASED ON the scale. Different scales have different needs due to mass and resistances, so their voltages vary commensurately.I just purchased a NCE Powercab and a couple of Dcc locomotives. They run much slower on Dcc than dc. Is there any way to turn up the speed ? I have HO scale.