This sounds like something that can be corrected through programming of CVs.
Atlas doesn't make decoders; it was made by Lenz of Germany of possibly TCS or NCE. Atlas' web site is no help at all because they don't show that decoder as being in stock and there is no documentation offered for it.
If you can find a part number on the decoder that can be traced to the manufacturer of it, you may be able to find programming instructions if none came with the decoder.
The Atlas decoder documentation that comes with their models is pretty worthless from what I have seen, but sometimes there is a manufacturer's identity on the decoder.
Traintown:
You can try reading CV 8. If it's an NMRA compliant decoder this CV gives the manufacturer's ID number and you can find the manufacturer from the table included here: http://www.nmra.org/standards/DCC/mfgnumbers.html.
Joe
Although I have several Atlas locos, I'm not familiar with the SD35. Does it come with with the dual-mode, four function decoder?
If so, does this diagram help?
How about this documentation?
JoeinPAYou can try reading CV 8. If it's an NMRA compliant decoder this CV gives the manufacturer's ID number and you can find the manufacturer from the table included here: http://www.nmra.org/standards/DCC/mfgnumbers.html.
Joe.
Most of the DCC on board decoders will have the locomotives manufacture ID. If Atlas put the decoder in it it will come up with 127 in CV8. I have read CV8 in BLI locomotives with QSI decoders in as 38. On early QSI decoders the code would change to the QSI code with an upgrade chip change. Just about all of the on board decoders are a custom deal between loco manufactures and decoder makers. Aftermarket decoders will always have the decoder manufactures code.
Pete
I pray every day I break even, Cause I can really use the money!
I started with nothing and still have most of it left!
Pete:
Thanks for the clarification.