DCC CV Programming Cheat-Sheet
FREE
HO scale DCC reference: the common CVs modelers actually program, plus a CV29 bit-value table with ready-made settings. Free printable PDF for the bench.
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Details
Programming a decoder means remembering which CV does what — and doing the bit math on CV29 without a chart in front of you. This free one-page reference keeps both at your bench.
One side lists the CVs you actually reach for: address, starting and top voltage, momentum, the mid-curve point, and the read-only manufacturer bytes — each in plain English. The other side breaks down CV29, the configuration register, as a bit-value table: add up the features you want (28/128 speed steps, DC operation, RailCom, long addressing) to get the number to program, with six of the most common combinations already worked out for you.
It also covers short versus long addressing and the factory-reset caution, so you're not guessing. Sound and function mapping live in your decoder's manual — this card is the everyday NMRA foundation that applies to any decoder.
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Specifications
- Standard: NMRA DCC
- Scale: HO (1:87.1)
- Format: Printable PDF (US Letter)
- Covers: CV1-CV29 common set + CV29 bit table
- Includes: 6 ready-made CV29 values
- Price: Free download
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