DCC CV Decoder
Read a CV back from your decoder and not sure what the number means? Enter the CV and its value — this tool explains it in plain English, and for configuration bytes like CV29 it breaks down every bit that’s switched on.
What it means
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Want to go the other way — pick the behavior you want and get the CVs to program? Use the CV Builder. Terms like CV29, speed steps, and long addressing are explained in the glossary. Values are first-pass guidance — always confirm against your decoder’s manual.