Product Support for: Mobile Decoders -> 1 Amp Wired Mobile Decoder, 4 Functions (DN142)

The DN142 comes from the factory with BACK EMF SPEED STABILIZATION (BEMF) turned off. Follow this procedure to turn it on and to adjust it. Later generations of Digitrax mobile decoders do not require this procedure. Activation: To activate the BEMF feature, change CV57 to a value of 06. This will give good performance with most brands of locomotives. If the locomotive surges while using BEMF use a lower value for CV56. It may also be necessary to adjust CV's 55, 56, & 57 to get the motor performance desired for your particular locomotive. Adjustment: 1. Program CV57 (Droop control) ...

Many thanks to Bob Dattore for this application note!This app note details using a DN142 decoder for the installation.  This decoder is no longer in production but the following decoders would work as well:  DN135D, DN163, DZ123, DZ125, DZ143.  Any decoder that is small enough to fit could be used.The Problem:  Atlas RS1's (and RS3's & RSD4/5's) are hard to install Digitrax decoders in. There is no easy drop-in or light board replacement with back-emf capability.I have installed several Atlas Dual Mode decoders in these popular hard to fit narrow, low hood diesels with ease, by replacing the original light ...

Decoders with FX function features have 4 user configurable, independent special effects generators. All current production Digitrax Decoders use FX3 functions so this article is not applicapable to these decoders. CAUTION: Decoders with FX3 function generators use different CVs to control the decoder outputs. All current production Digitrax decoders use FX3 function CVs. Before using these CVs to program your decoders make sure that they are FX and not FX3 decoders.The Real FX effects are set up by programming CV values as described below.F1/F2 NOTE: If using DH142, DN142, DN141K2, DN149K2 series decoder, when F1 is set up for FX, ...