Inc Sound Module Decoder - Manual

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for specific decoders which include installation examples are also available

on our web site. Our website has decoder installation videos to guide you and

your local dealer can show you examples of decoders and help you determine

the best one to use for your installation.

For installations in small spaces, Z and N scale decoders are rated at 1 amp or

more and will work fine in HO scale locomotives.

The Digitrax Tech Support Depot at www.digitrax.com/support, has links to

application notes and videos for installations in many different locomotives.

3.3.4 Decoder Interfaces for Installation

Each locomotive has its own set of issues surrounding installation. Current

production locomotives often have easy installation interfaces that allow you

to simply plug in a decoder or replace a circuit board inside the loco. Other

locomotives, particularly really small ones, may require a soldered installation.

Sound decoders are a challenge because of speaker & hold up capacitor instal-

lation requirements in addition to the decoder itself.

3.3.4.1 Plug ‘N Play and Board Replacement Interfaces

Many locomotives come from the factory with provisions for decoder instal-

lation. Some locomotives come with the decoder pre-installed. Manufacturers

use several terms for these locos. Be sure to read the box and examine the loco

so you know what you are getting. Some “plug ‘n play/board replacement”

decoders require special installation steps. Be sure to read the instructions.

DCC Ready Locomotives: These locomotives are usually equipped with a

DCC medium socket, though you may find some locos where this terminology

means that there is room for a decoder. Be sure to check this before purchas-

ing the locomotive

DCC Medium Socket: This diagram shows the DCC medium plug that is

widely used with HO locomotives that come from the manufacturer with the

DCC medium socket. The color code refers to the wire colors on a DCC wire

harness. To install a decoder in a loco with a DCC medium socket, remove the

dummy plug that comes with the locomotive and insert a decoder with a DCC

medium plug in the socket.

Black Not Used Yellow Orange

RedBlueWhiteGray