Inc Sound Module Decoder - Manual

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3.12 Final Decoder Test

Once the decoder is installed, you are ready for the test track. For decoders

with FX

functions, if you are able to control the loco’s lights but the motor

will not run, this is also an indication of a motor short circuit that must be cor-

rected.

1. Place your Digitrax decoder equipped locomotive on the programming

track and try to read or write to the decoder. If you get a program-

ming error, check your wiring. This allows you to test the decoder

in a low current environment to avoid damage due to incorrect wir-

ing or installation.

2. Run your Digitrax decoder equipped locomotive on a regular DC

track with the positive polarity connected to the right side wheels.

The Digitrax decoder in the locomotive will recognize that it is

not receiving DCC commands and automatically convert to analog

mode, this is called analog mode conversion.

3. Using a DC power pack, move the loco in the forward direction. If

the loco moves in reverse, the input power feeds to the decoder are

reversed. Power down, swap the decoder power input connections

(red & black leads) and try again.

4. Next, run the decoder equipped loco with your Digitrax system.

Follow the instructions in your Digitrax Starter Set manual to

select and run the locomotive on address 03. Operate any functions

installed to be sure they can be turned on and off. Since you have

not programmed the decoder yet, the decoder will use the factory

default settings.

5. If any problems are observed, make corrections to your wiring and re-

test.

3.13 Avoiding Heat Problems with Installations

Most HO & N Scale locomotive motors, LEDs, and lamps are designed to

operate on 12 volts DC on the track. Z Scale equipment is designed to run at 9

volts. Digitrax recommends running your command station and boosters at the

lowest track voltage possible that provides acceptable operation.

The “N” (12V) setting on Digitrax command stations and boosters works well

for most HO & N scale layouts. The “HO” setting should be used only for HO

and larger scales. We recommend using a UP6Z Voltage Reducer for Z scale

layouts to avoid applying too much track voltage to Z scale equipment.

If the track voltage applied exceeds the operating parameters of the locomotive

and it’s LEDs/lamps, damage to the locomotive or decoder may occur.