Digitrax DN121PS Manual - Page 2

Browse online or download pdf Manual for Media Converter Digitrax DN121PS. Digitrax DN121PS 3 pages. N scale mobile decoder 1.0 amp/1.5 amp peak 2 functions, 0.5 amp dcc plug 'n play with 1' harness, fits many dcc-ready n and ho scale locomotives

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D D

C C

igitrax

ommand

Run Your Trains, Not Your Track!

3. The DN121PS has a short, 1" harness with a DCC medium plug on the end

of it. The plug is oriented so the pin for the orange wire is inserted in the

socket marked "pin 1." Seat

the decoder firmly in the sock-

et. (Figure 3) The Green and

Violet wires are not used on

the DN121PS because it only

supports F0 Fwd and F0 Rev

functions.

4. Replace the loco shell. You are

now ready to run your locomo-

tive. The DN121PS is factory

programmed to address 03.

You can easily customize the

address and other features. See

section "Customizing Your

Decoder" that follows.

Installation Notes:

1. Do not exceed the decoder's

500mA total function output

rating.

2. We recommend that the Blue

wire, also called +Common or

Lamp Common, be connected

as shown. If you wish to omit

the Blue wire in your installa-

tion, consult the Digitrax

Decoder Manual for more

information.

3. The head lamp should be

hooked up using the

Blue/+Common wire for opti-

mal Digitrax transponding

operation.

4. See the Digitrax Decoder Manual for full details of wiring 12-16V lamps,

1.5V lamps, and LEDs. Lamps that draw more than 80 mA when running

require a 22 ohm 1/4 watt resistor in series with the directional light func-

tion lead to protect the decoder.

5. Some locomotives employ filter capacitors for RFI suppression in the loco-

motive wiring. These may cause problems with Supersonic decoders and

non-decoder analog operation on DCC. This capacitor should be removed

for safe operation.

www.digitrax.com

C C

ontrol

Figure 1. Remove loco shell

dummy plug

Figure 2. Remove dummy plug

Pin 1, Orange lead

Figure 3. Install decoder

Pin 1, Orange lead

Customizing Your Decoder

Your Digitrax decoder is ready to run and will operate using address 03 with no

additional programming. For a more prototypical railroading experience, your

decoder can be customized for your specific locomotive by programming some

of the Configuration Variables, or CVs, available. See the Digitrax Decoder

Manual or the Digitrax web site for more information.

Changing the Decoder Address

The first CV most people change is the decoder address. This allows you to

independently control each loco with a unique address. Digitrax decoders are

shipped with CV01 (AD2), the two digit address, set to 03. Following is a brief

description of how to change the decoder address with a Digitrax DT series

throttle. See your Starter Set Manual for complete programming instructions.

1 Place the loco on the programming track. Go into Program Mode on your

system. On DT400 press PROG. On DT300, DT100 & DT200 press

RUN/STOP & FN/F0.

2. Choose AD2 for 2 digit addressing or AD4 for 4 digit addressing (DT300 &

DT400). (Ad for DT100 & DT200, see your Starter Set manual for 4 digit

instructions).

3. Use your throttle to choose the address you want to set up for the decoder.

4. Complete address programming. On DT400 press ENTER. On DT300,

DT100 & DT200 press SEL.

Note: CV29 must also be programmed to enable 4 digit addressing, this is

done automatically by the DT300 & DT400 but not on earlier throttles.

Warranty & Repair

All warranties on Digitrax products are limited to refund of purchase price,

repair or replacement at Digitrax's sole discretion. Except as expressly stated in

the full warranty statement, there are no warranties, express or implied, includ-

ing but not limited to any warranties of merchantability or fitness for a particu-

lar purpose. For complete warranty details see www.digitrax.com.

Damaged decoders should be returned directly to Digitrax for repair.

450 Cemetery Street

Norcross, GA USA 30071

www.digitrax.com

Digitrax, Inc. is not responsible for unintentional

errors or omissions in this document.

www.digitrax.com

770-4 4 41-7 7 992

770-4 4 41-0 0 759

[email protected]