Digitrax DH166MT Manuel utilisateur

Features:

▪FX3Function outputs for prototypical lighting eects and on/o control:

Constant Brightness Lighting with directional or independent control.

Realistic Eects like Ditch lights, Mars lights, strobes, and many more

FX3 & Standard Function Qualiers operate functions based on direc-

tion, F0 on or o, direction and F0, and whether loco is moving.

Function Remapping for custom function setup.

Master Light Switch turns o all lights & functions with one keystroke.

Advanced Consist Function Controls

▪Digitrax LocoMotion® System-Your locomotives look like the real thing.

The Digitrax LocoMotion System makes them run like the real thing, too!

Torque Compensation for smooth as silk silent operation.

128 Speed Step operation (14 or 28 steps can also be used).

Momentum with acceleration and deceleration.

Normal Direction of Travel is user selectable.

Switching Speed feature for easier and faster access to yard speeds.

3 Step Speed Tables set start, mid and max voltage for custom control.

28 Step Speed Tables with 256 level resolution for precise control.

▪Congurable Logic Level or 12v F3-4 function outputs.

▪Program CVs using any Digitrax Compatible Control system without having

to buy any extra equipment.

▪Compatible with Locomotives using the 21MTC Interface

▪Series 6 Decoder Features.

▪Works with PX112-2 Power Xtender.

▪Congurable FX3 Pulse Function available on all function outputs.

▪2 Digit and 4 Digit Addressing.

▪Basic, Advanced & UniVersal Consisting.

▪SuperSonic motor drive for silent operation.

▪Direct mode programming.

▪Transponder Equipped ready for transponding on your Layout.

▪Motor Isolation Protection helps prevent damage to your decoder.

▪DCC Compatible.

▪FCC Part 15, Class B RFI compliant.

▪Digitrax “No Worries” Warranty.

DH166MT

Fits HO Scale

Locomotives

.824”x.64”x.17”

20.92mm x 16.26mm x 4.32mm

HO Scale

Mobile Decoder

21MTC interface

1.5 Amp/2 Amp Peak

6 FX3Functions, 0.5 Amp

Complete Train Control

Run Your Trains, Not Your Track!

Parts List

1 DH166MT Function Decoder

1 Instruction Sheet

Installation Information

See the Digitrax Decoder Manual for complete decoder test procedures, instal-

lation instructions, programming and technical information. Digitrax manuals

and instructions are updated periodically. Please visit www.digitrax.com for the

latest versions, technical updates and additional locomotive-specic installation

instructions. CAUTION: Programming and layout track must not exceed

16V when using this decoder.

Installation Instructions

1. Carefully remove the locomotive shell.

(Figure 1) Note the orientation to

the frame for correct re-installation.

Arrange internal wires to expose the

jumper board in the locomotive.

2. Remove the jumper board from the

locomotive’s 21MTC pins. (Figure

2) The jumper board allows the loco

to operate on a standard DC track or

in analog mode on a DCC track. If

the loco also has a 8pin NMRA

socket, any jumpers should also

be removed.

3. Insert the 21MTC socket onto the ex-

posed pins. The black socket and the

decoder text should be facing up. The

socket is indexed so it will only t on

in one conguration. (Figure 3) Seat

the decoder rmly on the pins.

4. Replace the loco shell on the frame.

The loco is now ready to run on your

DCC system using the factory set

address 03. See next page for cus-

tomizing some of the functions of the

DH166MT decoder.

Figure 1: Remove loco shell

Figure 2: Carefully

remove jumper board

Figure 3:

Carefully plug in decoder

Jumper Board

Decoder

Installation Notes

1. Do not exceed the decoder’s 500mA total function output rating.

2. To use a function output with an inductive (coil) type load, see the Digitrax

Decoder Manual for more information to avoid damage to the decoder.

3. 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 function lead to

protect the decoder.

4. Some locomotives employ lter 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.

Customizing Your Decoder

Your Digitrax decoder is ready to run and will operate using address 03, conrm

that all available lighting functions activate. CV64 may need to be changed for

Logic Level or 12v compatible function outputs. For a more prototypical rail-

roading experience, your decoder can be customized for your specic locomotive

by programming some of the Conguration Variables, or CVs, available. See the

Digitrax Decoder Manual or the Digitrax web site for more information.

Changing the Decoder Address

The rst CV most people change is the decoder address. This allows you to inde-

pendently 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 DT4XX series throttle. See

your Starter Set Manual for complete programming instructions.

1. Place the loco on the programming track not to exceed 16V. Go into

Program Mode on your system. On DT4XX throttle press PROG.

2. Choose AD2 for 2 digit addressing or AD4 for 4 digit addressing.

3. Choose the address you want to set up for the decoder.

4. Complete address programming by pressing ENTER.

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

automatically by the DT4XX throttles. See your Digitrax Decoder Manual or the

Digitrax Toolbox App for how to set up CV29.

Digitrax LocoMotion®System

Your locomotives look like the real thing, now you can make them run like the

real thing, too. Digitrax decoders incorporate torque

compensation for smooth as silk operation. You can also program CVs that

control momentum, 3 step and 128 step speed tables, switching speed, normal

direction of travel, scalable speed stabilization and more to take full advantage of

the Digitrax LocoMotion System.

Momentum-CV03 & CV04

Momentum is part of the LocoMotion System. Acceleration is controlled by CV03

and deceleration by CV04. Both come from the factory set to 000. A range of 000

to 031 is available for both accel and decel. Try CV03:003 and CV04:000 as a

starting point for experimenting with momentum.

Speed Tables-How the Loco Responds to the Throttle

With Digitrax LocoMotion, there are two types of speed tables: 3 Step Tables and

High Resolution 28 Step Tables. Please see your Decoder Manual for a discussion

of the 28 Step Tables. The 3 Step Tables are set up by programming 3 CVs: Start

Voltage (CV02), Mid point Voltage (CV06) and Max Voltage (CV05). These values

are set at 000 at the factory. All have a range of values from 000 to 255. We rec-

ommend the following CV values as a starting point for experimenting with speed

tables.

Loco Type V Start

CV02

V Mid

CV06

V Max

CV05

Switcher

Concentrated low speed. Limited top

speed

002 038 064

Road Switcher

Prototypical top speed w/evenly

distributed curve from 0 to top speed

002 048 098

Mainline Loco

Quick increase to cruising speed then

levels o to prototypical top speed.

002 128 154

Decoder Reset CV08

Decoder reset lets you reset all CV values to the initial factory settings. To reset all

CV values, program CV08 to a value of 008. You also have the option of reset-

ting all the CV values except the 28 speed step tables and CV60 selected sound

scheme. To do this program CV08 to a value of 009.

Other LocoMotion®Features: Switching Speed, Normal

Direction of Travel & Scalable Speed Stabilization

(Back EMF) Features

Switching speed is controlled by CV54. The factory setting is 000 for OFF. To

turn on the switching speed feature, program CV54 to a value of 001. When this

feature is on, use F6 to activate and deactivate switching speed. With the feature

on the throttle’s target speed is eectively reduced by about 50% and the eects

of accel and decel programmed into the decoder are reduced by 1/4. This is useful

for yard switching operations.

Normal Direction of Travel is controlled by CV29. See your decoder manual

or the Digitrax Toolbox App for additional information on the settings for CV29.

Scaleable Speed Stabilization (Back EMF) intensity, or droop, is

controlled by CV57. The factory setting for this feature is 006 which is

suitable for most locos. You can adjust this value in the range of 000

for OFF to 015 for the maximum eect. Consult your Digitrax Decoder

Manual for info about CVs 55 & 56 and their eects on scaleable speed

stabilization. The factory setting for both CV55 & CV56 is 000.

SuperSonic Silent Operation and Torque Compensation

The factory settings in the decoder provide silent, smooth operation of your loco-

motive under most conditions. For more information about these settings, please

see the Digitrax Decoder Manual or our website.

Digitrax Transponding CV61

Digitrax Transponding is controlled by CV61. The initial factory set value is 000

for OFF. To turn on transponding, program CV61 to a value of 002. This al-

lows you to use Digitrax transponding to keep track of your rolling stock. When

transponding is enabled, the front light of the locomotive will icker slightly to

indicate transponding signal is being communicated.

Function Outputs on the DH166MT

The DH166MT is set up at the factory to control six function outputs. The

DH166MT is congured to control the lights on the factory light board through

the 21MTC interface using Function 0 (FOF-forward and FOR-reverse) for direc-

tional lighting. Functions F1(Green), F2 (Violet),F3 and F4 are also available as

part of the 21MTC interface for easy hookup. Depending on your locomotive you

may or may not have these functions available, refer to your locomotive docu-

mentation for more information.

All six function outputs can be easily set up with Digitrax FX3 lighting eects

or as standard on/o functions with the following operational qualiers:

1. Forward or Reverse direction of travel, or

2. Whether F0 is on or o, or

3. Both direction of travel and whether F0 is on or o, or

4. Whether the locomotive is stopped or moving.

Function Remapping

Function remapping allows you to program the function outputs of your decoder

to be controlled by selected function keys on your throttle. Please consult the

Digitrax Decoder Manual or website for information on function remapping.

Master Light Switch

Each of the six function outputs can be programmed to turn on and o with the

F0 ON/OFF key on your throttle, creating a Master Light Switch. The CV

values for creating this eect are listed in the Digitrax Decoder Manual in the

section: Setting up FX & FX3 Eects On Function Outputs.

Logic Level or 12v 21 pin function outputs CV64

The DH166MT can be congured via CV64 for compatibility with either Logic

Level or 12 Volt function formats for outputs F3 and F4. By default CV64 is set

to a value of 0 for Logic Level compatibility. This is the most common congura-

tion for locomotives using the 21MTC interface. Setting CV64 to a value of 64 will

set a bit for function compatibility to 12v format comparable to that of F0, F1, and

F2 .

Warranty & Repair

Digitrax gives a one year “No Worries” Warranty against manufacturing defects

and accidental customer damage on all Digitrax command stations, boosters,

throttles, decoders, power supplies and layout control devices.

That’s it! A simple, straightforward warranty with no tricky language!

Visit www.digitrax.com for complete warranty details and instructions for

returning items for repair.

Please return warranty items directly to Digitrax - DO NOT return items

to place of purchase.

0 0 0 0

2443 Transmitter Road

Panama City, FL 32404

www.digitrax.com

Need Support?

helpdesk.digitrax.com

DH166MT

Fits Many HO Locomotives with 21MTC interface

Made in the USA

Part 15, Class B

RFI Compliant

307-9004-0000

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