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© 2014 Digitrax, Inc.

www.digitrax.com

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Installation Notes

1.  Do not exceed the decoder’s 

500mA total function output 

rating.

2. 

We recommend that the Blue 
wire, also Common or 
Lamp Common, be connected 
as shown. If you wish to omit 
the Blue wire in your instal-
lation, consult the Digitrax 
Decoder Manual for more 
information.

3.  The head lamp should 

be hooked up using the 

Blue/+Common wire for 

optimal Digitrax transponding 
operation.

4.  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.

5. 

See the Digitrax Decoder Man-

ual 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.

6.  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.

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.

Figure 3

: Wires unsoldered from 

light board.

Figure 4

: Wires soldered onto 

the DN166I2B

Wires soldered on.

Summary of Contents for DN166I2B

Page 1: ...teps 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 Program CVs using any Digitrax Compatible Control system without having to buy any e...

Page 2: ...the shell is off remove the existing light board by removing the two screws located on the diagonal corners of the board and unsoldering the motor and light connections Note It is important to make sure the motor and LED are electricaly isolated from the frame For full details visit www digitrax com funit 4 Take the new DN166I2B decod er and feed the motor leads up through the holes as show in Fig...

Page 3: ...s 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 6 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 Customizing ...

Page 4: ... 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 p...

Page 5: ...ffectively reduced by about 50 and the effects 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 The intensity or droop of Scaleable Speed Stabilization Back EMF is controlled by CV57 Th...

Page 6: ...function outputs can be easily set up with Digitrax FX3 lighting effects or as standard on off functions with the following operational qualifiers 1 Forward or Reverse direction of travel or 2 Whether F0 is on or off or 3 Both direction of travel and whether F0 is on or off or 4 Whether the locomotive is stopped or moving Function Remapping Function remapping allows you to program the function out...

Page 7: ...t 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 resetting all the CV values except the 28 speed step tables To do this program CV08 to a value of 009 Warranty Repair Digitrax gives a one year No Worries Warranty against manufacturing defects and accidental customer damage on all Digi...

Page 8: ... Super TM 0 0 0 0 2443 Transmitter Road Panama City FL 32404 www digitrax com Contact www digitrax com contact Support techsupport digitrax com Repair repair digitrax com DN166I2B Fits New InterMountain N Scale FP 7 units released 2014 Made in the USA TM Part 15 Class B RFI Compliant ...

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