User Manual

ManualsBrandsModel Rectifier Corporation ManualsHobbyHO DCC Decoder w/JST Adapter

Programming

The 0001651 decoder supports the following register and CV program-

ming.

MRC 1651

4-FUNCTION DECODER

with MRC Light Effects

Built-in NMRA DCC & 9-pin plug

Thank you for purchasing our highly advanced DCC locomotive

decoder. Combined with any DCC System, our decoder will

make your model railroad more realistic and more exciting.

• Designed for HO scale

• Built-in NMRA DCC plug and 9-pin plug

• Maximum current: 1.5 Amp

• Programmable for either 2-digit (1-127) or

4-digit (1-9999) addresses

• Programmable start voltage

• Programmable acceleration rate

• Programmable deceleration rate

• Programmable speed curve (factory pre-set)

• Programmable top voltage

• Programmable 14, 28, or 128 speed steps

• Directional lighting at 0.1 amp rate

• Easy setting “Rule 17” lighting, ditch, strobe and

Mars lights

• 2 accessory functions (ACC1 & ACC2), at 0.1 amp

rate

• Supports advanced consisting, (CV19)

• Supports programming on main

• Compatible with NMRA DCC standard

• Complies with the Part 15 of FCC

• 26.5mm long x 15.0mm wide x 5.0mm high

The MRC 0001651 decoder should perform well with your DCC system.

See your DCC command station’s manual to learn how to program and

operate the decoder.

FCC COMPLIANCE

This device complies with the Part 15 of FCC rule. Operation is subject to

the following two conditions. (1) This device may not cause harmful

interference, and (2) this device must accept any interference received,

including interference that cause undesired operation.

TROUBLE SHOOTING

Whenever you find the decoder doesn’t work properly please clean your

track and the loco’s wheels. And reprogram loco address or program

CV125 with a value of 1 to restore factory defualt setting. Your decoder

may simply lose its memory. All you may need to do is to reprogram its

address.

RETURN PROCEDURE

If it should become necessary to return your decoder, unplug the decoder

and return the decoder only. Please include a letter (printed clearly) with

your name, address, a daytime telephone number and a detailed

description of the problem you are experiencing. Please also include a

$9.00 check for shipping and handling fee.

Be certain to return the decoder only.

Send the decoder to:

Model Rectifier Corporation

Attn: Parts & Service

80 Newfield Avenue

Edison, NJ 08837-3817 U.S.A



 2007 MODEL RECTIFIER CORPORATION

80 NEWFIELD AVENUE

EDISON NJ 08837-3817

Tel. 732-225-6360

PRINTED IN USA

ABOUT BACK EMF SPEED CONTROL

The decoder has back emf speed control abliity. By programming CV123

with a value of 1 will enable back emf. However back emf may not be

suitable for the type of motor in the locomotive. If your locomotive hesitates

in the mid to high speed range turn the back emf feature off by programming

CV123 with a value of 0.

HOW TO SELECT SPEED CONTROL

You can select three speed curves (linear, slow increasing, fast increasing).

The figure below shows the CV124’s value and its speed curve.

You can also enable back emf by program CV 123 with value of 1. When

you enable back emf, it will automaticall add momentum for a smooth

speed control.

Output

CV #124 =1

CV #124 =2

CV #124 = 0, Linear

Speed curve of different value of CV #124

CV Register Description Range Default

CV1 R1 Short address 1-127 3

CV2 R2 Start voltage 0-32 0

CV3 R3 Acceleration 0-32 0

CV4 R4 Deceleration 0-32 0

CV5 --- Top voltage 0-32 32

--- R6 Page number --- ---

CV29 R5 Basic configuration --- 2

CV7 R7 Manufacturer version number --- 32

CV8 R8 Manufacturer ID --- 143

CV17 --- Long address upper byte 192-231 192

CV18 --- Long address lower byte 0-255 3

CV19 --- Advanced consist address 0-127 0

CV60 head light

CV60=0 for directional, =1 for rule 17,

=2 for on/off at same time

0-2 0

CV105 --- User identification number 0-255 0

CV106 --- User identification number 0-255 0

CV112 ACC1 light type control (green wire) 0-5 0

CV113 ACC1 light type control (pink wire) 0-5 0

CV124

Speed curve select (0=linear, 1=slow

increase at slow speed, 2=fast

increase at slow speed

0-2 0

CV125 ---

Factory default setting: Program it to 1

will restore all the CV to defult setting

--- 0

CV21 --- 0

When CV21=0, all accessory f unction w ill

follow its ow n address. When CV21=1, all

functions w ill f ollow the consist address

0-1

Summary of content (2 pages)

PAGE 1
HOW TO SELECT SPEED CONTROL You can select three speed curves (linear, slow increasing, fast increasing). The figure below shows the CV124’s value and its speed curve. You can also enable back emf by program CV 123 with value of 1. When you enable back emf, it will automaticall add momentum for a smooth speed control. The MRC 0001651 decoder should perform well with your DCC system. See your DCC command station’s manual to learn how to program and operate the decoder.
PAGE 2
Figure 2. Decoder wiring diagram orange Figure 1. Connection of a standard locoNote: The ‘X’ signs indicate where to disconnect (isolate) Right side pickup X Front light X X Motor X X X strobe light black left NMRA DCC plug yellow rear light white right red ditch light ditch light gray The blue wire is the common terminal for headlights and accessory functions (ACC1 & ACC2). You may use the black wire or the red wire to replace the blue wire.