MRC 0001657 User manual

HO Gauge Synchronized
Diesel Sound Decoder with
28 Accessory Functions
Item #0001657
Thank you for purchasing our highly advanced DCC locomotive
sound decoder. Combined with any DCC System, our new
decoder with “Camegie Hall” sound quality will make your model
railroad come to life.
•Synchronized diesel prime mover with randomly associated
locomotive sounds
•1.5 amp capacity
•Programmable choice of 2 different horns and 2 bells
•Programmable individual sound volumes
•Programmable for either 2-digit (1-127) or 4-digit
(1-9999) addresses
•Programmable start voltage
•Programmable acceleration rate
•Programmable deceleration rate
•Programmable top voltage
•Programmable 14, 28, 128 speed steps
•Selectable factory default speed curve
•Directional lighting (FO) at 0.2 amp rate
•Programmable for either ditch lights, mars light, gyra
light andprime strobe light
•28 accessory functions (F1-F28)
•Supports advanced consisting (CV19)
•Supports programming on the main (OPS mode)
•Compatible with NMRA DCC standards
•NMRA 8 pin plug included for easy installation
•Complies with Part 15 of FCC
•20mm speaker with baffle included (other size, aftermar-
ket speakers are available from MRC)
•Dimensions: 46.0mm x 17.5mm x 5.0mm
•The decoder can be upgraded to all the horns included
in the Demo F19, and more choices of bells.
PROGRAMMING
This decoder supports all programming methods including: register, paged CV,
direct CV, and programming on the main (ops mode programming).
NOTE: Due to limitations in older DCC systems, some of the sound functions or
light effects functions may not accessable. ALSO, you might be limited to factory
default CV values.


2007 MODEL RECTIFIER CORPORATION
80 NEWFIELDAVENUE
EDISON, NJ 08837-3817 Printed in USA
LIGHT EFFECTS WIRING
Your MRC Synchronized Diesel Sound Decoder is equipped with normal
directional lighting, plus MRC light effects. If your loco has ditch lights, mars light
or strobe light, you can solder wires to the four solder tabs (2 pairs marked with
ACC1,ACC2) on the bottom of the decoder. The two center solder tabs are the
common for the accessory light effects.
All the decoder’s light outputs are track output voltage (around
14V) supplied by your DCC system. They are designed for 12V
light bulb. Please contact your loco manufacturer for lights’
operation voltage. If you have a 1.5V bulb use 1k ohm resistor or
LED, you should connect a 2k ohm resistor in series to one of the
leads to limit current.
TROUBLE SHOOTING
The MRC 0001657 HO diesel sound decoder should perform well with all DCC
systems. See your DCC system manual to learn how to program and operate the
decoder. For more information about register/CVs and their functions, please
refer to the NMRA DCC Standard & Recommended practices, RP-9.2.2 this is
available directly from the NMRA or their website at www.nmra.org.
Due to the nature of all sound decoders, the CV read back is not 100% correct.
This is not a defect of the decoder or your DCC. Whenever the decoder doesn’t
work please use program track to re-program the loco address or program CV#
125 with value 1 to restore the decoder to factory setting. This should bring the
decoder to life.
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 interfer-
ence that cause undesired operation.
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 $15.00 check to cover shipping and
handling. Be certain to return only the decoder.
Warranty does not include abuse, neglect, or using this product for
anything other than it’s intended purpose. Warranty coverage will be
handled on a case by case basis, and other charges may apply for
repair/replacement of the product.
Send the decoder to:
Model Rectifier Corporation
Attn: Parts & Service
80 Newfield Avenue
Edison, NJ 08837-3817 U.S.A
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 low er byte 0-255 3
CV19 --- Advanced consist address 0-127 0
CV49 Sound on/off (0=on) 0-1 0
CV50 --- Horn type 0-1 0
CV51 --- Horn volume 0-3 0
CV52 --- Bell type 0-1 2
CV53 --- Bell volume 0-3 3
CV54 --- Bell ring rate 0-50 3
CV55 --- Diesel rumble volume 0-3 3
CV56 --- Brake squeal volume 0-3 3
CV57 --- Dynamic brake volume 0-3 3
CV58 --- Air release volume 0-3 3
CV 59 - -- A ir pump v olume 0-3 3
CV60 --- Safety pop valve volume 0-3 3
CV61 --- Engine cooling fan volume 0-3 3
CV62 --- Coupling volume 0-3 3
CV63 --- Random noise volume 0-3 3
CV64 --- Rail w heel clack 0-3 3
CV105 --- User identification number 0-255 0
CV106 --- User identification number 0-255 0
CV112 --- Exhaust volume 0-3 3
CV113 --- Coupling fire volume 0-3 3
CV114 --- Light brightness (green, brow n) 0-12 3
CV115 --- Auto brake squeal enable/disable 0-1 1(enable)
CV116 --- Coupling sound type 0-2, 2=off 1
CV117 --- Lights enable/disable 0-1 1(enable)
CV118 --- Accessory light #1configuration 0-6 0
CV119 Accessory light #2configuration 0-6 0
CV120 Brake release volume 0-3 3
CV122
Diesel sound type (0=off, 1=rpm & notch synchro
to speed, 2=linear rpm synchro to speed, 3=notch
up/dow n (F8=notch dow n, F9=notch up))
0-3 1
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: Programming to 1 w ill
restore all CV's to default setting --- 0
CV 2 1 - - - 0
When CV21=0, all accessory functions w ill follow
its ow n address. When CV21=1, all functions w ill
follow the consist address
---

INSTALLATION
It is quite a challenge to install a decoder into a loco. You should have some
basic electrical knowledge and soldering skills. If you do not have the above
requirements, please ask the dealer for help in installation.
Figure 1 shows the electrical circuit of most standard locos. The terminals of the
motor and light(s) are directly connected to the wheel pickup. Each type of loco
has its own method of electrical pickup and distribution. The connection between
the wheels, motor and light(s) could be wires, clips, the body or chassis, PC
board or any other type of conductor. First, figure out your loco’s electrical
wiring and how to disconnect (isolate) the motor and light(s).
Figure 1. Connection of standard locomotive. Note: The ‘X’ marks indicate
where to disconnect (isolate).
The decoder will be inserted between the wheel pickup and the motor.
Each manufacturer and loco may have different ways of decoder
installation. There is no standard rule for installing decoders. It is
always better to consult the loco manufacturer on how to install a
decoder in that particular loco.
Figure 2 shows how to wire the decoder. After disconnecting the motor
terminals from the pickup, connect the red wire to the right side pickup and the
black wire to the left side pickup. Connect the orange wire to the motor terminal
that was originally connected to the right pickup. Connect the gray wire to the
motor’s other terminal. Connect the front light to the blue wire and the white wire.
Connect the rear light to the blue wire and the yellow wire.
The blue wire is the common terminal for lights and accessory functions. You
may use the black wire or the red wire to replace the blue wire. This is useful
when isolating one of the light terminals from the pickup is difficult. Wiring the
bulb this way will make the light dimmer. If your loco has only a front light, you
should connect the white and the yellow wires together. If your locomotive has a
NMRA 8 pin receptacle, remove the dummy plug. Match first pin and plug in the
decoder.
MAKING A TEST TRACK
Before you begin decoder installation, we strongly recommend building a test
track with a 27 ohm resistor to limit current. Only test your installed decoder on
the test track. The test track may prevent damage from an incorrectly installed
decoder.
The program track is NOT a test track. The program main track does not use a
current limiting resistor. So it can’t protect an incorrectly installed decoder.
TESTING
All MRC decoders have been factory programmed with address #3, 28/128
speed steps and maximum top voltage. Never run the installed decoder on
your layout without first successfully running on test track. Otherwise,
you may damage the decoder if it is not wired correctly or if you have not
properly isolated the motor and lights.
To test, place the loco on the test track. Select the “Run” mode of your DCC
system and select or acquire address #3. Move up the throttle and the loco
should move forward. Push the light button [F0] and the front headlight should
come on. Change the direction of the loco and the loco should change direction
and the rear headlight (if equipped) should come on. The loco cannot reach full
speed, due to the resistor. If all above occurs, you passed the test. Congratula-
tions!
Do not run the loco for an extended period of time on the test track
or the resistor will overheat.
If your installed decoder does not pass the test, find the problem, correct it and
test it again. As long as you test the decoder on the test track there is little chance
of damaging the decoder. That is why the test track is so important. Also do not
confuse a test track with a program track. A program track does not use the
current limiting resistor. Sound decoders need full power to the program track to
install all programming instructions.
OPERATION
This decoder can be operated with the diesel sounds on or off. It can also be
used in an Electric Type Traction Loco such as Trolley or GG-1 by turning off
diesel sounds. To turn off the diesel prime mover sounds, program CV #122 with
value 0.
If your DCC system supports higher functions, F18 and F19, you can use these
functions to change the type of bell sound, (F18), or horn sound, (F19) on the
move without having to go into “OPS mode” programming or by changing CV
values.
This decoder supports the new NMRA protocols that use up to function 28, (F28).
Right now only MRC Prodigy2 has 28 functions.
There are many more program features available with this decoder. Please refer
to the CV Chart to explore other features of the decoder. If you don’t use MRC
Prodigy2you may not be able to access all the features of the decoder.
Note: Bell, Dynamic Brake and Rail Wheel Clack cannot play at the same time. If you
active the Bell sound [F1], while either the Dynamic Brake or Rail Wheel Clack
sounds are activated, the Bell sound will override the other 2 sounds. Rail Wheel
Clack cannot play while the loco is in idle. When you turn off Dynamic Brake and
Rail Wheel Clack sound there will be one second delay.
LIGHT EFFECT PROGRAMMING CHART FOR CV#118/119
You would program CV #118/119 to choose the desired light effect. CV118 for
ACC1 and CV119 for ACC2. For ditch light both CV118 and CV119 must to 0.
DIESEL SOUNDS CHART
Right side pickup
Front
light Motor Rear light
Left side pickup
X X
X X X
X
Figure 3. Diagram of test track
DCC base unit
Power supply
Test track
27 ohm resistor
Function Idle /M oving
F0 Headligh on/off
Double click F0) Sound on/off
F1 Bell on/off
F2 Horn
F3 Air release sound/Accessory light #1 on/off
F4 Coupling sound
F5 Brake release (idle) / brake squeal (moving)
F6 Dynamic brake on/off
F7 Uncoupling lever
F8 Air hose firing
F9 Engine cooling fan
F10 Rail w heel clack (only moving)
F11 Traction air compressor
F12 Sound on/off
F13 Short air release/accessory light function #2 on/off
F14 Coupling crash
F15 Air pump
F16 Associated loco sound
F17 short air release
F18 Bell type select (use F1 to turn off bell after selecting)
F19 Demo sample horns if upgraded
F20 Bell ring rate
F21 Change bell volume (use F1 to turn off bell after adjustment)
F22 Change horn volume
F23 Change diesel rumble volume
F24 Dynamic brake volume
F25 Brake squeal volume
F26 safety valve pop
F27 Safety valve pop
F28 Short air release
CV118/119 value ACC#1/ACC#2 Light e ffe ct
0 Ditch light
1 Gyra light
2 Marslight
3 Prime strato light
4 Single strobe light
5 Double strobe light
6 on/off
Figure 2. 0001657 decoder wiring diagram
1
orange
black
red
orange
gray
yellow
white
right
blue
headlight
rear light
black
left
black
20mm speaker
with cap