MRC 0001805 User manual

HO Gauge Synchronized
Diesel Sound Decoder For G.E. U23B
(With NMRA 8 pin plug and 9 pin JST connector)
Item #0001805
Thank you for purchasing our highly advanced DCC locomotive
sound decoder. Combined with any DCC System, our new
decoder with “Carnegie Hall” sound quality will make your model
railroad come to life.
•Recorded from real G.E. U23B locomotive, plus extra
optional prime mover sound
•1.5 amp capacity
•Programmable choice of 34 different horns and 8 bells
•Programmable individual sound volumes
•Programmable for either 2-digit (1-127) or 4-digit
(1-9999) addresses
•Programmable start voltage, and top voltage
•Programmable acceleration rate, and deceleration
•Kick Start (CV 65)
•User programmable custom speed table (CV 67-94)
•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 and prime strobe light
•28 accessory functions (F1-F28)
•Supports advanced consisting (CV19)
•Supports full read back of CV’s
•Supports programming on the main (OPS mode)
•Compatible with NMRA DCC standards
•NMRA 8 pin plug and 9 pin JST connector
•Complies with Part 15 of FCC
•20mm speaker with baffle included (other size, aftermar-
ket speakers are available from MRC)
•Dimensions: 40.0mm x 17.0mm x 6.5mm
Printed in USA
SPEED TABLE CV67-CV94 FOR 28 SPEED STEPS
When CV29’s bit 4 is set to “1” it will use the speed table formed by CV67-CV94
to control speed (motor voltage). It allows you to setup each speed for all 28
speed steps. First, program CV29 to 18 for short addresses (1-127) or program
CV29 to 50 for long addresses (128-9999) to enable speed table control. Then
select throttle to 28 speed steps and run your loco at speed step 1. Use program
CV on the main to change CV67’s value (1-255) to adjust step 1’s speed. The
kick voltage, CV65 is only applied when the speed step changes from 0 to 1. You
should switch between 0 to 1 many times to check step 1’s speed. When done
with CV67, select speed step 2 and program CV68. CV68’s value must be
greater then CV67’s. When done with CV67-CV94, use read back CV to make
sure their values are in increasing order.
Note: When using MRC Prodigy DCC to program addresses it will automatically
disable the speed table (set CV29’s bit 4 to “0”). Programming CV125 to 1 will
also disable the speed table and re-program CV67-CV94 to a default linear
speed setting.
TROUBLE SHOOTING
This decoder should perform well with all DCC systems. The maximum DCC
output should be less than 15 V. If the locomotive does not respond to com-
mands, it may have lost its address. Please re-program the address and program
CV19 to 0 (disable consist). If it responds slowly, you should clear its momentum
by reprogramming CV3 and CV4 to zero. If step 1’s speed is too high, you should
program start voltage, CV2 to zero. If its top speed is too slow, program top
voltage CV5 to 31. You should also clean the track to improve electrical pickup.
Read your DCC system manual to learn how to program and operate the decoder.
For more information about registers/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. Whenever the
decoder doesn’t work please use the program track to program CV# 125 with
value 1 to restore the decoder to factory settings. This should bring the decoder
to life with address #3.
FCC COMPLIANCE
This device complies with part 15 of the FCC Rules. 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 may cause undesired operation.
RETURN PROCEDURE
This decoder carries a 6 month warranty against factory defects. This warranty
does not include abuse, misuse, neglect, improper installation, or any modifications
made to this decoder, including but not limited to the removal of the NMRA plug if
applicable. If it should become necessary to return the decoder for warranty repair/
replacement, please include a copy of the original sales receipt. Please
include a letter (printed clearly) with your name, address, daytime phone number,
and a detailed description of the problem you are experiencing. Please also include
a check or a money order for $8.00 to cover return shipping and handling. If the
decoder is no longer considered under warranty, then please include a check or a
money order for $29.00 to cover the cost of repair or replacement and return
shipping and handling. Be certain to return the decoder only.
Any questions regarding Warranty Policy can be directed to our Customer
Service Department by calling 732-225-6360 between the hours of 8:30am
and 6:00pm EST, or by emailing: [e-mail]
Send the decoder to:
Model Rectifier Corporation
Attn: Parts & Service
80 Newfield Avenue
Edison, NJ 08837-3817 U.S.A
PROGRAMMING
This decoder supports all program mode and read back feature. With MRC Prodigy
Advance DCC you can read its address and CV value.
CV Register Description Range Default
CV1 R1 Short address 1-127 3
CV2R2Startvoltage0-320
CV3 R3 Acceleration 0-32 0
CV4 R4 Deceleration 0-32 0
CV5 --- Top voltage 0-32 32
CV6
Speed curve select (0=linear, 1=slow
increase at slow speed, 2=fast increase at
slow speed
0-2 0
--- 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
CV49 Sound on/off, horn is always on 0-1 1
CV50 --- Horn type (34 types) 0-33 4
CV51 --- Horn volume 0-3 3
CV52 --- Bell type (8 types ) 0-7 3
CV53 --- Bell volume 0-3 3
CV54 --- Bell ring rate 0-50 3
CV55 --- Diesel rumble volume 0-3 1
CV56 --- Brake squeal volume 0-3 2
CV57 --- Dynamic brake volume 0-3 3
CV58 --- Air release volume 0-3 3
CV59 --- Air pump volume 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 Auto ditch lights with horn enable/disable 0-1 1
CV64 --- Rail wheel clack 0-3 3
CV65 Kick start voltage 0-63 63
CV67-94 28 speed steps table while CV29.4=1 1-255 linear
CV105 --- User identification number 0-255 0
CV106 --- User identification number 0-255 0
CV113 --- Coupling fire volume 0-3 3
CV114 --- Brake release volume 0-3 3
CV115 --- Auto brake squeal enable/disable 0-1 1(enable)
CV116 --- Auto bell with horn enable 0-1 0(disable)
Light mode, 0=normal headlight
1=off, dim, bright cycle, 2=rule 17
CV118 ACC1 light mode 0-6 0
CV119 ACC2 light mode 0-6 0
Diesel notch mode, 0=auto-notch
3=manual notch
CV123 Prime mover type( 2 types plus diesel off) 0=G.E. 0-2 0
CV124 Back em f load control on/off 0-1 0
CV125 --- Program it to1 will restore some the CV to
factory default s ettng --- 0
0CV117
--- 0CV21 ---
When CV21=0, all accessory functions will
follow its own address. When CV21=1, all
functions will follow the consist address
0-2
CV122 --- 0-3 0

Figure 2. 0001805 decoder with NMRA plug.
1
orange
black
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.
The decoder has a NMRA 8 pin plug and 9 pin JST connector for easy installation
into DCC ready locomotives.If the locomotive is not DCC ready, follow figure 1 as
how to isolate the locomotives electrical circuits. 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 if
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. Please use the following diagram to make
a test track, and test the installation prior to programming or running the loco.
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.
OPERATION
The decoder has two types of diesel rumble. You can use F12 to select
different diesel rumbles, plus “off”. The decoder has start up and shut down
feature. Press any function key to start up the engine before operating the
loco. To shut down the engine you must bring the loco to idle and then press
F8 three times. If the loco is previously shut down you have to start up the
engine. You can use F19 to select 34 different horn sounds and use F18 to
select different 8 bell sounds. If you don’t have MRC Prodigy Advance DCC you
have to use CV programmming to select these features.
The decoder is default to automatic notch. You can program CV122 to 3 for
manual notching of the loco for realistic operation. You can then use F9 to notch
up and use F8 to notch down.
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.
LIGHT EFFECT PROGRAMMING CHART FOR CV#118/119
Program CV117 to choose 3 different modes of headlight effects (0=normal
directional, 1=off/dim/bright cycle, 2=rule 17). Both ACC1 and ACC2 has 7
different accessory lights effects. 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 be 0. In ditch light mode, use F3 to turn on/off and use F28 to enable/
disable flash. When you blow the horn the ditch lights will flash. The ditch lights
will remain flashing for several seconds after horn is off.
green wire pink wire
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
CV118/119 value ACC#1/ACC#2 (green/pink ) Light effect
0 Ditc h light
1 Gyra light
2 Marslight
3 Prime strato light
4 Single strobe light
5 Double strobe light
6 On/off
Function Idle/Moving
F0 Headlight on/off or rule 17 or cycle of dim, bright, off
F1 Bell on/off
F2 Horn
F3 Air release/ Accy light 1 on/off (see CV118)
F4 Coupling 1
F5 Brake release (idle) / brake squeal (moving)
F6 Dynamic brake on/off
F7 Air hose firing/uncoupling lever
F8 Click 3 times during idle will shut down / notch down while CV122=3
F9 Engine cooling fan / notch up while CV122=3
F10 Rail wheel clack (only moving)
F11 Associated loco sound
F12 Change prime diesel mover (2 type2 plus diesel off)
F13 Air release / Accy light 2 on/off (see CV119)
F14 Coupling 2
F15 Air pump
F16 Associated loco sound
F17 flange noise 1
F18 Change bell type (use F1 to turn off bell after adjustment)
F19 Horn type select (total 34 different horns)
F20 Associated loco sound
F21 Change bell volume (use F1 to turn off bell after adjustment)
F22 Change horn volume
F23 Change diesel rumble volume
F24 Air release
F25 flange noise 2
F26 Safety valve pop
F27 sand drop
F28 Ditch lights flash enable/disable with Air release