MRC 0001906 User manual

HO DC/DCC Diesel Sound Decoder
Drop in for Atlas Genset Locomotives
Item #0001906
Thank you for purchasing our most advanced DC/DCC
locomotive sound decoder. Combined with any DCC
System, MRC Blackbox or Tech 6, our true live capture
digital sound decoder will make your model railroad come
to life.
•Triple core processor generating three independent diesel
genset prime mover sounds.
•1.5 amp capacity
•22 different types of horns and 8 types of bells
•Programmable individual sound volumes
•Programmable either 2-digit or 4-digit addresses
•Programmable start voltage and top voltage
•Programmable acceleration and decelaration rates
•Programmable 14, 28, 128 speed steps
•Back EMF load control
•Supports read back address and CV value
•Selectable factory default speed curve
•Advanced speed table control CV67-CV94
•Kick start voltage control CV65
•Accessory strobe light effects included
•Replacement ditch light boards supplied for flashing
front and rear ditch lights
•28 accessory functions (F1-F28)
•Supports advanced consisting (CV19)
•Supports programming on the main (OPS mode)
•Compatible with NMRA DCC standards
•Complies with Part 15 of FCC Rules
•16x36 mm speaker included
•Dimensions: 73.0mm x 17.6mm x 8.4mm
PROGRAMMING
This decoder supports all program modes and read back features. With MRC
Prodigy Advance DCC you can read its address and CV value.
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
Loco runing without sound click F12 or use CV 49 to turn on/off sound.
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. This decoder should perform well with all
DCC systems. The maximum DCC output should be less than 21 V. If the locomotive
does not respond to commands, it may have lost its address. Please re-program the
address and program CV19 to 0 (disable consist). If it responds to 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.
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 $9.00 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 $35.00 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
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
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 --- 2
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 always on 0-1 1
CV50 --- Horn type 0-34 13
CV51 --- Horn volume 0-15 12
CV52 --- Bell type 0-8 3
CV53 --- Bell volume 0-15 12
CV54 --- Bell ring rate 0-50 3
CV55 --- Prime mover volume (0=diesel off) 0-13 12
CV56 --- Brake squeal volume 0-15 7
CV58 --- Air release volume 0-15 12
CV59 --- Air pump volume 0-15 12
CV60 --- Safety pop valve volume 0-15 12
CV61 --- Engine cooling fan volume 0-15 12
CV62 --- Coupling volume 0-15 12
CV63 --- Auto ditch lights flash with horn enable 0-1 1(enable)
CV64 --- Rail wheel clack volume 0-15 12
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)
Diesel notch mode, 0=auto-notch
3=manual notch
CV123 prime mover type 0-2 0
CV125 --- Program it to1 will restore some the CV to
factory default settng --- 0
--- 0
CV122 --- 0-3 3
CV21 ---
When CV21=0, all accessory functions will
follow its own address. When CV21=1, all
functions will follow the consist address

INSTALLATION
This decoder board completely replaces the PC Board in the Atlas
Trainman GenSet Locomotive. Following the Atlas directions, slowly
remove the body shell from the chassis of the locomotive. Be careful as
the supplied headlight wires are very short and may break off from the
LED’s when you remove the body shell. We recomend using a dab of hot
glue to secure the headlight wires close to the headlight location inside the
long hood of the body shell, to avoid them breaking off. Use a 1” to 2” thin
wire to connect two black wires from the headlights. Tape the joint to avoid
short circuit. This thin wire will be connected to the tab marked “headlight
com”. Remove the original board with two Atlas ditch light boards.
Remove the weight from the rear part of the chassis. Remove two capacitors
hidden under the weight. They will not be used. The speaker supplied with
your decoder fits snugly in place where you removed the two capacitors. We
recomend using a small bead of glue to fully secure the speaker to it’s
location. Before installing the ditch light boards please use tape to completely
wrap both front and rear ditch light board holders/slots to prevent the LEDs
from touching the chassis, and shorting out.
The ditch light boards are already soldered to the decoder for your
conveniance. Be very careful with these wires as they are very fragile.
.
Using the supplied wiring diagram, attach the four pickup, two motor and
three headlight wires to the decoder board and secure using the plastic
clips or by soldering the wires to the tabs on the decoder. Use all the
wire channels in the chassis to route the wires going to the decoder and
use scotch tape in these locations to keep the wires from moving. If you
wish to add a roof top strobe light to your loco, use the tab marked for
strobe light and the headlight common tab on the decoder.
MAKING A TEST TRACK
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 will reduce the chance of damaging your decoder due to an
incorrectly installed decoder.
TESTING
The decoder has been programmed to address #3, 28/128 speed steps. To test,
place the loco on the test track. Select address #3 and 28 speed step. Move up
the throttle and the loco should move. Push the light button [F0] and headlight
should come on. Change the direction of the loco and the loco should change
direction. The loco cannot reach full speed, due to the resistor. If all the above
occurs, you passed the test. Congratulations! 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. This is why the test track is so important.
OPERATION
The decoder has start up and shut down features. If the loco was previously
shut down you have to start up the engine. 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. This decoder is default to manual
notch setting (CV122=3). F9 will notch up and F8 will notch down. It has three
independent diesel genset prime mover sounds. The second engine will turn on
at notch 4 and the third will turn on at notch 6. This decoder also mimics the real
GenSet, and if left idling for a long period of time will shut down and re start
automatically at specific intervals to conserve fuel.
Shutting off the sound in CV49 will not disable the horn. The decoder has two
types of diesel prime movers. You can use F12 or CV 123 to select the desired
prime mover sound. You can use F19 to select 34 different horn sounds and
use F18 to select 8 different bell sounds. With MRC Prodigy Advance2DCC
which has 28 functions, you can easily setup and access all the decoder’s
functions. If not, you may not be able to access all the features of the decoder.
And you have to use the CV program to setup the decoder.
If you want automatic notching enabled set CV 122 = 0
The decoder can also be operated by a regular DC power pack. This will give
you engine sounds only. The DC operation is not recommened. If you wish to
enjoy the full array of sound functions using your DC power pack, the unique
MRC Blackbox (item #0001050), or the tech 6 2.0, (#0001200), will allow you to
control all of the sounds in your sound equipped locomotives.
Right
pickup
Right
pickup
Motor
red
Headlight
common
Left pickup Left pickup
Motor
(black)
Front
light
Rear
light
Strobe light Speaker plug
Function Idle/Moving
F0 Lights on/off
F1 Bell on/off
F2 Horn
F3 Ditch Lights on/off
F4 Coupling 1
F5 Brake release (idle) / brake squeal (moving)
F6 Strobe Light on/off
F7 Air hos e firing/uncoupling lever
F8 3 times w ill shut dow n w hen in idle / Manual notch dow n
F9 Engine cooling fan / Manual notch up
F10 Rail wheel clack (only moving)
F11 Traction air compressor
F12 Change prime mover type, (2 types and off)
F13 Short air release
F14 Coupler crash
F15 Air compressor
F16 Flange squeal
F17 Air release
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 prime mover volume
F24 Safety valve pop
F25 Air release
F26 Flange noise
F27 Sand drop
F28 Ditch Lights flash when F3 is activated
Use tape to completely wrap
both front and read ditch light
board holders to prevent LEDs
from touching the chassis
DCC base unit
Power supply Test track
27 ohm resistor
Figure 3. Diagram of test track