MTHTrains HO 2-8-4 Quick start guide

M.T.H. HO 2-8-4
NKP Berkshire
Steam Engine
Congratulations! You've just purchased the
most feature rich and technically advanced
HO steam engine ever produced! In
addition, it happens to be produced by MTH,
the leader in digital sound and control
technology for model railroading. There
willbemanymoreenginestofollow.
Wehopeyouwillenjoythem.
Now,let'sgetstarted…..
PLEASE READ THE MANUAL BEFORE USE AND SAVE
WWW.MTHHOTRAINS.COM
(PS3)
ENGINEER’S GUIDE
33
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Passenger Station Announcement
Freight Yard Sound

TABLE OF CONTENTS
UNPACKING YOUR ENGINE 4
Removing and Unwrapping Your Engine 4
What Else is in the Box? 4
PRODUCT OVERVIEW 5
Getting to Know Your Engine 5
Engine Diagram 7
SET-UP 8
Coupler Installation 8
Engine and Tender Connection 9
Smoke Unit Preparation and Use 9
Removal/Installation of Drive Wheel Sets 9
Lubrication 12
FEATURES AND OPERATION 13
Analog DC (standard DC power pack) 15
DCC Digital Command Control 20
DCS Digital Command System 23
SPECIFICATIONS 25
CARE AND MAINTENANCE 26
Troubleshooting Guide 26
SERVICE & WARRANTY INFORMATION 32
Service & Warranty Information 32
Limited One-Year Warranty 32
This product may be protected by one or more of the following patents: 6,019,289; 6,280,278;
6,281,606; 6,291,263; 6,457,681; 6,491,263; 6,604,641; 6,619,594; 6,624,537; 6,655,640.
©2010, M.T.H. Electric Trains®, Columbia, MD 21046
CAUTION: ELECTRICALLY OPERATED PRODUCT:
WARNING:When usingelectricalproducts,basic safetyprecautions shouldbe observed,including thefollowing:
Readthis manualthoroughly beforeusing thisdevice.
lM.T.H. recommends that all users and persons supervising use examine the hobby transformer and other electronic equipment
periodicallyforconditionsthatmayresultintheriskoffire,electricshock,orinjurytopersons,suchasdamagetotheprimarycord,
plug blades, housing, output jacks or other parts. In the event such conditions exist, the train set should not be used until properly
repaired.
lDonot operateyourlayoutunattended. Obstructedaccessoriesorstalledtrainsmayoverheat,resultingindamagetoyourlayout.
lThistrain setisintendedforindooruse. Donotuseifwaterispresent. Seriousinjury orfatalitymayresult.
lDonot operatethehobbytransformerwithdamagedcord,plug,switches,buttonsorcase.
Recommended for Ages 14 and up. Not recommended for children under 14 years of age without adult supervision. As
with all electric products, precautions should be observed during handling and use to prevent electric shock.

M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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QUICK START GUIDE
Of course, you should read your manual over before running your M.T.H.
HO Steam Engine. But if you just can’t wait, choose how you want to run
below and enjoy!! Now, after a few minutes, shut her down and read through
your engineer’s guide.
I USE A REGULAR DC SUPPLY…
Step 1: Unpack your Engine and Tender. (refer to unpacking instruction
on pg 4)…
Step 2: Set the engine on the track …
Step 3: Apply increasing DC voltage until she starts up and pulls out!
I'M A DCC OPERATOR….
Step 1: Unpack your Engine and Tender. (refer to unpacking instructions
on pg 4)…
Step 2: Set the engine on the track …
Step 3: Power up your DCC system…
Step 4: Select engine address 3 and press “F3” to start her up…
Step 5: Turn the throttle and head on down the pike…
I RUN DCS….
Step 1: Unpack your Engine and Tender. (refer to unpacking instructions
on pg 4)…
Step 2: Set the engine on the track …
Step 3: Power up your DCS system…
Step 4: Add the engine to your system and start her up…
Step 5: Turn the throttle and move out….
CAUTION: M.T.H. HO enginesDO NOT OPERATE ON AC VOLTAGE.
Applying AC power to your locomotive could cause permanent damage and will
void your warranty.

UNPACKING YOUR ENGINE
Removing and Unwrapping Your Engine
Carefully remove and unwrap the model on a soft surface. By nature, models with
high levels of detail have some small fragile parts.
Carefully remove any foam packing pieces that may be surrounding the model.
What Else is in the Box?
The following items are packed with your engine.
Engineer's Guide (1)
You probably know that since you're reading it.
Smoke Fluid Pipette (1)
Enough fluid to get you started and then some.
Drive Wheel Set without Traction Tires (1)
For Those who prefer not to use traction tires.
3mm Nut Driver (1)
In case you want to install the drivers without traction tires or replace the standard
drive wheels.
Couplers (2) with mounting hardware
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Tender Coupler Engine Coupler

PRODUCT OVERVIEW
Getting to Know Your M.T.H. HO Locomotive
Key Features
Your new HO Steam Engine is equipped with the exclusive M.T.H. Proto-Sound®
3.0 digital sound and control system. In plain English, this means your locomotive
contains state-of-the-art electronics providing realistic digital sounds, puffing smoke
perfectly synchronized with chuffing sounds and motion, precisely controlled speed
in increments of 1 scale mile per hour, and much, much, more.
Compatibility
The Proto-Sound 3 system is universally compatible with track power and/or signal
combinations including analog DC (regular DC power pack), DCC (NMRA Digital
Command Control), or DCS (MTH Digital Command System). Simply set your
Engine on the rails, apply any one of these power/signal sources, and move out!
The Proto-Sound 3.0 system automatically senses the track environment and adapts
accordingly. No hidden jumpers, switches, magic wands, or programming required!!!
A vast array of realistic operation is automatic when the Engine is run on analog
DC. You can expand access to features in a DCC environment. Experience the
most your new locomotive has to offer in the simple to use yet powerful world of
DCS. To be clear, DCS is NOT a proprietary version of DCC, as some other
manufacturers offer. DCS is a comprehensive layout control system designed
with one primary goal: make model trains do amazingly realistic things
using a simple and intuitive controller. We put the complexity on the inside,
and the fun in your hands!
Digital Sound
Your Proto-Sound 3 (PS 3) equipped Engine contains over 100 individual
recordings. These recordings are played back dynamically at appropriate times to
create a symphony of realism for your ears. Hear the chuffs automatically intensify
or lighten when speeding up or slowing down, listen to the sounds of brakes
squeaking and squealing as you come to a stop, or enjoy the random conversations
of railmen working as your model sits at idle. It's all there and it's incredible.
Now, your HO Engine includes the ultimate in realism Proto-Whistle. With this
incredible new feature you have variable control over the steam whistle sound in
your locomotive (when operated in DCS mode with the DCS Commander or DCS
software version 4.0 or greater). Also included is a one button push Grade Crossing
Whistle
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Digital Control
In standard analog DC mode, your model still operates under digital control. The
PS 3 advance speed control system converts track voltage into digital speed
commands. Your model will run smoothly and consistently at any speed regardless
of load, hills, or curves. If you are a DCC user, you'll quickly learn to appreciate the
precision of our speed control and linear speed curve. DCS users will enjoy the
added benefits of controlling speeds in increments of 1 scale mile per hour
displayed on DCS controllers or easily changing acceleration and deceleration rates
independently without any discussion of bits or bytes. To be clear, DCS is NOT
DCC.
Lights & Smoke
As you read on, you'll notice there are no instructions for replacing light bulbs in
your Mohawk. That's because there aren't any. We use specially designed and
controlled LEDs to create realistic lighting effects that occur automatically. Again,
NO PROGRAMMING!! Just come to a stop and watch as the headlight dims
automatically in accordance with rule 17. Of course, as you pull away, the headlight
returns to it's fully bright, yet warm, glow. We even included a light in the cab so
the engineer and fireman can see to do their jobs!
M.T.H. is renowned for our realistic smoke systems. This HO Steam Engine is no
exception. When the smoke is on, you will experience copious puffs synchronized
precisely with chuffing sounds at 4 times per revolution of the drive wheels. Of
course, when you stop, the smoke wafts out of the stack steadily, justlike the real
thing! The smoke behavior applies to all operating modes, analog DC, DCC, or
DCS. With some DCC controllers, you can turn smoke on and off remotely. In
DCS mode, you can not only toggle smoke on and off with the press of single
button, you can actually select from 3 output levels to keep those smoke alarms
from going off!
More…
In analog DC operation, just flip the track polarity or direction switch at any speed
and watch your Engine gradually come to stop, turn on the appropriate directional
lighting, and smoothly accelerate back up to speed. No other HO locomotive has
features like these. There are so many more things to learn and enjoy about M.T.H.
HO Engines, we could write a book. But, that's no fun. So, if you haven't already
done so, flip to the Quick Start Guide and let's run your new engine!!
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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ENGINE DIAGRAM
Boiler
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Tender
Sliding Roof Vents
Drawbar
Cab Interior
Light
Fireman/
Engineer
Figures
Drive Wheels Pilot Truck
Smoke Stack
Rear Coupler
Drawbar Pin

Connection of the Engine and Tender
Your M.T.H. HO Steam Engine is equipped
with bus type draw bar. The drawbar not
only connects the engine and tender it uses
two electrical conductors to transmit digital
information between the engine and the
tender. Connecting the engine and the
tender is just a matter of inserting the
drawbar pin on the front of the tender into the hole closest to the engine is for
operation on smaller radius curves (less than 44 inch radius). The hole at the end of
the drawbar is for larger radius curves (44 inch radius or greater).
Smoke Unit Preparation and Use
Your M.T.H. HO Steam Engineis equipped with a proven fan-driven smoke system
design featured in M.T.H. products for over 10 years. The performance and realism
of this system is unparallel in the model train industry.
Your smoke unit comes primed from the factory however, before running the smoke
unit for more than a few minutes, you should add more fluid. Add between 10-15
drops initially and whenever smoke output diminishes or if the engine has been
stored for a long period of time. We provided some fluid with your model to get
you started. Versions with twin smokestack openings should have smoke fluid
applied in the forward smokestack opening only.
The smoke unit is controlled differently depending upon how your run your engine
so, for particulars on turning it on or off or setting the output levels, check out the
features and operation section.
You shouldn't run your smoke unit without fluid. Doing so can cause overheating
and reduce the performance and/or life of the unit. If you wish to operate your
engine without smoke, turn the smoke unit off. Do not let the smoke unit go dry
with the smoke unit turned on. Of course, we recommend using only M.T.H.
ProtoSmoke fluid. Super Smoke and LVTS brands also work fine.
Removal/Installation of Drive Wheel Sets
Your M.T.H. HO Steamercomes from the
factory with a set of traction tire equipped drive
wheels installed and an alternate set without
traction tires available separately in the box. The
traction tires provide exceptional pulling power on
grades and through curves but should you prefer
the traditional appearance of steel drive wheels,
the alternate set can be easily installed by following
the steps on the next page.
SET-UP
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Right Wheel
Left Wheel

M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Installing Couplers
The coupler for the tender is mounted on the rear of the tender
using the Draft Gear Box that is supplied with the coupler hardware.
The Draft Gear Box with the Coupler installed is attached to the
tender by one screw. The lip of the Draft Gear Box Lid should be
placed against the outside of the rear sill of the tender.
To install the coupler on the tender:
- Place the tender upside down in a foam cradle or other soft
surface. Make sure that the tender will not roll over.
- Place the coupler in the Draft Gear Box. When the Draft
Gear Box is in a position so that the area covered with the
Draft Gear Lid is facing up, the coupler should be placed in the
Draft Gear Box with the Trip Pin hanging down.
- Carefully place the assembled Draft Gear Box and Coupler on
the rear of the tender chassis and insert the larger screw
supplied with the couplers to secure the Draft Gear Box.
Engine Pilot:
The pilot coupler supplied in the packaging is an HO scale
coupler. Prior to mounting the coupler to the engine, the coupler must be inserted into
the draft gear. The draft gear and coupler is then inserted into pilot and attached with a
single screw that is supplied in the packaging.
To install the coupler for the engine:
Place the engine upside down in a foam cradle or other soft surface. Make sure that
the engine will not roll over. Be careful of the small details on the boiler
-Insert the coupler into the slot in the pilot.
- Align the hole in the draft box with the tapped hole on the underside of the pilot and
attach the draft box using the mounting screw that is supplied in the packaging
-
.
SET-UP

First, position the engine upside down in a foam cradle or other soft surface, while
being careful of the small details on the boiler. Using a small flat blade
screwdriver, carefully remove the drive rod screws (2) on the 3rd set of drive
wheels. There's one on each side.
MAKE NOTE OF THE ECCENTRIC CRANKS IN REALTION TON
THE AXLE IF THE DRIVER BEING CHANGED. THE ECCENTRICS
MUST BE RE-ASSEMBLED IN THE SOME POSITION.
Remove the Brakeshoe detail along with the bottom plate by removing the 5 screws
indicated in the picture below. Set the cover aside and don't do any thing further
until you have completely read the Caution Note.
Caution Note
Before proceeding, there are a couple of important
things to know. First, under the square bushings on
each end of the axle are tiny springs. They are critical
to the proper operation of your engine and you don't
want to drop them. Next, look closely at the wheel set
and bushings and take note of their orientation.
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Driver springs
Screws
Brake Shoe Detail/bottom plate

Now, remove the two screws holding the gearbox cover in place. Then carefully
remove the gearbox cover and set it aside.
Next very slowly and carefully lift the wheel set upward. Keep a close eye out for
the driver springs as they sometimes stick to the bushings and lift out. If you drop
one, you'll need some really good eyes or a magnet to find them. If they should lift
out with the wheel set, carefully set them back into cavities from which they came.
Drop the replacement wheel set into the chassis. Make sure the bushings are in the
correct orientation. The small rectangular tabs on the front and rear must be
upward (with the engine upside down) toward the chassis bottom cover. The
smooth side faces the springs
Reinstall Gear Box Cover
Reinstall the chassis bottom cover with 5 screws and install the drive rod screws.
See, you've done it.
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Screws
Traction tire

Lubrication
Using light machine or household oil, apply a very small amount to all drive rods,
linkages, axles, and other moving parts as shown.
Your gearbox is properly greased at the factory and probably never needs service
however, if you run excessive hours pulling heavy loads, it's a good idea to remove
the 2 screws from the gearbox cover and re-grease using M.T.H. gear grease or
equivalent.
Lubricate Side Rods and Linkage(Both Sides) (LL)
Lubricate Axles (L)
(L)
(LL)
(L)
(L) (L)
(L)
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Body mount screws Body mount screw

FEATURES AND OPERATION
Now, for the fun stuff! Your new M.T.H. HO Steam Engine has more features and
operating capabilities than any HO engine ever built by any manufacturer. We're
going to walk you through everything she does in general but, you'll probably find a
few we forgot to mention on your own.
Modes of Operation
There are 3 modes of operation with different levels of features accessible in each.
We refer to them as analog DC, DCC, and DCS. Here's a little more explanation
before we get into the features of each mode.
Analog DC
This is when there is nothing connected to the rails except a conventional DC
power pack. These power packs generally have at least one variable output
controlled by a throttle of some sort and a means of reversing DC polarity on the
track to change the direction of your engine.
DCC or Digital Command Control
DCC is a popular digital command control scheme wherein the track power is also a
digital control signal. That is, using a DCC controller, you can communicate with
multiple engines and have them all moving at different speeds or moving in opposite
directions on the same track at the same time. The power/command signal remains
constant and engines are “commanded” to perform as desired. M.T.H. is new to
DCC but, we recognize it's importance to many HO operators. So, we loaded our
engine with more DCC features easily accessible to the operator than any HO
engine ever built previously. You DCC guys are in for a real treat!
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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As shown is for 18” radius, for larger radius operation move the bracket to the
opposite set of holes.
18” Radius
Greater Than 18” Radius
Screw Locations for
Radius Operation

FEATURES AND OPERATION
DCS or Digital Control System
While the acronyms are close, this is about where the similarities between DCS and
DCC end. Yes, they are both digital control systems however, M.T.H. DCS is NOT
DCC. There are several proprietary versions of DCC on the market but friend, this
is NOT one of them. M.T.H.'s DCS system is proven technology in the O and One
gauge markets and now, we've brought its power and simplicity it to you.
First, the power signal in DCS is NOT the command signal. Next, DCS employs a
fully functional bi-directional communication scheme opening a vast range of
advanced features and yet, is so simple and intuitive, you can enjoy them! No
programming tracks, bits and bytes, or conversion of binary to hexadecimal
numbers here! To add an engine in DCS, just press “ADD ENGINE.” After that,
If you want to start your engine, just press “START UP” or, to turn the smoke on
or off, just press “SMOKE.” No combinations of letters or numbers to remember!
We think you're really going to like this!
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Analog DC
Not much explanation is required here, and that's exactly why you run your trains
this way! Here's the good news, even if you like to keep it simple, your MTH HO
engine is packed with cool sounds, sights, and smells yes, smells, that you're going to
love.
Running the Engine
Set the engine on the rails, and apply DC power. Refer to the Set-Up section of this
guide for instructions on how to lubricate the chassis.
As you increase power, at about 6 volts, the lights and sounds will come on. Keep
going on up to about 8 and she'll move out! About 16 volts DC is adequate for
prototypical speeds however, your engine can handle up to 24 volts DC if you feel
the need for speed!
Changing Direction
If you flip the direction (polarity) switch on your power pack while the engine is
moving, it will gradually slow to a stop, and slowly accelerate back up to speed in the
opposite direction. This is an exclusive feature of MTH engines that we're sure
you'll enjoy. You can also change direction the old fashioned way by reducing
throttle until the engine stops, flip the direction switch, and then increase throttle
again. Either way is OK, we just thought a graceful transition from any speed
would be cool.
If you switch track polarity too slowly, the engine may stop abruptly and not move
in the reverse direction. This is normal. There is a feature we call “anti-jack rabbit”
that prevents the engine from taking off at high speeds when high voltage is applied
to the track instantly. Some direction switches have a “dead” spot where the power
is completely off during polarity changes. This can invoke the anti-jackrabbit
feature. The solution is to flip the direction switch more quickly. Don't worry you
won't hurt the engine.
Speed Control
Your engine is equipped with speed control. This feature is always active, even in
analog DC mode. Basically, your engine constantly measures track voltage and
converts this to a digital speed command. You should notice the speed remains
constant up and down grades, around curves, and with varying loads. This is no
accident. You've got the most precise speed control system available today.
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Sounds
In this mode, sound are pretty much automatic. If you're moving, you'll hear
chuffing sounds. If you increase or decrease the throttle quickly, you'll hear labored
or drift chuffing, respectively. Of course, if the engine has been sitting for a while,
the engineer may open the steam cocks and release the moisture, don't worry, he
never forgets to close them.
When your sitting at idle, there may be some maintenance done. You could hear
someone dopping the siderods or checking the water level in the tender and
filling it if necessary. Don't worry, all of this and more is just a normal part of
everyday operations.
When your moving at a pretty good clip and you reduce the throttle quickly, you may
hear the brakes squeak and squeal as the engineer applies them. Of course, they'll
stop when the engine does.
If things get too noisy, just locate the sound volume pot under the water hatch on
the tender and adjust the volume from maximum down to off, whatever suits you.
Turn it counterclockwise to reduce the volume or clockwise to increase it.
When you turn the smoke on, just give it a few seconds to warm up. It doesn't start
instantly. Once you see smoke gently streaming out (or not if you prefer) snap the
water hatch detail back in place and away you go.
Once on, like the sounds, the behavior is fully automatic. The model will puff out
smoke in exact synchronization with the chuffing sounds and driver rotation at 4 per
revolution. Amazing!
When the output begins to diminish significantly, add 10-12 drops to recharge the
unit. Again, give it a few seconds to warm back up. The cool fluid slows the action
for a few seconds. Also, watch out for bubbles that may block the stack. You may
need to gently blow down the stack to clear it.
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Smoke
Running your smoke unit couldn't be simpler. There is a switch hidden under the
water hatch on the tender. If this switch is on, your smoke is on. If it is off, your
smoke is off
Volume control
Smoke Switch
Controls located under water hatch on tender

Lighting
Now, this is an illuminating section (we couldn't resist). Your model is equipped
with a headlight, marker lights, cab interior light, and classification lights.
The first thing to know about the lighting is there aren't any bulbs. It's all LEDs so,
if you look for a section on how to replace them, you won't find it. You should
never have to.
As with sounds and smoke, in analog DC mode, lighting operation is fully
automatic. They're always on and behave appropriately.
The headlight functions under rule 17 and dims when stopped for a time or while
backing up. Of course, just as you begin to move forward, it goes bright to show
the way.
The cab light is always on so the engineer and fireman can always see clearly!
DCC Digital Command Control
Now, if your operating in this mode, you may very well know more about DCC
than we do so, we're going to stick to telling you about our engine in this operating
environment. First of all, in DCC mode, we brought all the features of analog DC
along and of course, added to them. Your new engine has more user features than
any DCC engine ever built. Some of them are even ahead of the world of DCC!!
Running the Engine
Set the engine on the rails, and apply DCC power. Refer to the Set-Up section of
this guide for instructions on how to connect the boiler and tender.
The first thing you will notice is the engine does absolutely nothing! Don't panic.
This is by design. M.T.H. HO engines never do anything in command mode until
told to do so, regardless of what brand DCC controller you use. In this way, you
could have a fleet of M.T.H. HO engines on the rails and they will remain shutdown
until you command them to start up.
F3 Start up/Shut Down
Select engine address 3 (factory default), press the F3 (Start Up/Shut Down) key,
and your engine will start-up. Lights, sounds, smoke, ACTION!!! Roll the throttle
and away you go. Our models are compatible with 14, 28, and 128 speed steps. We
strongly recommend 128 because in this mode, speed steps correspond directly to
scale speeds. That is, speed step 10 = 10 smph, speed step 47 = 47 smph, etc. You
get the idea. When your done, press the F3 key again, your engine will shut down.
To be clear, pressing F3 when the engine is shut down will start it up. Pressing F3
when the engine is started up will shut it down. Pretty clever, eh?
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Sounds
As in analog DC mode, the default sound arrangement is automatic. So, you can
just run your engine and its sounds will follow the action. But, you operate in DCC
for a reason. You want access to more features, right? Well, depending upon the
capabilities of your DCC controller, you now have access to a range of sound
features including bell, whistle, PFA, engine sounds on/off, master volume,
Doppler, and more.
Here's a brief description of commonly used sound features.
F1 Bell
Toggles bell sounds on/off. Listen to the last half ring of the bell when it stops!
F2 Whistle
Blows the whistle for as long as it's on. There are several different ending signatures
depending on how long you hold the button down. Check it out!
F4 PFA
PFA in MTH lingo stands for passenger and freight announcements. Since your
engine provides freight service, you'll hear freight yard sounds.. PFA is a very
popular sound feature that's a staple in almost all MTH products. We had to give
you this!
There are 4 sound sequences or segments in PFA. You advance through them at
your command. Each segment has a minimum time of ~10 seconds but more
sounds play the longer you listen.
When running the engine, simply press the F4 key to activate PFA. When you bring
the engine to a stop, the arrival sequence will play. You can remain in this segment
as long as you like.
Press F4 again, and advance to disembarking sequence. Again, you can listen to this
sequence as long as you like.
Press F4 again, and advance to the embarking sequence. Again, you can listen to
this sequence as long as you like.
Press F4 again, and advance to the departure sequence. After the engineer says
“Just keep the steam up” and the engine will automatically pull out and resume the
speed and direction of when you entered the feature. The bell will ring for a short
while and then turn off automatically.
F6 Engine Sounds
Toggles engine sounds on/off. Think of this like a mute button. When the engine
sounds are off, you can still ring the bell or blow the whistle or run the engine, it just
helps if you have to answer the phone.
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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F7 Master Volume
This command cycles through 9 volume settings from off to max. Each press
advances to the next cycle. Unlike the F6 engine sounds command, when the
master volume is set to off, no sounds can be heard.
If your DCC controller has more F functions, you can access even more features.
Check out the complete list in the chart at the end of this section.
Smoke
The smoke system in DCC mode operates exactly as it does in analog DC mode
with the added benefit of being able to turn it on or off remotely. Pressing F8 on
your DCC controller will toggle the smoke unit on and off again.
The manual smoke switch under the water hatch on the tender must be “on” for the
F8 key to function. When the smoke switch is off in DCC mode, the smoke is
always off.
In the future, as DCC controllers expand to include more functions, you'll be able to
cycle through low, medium, and high output settings in DCC. Refer to the DCC
function chart for details.
Lighting
As with other feature categories, lighting in DCC mode operates just like analog DC
with regard to rule 17, constant brightness and directional behavior. See that section
for details. DCC provides some additional control to suit your preferences.
F0 Headlight
Toggles the headlight on/off.
F5 Cab Interior Light
Toggles all lighting on/off, including Marker and Classification LED's. When on, all
lighting behaves automatically as described elsewhere. When F5 is off, all lighting is
off.
M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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Add Smoke Fluid
Volume control
Smoke Switch

M.T.H. HO 2-8-4 NKP Berkshire Steam Engine
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More DCC
Okay, we've walked you through the basic features and functions available in DCC
(F0..F8) but, there is much, much more. In fact, we've filled up functions F9
through F28. Some controllers are available today that provide easy access to F9
through F12 however, we don't know of any that allow you to press a button for
F13 through F28. When the DCC controllers expand to include these functions,
your MTH HO engine will be waiting. Here is a list of the F9 through F28
functions present in your engine with a brief description of how they work.
F9 Forward Signal Sound
Plays 2 short whistle toots to signal the engine is moving forward
F10 Reverse Signal Sound
Plays 3 short whistle toots to signal the engine is moving in reverse
F11 Coupler Slack Sound
When sitting still, arms the system to play the sound of coupler slack being pulled
out as the engine moves.
F12 Grade Crossing Whistle
One button push will blow the whistle for 1 long, 1 short, and 2 longs to signal for
a grade crossing.
F13 Doppler
Activate one shot doppler
F14 Extended Start UP
Plays a longer, more detailed and realistic start up sound sequence.
F15 Extended Shut Down
Plays a longer, more detailed and realistic shut down sound sequence.
F16 Labor Chuff
Plays deeper and sharper chuffing sounds to simulate a heavy load
F17 Drift Chuff
Plays softer and lighter chuffing sounds to simulate a light load
F18 Smoke Volume
Cycles smoke volume through min, med, and max output levels.
F19 Whistle Toot
Plays a single short whistle toot so you can make up your own signal patterns.
F20 Coupler Close
Plays the sound of 2 couplers crashing together and closing.