Esu LokSound User manual

1
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
User Manual
LokSound
for version V3.0
1st edition , July 2004

2user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Contents
Copyright 2004 by ESU electronic solutions ulm GmbH & Co KG. Irrtum, Änderungen die dem technischen Fortschritt dienen,
Liefermöglichkeiten und alle sonstigen Rechte vorbehalten. Elektrische und mechanische Maßangaben sowie Abbildungen ohne Gewähr.
Jede Haftung für Schäden und Folgeschäden durch nicht bestimmungsgemäßen Gebrauch, Nichtbeachtung dieser Anleitung, eigenmäch-
tige Umbauten u.ä. ist ausgeschlossen. Nicht geeignet für Kinder unter 3 Jahren wegen verschluckbarer Kleinteile. Bei unsachgemä-
ßem Gebrauch besteht Verletzungsgefahr durch funktionsbedingte Kanten und Spitzen. Märklin®ist ein eingetragenes Warenzei-
chen der Firma Gebr. Märklin und Cie. GmbH, Göppingen. ESU electronic solutions ulm GmbH & Co. KG entwickelt entsprechend
seiner Politik die Produkte ständig weiter. ESU behält sich deshalb das Recht vor, ohne vorherige Ankündigung an jedem der in der
Dokumentation beschriebenen Produkte Änderungen und Verbesserungen vorzunehmen.
1. Introduction 3
2. Characteristics of LokSound decoders ......................................................................................................................... 4
3. Installation of LokSound decoders .............................................................................................................................. 5
3.1 Connecting LokSound decoders in HO, TT, N, 0 gauge models ............................................................................. 5
3.1.1 Installation Requirements ....................................................................................................................................... 5
3.1.2 Engines with DCC interface ................................................................................................................................... 5
3.1.3 Engines without interface ....................................................................................................................................... 6
3.1.3.1 Connecting DC motors ....................................................................................................................................... 7
3.1.3.2 Connecting universal motors .............................................................................................................................. 7
3.1.4 Connecting the speaker ......................................................................................................................................... 8
3.1.5 Connecting auxiliary function devices ..................................................................................................................... 8
3.1.6 Connecting a wheel sensor .................................................................................................................................... 8
3.2 Connecting LokSoundXL decoders .......................................................................................................................... 9
3.2.1 General hints .......................................................................................................................................................... 9
3.2.2 Wiring diagram .................................................................................................................................................... 10
3.2.3.1Connecting a DC- or coreless motor ................................................................................................................. 10
3.2.3.2 Connecting a universal motor (with field coils) ................................................................................................ 10
3.2.4 Installing the speaker .......................................................................................................................................... 10
3.2.5.1 Auxiliary function outputs ................................................................................................................................ 13
3.2.5.2 Connecting headlights and back-up lights ..................................................................................................... 13
3.2.5.3 Connecting auxiliary function devices .............................................................................................................. 13
3.2.6.1 Connecting a wheel sensor ............................................................................................................................. 14
3.2.6.2 Connecting reed contacts (with magnet) ........................................................................................................ 14
3.2.6.3 Connecting mechanical contacts ...................................................................................................................... 14
3.2.6.4 Connecting a Hall sensor ................................................................................................................................. 14
3.2.7 Connecting additional reed contacts .................................................................................................................. 14
4. Set-up and installation .............................................................................................................................................. 15
4.1 Analogue operation ................................................................................................................................................ 15
4.1.1 DC operation ....................................................................................................................................................... 15
4.1.2 AC operation with conventional Märklin® controller ......................................................................................... 15
4.2 Digital operation ..................................................................................................................................................... 16
4.2.1 Using Märklin® 6021 ......................................................................................................................................... 16
4.2.2 Using DCC (Lenz, Intellibox, etc) ......................................................................................................................... 16
4.3 Resetting the decoder to factory settings ............................................................................................................... 16
5. Adjusting decoder parameters .................................................................................................................................. 16
5.1 The CV concept of LokSound decoders ................................................................................................................. 16
5.2 Important settings of LokSound ............................................................................................................................ 17
5.2.1 Load control (Back EMF) ...................................................................................................................................... 17
5.2.2 Speed curve ......................................................................................................................................................... 18
5.2.3 Function outputs ................................................................................................................................................. 19
5.2.4 Sound adaptation ............................................................................................................................................... 20
5.2.5 Brake sections ...................................................................................................................................................... 21
5.2.6 Märklin®addresses ............................................................................................................................................. 22
5.3 Adjustment of CVs .................................................................................................................................................. 22
5.3.1 Using LokProgrammer ......................................................................................................................................... 22
5.3.2 Using DCC controllers .......................................................................................................................................... 22
a5.3.3 Using Märklin® 6021 ....................................................................................................................................... 23
6. Frequently asked questions (FAQ) ............................................................................................................................. 23
7. List of all supported CVs ........................................................................................................................................... 25
8. Technical data ............................................................................................................................................................ 46
8.1 Technical data of LokSoundXL ................................................................................................................................ 46
9. Customer service - support and assistance ............................................................................................................... 48

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user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
1. Introduction
Congratulations on purchasing a LokSound decoder.
With LokSound your engines sound like the prototype.
You will soon notice that your LokSound equipped
engines are the center of attraction on any layout.
Of course, you would like to install this decoder
immediately, but first we kindly request you to read
the following remarks:
Please read this manual carefully before carrying
out the installation!!! Although LokSound
decoders are very robust, incorrect wiring may
destroy the module!
Due to its factory settings your new LokSound decoder
can generally be used as is. It offers a multitude of
options to help you adjust your LokSound decoder
even better to your model. Please familiarize yourself
with the decoder before installing it and adjusting any
parameters. Also note the recommendations
regarding installation.
Important warning:
•LokSound decoders are designed for use in model
railways only
•Avoid mechanical force or pressure on the
decoder
•Do not expose to wet and humid conditions
•Do not remove the heat shrink sleeve on the
decoder
•Never solder on the circuit board, extend cables
if necessary
•Never wrap the decoder in insulation tape, since
this may cause overheating
•Always disconnect the circuit when installing the
decoder
•Make sure that neither the LokSound decoder
nor any blank wire ends may come into contact
with the engine chassis (risk of short circuit).
Cover any blank ends of unused wires.
•Make sure that no wires are squeezed or cut by
the model’s transmission parts when reassembling
the engine
Introduction
Handle the speaker with extreme care: Do not
touch the membrane or apply pressure! Solder
speaker connections quickly and only at the
intended contacts! Pay close attention to the
instructions for installing the speaker!
If you adhere to these warnings your LokSound
decoder will reward you with trouble-free operation
and long life.
ESU GmbH & Co. KG, in July 2004
This manual has several chapters explaining step by
step how to proceed:
Chapter 2 provides an overview of the characteristics
of LokSound and LokSoundXL decoders.
Chapter 3 describes installation and connection. In
chapter 3.1 installation of LokSound decoders for HO,
TT, N and O gauge are explained while chapter 3.2
deals with the LokSoundXL for larger scale models (O,
I, II,...).
LokSound decoders are suitable for most digital
command control systems. Chapter 4 provides an
overview on which digital and analogue systems may
be used to operate LokSound decoders as well as some
particularities with certain systems.
If you want to modify the preset running
characteristics and/or sound effects we strongly
recommend to read chapter 5. Here you will gain an
insight regarding the many options and how to adjust
various parameters. You will also learn how to reset
the decoder to the factory settings. The ESU
LokProgrammer (Art. No. 53450) makes setting any
parameter of your LokSound decoder as easy as making
a phone call or sending an email.
Chapter 6 contains the answers to Frequently Asked
Questions.
In Chapter 7 a table provides all you need to know
regarding the programming of decoder characteristics
as outlined in chapter 5.

4user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
2. Characteristics of the LokSound decodersCharacteristics of the LokSound decoders
Characteristics of the LokSound decodersCharacteristics of the LokSound decoders
Characteristics of the LokSound decoders
The LokSound decoder is a universal electronic module
for installation in model engines of most common
scales. We recommend LokSound for all engines in TT,
HO gauge as well as smaller engines in O gauge.
LokSoundXL is best suited for larger scales such as O,
I, II and G gauge. ESU LokSound decoders
revolutionize any model train layout. They intelligently
combine a sophisticated digital decoder and a digital
sound module. With LokSound you can run your
engine with load control and many auxiliary functions
while enjoying the original sound of the prototype.
Its unique features provide flexibility and safety in
operation that you have come to expect from a state-
of-the-art decoder. Even future standards are no
problem for LokSound: its flash technology allows
adaptation to the latest developments.
Multi-protocol operation: LokSound decoders und-
erstand both, the commonly used Märklin® /
Motorola® – format and the NMRA / DCC - system.
Thus LokSound may be used with almost all currently
available digital command control systems. Amongst
others LokSound was tested with:
• Arnold Digital® (DCC system)
• Lenz Digital Plus®
• ROCO® digital is cool®
• Märklin® 6021
• Uhlenbrock® Intellibox (DCC+ Motorola® system)
• ZIMO MX-1 (DCC-Betrieb)
• Fleischmann® Twin-Center
• LGB MZS Steuerung
Automatic change between all four operating modes
during operation (AC analogue, DC analogue, DCC
digital, Märklin® digital)
Universal motor connection: All types of motors
commonly used for model trains may be connected
to LokSound:
• DC motors (e.g. Bühler, Mabuchi)
• Coreless motors (e.g. Faulhaber, Maxxon)
• Alternating current
High motor pulse frequency: The pulse frequency of
32 kHz (!) assures absolutely smooth running. Thus
the motor runs silently and without any whine, heat
generation is minimized and lifetime is prolonged. Even
coreless motors may be operated with LokSound
decoders without any problem.
Characteristics of the LokSound decodersCharacteristics of the LokSound decoders
Characteristics of the LokSound decodersCharacteristics of the LokSound decoders
Characteristics of the LokSound decoders
Motor control: LokSound offers fourth generation
load control. It may be adapted to suit each individual
motor and can be switched off. Suitable for DC motors
and coreless motors. Therefor your engine will always
travel at the selected speed, no matter how large the
load is or whether the engine is traveling up or down
gradients.
4 function outputs: In addition to the two lighting
outputs, two more function outputs are available:
switch on a smoke generator or the interior lighting
or activate a digital coupler by pressing a button!
Lighting effects and individually dimmable lamps help
to make your models even more prototypical and you
will have lots of fun.
Brake sections: LokSound decoders recognize (and
respond to) the most common brake systems: besides
the Lenz brake generator, the Märklin® brake track
is also supported.
Circuit protection: the motor output and all function
outputs are protected against short circuit.
Please make sure that the total current does not
exceed the maximum permitted current for the
function outputs and avoid short circuits
between the outputs: LokSound circuits are
protected, but an external voltage at the terminals
of a function output may destroy the circuitry.
Analogue operation: LokSound decoders may be
operated on AC- and DC layouts without any problems.
Easy programming: Even with Märklin® 6021 all
functions may be changed comfortably without
opening the engine.
A digital, four-tone sound module with unique
characteristics:
Prototype sounds: sounds of prototype engines were
sampled using high fidelity microphones and recorded
digitally on the flash memory module. Thus your
engines sound exactly like the prototype!
With four independent channels your engine sounds
even more realistic since you can simultaneously add
3 sound effects to the running sound. Pumps, power
switches and squealing brakes can all be heard at the
same time. The exhaust chuffs of steam engines vary
with the revs of the drivers and the load. Now you
can really hear your engine work. Diesel engines can
now simulate the reduced revs of the diesel while the
engine is coasting. The running sound and the sound

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user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Installation of LokSound decodersInstallation of LokSound decoders
Installation of LokSound decodersInstallation of LokSound decoders
Installation of LokSound decoders
of the fans (blowers) in electric engines is now separa-
te. Additional sound effects can be activated by
pressing a function button (F1 – F12). Random sounds:
sound effects such as air pump, water pump, shoveling
coal, discharging compressed air, etc. are randomly
triggered. Such sounds can be configured differently
for stationary or moving engines.
3. Installation of LokSound decodersInstallation of LokSound decoders
Installation of LokSound decodersInstallation of LokSound decoders
Installation of LokSound decoders
3.1. Connecting LokSound decoders in HO,
TT, N, O gauge models
3.1.1 Installation requirements
The engine must be in good mechanical condition:
only an engine running smoothly in analogue mode
should be modified for digital operation. An engine
running poorly in analogue mode will not operate
satisfactorily in digital mode – even with the best
digital decoder. Check and clean or replace any wear
and tear parts such as motor brushes, wheel contacts,
lamps etc.
Always remove the engine from the track when doing
maintenance work or modifications. Make sure that
no voltage is applied – intentionally or accidentally –
while you work on the model.
LokSound decoders have a certain size: make sure,
that the decoder fits easily into the engine, that no
pressure is applied when replacing the housing onto
the chassis and that no wires are squeezed between
other parts. Further, make certain that moving parts
such as transmissions and trucks are not obstructed
by wires.
Never pack a LokSound decoder in foam pads etc.
The decoder heats up during operation; good heat
dissipation is essential.
Electronic components are sensitive to
electrostatic charges: always make sure that your
work place is grounded. If necessary, use an
earthed wristband.
When installing the decoder make sure that no metal
part of the chassis touches any components of the
decoder.
In conjunction with trained and experienced specialists
ESU GmbH & Co. KG offers a conversion service
(modification from analogue to digital).
Pin Description Colour code
1 motor terminal right orange
2 back-up light yellow
3 function F1 green
4 current pick-up 1 black
5 motor terminal left grey
6 headlight white
7 common (+pole) blue
8 current pick-up 2 red
Figure 1: NEM 650/652 interface
3.1.2 Engines with DCC interface
LokSound is supplied with an 8-pin plug as per NEM
650/652 (NMRA S9.1/9.2) as shown in figure 1
Installation in engines with NEM socket is particularly
easy:
•Remove the body! Follow the instructions in the
manual of the engine!
•Remove the analogue plug or directional relay. Please
keep the plug / relay for future use
•Insert the decoder plug with pin 1 (the side with
the red/orange wire) into the side of the socket
that is usually marked with *, +, • or 1. Take care
not to bend any pins. Do not rely on the assumption
that the wires have to lead in a certain direction,
the marking is the only valid reference.
•Place the decoder in a suitable location within the
engine and fasten it with double sided tape or a
drop of hot glue.
•Now fix the speaker in a suitable place. See chapter
3.2.4
red
black

6user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Engines without interface
3.1.3 Engines without interface
Not every engine has a digital interface and thus the
wiring becomes more elaborate:
Disconnect any existing wires within the engine and
any connection to the chassis. Both motor contacts
must be isolated, make sure there isn’t any connection
to the chassis, the wheels or the pantographs. This
may easily be overlooked particularly in Fleischmann®
models!
After installing the decoder please check all
connections with an Ohmmeter and look out
for any short circuits between motor- and current
pick-ups.
How to proceed depends on how the headlights and
other functions are wired in the engine:
a) If headlights and functions are isolated from the
engine chassis (free of any voltage) proceed as per
figure 2.
Figure 2: Wiring of engines with DC motor and isolated functions
green
AUX 1
LokSound
yellow withe
light
front light back
greyorange
engine
black red
blau
2 x dark brown
speaker100Ω
LokSound
violet
AUX 2 LokSound
speaker100Ω
LokSound
green
AUX 1
yellow withe
light
back light front
greyorange
engine
2 x dark brown
red
black
Lokgehäuse
violet
AUX 2
Figure 3: Wiring of engines with DC motors and functions with the common pole connected to the chassis

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user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Connecting DC motors
b) Headlights and functions may be connected with
their common to the track voltage (e.g. almost all
Märklin® -engines and older Fleischmann® or
ROCO® engines) as per figure 3
Don’t get confused by the fact that both figure
2 and 3 show how to wire DC - and coreless
motors. How to wire a universal motor (Märklin®)
is shown in figure 5.
• Connect the red wire to the right rail pick-up (or
centre pick-up in AC models), the black wire to the
left rail pick-up (common rails in AC models).
• Connect the backup lights to the yellow wire, the
headlights to the white wire.
• Connect the green wire to the function output
AUX-1. Allocate the function button later.
• Connect the purple wire to the function output
AUX-2. Allocate the function button later.
• Connect the speaker to the two dark-brown wires.
• If the headlights and functions are isolated from
the chassis (see figure 2) connect all commons to
the blue wire. Make sure the blue wire has no
contact to the engine chassis.
3.1.3.1 Connecting DC motors
• Connect the orange wire with the motor terminal,
that was originally wired to the right wheel pick-up
(centre pick-up in AC models).
• The grey wire goes to the terminal, that was
originally connected to the left wheel pick-up
(common rails for AC models).
• Exchanging the wires changes direction of travel.
• Some engines with the Märklin® 5-pole high
performance drive may have 3 RFI suppressors solde-
red to the motor shield.
• The two suppressors that connect the motor
terminals with the motor chassis must be removed
(see figure 4).
3.1.3.2 Connecting universal motors
Figure 5 shows how a universal motor (e.g. AC motor
by Märklin®) is connected to a LokSound decoder:
• Connect the orange wire with the motor terminal
that was originally connected with the center pick-
up.
• Connect the grey wire to the motor terminal that
was originally connected to the common / wheel
pick-up.
• Exchanging the wires will change direction of travel.
• Solder an inductor (choke) with at least 3,9 mH to
each motor terminal. They are available as spare
parts from Märklin® under article number 516520.
• The RFI suppression inductor remains attached to
the collector terminal of the motor and has to be
soldered to the blue wire.
Please note:
If a universal motor is connected LokSound will
automatically deactivate Back EMF Control. The
principle of Back EMF Control does not work
with universal motors.
Figure 4: 5-pole Märklin® high performance drive
LokSound
grey
orange
blue
alternating
current motor
Figure 5: Wiring to Märklin® universal motor
inductor
3,9 µH
greyorange
remove capacitor !

8user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
3.1.4 Connecting the speaker
LokSound decoders may only be used with the
speakers supplied by ESU electronic solutions ulm
GmbH & Co. KG. They have an impedance of 100
Ohm. The use of speakers by others may cause
considerable distortion and in extreme cases even
destroy the LokSound decoder.
The correct position of the speaker is crucial to achieve
high quality sound. A speaker that is installed without
a resonance chamber will not generate good sound.
Therefore carefully select the location and sound
chamber for the speaker.
The speaker must be installed in such a way that the
sound waves are not unduly blocked.
Please handle speakers with extreme care: don’t
apply pressure or touch the membrane! The
speaker’s magnets are very powerful! Keep all
metal items away and secure the speaker firmly
when soldering. The soldering iron may pull the
speaker due the magnetic field and destroy it.
Connect the speaker to the 2
dark brown wires of the
LokSound module. Make sure
that you use a small soldering
iron (max. 20 W) and only heat
the marked spots as shown in
the figure (close to the edge
of the small contact plate).
Polarity is not important
An optimal sound effect is achieved by putting the
speaker into a sound chamber, which is supplied with
the speaker. This will increase the sound pressure and
channel the sound in one direction. Without sound
chamber the sound effect may be unsatisfactory. Feed
the speaker wires through a small hole in the sound
chamber.
Connecting the speaker / auxiliary function devices / wheel sensor
3.1.5 Connecting auxiliary function devices
Any load may be connected to the lighting and
auxiliary function outputs as long as it doesn’t exceed
the maximum current (see technical data in the
appendix of this manual). Note that the overload
protection of the decoder reacts quickly and will switch
off all functions immediately in case of an overload or
short circuit.
Therefore use only 16 V lamps (or a higher
voltage) and a maximum nominal current of
50mA: incandescent lamps have a high starting
current and may trigger the overload protection
during switch-on.
Use only digital smoke generators (e.g. Seuthe No.
11) for engines whose lighting and auxiliary function
outputs are connected as shown in figure 2. Other
smoke generators draw too much current. There are
smoke generators with more than 250mA nominal
current on the market!
Engines that are wired as shown in figure 3 need an
analogue smoke generator e.g. Seuthe No. 10.
Make sure that the total current for the function
outputs does not exceed the permitted current
rating and avoid short circuits between outputs.
Although the output circuits are protected, a
high voltage on the terminals or a short circuit
may cause damage.
3.1.6 Connecting a wheel sensor
To synchronize the exhaust chuffs with the revs of
the drivers an external sensor can be (but does not
have to be) used. The sensor input is described in
figure 6.
LokSound decoders support reed contacts or
mechanical contacts.
If a reed contact is to be used a miniature magnet
(available at hobby shops) must be attached to the
driving wheel axle in such a way that the magnet
releases the reed contact once every turn. Miniature
reed contacts have been proven to be very reliable.
They are available at electronic specialist stores.
Suitable magnets may be bought at model train shops.
(e.g. Mini-track magnets) which might have to be
shaped to fit.
speaker
chamber
solder here!

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user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Connecting the LokSoundXL decoder
Please note, that RFI suppression may be achieved
by different means. We recommend to leave the
chokes supplied with the engine in the circuit.
3.2.1 General hints
When modifying an engine for digital operation please
take note of the following:
Take care that no motor terminal is connected to the
wheel pick-ups or pantographs, otherwise the decoder
may be destroyed.
Separate all connections including possible electrical
contact via the engine chassis.
The LokSoundXL has a certain size and requires
adequate space. Take care, that the decoder fits easily
into the engine, that no pressure is applied when
replacing the housing onto the chassis and that no
wires are squeezed between other parts. Further, make
certain that moving parts such as transmissions and
trucks are not obstructed by wires.
Fix the decoder with double sided adhesive tape, some
hot glue or screws, but never pack it into foam pads,
etc. The decoder heats up during operation and good
heat dissipation is essential.
After installation please check all connections with an
Ohmmeter and search for possible short circuits,
particularly between the motor terminals and the wheel
pick-ups.
All double pole (mechanical) contacts that are isolated
(not connected to the chassis) are suitable.
Before the wheel sensor will work various CVs have to
be programmed. See chapter 5.2.4 on page 21.
3.2. Connecting the LokSoundXL decoder
The LokSoundXL decoder is partly supplied as an open
circuit board. Do not remove the shrink sleeve, as
there will be no warranty. Like any electronic device
handling the LokSoundXL requires some care:
Please make absolutely certain that the module
does not have contact with any metal parts: risk
of short circuits!
The LokSoundXL has a few more terminals required
for the sound effects. LokSoundXL is supplied with
screw terminals for easy wiring without soldering. Please
note the following:
• LokSoundXL decoders have two screw terminal strips
(No. 1 + No. 2):
• Please make sure, that you always use the correct
terminal!
• Make certain, that the cable size is large enough
for the terminals (min 0.20mm2)
• Tinn the ends of the wires or use cable glands
• Take care to avoid short circuits while inserting the
wires into the terminals.
• Use a suitable screw driver. Hold down the screw
terminals while tightening the screws to avoid any
mechanical force on the circuit board.
• Provide adequate RFI suppression of the motor: a
100 nF capacitor parallel to the motor terminals is
the absolute minimum.
Figure 6: Connecting a wheel sensor
reed contact
drive wheel
miniature
magnet

10 user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
3.2.2 Wiring diagram
Figures and 9 show the general wiring layout for
LokSoundXL decoders:
The left terminal strip (No. 1) contains all connections
required for running and sound. The right terminal
strip (No. 2) is solely for auxiliary function outputs.
Please make sure you do not confuse the
terminals. Wrong wiring may cause damage or
destruction of the decoder – despite the
protective circuitry!
Connect the right wheel pick-up to terminal 1-1 and
the left one to terminal 1-2. Terminals 1-3, 1-4 and 1-
6 are reserved for the motor. For DC and coreless
motors only terminals 1-3 and 1-6 are used. Details
are described in chapter 3.2.3.1 and 3.2.3.2
A wheel sensor can be wired to terminals 1-4 and 1-
5. Details are explained in chapter 3.2.6.1
The speaker is to be connected to terminals 1-8 and
1-9. Installation of the speaker is explained in chapter
3.2.4. Terminal strip 2 serves for the wiring of
headlights and auxiliary functions only.
Please note, that the common of all outputs is
terminal 2-9 (positive voltage). Details are
explained in chapter 3.2.5.2 and 3.2.5.3.
3.2.3.1 Connecting a DC- or coreless motor
According to the general wiring diagram on page 11.
Please note, that any suppression chokes should remain
in the motor leads. The parameters for load control
vary depending on the type of motor (Bühler, Mabuchi,
Faulhaber) and have to be adjusted accordingly. Also
refer to chapter 5.2.1
When wiring the motor, please note that terminals 1-
3 and 1-6 are used (the ones in between remain
disconnected)!
3.2.3.2 Connecting an alternating current
(with field coils)
To simplify the modification of older I gauge models
with universal motors (with field coils) the motor can
be wired straight to the LokSoundXL decoder:
The field coil is wired to the terminals 1-3 and 1-6.
Swapping the terminals results in change of direction.
The suppressor choke remains with one contact on
the motor terminal. The other lead is wired to termi-
nal 1-4 of the decoder. As soon as a universal motor
is connected to LokSoundXL, load control is
automatically switched off. Universal motors are not
suitable for load control.
3.2.4 Installing the speaker
You may only use the specially adapted speakers (1
Watt, 32 Ohm) provided by ESU electronic solutions
ulm GmbH & Co. KG for LokSoundXL decoders.
Other speakers will distort the sound and may cause
damage or destruction of the decoder.
We cannot recommend the use of speakers designed
for HO decoders either.
The appropriate location within the model is crucial
for excellent sound reproduction. A speaker without
the sound chamber will never generate excellent
sound. Therefor carefully select the space for the
speaker and the sound chamber within the model.
The speaker must be installed in such a way that the
sound waves are not unduly blocked.
Connecting the LokSoundXL decoder
rail
right
speaker
alternating
current motor 1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
Figure 7: Anschluss an Märklin® Allstrommotor
inductor left

11
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
speaker
Figure 8:
Connecting the LokSoundXL decoder
Figure 8a: Setting for 8 - 16 OhmFigure 8b: Setting for 16 - 32 Ohm
2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9
1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9
leftrail
right
DC Motor

12 user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Connecting the LokSoundXL decoder
Figure 9:
2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9
1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9
headlights back
headlights front AUX6 - Reed-In2 AUX5 / Reed-In1
AUX4 AUX3 AUX2 AUX1
common (V+)

13
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Connecting the speaker / headlights / auxiliary functions
Please handle speakers with extreme care: don’t
apply pressure or touch the membrane! The
speaker’s magnets are very powerful! Keep all
metal items away and secure the speaker firmly
when soldering.
Connect the speaker to the
terminals 1-8 and 1-9 of the
LokSoundXL module. Make
sure that you use a small solde-
ring iron (max. 20 W) and only
heat the marked spots as
shown in the figure (close to
the edge of the small contact
plate). Polarity is not
important. Make sure no solder drips on
the membrane.
An optimal sound effect is
achieved by putting the
speaker into a sound chamber,
which is supplied with the
speaker. This will increase the
sound pressure and channel the
direction of sound. Without
sound chamber the sound
effect may be unsatisfactory.
Feed the speaker wires through a small hole in the
sound chamber.
3.2.5.1 Auxiliary function outputs
LokSoundXL has 8 (!) function outputs, two of which
are reserved for headlights. The remaining 6 (AUX 1
through AUX 6) can be used for lighting, smoke
generators, couplers, etc.
However, before you can use these outputs you have
to activate them as described in chapter 5.2.3.
The brightness of the outputs can be adjusted
individually in 15 steps for each output. Each function
output can also be programmed to provide certain
lighting effects (blinking, etc.).
3.2.5.2 Connecting headlights
Headlights and back-up lights are to be wired to ter-
minal block 2 as per figure 3.
Generally the outputs will have the full track voltage
(between 14 and 25 Volts, depending on the power
supply). Therefor you should equip your engine with
lamps suitable for that voltage. In older models the
lamps may be connected to the chassis (e.g. Märklin).
In this case you may not wire the return from the
lamp to the terminal 2-9. Thus the lamp works against
the common return (chassis).
In many models LEDs or 1.5 Volt lamps are used. They
can also be operated with LokSoundXL decoders, but
not without some preparation: use a 100 Ohm / 0.5
Watt resistor in series with each LED or 1.5 Volt lamp.
You also have to reduce the output voltage to 1,5 V
by setting the appropriate CV as per chapter 5.2.3.
When using 1.5 Volt lamps it is not sufficient to reduce
the brightness (dimming level) via the CV. Due to the
PWM-mechanism the full voltage will be applied for
short intervals. The lamps have to be replaced by others
that are suitable for 19 Volts.
3.2.5.3 Connecting auxiliary functions
The function outputs AUX 1 to AUX 6 can be used
for many different purposes, such as switching a
smoke generator, interior lights, automatic change of
headlights according to the rules of the Swiss Railways
(SBB), etc. Please note, that the outputs are intended
for resistive loads such as lamps, smoke generators,
relays, etc. The direct connection of a motor is not
recommended due to its inductive peaks. Use a relay
to switch the motor.
Each output can be wired against terminal 2-9 or
against the common return (chassis).
speaker
chamber
solder
here!

14 user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
3.3.6.1 Connecting a wheel sensor
To synchronize the exhaust chuffs with the revs of
the drivers an external sensor can be used. The sensor
input is available on terminal 1-7.
The LokSoundXL decoder supports reed contacts,
mechanical contacts or Hall sensors. Many models
(e.g. Bachmann or Märklin®) are supplied complete
with mechanical contacts.
3.2.6.2 Connecting a reed contact with
magnet
If a reed contact is to be used one miniature magnet
(available at hobby shops) for each exhaust chuff must
be attached to the driving wheel axle in such a way
that the magnet triggers the reed contact once every
turn.
Miniature reed contacts have been proven to be very
reliable. They are available at electronic specialist stores.
Suitable magnets may be purchased at model train
shops. (e.g. mini-track magnets).
3.2.6.3 Connecting a mechanical contact
Many models are supplied complete with a mechanical
contact. It has to be connected in the same way as a
reed contact, namely to terminals 1-4 and 1-7.
All double pole (mechanical) contacts that are isolated
from the chassis may be used.
Connecting auxiliary functions LokSoundXL decoder
3.2.6.4 Connecting a Hall sensor
A Hall sensor is an electronic circuit that responds to
an alternating magnetic field similar to a reed contact.
It is, however, far more precise than a reed contact.
Hall sensors are easier to adjust since the distance
between sensor and magnet is not critical. A commonly
used hall sensor, that can be purchased via mail order
is the TLE4905 by Siemens / Infineon.
The terminal Vs of the TLE4905 has to be wired to
terminal 1-4, GND to terminal 1-5 and the Pin Out-
put to terminal 1-7.
3.2.7 Connecting additional reed contacts
LokSoundXL decoders from version 2.0 have two
additional inputs that can trigger various functions.
The main purpose of these inputs is to trigger sounds
by means of track magnets. A reed sensor has to be
wired to one of these inputs and a magnet is to be
placed at the appropriate location on the layout. Every
time the engines passes that spot a sound effect will
be triggered.
With the aid of these sensors users of the LGB MZS
with Lokmaus can also trigger the many sound effects
of the LokSoundXL decoder.
The inputs REED-IN1 and REED-IN2 share the
terminals 2-7 and 2-8 with the auxiliary function
outputs AUX 5 and AUX 6. Therefor AUX 5 and AUX
6 are not available if you use these inputs.
Figure 10b: Connecting a Hall sensor
TLE4905
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
GND
Output
Vs
miniature
magnet
drive wheel
drive wheel
miniature
magnet
reed contact
Figure 10a
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9

15
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Set Up and installation of the decoder
After you have checked above points you may switch
on the power.
We strongly recommend to carry out this initial check
on a track section with overload protection.
Programming tracks of modern digital systems offer
this protection. Our LokProgrammer (part Number
53450) also offers extremely reliable overload
protection.
The pre-set engine address is 03.
Does the engine travel in both directions?
Turn the lights on: are they operating correctly? If the
LokSound decoder was built into an engine with NEM
/ DCC interface: check if the plug has been inserted
correctly.
4.1 Analogue operation
4.1.1 DC operation
Operation using a conventional DC controller is possible
without any problems but there is one limitation. The
engine will only start moving when the track voltage
reaches 7–8 Volts. Maximum speed will be reached
when turning the controller to the limit. This is
absolutely normal and is due to the minimum voltage
the LokSound decoder requires for operation. Running
sounds are available in this operating mode but not
additional sound effects.
4.1.2 AC operation with conventional
Märklin® controller
Operation with conventional Märklin® controllers
works as you know it from other models. Speed is
controlled by turning the knob.
To change direction the knob has to be turned to the
left beyond the stop position.
Please note:
The engine must have completely stopped before
changing direction. Never change direction while
the engine is moving!
4. Set Up and installation of the decoder
After successful installation you may now operate the
decoder.
The following will outline how you can check if you
have installed the decoder correctly. Chapter 4.1
describes analogue operation. In chapter 4.2 you learn
how to operate LokSound with various digital systems.
Before changing any decoder settings (e.g. engine
address, sound volume) we recommend to read
chapter 5. There you find out which parameters are
available and how they may be adjusted with the most
common DCC command stations.
After installation you may test the LokSound decoder
as follows.
Please check all connections carefully using an
Ohmmeter: Are there any short circuits between
the motor terminals and the wheel pick-ups? Are
all connections between motor terminals and the
chassis isolated? Are lamps connected properly
and isolated from the chassis? Is the decoder
installed safely to avoid contact with the chassis?
Is there sufficient space around the LokSound
decoder to allow for heat dissipation? Could the
LokSound decoder or any of the wires be
squeezed when refitting the housing? Is the
speaker installed in such a way that sound can
emit from the engine without obstruction?
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
Figure10c: Connecting extern Reed contact
reed contact(SRK)
resistor 10k 0,25W

16 user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
4.2 Digital operation
4.2.1 Using Märklin® 6021
LokSound decoders may be used with all Märklin®
control devices or compatible systems. The functions
F1 to F4, however, can only be activated with the
„new Motorola® format“. To activate this format
put DIP switch 2 of the 6021 to the upper („On“)
position.
XXX
4.2.2 Using DCC (Lenz, Intellibox, etc)
LokSound may be operated with any DCC compatible
system. The automatic speed step detection was tested
with the following command stations: Roco® Lok-
maus2, Uhlenbrock® Intellibox, Lenz digital plus
version 3.0, Zimo MX1. When using Lenz digital plus
version 3.0 the auto-detect function does not work
with 14 speed steps. Set 28/128 speed steps at all
times. The auto-detect function is activated every time
the decoder receives power (when turning on power
to the layout) or when you switch on the headlights.
During this process the headlights have to be switched
on and you have to turn the control knob (or slide
control) until the lights burn steadily. Should you
change the speed step setting during operation you
have to interrupt power to the decoder shortly in
order to re-activate the auto-detect function.
4.3 Resetting to factory pre-set values
You may reprogram the factory pre-set values at any
time. Write value 08 in CV 08. A reset of the sound
files is only possible with the aid of the LokProgrammer
53450.
5. Adjusting decoder parameters
Chapter 5 provides information on how to change
the settings of LokSound decoders. Please take your
time to read and understand the somewhat complex
explanations. After the introduction into the world
of decoder parameters (called CVs) in chapter 5.1,
you will find in chapter 5.2 all you want to know
about which CVs have what kind of effect on the
properties of LokSound decoders.
Chapter 5.3 explains how CVs may be set with various
DCC command stations as well as the Märklin®
command stations. You find a complete list of all CVs
in chapter 7.1.
5.1 CVs of LokSound decoders
LokSound decoders are compatible with the NRMA /
DCC standard. That means, that all parameters
controlling the properties of LokSound decoders, are
stored in so called CVs (Configuration Variables).
LokSound decoders support 230 variables. This large
number of CVs indicates the multitude of possibilities
available with LokSound decoders. In order to get the
best out of your decoder and to easily manage this
large number of settings we recommend the use of
our LokProgrammer, part no. 53450.
With LokProgrammer all CVs may be programmed
easily and comfortably on your PC. Please note that
CVs that are not programmed properly could impede
the performance of the decoder. The LokProgrammer
part no. 50450 is not suitable for programming this
decoder.
All CVs may be programmed without the
LokProgrammer by using any DCC system that is NMRA
/ DCC compatible or with Märklin® 6021.
Chapter 5.3 explains, how it works.
In each CV values from 0 to 255 may be stored.
The properties of the decoder vary depending on the
stored value. If you have a look at the list of CVs in
chapter 7.1 you will notice that most CVs have
numerical values.
For example CV 1 contains the engine address. This
may vary between 1 and 127 (see range of values).
The factory setting is 3.
Please note that not all CVs have factory pre-set values:
Some CV values vary depending on the type of sound
effect. While most CVs expect numerical values, others
represent storage locations that manage various
functions simultaneously (mostly switching on or off).
CVs 29 and 49 are good examples: for these CVs the
value has to be calculated individually, depending on
the parameters you want to adjust:
First you decide which options should to be turned
on or off. In the column „value“ you find 2 numbers
for each option. The value 0 indicates the option is
switched off, otherwise the value may range from 1
to 128. Add all values of the individual options to get
the total value to be written into the CV.
change parameters

17
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
load control
Example 1:
Let’s assume, you want to use the Intellibox DCC with
128 speed steps and analogue detection should be
active (because you want to control some locos in
analogue mode). All other options are turned off. CV
29 shows the value 6 (0 + 2 + 4 + 0 = 6).
Example 2:
You want to turn the volume of the decoder down.
Set CV 63 to a value between 1 and 64, let’s say 25.
5.2 Important settings of LokSound
Details of the most important CVs may be found in
chapter 5.2. Please study these instructions carefully
before you do any program changes.
Careful deliberation will help you to find the optimal
settings to achieve the desired effects with your
LokSound decoder.
5.2.1 Back EMF control (load control)
LokSound decoders utilize fourth generation load
control assuring constant speed regardless of the
actual load, when using DC motors. Load control was
optimized and tested with motors from:
•ROCO®,
•Bachmann (Liliput),
•BRAWA®,
•Märklin®,
•LGB,
•Bühler,
•Mabuchi.
Load control may be deactivated (if so desired).
Please note that load control is always turned off when
using AC motors – no matter what settings are used.
AC motors are not suitable for load control
How to switch on load control
Set the first bit of CV 49. Read out the CV: load
control is deactivated if the value is 0 or 2. To activate
it, just add 1 to the actual value and enter. Example:
CV 49 reads 2. To activate load control set CV 49 to 3.
You find a detailed description of all possible values
for CV 49 in chapter 7.1.
Parameters of Back EMF control
The internally used PI-control algorithm of Back EMF
control depends on 3 parameters: the control
reference voltage is stored in CV 53, the control
parameters are in CVs 54 and 55.
Reference voltage:
In CV 53 you set the voltage that should come back
from the motor.
This value depends on the track voltage and the
coefficient of utilization of the motor. A coefficient
of 75 % and a track voltage of 16 Volts adds up to a
voltage of 16 V * 75 % = 12 Volts. That value has to
be written into CV 56. The voltage (here: 12 V) may
be entered in 0.25V-increments. This results in a value
of 30 (12V * 2.5) for CV 53. If you don’t know the
exact motor coefficient you may obtain the value
experimentally as follows:
Check, if the engine really reaches top speed at the
highest speed step or if you cannot detect any speed
changes at the maximum speed step. In the latter
case you have to reduce the value for CV 56, in the
first case increase the value. The internal PI-regulation
of LokSound can be adjusted with CV 54 and CV 55.
Depending on the type of motor the parameters may
have to be adjusted to achieve optimal running
performance.
LokSound decoders are factory pre-set for the use
with ROCO®-, Brawa®- or Kato motors.
Parameter ‘K“, stored in CV 54, influences how
strongly load control will effect the driving
performance. The higher the value, the more load
control will respond to any changes. Adjust this value
with care, because too high values could lead to
irregular and „hard“ driving performance. If you prefer
smooth running try to reduce the value step by step
until you reach an optimum.

18 user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Parameter „I“, stored in CV 55 provides important
information to the LokSound decoder regarding the
motor type used: certain electric motors respond
differently to adjustments of the rpm’s. The longer a
motor takes to respond the lower the value in CV 55.
However, it is not easy to recognize the degree of
inertia. In general: the more poles a motor has and
the bigger it is, the more fly wheels it has, the slower
it is and the lower the value should be set in CV 55.
For optimal programming proceed as follows:
Read out the value in CV 53 as described above. Leave
the value of CV 55 (parameter I .I.) for the time being
and test the engine. Now change the value of CV 54
in steps of 5 downwards or upwards and monitor the
running properties of the engine. If there is no
improvement leave the value of CV 54 and change
the value of CV 55 (intensity of control) in steps of 5
until an optimum is reached.
Please note, that incorrectly set parameters may
impede the effect of Back EMF control to the
point that the motor may stop altogether. Refer
to our website http://www.loksound.de for
suggested values for commonly used motor /
drive combinations such as:
Parameters for Fleischmann® motors
Engines with the traditional Fleischmann® motor
should be programmed as follows:
CV 54 = ca. 14 – 18
CV 55 = 20
Parameters for Märklin® high performance
motor
The 5-pole high performance motor from Märklin®
(series 37xxx) is well suited for the LokSound decoder
when programmed as follows:
CV 54 = ca. 20 – 25
CV 55 = 38
load control / speed curve
5.2.2 Speed Curve
LokSound decoders recognize 256 internal speed steps.
They may be adapted to the characteristics of each
engine and assigned to the available speed steps (14,
28 or 128). NMRA allows two choices:
Speed curve via CV 2, 5 and 6 (figure 10).
Set the starting voltage in CV 2 and the maximum
speed with CV 5. CV 6 represents the medium speed.
You may define the shape of the curve (straight or
with two different gradients). This mode is activated
via CV 29 (see chapter 7.1).
You may also define an individual speed curve:
Store the speed curve values in CVs 67 to 94 (as per
figure 8). Those 28 values will determine the 256 speed
steps. This method permits to optimize the running
performance. This mode is also activated via CV 29.
We recommend the use of the ESU LokProgrammer
and its software for easy calculation and
programming.
Figure 12: Speed curve with CV 67 - 90
0 14 28
0 128 256
Figure 11: Speed curve with CV2, 6, 5
0 14
0 128
VMid
VHigh
VStart

19
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
speed curve / Auxiliary function outputs
5.2.3 Auxiliary function outputs
LokSound decoders have 4 physical function outputs,
two for directional lighting, two for auxiliary loads.
A further 10 functions may be activated by pressing
a button to trigger various sound effects.
If you do not want to use the physical function
outputs AUX 1 and AUX 2 you may control another
two sound effects (12 in total).
In addition the functions „sound on / off“ and
„acceleration on / off“ are available. The latter turns
off the acceleration- and deceleration rate and is often
used for precise control of the engines particularly
while shunting. In „shunting mode“ the speed is halved.
Assignment of function buttons
The outputs may be assigned to the available function
buttons. Each function button is linked to a CV in
which any number of events may be combined. Figure
14 on page 25 shows the different possible
combinations and also the ex-factory setting.
Please note:
• Some functions are directional.
• Your DCC command station may not have all
necessary function buttons.
• Each of the function outputs must be turned on or
off separately.
The value that has to be entered into each individual
control-CV is calculated as follows:
Switching on function outputs
Each of the function outputs can / must be turned
on, before it can be used.
You may program any of eight available lighting effects
for each output:
• Dimmer: normal, continuous power to load
• Blinking light: the output blinks with an adjustable
frequency
• Inverse blinking light: the output blinks as usual but
in opposite sequence. This permits to activate
alternately blinking lights.
• Strobe
• Double Strobe
• Random, fire box
• Smoke, for controlling the intensity of the smoke
generator
• Zoom
• Mars light
• Gyra light
There is a CV (CV 113 - 120) for each output, in which
the desired mode may be stored. Please note that you
may deactivate each output with „0“ if it is not needed.
CVs 117 – 120 are only available on LokSoundXL.
The lighting outputs are factory pre-set to „on“. In
steam engines this is also true for the AUX 1 output
that is assigned to the headlight button.
Dimming of lamps
With LokSound you may dim the lamps in 15 steps to
adapt the brightness optimally to your model. The
lamps are pulsed, i.e.: they are continuously switched
on and off. The brightness of each output may be
adjusted separately. The desired dimming value (0 to
15) has to be added to the value of the corresponding
control-CV (113 - 120) that defines the function mode.
Blinking frequency and duration of „bright
period“
If a function output has been set to „blinking“ or
„inverse blinking“, the duration of the „bright period“
(defines blinking frequency) and the on / off ratio
have to be taken from CV 112 (see chapter 7.1).
The „bright period“ is adjustable in 33 steps. It is
always a multiple of 65.5 milliseconds. The On / Off
ratio is adjustable in 16 steps from 1/16 to 16/16. A
ratio of 8/16 indicates that the light output remains
„on“ for the same period as it is „off“. The value to be
entered into the control-CV 113 is calculated as
follows:
Duration of „On“ period (value: 0 – 15) * 16 +
On / Off ratio

20 user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Examples
•Example 1: smoke generator on AUX 1 and F5.
Let’s assume you want to control a smoke generator
with function button F5 that should be connected to
output AUX 1. Please refer to the installation
instructions in chapter 2.5. The output AUX 1 must
be activated and assigned to the F5 button:
First we activate the output. In this example we want
to use the dimming function (the output must be
active continuously) and set at 100% brightness. CV
115 controls output AUX 1 (see paragraph 7.1).
The value to be entered into CV 115 is calculated as
follows: 16 (for dimming function) + 15 (for maximum
brightness) = 31.
Now we have to assign function button F5 to output
AUX 1: refer to figure 13: control-CV 171 controls
the F5 button (third column). In CV 171 we enter
those functions that should be switched with the F5
button. We look at the table in figure 13, locate the
intersection of the row for F5 and column AUX 1
and find the number (in this case 4). Once we enter
this value in CV 171 the F5 button controls the output
AUX 1. In order to also switch AUX 1 with F5 when
reversing the same value has to be entered in CV 174.
• Example 2: blinking light on AUX 2 and F6
We want to connect a „blinking light“ to AUX and
control it via the F6 function button. The brightness
should be set to 6/15 of the maximum value. The
„bright period“ and the „On / Off“ ratio are set as
described in paragraph 5.2.3.3.
First we have to activate output AUX 2 and set it to
„blinking“. We achieve this by entering 32 (for blinking)
+ 5 (= 6/15 of maximum brightness) = 37 in CV 116.
Next we assign output AUX 2 to the F6 button. We
enter the functions to be controlled via F6 into
control-CV 177. Again we consult the table in figure
13, find the intersection between row F6 (forward)
and column AUX 2 and enter the number (in this case
8) from the table in CV 177. Now the F6 „forward“
button controls the output AUX 2. To program the
same for reversing enter value 8 in CV 183.
Auxiliary function outputs / Sound adaptation
•Example 3: Deceleration on / off with F5
Here we want to activate / deactivate the acceleration
/ deceleration with F5. This function represents a
„logical“ function and not a „physical“ output and
thus does not have to be configured. We only have to
assign the function „deactivate deceleration“ to the
F5 key by entering value 1 in CV 172 (see figure 13).
If the same effect should work while reversing enter 1
in CV 175. We recommend a PC and LokProgrammer
for programming function outputs:
LokSound decoders offer so many possible
combinations that it is recommended to use the
LokProgrammer (part no. 53450) in conjunction with
a personal computer.
5.2.4 Sound adaptation
LokSound decoders offer many possibilities to adjust
sound effects. All parameters are stored in CVs that,
like all others, may be modified. Adaptation of
revolutions for diesel and pitch for steam exhaust
chuffs. The revolutions of a diesel motor may be
modified with 2 CVs:
Enter the revolutions of the idling diesel motor in CV
59. The standard value of 32 permits reproduction of
the sound at original speed, while value 16 reduces
this to half speed.
Enter the revolutions at maximum speed (respectively
maximum revs) in CV 60:
Value 255 means double the original speed. Use the
same parameters when adapting the pitch of the
exhaust chuffs for steam engines:
The interval of the exhaust chuffs should be shorter
and vary in pitch with increasing speed.