Programming with a Märklin* Central Unit
If the sound module is attached to an Uhlenbrock locomotive decoder, all CV's can be programmed
with a Märklin* Central Unit, although they cannot be read back.
1.Turn the Central Unit off, and then on.
2.Enter the decoder address and then turn its light "on" (normally by pressing the [function]-key).
3.Turn the control knob all the way to the left (direction change position) and hold it there for approx.
10 sec., until
the locomotive light turns off.
4.Release the control knob. The rear light will now flash slowly 4 times.
5.Enter the number of the CV to be programmed (as if you were entering a locomotive address).
6.Turn the control knob all the way to the left briefly. Now the rear light will flash 4 times quickly.
7.Enter the desired value for CV.
8.Turn the control knob all the way to the left briefly. Now the rear light will flash 4 times slowly.
If additional CV's are to be programmed, repeat steps 5-8. To stop programming, press "STOP" on
the Central Unit or enter "80" as the CV number and turn the control knob all the way to the left briefly.
Since programming with a Märklin* Central Unit only allows input values of 01 to 80, the value "0"
must be entered as the value of "80".
Using the page-register to access CV addresses greater than 79
CV-addresses greater than 79 can only be accessed by the page-register. This is CV 66. If a value other
than zero is programmed in this CV, then that value, times 64, will be added to the CV address specified
by all subsequent writes. The value written into CV 66 must be in range 0 through 64.
The Page register (CV 65) is automatically set to the value zero upon leaving the Motorola** program-
ming mode.
Programming
The Configuration Variables (CV's) form the basis for controlling and selecting all possible features and
functions of the decoder in accordance with the DCC standard. The sound module is connected to a
loco decoder and could be programmed by those methodes which are provided by the loco decoder. In
the case of an Uhlenbrock loco decoder the sound module can be programmed with the Intellibox, DCC
Command Stations and Märklin* Central Units.
Programming with the PIKO Digi-Power-Box or other DCC devices
Use the programming menu of your DCC Command Station (or throttle) to select and program decoder
CV's by register, direct or Page Programming mode. Some Command Stations/throttles also support
the so called "main track programming" (also known as "operations mode programming"). Please refer
to the operating manual of your device for specific instructions.
The individual sounds can be switched on and off using special function keys on your digital Command
Station/Throttle. The allocation (or mapping) of the various sounds to individual special function keys
can be modified using CV's 903 - 915. Decoders are delivered with sounds initially allocated as indicated
in the above table.
Additionally, the mute switching function can be mapped to a function key using sound #8. As the locomotive
drives out of the visible range of a model railway, e.g. into a shadow station, then the entire sound of the
locomotive can be softly faded out by switching on this special function (preset at the factory to function
f8). The sound continues to be generated by the module in this "faded out" condition in accordance with
the respective driving conditions. If the sound is gradually faded in by subsequently switching the special
function off, then the sound again will adapt to the driving conditions in effect at that moment.
Volume
Speaker volume can be changed via CV 902. As shipped from the factory, the volume is set to its
maximum level.
Configuring the dynamic change of sound
Settings which affect the sound pertaining to the immediate operating (driving) condition can be modified
to accommodate the type of locomotive being used. These settings affect the change of sound with load
changes (e.g., uphill and downhill), the speed threshold for triggering the squealing brake sound and the
switching threshold for the electrical exhaust with an electric locomotive (E-loco).
CV 925 is used to define load sensitivity. If a value of 1 is programmed here, then the sound reacts very
quickly to uphill and/or downhill driving, whereas a value of 8 produces a retarded reaction. CV 921 sets
the minimum trigger level for a change of sound for a load increase (going uphill) and CV 922 controls
the minimum trigger level for a change of sound for a load decrease (driving downhill). All values depend
on the locomotive decoder used as well as the locomotive itself, and therefore must be determined by
experimentation.
CV 924 sets the speed threshold at which the brake squealing sound is produced when the speed of the
locomotive is reduced.
CV 923 specifies the speed threshold at which point an electric locomotive (E-lok) produces sound for
its cooling exhaust.
Attaching the sound module
Using a piece of double-sided "sticky" tape, fasten the sound module to any place in the locomotive. The
sticky tape holds the sound module reliably in place and protects it from coming in contact with other
wires, components, etc.
Start-up
Make sure that placing the module in the locomotive will not cause a short circuit! Also insure that, once
you have replaced the body (shell) of the locomotive no wires are "pinched" which could also cause
short-circuits to develop.
A short circuit between engine, lighting, pickup shoe, wheel sets and the module can possibly destroy the decoder’s
components as well as the electronic of the locomotive!
Switching sounds on and off
Each sound module has 6 different, adjustable sounds plus a mute switching function:
Default Operation
Type of Sound
Number of Sound
Function f1
Motor tone
3
Function f2
Whistle or horn, repetitive
2
Function f3
Uncoupling
4
Function f4
Whistle or horn, 2x
1
Function f5
Conductor wistle short, only combined with f1
16
Function f6
Station announcement, only combined with f1
6
Function f8
Mute switch
8
Function f9
Whistle, short
5
Function f11
Pump/Air compression
15
Function f13
Departure signal
11
Function f16
Whistle, long
12
If you run a diesel locomotive, you can influence the frequency of the exhaust “chuff" sounds. CV 938
is used to define the time between two exhaust sounds at maximum speed while CV 939 can be used
to define the period at minimum speed. The larger the value in the CV, the longer the time between the
individual exhaust sounds.
The values for these CV's are preset at the factory for Uhlenbrock locomotive decoders for "common"
HO locomotives, and can be easily modified to suit other locomotives.
Controlling several sound or special function modules from a locomotive decoder
Up to three sound or special function modules can be controlled through a single SUSI interface. CV 897
is used to allocate each module's own CV address range, thus allowing each module to be programmed
independently. To accomplish this, each module must first be connected individually to the locomotive
decoder. Its own CV address range is determined by assigning the value 1, 2 or 3 to CV 897. Once all
modules are connected, each can be addressed and programmed within its own CV address range. The
CV to be modified will depend on the CV address range as specified in the list of CV's at the end of this
document. Please you note that the explanations in the preceding sections refer to address range #1 (CV's
900 - 925). Use the appropriate CV address from the list of CV's provided in the accompanying table.
