Installation of a sound module
Connecting the SUSI-interface
Insert the plug with the red, blue, grey and black
cable into the appropriate socket of your loco-
motives motor decoder. The sound module re-
ceives its power and data from the decoder.
Loudspeaker
Each speaker needs a resonator. It is sometimes possible to use the locomotive body or the wagon
body as resonator. If this is not possible, then please use the included plastic resonator.
If using the plastic resonator, please make sure that it is glued air-tight to the speaker. Please do
close with glue also the hole of the speaker cables as well as any other mounting hole present
on the speaker/resonator.
The speaker is to be mounted inside the locomotive so that it faces the widest possible "aperture"
towards the outside (e.g., close to a locomotive window, behind an open grid, etc.).
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.
Wheel revolution sensor
For the production of wheel-synchronized exhaust chuff sounds for steam locomotives, the
sound module possesses a connection for wheel revolution sensors. A reed contact or Hall
effect sensor can be used in conjunction with a magnet at a locomotive wheel, or a light reflection
sensor with an appropriate marking on a locomotive wheel. The reed contact, Hall effect sensor
or light reflection sensor is attached to the solder pads illustrated in the picture below:
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 4 different, adjustable sounds plus a mute switching function:
Number of Sound
Type of Sound
Default Operation
1
Bell, whistle or horn
Function f4
2
Whistle or horn
Function f2
3
Motor sound
Function f1
4
Uncoupling or door warning tone
Function f3
5
Mute switch
Function f8
Hall-Sensor e.g.
TL4905 (Infinion)
N S
N S
small magnet
mounted on
the inside
of the wheel
Reed contact
Light reflecting
mark on the inside
of the wheel
5V
Input
Ground
small magnet
mounted on
the inside
of the wheel
