Fitting the 75 900
Cable connections
In a vehicle, the red lead is connected to the
pickup, the brown one to the chassis/frame.
When used as a stationary decoder, the red and
brown leads have to be connected to the
respective output tabs of the Central Unit.
All other outputs are used for effects.
Each device has to be connected to an output,
and the return either to the brown or the black
cable as shown in the sketch.
Fixing the unit in the vehicle
Use the supplied adhesive pad for fixing where
there is room for the decoder. The pad keeps the
unit insulated and fixed in its position.
In case the attached device has a high current consumption, we recommend to fasten the decoder
directly to a metal chassis frame or heat sink with hot glue. All common brands are suitable for
this.
Setting into operation
Check for proper wiring after installation with a wiring checker or an ohmmmeter. Make sure that
nothing conductive is touching the unit.
A short circuit from decoder parts to input or chassis
or at the motor / lamp outputs may destroy the device!
red
skater
chassis
A4
A3
A2
A1
A5
blue
black
+20V
green
yellow
gray
orange
brown
Important
The coding switch #2 on the back of Control Unit Märklin 6021 must be on to issue the extended
Motorola data (Gauge I) format.
The function outputs are only accessible when in extended data format mode.
A Märklin Control Unit 6020 can be used with this decoder only if function #02 is programmed
to value 02 (old data format).
Programming of Uhlenbrock Decoders by Intellibox
The most comfortable way to program a decoder is offerd by the Intellibox. A menu-driven
programming mode in plain english is provided. Programming is carried out by selecting the menu
for function decoders (760 or 75900).
You find exact instructions in the Intellibox handbook.
Programming of Uhlenbrock Decoders by LOKTOOL
This computer routine is used to program Uhlenbrock decoders by applying a Märklin central unit
in connection with a Märklin interface. See reverse for a brief description.
