Technical data

GB Sound module USM-RC
28.07.2008 BEIER-Electronic 11
Connection of the outputs:
The 7 outputs of the module are on the pin connector X3. We recommend using the
supplied, attachable ribbon cable. Of course you can also connect other wire/plugs to
the pin connector. Per output there are always 2 pin's availably, at which the load
(e.g. lamps, LEDs, small engines) can be connected.
The pin at the board edge is the positive pole, next to the pin is the output (switched
negative pole).
Output Function Ribbon cable
#1 multifunctional output 1 brown (-) red (+)
#2 multifunctional output 2 orange (-) yellow (+)
#3 light green (-) blue (+)
#4 reverse driving light purple (-) grey (+)
#5 stop light white (-) black (+)
#6 indicator left brown (-) red (+)
#7 indicator right orange (-) yellow (+)
So that the cable colors are right, the ribbon cable must be put on correctly on the
connector (it could be put up theoretically rotated around 180 °, however, the
configuration is changed then). The brown wire must point above (board middle), the
yellow below (board edge).
The switched voltage at the outputs is always as high, as the supply voltage of the
sound module. If the sound module is supplied e.g. with 12 V, only lamps with 12 V
should be connected. If you want to connect LEDs, series resistors are always
needed. In addition attention must be paid at LEDs to the correct polarity. The series
resistors for the LED’s are depended from the supply voltage, the LED-color and the
LED-current. Here is a small table of series resistors, they can used with standard
LEDs (approx. 15 mA):
Supply voltage Series resistor
6V 270 Ohm
7,2V 330 Ohm
8,4V 470 Ohm
9,6V 510 Ohm
12V 680 Ohm
If you want to connect several LEDs to one output, use for every LED an own series
resistor. It’s better not to make any series circuits of the LEDs.