Technical data

GB Sound module USM-RC
20 BEIER-Electronic 28.07.2008
Volume control
A volume control is possible by an external potentiometer (100kΩ).
You connect this potentiometer to connector X3 (see wiring diagram, page 7).
If no potentiometer is connected, always the maximum volume is spent.
If the sound module is used in the digital operation, the volume can be controlled also
by the remote control. The proportional channel #4 is used for that. To activate the
volume adjustment, the stick must be brought for at least 2,5s in position A. After this,
the volume control is active. You will recognize this also by the red LED on the sound
module which lights during the activated volume control.
If you move the stick now in position D, the sound becomes louder. In position A the
Sound becomes quieter. In order to hear, how you adjust the volume, it is of course
reasonable, to switch the engine sound on, before adjusting the volume.
If the stick from channel #4 is not moved for 5 seconds anymore, then the volume
controlling is switched off. The red LED turns off and the sound output is interrupted
very shortly. The stick has now his normal function.
General notes to the volume
Please also notice that the sound data’s which you transfer into the sound module
should have an optimal modulation. Therefore e.g. not already record the sounds
much too quiet.
With the supplied software „GoldWave" you can adjust the volume of the single
sound files accord to your wishes.
With low supply voltage (e.g. 6 V) it can happen that the Sound is overdriven, so it
can come to an unclean sound output (scratch noise). In this case, the volume
should be turned down a little.