NLLW – návod k obsluze a instalaci
1.3 Wiring contacts
1.3.1 Description of basic module
The LLW is compact solution of communicator, it means that contains
loudspeaker, microphone, screw terminal and connector for PC connection
(configuration). At picture 1 is drawing of LLW basic board. Functionality of
connection is explain in follow chapters. On the basic board are 3 setting
elements ( trimmers) :
MIC – microphone volume setting
VOL – loudspeaker volume setting
TRH – setting of balance between micro and speaker
Note: Please take in mind during TRH setting that incoming direction ( speaker)
and outgoing direction ( microphone) are influence each other.
We recommend to dont set high volume in the beginning of micro or speaker
and via TRH set both direction to be both in good volume quality.
Picture 1: LLW basic board
For explanation: when signal into speaker approach certain level then
decreases micro volume to enter signal into speaker. At the other hand signal
from microphone decreases volume of speaker. By TRH trimmer you are
setting prefferention of microphone or speaker.
