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H. LS dim Vol
LS (Loudspeaker) dim, is the amount of dimming that occurs on the front panel
loudspeaker when a talkback key is pressed. By dimming the loudspeaker when a
talkback channel is on you reduce the amount of acoustical pickup between the
loudspeaker and microphone which helps to eliminate nasty acoustical feedback.
Note: LS Dim is not available on the beltpack B4.
I. End Stop Vol
The term ‘End stop’ refers to old fashioned electronic volume circuits where an ‘end
stop’ resistor would be placed at the bottom of a volume potentiometer to prevent
that potentiometer from fully attenuating (turning off) the audio signal.
In the Beatrice units each of the 4 incoming audio circuits have their own adjustable
level control (to adjust the incoming level of one circuit, press the associated
talkback key and adjust the Volume/ setup knob).
This ‘End stop’ menu adjusts the minimum level that these 4 incoming audio circuits
can be set to, where ‘0’ equates to off and ‘10’ equates to full volume.
