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S
M
2.9
Lockable cover on receiver
In order to reach the operating elements, a slide (S) is located on the right side of the unit.
This protects the operating elements against unauthorized or accidental use. It is secured
with a set screw (M), which is screwed in completely in order to open the slide.
After removing the slide two potentiometers are accessible:
• The lower potentiometer (P1) adjusts the receiver volume, i.e. regulates the volume
of the signal from the speaker.
• The upper potentiometer (P2) adjusts the basic volume of the built-in microphone.
Automatic fade-in and microphone adjustment
The receiver is equipped with an automatic fade-in feature. The connected hearing aid
microphone or the microphone built into the receiver are turned down for the duration
of speech transmission. This enables the signal of the speaker to be given preference at the
wearer of the receiver.
In addition, the automatic fade-in is complimented by a speech filter. As a result,
disturbing noises (doors banging etc.) do not trigger the automatic fade-in feature.
The automatic fade-in and the basic volume of the faded-in microphone can be set
separately.