The purpose of using the coupler microphone in the Accessory Box is to acoustically separate the input signal from the
hearing instrument. This makes it possible to verify the external input device independently of the hearing instrument,
and is mainly used for testing devices such as FM and Bluetooth transmitters.
2.3.4
Battery simulator
Using a battery simulator is highly recommended because it ensures that the hearing instrument is powered with the cor-
rect voltage and you avoid unnecessary battery waste for the purpose of coupler measurements.
See
2.3.5
Cable groove
Wrap the programming cable of the hearing instrument once around the
cable groove. This prevents the hearing instrument from being pulled
out of place when you close the lid for testing.
2.3.6
Elevation plate
Use the elevation plate to facilitate positioning of wireless transmitters
and body worn hearing instruments at a level where the microphone or
microphones are approximately centered in relation to the loudspeaker.
•
To use the plate, lift it up from its recess and place it in the high-position coupler socket.
Otometrics - AURICAL HIT
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2 AURICAL HIT
