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The
Line In/Out
pluggable screw-terminal allows interfacing to the
vehicles’ existing communications system. The Line audio level of
this interface is that of typical equipment being -10dBV, which is
about 0.3V RMS (2V Peak to Peak Max)
Input Impedance:
50k ohm
Output Impedance:
1.2k ohm
Pinout:
1 (left) = Line In (uplink audio)
2 (middle) = ground
3.(right) = Line Out (downlink audio)
USING THE
LINE IN/OUT
Line In/Out
NOTE:
It is recommended to use screened 2-core audio cable. It may
be required to adjust the gains of the communications system
that is being interfaced in order to achieve optimum audio
levels.
NOTE:
The microphone port needs to be disabled if using the line-in
by switching the slide switch to the right. Use the tip of a pen
to gently click the slide switch over to the right.
Slide Switch
Left (Normal Operation
Right (Line in/Out Mode)
