3.0 Rear Panel
3.1 AUDIO IN Jacks
On the rear panel are six RCA phono jacks that connect the Multi-Rx
TM
to
six different radios. These jacks are connected to the speaker output of
each radio. Signal level required for activation of the front panel BUSY
lights is approximately 150mV peak.
In the
Spatial
Mode, audio from radios 1-3 will appear in the sound field to
the left of center; audio from radios 4-6 will appear right of center. Note
the labeling of the top row “L” and the bottom row “R”.
3.2 MIXER OUT/AMP IN Jacks
The MIXER OUT and AMP IN jacks can be used to connect external
equipment such as equalizers, DSP filters or external audio amplifiers.
Note there are two pairs of jacks, one pair for the Left channel (L) and the
other for the Right channel (R). The MIXER OUT signal consists of
receive audio mixed as selected by the front panel switches. These
outputs are at “line” level – nominally 100-200 mV, The AMP IN signal
should also be at “line” level.
To use these jacks, two jumpers must be removed (one for each channel)
inside the Multi-Rx
TM
. These internal jumpers normally connect the
MIXER OUT to the AMP IN signals when the rear panel jacks are not
being utilized. The following drawing shows the location of these jumpers
on the Main PC Board.
NCS-3230 Rev C Instruction Manual
Copyright © 2003, 2004 New Communications Solutions, LLC
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