Remove these two jumpers to use
the Mixer Out/Amp In connections.
Main Board showing location of Mixer Out and Amp In Jumpers
3.3 SPEAKER Jacks
These jacks are for the left and right speakers. The Multi-Rx
TM
was
designed for use with speaker impedance in the range of 4-16 Ohms. For
best results, both speakers should be the same type and impedance.
3.4 DATA Connector
The DATA connector is used for two purposes. The first is Selective
Muting. There is one input line on this connector for each of the six radios.
Selective Muting works in conjunction with the Mute jack to enable you to
mute all radios except one when you key PTT. To use selective muting,
the pin for any radio you DO NOT want to mute when transmitting, must
have a low (logic “0”) level (~0VDC). This can be a TTL or CMOS level or
a relay or switch closure to ground. The Selective Muting pinout is shown
below:
Radio DATA
connector
pin
1 1
2 4
3 6
4 7
5 8
6 9
Ground 5
NCS-3230 Rev C Instruction Manual
Copyright © 2003, 2004 New Communications Solutions, LLC
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