Sierra 200 Manual Do Utilizador
20
Microwave Radio Interface Board
This board can be configured to drive a microwave radio that requires balanced audio
and E & M signaling.
Modular jack pin outs
Pin Use
1
Balanced Tx audio out
(600 Ohms)
2
Balanced Tx audio out
(600 Ohms)
3
PTT "M" signaling
4 Ground
5
Negative voltage input for PTT keying circuit (nomially -24v)
6
COR input, active low
7
Balanced Rx audio input
(600 Ohms)
8
Balanced Rx audio input
(600 Ohms)
1
1
1
1