Radio Connections - Firecom 3000C Installation & Operation Manual

RADIO CONNECTIONS

To ensure proper operation, the connection to the radio should be performed by a
qualified Radio Technician.
23. If you are using a radio-specific interface cable, follow the directions included with
the interface cable, then proceed with step #26 in this installation procedure.
24. Plug the 9-Pin plug on the end of the supplied MR-0X Mobile Radio Interface
Cable into the jack on the rear of the intercom (Figure 15).
Make sure to tighten the 2 screws on the plug of the MR-0X. If these screws are
not tightened, the 9-pin plug may vibrate loose and cause problems with trans-
mission, reception or other radio problems.
25. Using the information in Table 1, connect the wires on the MR-0X Mobile Radio
Interface Cable to the appropriate places on the 2-way radio.
Enlargement
Pin 5 Pin 1
Pin 9
Pin # Wire Color
1 Brown
2 Red
3 Orange
4 Yellow
5 Green
6 Blue
7 Violet
8 Gray
9 Black
I N S T A L L A T I O N
System Function
Transmit Audio Hi
Transmit Audio Lo
PTT Hi
PTT Lo
No Connection
Receive Audio Hi
Receive Audio Lo
No Connection
No connection
Radio Connection
Mic Hi
Mic Lo
PTT Line
PTT Reference
----
Receive Audio Hi
Receive Audio Lo
----
----
IMPORTANT
IMPORTANT
FIGURE 15:
The Rear Panel
TABLE 1
Interface Cable Wiring
13.