Routing The Ca Cables; Intercom Connections - Firecom 3000C Installation & Operation Manual

FIGURE 6:
The Rear Panel
Power Connector
Radio
Interface
Jack
Modular
Jack
IMPORTANT
8.
P R E - I N S T A L L A T I O N

ROUTING THE CA CABLES

The path which you intend to run the CA Cables from the Intercom to the Headset
Modules should also be planned BEFORE the installation. The items below are some of the
items to consider when planning where to route the CA Cables.
• Route the CA Cables away from hot surfaces (such as the vehicle exhaust system).
• Route the CA Cables away from any moving equipment on the vehicle.
• Route the CA Cables away from the antenna or the antenna cable.
DO NOT store excess cable. The length of each CA Cable should allow for
•
approximately 10 inches of excess cable in each run (VERY important, especially
in installations with a radio operating in the lower frequencies).
• When routing the CA Cables through bulkheads or other sheet metal, use a
rubber grommet in the hole to prevent damage to the cables.

INTERCOM CONNECTIONS

MODULAR JACKS
On the rear of the intercom, there are 6 modular jacks (Figure 6). These jacks are for con-
necting the CA Cables from the Headset Modules to the intercom. The CA Cables plugged
into any of these six jacks, will provide connections for intercom operation. Only the 3
modular jacks on the left (as viewed from the rear) have radio transmit capability. The CA
Cable from any headset position that requires radio transmit capability must be plugged
into one of these 3 positions.
POWER CONNECTIONS
The 3000C Intercom System requires +12 volts DC (with a negative ground) at 0.15 amps.
The 3000C Intercom comes with a Power Cable Assembly and a 1/2 amp in-line fuse.
We suggest connecting the 3000C power and ground to the apparatus power busses;
preferably to the same connection points as the radio.
RADIO INTERFACE
A universal Radio Interface Cable is supplied with the 3000C. This cable is a 9-wire, shield-
ed cable which terminates with bare wires. These connections to the radio should be per-
formed by a qualified radio technician.
There are many interface cables available from Firecom to interface the 3000C with specif-
ic radios. These "dedicated" interface cables will make interfacing the radio easier, but
should still be done by a qualified radio technician. Contact your local Firecom Dealer for
more information regarding the availability of an interface cable for your radio.
ALL connections to the 2-way radio should be performed by a qualified Radio Technician
to ensure proper interface between the 2-way radio and the 3000C Intercom System.