Technical Data Installation Requirements - Firecom 3000A Installation & Operator's Manual

3000A
TECHNICAL TECHNICAL
TECHNICAL TECHNICAL DA TECHNICAL
INST INST INST INST INSTALLA ALLA ALLA ALLA ALLATION REQUIREMENTS: TION REQUIREMENTS: TION REQUIREMENTS: TION REQUIREMENTS: TION REQUIREMENTS:
The FIRECOM System uses only seven wires for total apparatus/radio connection. The signals required are: Mic HI,
Spkr HI, Spkr LO, Radio PTT, Radio PTT Ref, Power, and GND. These signals provide easy connection to a wide variety
of apparatus radios whose input and output circuits are referenced to ground (or other system reference via A-). See
Functional Block Diagram below.
H E A D S E T P T T
PTT REF (10)
PTT TO RADIO (8)
TX HEADSET MIC
TX AUDIO HI (17)
W W W W W ires & Connections ires & Connections ires & Connections
ires & Connections Are Identified ires & Connections
Connector Pin # Wire Color
10
8
17
21
13
20
1
DA DAT T T T T A A A A A DA
DA
P T T
TX Audio
Adjust
Functional Block Diagram: Intercom 3000A
Are Identified Are Identified
Are Identified Are Identified As Follows:
System Function
Orange Radio PTT Ref.
Black Transmitter Key
White Transmit Audio
Green Receive Audio
Blue Receive Audio
Red Power Supply
Shield System GND
P T T 1
Squelch
Volume
As Follows: As Follows:
As Follows: As Follows:
System Connection
Connect to radio PTT Ref
Connect to radio PTT input
Connect to radio Mic HI
Connect to Radio Speaker HI
Connect to Radio Speaker LO
Connect to switched and fused +12V to + 24VDC
Use 1/2 amp fast blow fuse (See System Specifications)
Connect this wire to radio signal GND
to minimize EMI/RFI problems.
(21) SPEAKER HI
(FROM RADIO)
(13) SPEAKER LO
(FROM RADIO)
HEADSET AUDIO
(20) 12-24 VDC
A+
A-
(1) SIGNAL GROUND
8