GE Security EST3 User Manual

System overview
1.6 EST3 Installation and Service Manual
Audio subsystem description
The audio subsystem consists of a variety of signal sources,
integral amplifiers, and sophisticated control software. The
3-ASU Audio Source Unit is available with the optional 3-FTCU
Firefighter Telephone Control Unit as the model 3-ASU/FT. The
ASU/FT is the only audio equipment required at the fire
command control center. Zoned audio amplifiers are distributed
throughout the system and provide the de-multiplexing,
switching, amplification and circuit supervision.
Network audio riser wiring
A digital network audio riser consisting of a single pair (Class B)
or two pairs (Class A) of wires connect all amplifiers together.
Since the digital signals are multiplexed, any of 8 independent
audio sources can be directed to any amplifier connected to the
network. All command and control signals for the audio system
are distributed over the network data riser.
CPU CPU CPU CPU
AUDIO AUDIO AUDIO AUDIOAUDIO AUDIO AUDIO AUDIO
A IN A IN A IN A INA OUT A OUT A OUT A OUTB OUT B OUT B OUT B OUT
AUDIO AUDIO AUDIO AUDIOAUDIO AUDIO AUDIO AUDIO
B IN B IN B IN B IN
From
AUDIO DATA PRIMARY
on 3-AS
U
TB2 TB2 TB2 TB2
Figure 1-2: Class B network audio riser wiring

GE Security EST3 Specifications

General

Brand	GE Security
Model	EST3
Category	Security Sensors
Language	English