System overview
EST3 Installation and Service Manual 1.3
The audio and firefighter phone functions use a different
hardware format, providing operator controls and storage for the
microphone and telephone handset in a chassis configuration.
System features
Each cabinet in the system provides local control, display, power
supply, and communication functions. Each cabinet has the
following capacities:
• 10 addressable device circuits (Signature and addressable
analog combined)
• 120 traditional input / output zones
• 4 Class B (2 Class A) security / access control
communication (SAC) busses
• 10 modem / dialer cards, each with two telephone lines
• 2 RS-232 external peripheral device ports
• 456 LED annunciation points
• 342 input switches
In addition, the EST3 system has these global features:
• Firefighter telephone
• Custom programmability and user-friendly front panel
• Class B (Style B), initiating device circuits (IDC)
• Event reporting by alarm, trouble, supervisory, or monitor
mode and message display routing
• Dead front construction
• Supports networking — up to 64 nodes may be connected in
a regenerative Class A or Class B token ring
• Fast response time, less than three seconds from initial alarm
to device activation on a fully loaded system over the
network
• Flash memory on controller modules to facilitate quick
firmware upgrades
• Supports 255 security partitions
• Multiplexed eight-channel digital audio system
• Transient protected field wiring
• Class B (Style Y) or Class A notification appliance circuits
• Ground fault detection by panel, Signature data circuit, and
Signature modules
• Switch mode power supply
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