SFCD: Federal Commander Digital System - Federal Signal

Federal Commander Digital System
Theory of Operation
The Commander SFCDWARE software is used to configure, control, monitor and record all
activity of the siren system. The software communicates with an SS2000D over an RS232 port or
a MODEM-MSK over a USB port. The SS2000D or MODEM-MSK radio modem converts the
data received by the PC into audio frequencies for transmission over the radio and converts audio
received from the radio to data to send to the PC.
The CCU can be controlled remotely over the Internet or LAN using SFCDWARE Client software,
or via a Federal Signal Codespear network server. The SFCDWARE program includes software
to control a voice/data modem for placing and receiving calls regarding alarm events.
The various monitoring points include:
AC Power Sense
Battery Condition
Siren Rotation
Siren Activation Current
Intrusion
Pressure (Optional)
Local Activation
Amplifier/Driver Status
Depending on the type of RTUs in your system, additional monitoring points may be available.
Communication
The Commander System is expandable to handle virtually any siren network, regardless of its
magnitude of complexity. The system is designed to work from conventional base station(s),
through a conventional repeater network, and over trunking radio systems. In some cases, the
digital repeater option can be used to eliminate the need for expensive conventional repeater
systems.
Depending on the RF frequency chosen and the type of communications architecture desired, a
variety of antenna systems are available from Federal Signal. These options should be
discussed with the Federal Signal FWS Applications Engineer or with the local radio shop
supplying the communications equipment.
The digital radio modem uses standard audio tones which are very close together in frequency at
low baud rates. This enables the modem to be used with virtually any type of radio.
The multi-format decoding capability of the Federal Commander System RTUs enables seamless
integration with existing Duotone and DTMF control systems. Thus, the design and engineering
concepts behind The Commander lets you start out with an optimum system to handle your
present needs, and to expand that system as your future needs grow. And, because the
Commander System building blocks contain Federal Signal‟s high standard of quality, you can be
assured of complete system compatibility, now and for years to come. This means that a system
you install today will not become obsolete tomorrow, even though technology is advancing at a
rapid pace.
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Theory of Operation