Audio Control and Tone (ACT) Module
23-2
ACT Module Features
The ACT module features are described below:
• Controlled by the RTU via an RS232 serial port using a simple instruction set.
• Digitally records audio signals (alarm tones, voice announcements, etc).
• Plays stored audio signal.
• Interface to an external low-level audio signal source (microphone, radio audio out,
etc.).
• Interface to input of one audio amplifier and up to two outputs of audio amplifiers.
• Connects to up to six speakers.
• Selective output to any combination of six speakers.
• Routes the audio signals from the amplifier(s) output to selected speakers.
• Routes data coming from the RTU to a serial printer to allow printing of information
by alternative use of the RTU serial port.
The ACT module block diagram is shown below:
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