The B-Tech APF-01 sets a new standard in broadcast program monitoring, combining intelligent source monitoring, automatic changeover, and emergency program playout in a compact 1RU unit.
The APF-01 continuously monitors two independent balanced analogue stereo program paths, allowing broadcasters to maintain uninterrupted transmission.
Input A serves as the primary program source, while Input B provides an automatic backup should the primary source fail.
If both program sources are lost, the integrated USB MP3 player automatically takes over, providing emergency program audio until a valid source is restored.
Once normal operation resumes, the APF-01 automatically returns to the selected program source after the configured delay.
Bright front-panel LED VU meters provide an instant visual indication of the audio levels for both monitored sources, while the LCD display clearly shows the current ON-AIR source and the selected headphone monitoring source.
With integrated GPO status outputs and web interface with SNMP support, the APF-01 can be easily monitored and controlled remotely, making it ideal for broadcast studios, transmitter sites, and other critical audio applications.
Designed with reliability in mind, the unit features a passive fail-safe bypass. In the event of a power supply failure, Input A is automatically routed directly to the outputs, ensuring uninterrupted program audio.
Features
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Dual balanced stereo RJ45 inputs
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Dual parallel balanced stereo RJ45 outputs
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Automatic switching between primary and backup programme sources
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Integrated USB MP3 emergency program playout
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High-contrast front-panel LED VU meters
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LCD display showing ON-AIR and headphone monitor source
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Adjustable input monitoring sensitivity and emergency output level via rear-panel trimpots
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User-configurable fail threshold and switching delays using the front-panel controls
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Selectable headphone monitoring source
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Passive fail-safe bypass routing Input A directly to the outputs during power loss
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GPO status outputs for remote monitoring
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Web interface with SNMP support for remote monitoring and control
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1RU aluminium enclosure