Description
Simultaneous Two-Way Balanced Audio Transmission
The HL-404XA Bidirectional XLR Balanced Audio Fiber Extender is a professional-grade fiber optic transport system engineered for high-performance, two-way audio networking across extensive distances . The device accommodates 4 independent channels of balanced analog audio traveling concurrently in both directions simultaneously over a single optical link . Designed with industry-standard XLR (Cannon) balanced interfaces, it delivers a studio-grade 100dB high dynamic range alongside a greater than 100dB Signal-to-Noise Ratio (SNR) for blast-free operation across a wide 20Hz to 20KHz frequency response . This dual-direction architecture makes it an ideal choice for bidirectional radio and television intercom systems, remote multi-channel audio feedback loops for live events, stadium or campus-wide audio networking, and professional recording studio links .
Advanced FPGA Digital Platform and Premium Audio Quality
At the technical core of the HL-404XA Bidirectional XLR Balanced Audio Fiber Extender is an innovative processing platform powered by advanced FPGA digital encoding/decoding and digital clock recovery technology . This advanced architecture ensures high integration and long-term timing stability to completely eliminate signal jitter . To maintain pristine audio fidelity and keep total harmonic distortion (THD) under 0.1%, the internal circuitry incorporates an intelligent noise control system for soft rising and falling waves, coupled with automatic high-pass filtering to isolate DC offset . For maximum operational security in harsh field deployments, the hardware is fortified with Level 3 lightning protection on all XLR interfaces, rated up to 6KV differential mode to protect sensitive terminal gear from electrical surges .
Universal Fiber Support and Maintenance-Free Field Deployment
The HL-404XA Bidirectional XLR Balanced Audio Fiber Extender delivers universal optical flexibility, operating seamlessly over both single-mode and multi-mode fiber infrastructures via standard FC (Fiber Connector) interfaces . It achieves an un-relayed transmission distance of up to 1 KM over multi-mode configurations and a standard default range of 20 KM over single-mode networks, with customised long-haul scaling options available up to 100 KM to satisfy project-specific requirements . This entirely hardware-based solution features a true plug-and-play design, demanding zero software configuration, manual calibration, or technical setup . Deployed as a pre-configured matched pair consisting of a transmitter and a receiver unit, the standalone desktop devices include integrated LED panel indicators for immediate, real-time monitoring of power, fiber link connectivity, and active audio signal status .
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