HL-404RA Audio Fiber Converter

Simultaneous Two-Way Full-Duplex Audio Transport The HL-404RA Audio Fiber Converter is a high-performance fiber optic transceiver meticulously engineered for the simultaneous two-way transmission of four-channel unbalanced analog audio . By facilitating simultaneous forward and reverse audio paths over a single fiber link, this system delivers a true full-duplex communication infrastructure . The device architecture utilizes stereo single-ended input configurations coupled with standard unbalanced RCA interfaces to secure total electrical isolation and zero signal interference . This reliable layout makes it an optimal solution for professional AV distribution, remote monitoring setups, and broadcast talkback systems . Advanced FPGA Core and High-Resolution Performance At the technical foundation of the HL-404RA Audio Fiber Converter is an integrated processing engine driven by high-stability FPGA digital encoding/decoding and clock recovery technology . Operating across a comprehensive measurement bandwidth frequency response of 10 Hz to 20 kHz, the system generates up to a high-resolution 24-bit serial output . It features dual operational capabilities, supporting a 48 kHz basic mode as well as a 96 kHz high-rate processing mode, while maintaining full multi-format compatibility with professional I2S bus and MSB protocols . This advanced processing structure guarantees high linearity and a wide dynamic range with exceptionally low harmonic distortion . Universal Optical Flexibility and Maintenance-Free Setup The HL-404RA Audio Fiber Converter delivers universal optical compatibility, operating smoothly over both single-mode and multi-mode fiber networks . The hardware spans standard un-relayed transmission distances of up to 1 KM over multi-mode configurations and a default range of 20 KM over single-mode lines, with customized long-haul options stretching up to 100 KM . This maintenance-free, hardware-based solution features a true plug-and-play design that requires no software installation or manual calibration . To establish a proper fiber handshake and precise signal routing, the system must be deployed as a matched pair consisting of a distinctly labeled Transmitter (TX) and Receiver (RX) unit, featuring front-panel diagnostic LEDs to monitor ongoing power, link connectivity, and operational health . Download the technical specification sheet here - LINK