3G-SDI Video Fiber Converter

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4-ch BIDI 3G/HD-SDI Video With 4-ch BIDI XLR Balanced Audio Over LC Fiber Converter

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    1. Product Overview

    This 4-ch BIDI 3G/HD-SDI video with 4-ch BIDI XLR balanced audio over LC fiber converter(HZT-SDI-3G-4VV4AA-SM002) is a professional-grade broadcast-grade fiber transmission device designed for long-distance, lossless, and stable transmission of high-definition video and professional balanced audio signals. Developed and supplied by HZT Technology (www.hzt-techs.com), this all-in-one fiber media converter integrates bidirectional SDI video transmission and bidirectional XLR balanced audio transmission via a single LC fiber link, eliminating complex cable layout and signal interference issues in traditional audio-video transmission systems.
    Widely applied in broadcast television, live event production, studio signal extension, stage performance, security monitoring, and professional AV engineering scenarios, our 4-channel bidirectional SDI XLR audio fiber converter supports full 3G/HD/SD-SDI signal compatibility and standard XLR balanced audio input/output, delivering ultra-low latency, anti-interference, and long-range fiber transmission performance for global clients.

    2. Core Key Features 

    • Dual 4-Channel Bidirectional Transmission: Supports 4-ch BIDI 3G/HD-SDI video and 4-ch BIDI XLR balanced audio simultaneous two-way transmission over one LC fiber cable, maximizing fiber resource utilization and reducing project wiring costs.
    • Full SDI Standard Compatibility: Fully compliant with SMPTE 425M, SMPTE 292M, and SMPTE 125M standards, compatible with 3G-SDI, HD-SDI (1080P/60fps), and SD-SDI signals, adaptive to all mainstream broadcast video resolutions and frame rates.
    • Professional XLR Balanced Audio: Equipped with standard XLR balanced audio interfaces, supports bidirectional analog audio transmission, effectively resisting electromagnetic interference, ensuring zero noise and high-fidelity audio output for professional AV systems.
    • High-Stability LC Fiber Interface: Adopts industrial-grade LC dual-fiber/single-fiber optional interface, compact structure, stable plugging, supports long-distance transmission up to 80km without signal attenuation, suitable for long-range signal extension projects.
    • Ultra-Low Latency & Lossless Transmission: Hardware real-time processing design, no frame loss, no delay, no compression, realizes pure uncompressed audio-video signal transmission, meeting strict broadcast-level real-time requirements.
    • Industrial & Broadcast Grade Design: Metal shell, electromagnetic shielding design, wide working temperature range, anti-shock and anti-interference, stable operation in complex indoor and outdoor engineering environments.
    • Plug-and-Play & Easy Installation: No software debugging required, automatic signal identification and adaptation, support desktop and 1U rack-mounted installation, convenient for system integration and on-site deployment.
    • Customizable Industrial Solutions: HZT Technology (www.hzt-techs.com) provides OEM/ODM customized services, including transmission distance adjustment, interface expansion, and protocol customization for global clients.

    3. Product Applications

    The 4-ch BIDI 3G/HD-SDI video and 4-ch BIDI XLR balanced audio over LC fiber converter is a versatile audio-video fiber transmission solution, widely used in global professional scenarios:
    • Broadcast TV station signal transmission and studio room signal extension
    • Live concert, stage performance, and outdoor live event AV transmission
    • Professional theater, conference room, and exhibition hall audio-video system
    • Security monitoring, intelligent traffic, and industrial monitoring system
    • Remote teaching, medical imaging, and long-distance AV signal delivery
    4.1 SDI Video Transmission Parameters

    Items
    Specification
    Video Channel
     
    4 Channel Bidirectional (BIDI) 3G/HD/SD-SDI
     
    Supported Standards
    SMPTE 425M (3G-SDI),
    SMPTE 292M (HD-SDI),
    SMPTE 125M (SD-SDI)
     
    Video Bandwidth
    270Mbps / 1.485Gbps / 2.97Gbps
     
    Resolution Support
    1080P@60/50/30/25fps, 720P@60fps, 480i/576i
    Transmission Mode
    Uncompressed, real-time transmission
    Transmission Distance
    0~300m (Multimode),
    0~10km (Singlemode)
    20~60KM (Custom)
    Interface Type
    BNC Female (75Ω impedance)
    Signal Loss
    No frame loss, no jitter, ultra-low latency (<1ms)

    4.2 SDI Video Transmission Parameters

    Items
    Specification
    Audio Channel
    4 Channel Bidirectional (BIDI) XLR Balanced Audio
    Audio Interface
    Standard 3-pin XLR Balanced Interface
    Frequency Response
    20 Hz~24kHz @±3dB
    Signal-to-Noise Ratio (SNR)
    ≥80dB
    Total Harmonic Distortion (THD)
    ≤0.01%
    Audio Mode
    Balanced analog audio, anti-EMI interference
    Input / Output Impedance
    10K Ohm
    Input capacitance LINE inputs
    10 pF
    Max input/output voltage
    1.228Vp-p (+4dB)
    Sample Rates From
    48kHz

    4.3 Fiber Transmission Parameters

    Items
    Specification
    Fiber Interface
    LC Duplex/Simplex Optional
    Fiber Type
    Multimode (50/125, 62.5/125) / Singlemode (9/125)
    Working Wavelength
    1270nm ~1610nm
    Fiber Loss
    Low insertion loss, stable optical power

    4.4 General Electrical & Physical Parameters

    Items
    Specification
    Input Voltage
    AC 100~240V (Global universal power supply)
     
    Working Temperature
    -20℃ ~ +55℃
    Storage Temperature
    -20℃ ~ +55℃
    Housing Material
    Industrial aluminum alloy, heat dissipation & anti-interference
    Installation Method
    Desktop / 1U Rack-mountable
    Certification
    CE,  RoHS Compliant
     

    If you have any special requirements or questions that require prior consultation. Please fill out the following form and we will have the specialist contact you as soon as possible.