Unleash Professional Quality with Our SDI Fiber Extender Solutions

In the field of long-distance transmission of high-definition audio and video, the E-link LNK-MHD series 1-channel micro SDI optic extender is a professional transmission device specifically designed for HD-SDI signals. With its miniaturized design and high stability, it has become the core adaptation solution in the fields of security monitoring and broadcasting, perfectly solving the attenuation and distortion problems in SDI signal transmission, and achieving uncompressed transmission of broadcast-level audio and video signals without compression.

Product Positioning

This device is a 1-channel HD-SDI optical extender, consisting of an transmitting end and a receiving end. It needs to be used in pairs and comes in two models: LNK-MHD-MM (multi-mode, 550m transmission) and LNK-MHD-20 (single-mode, 20km transmission). It is equipped with an aluminum casing, with a size of 79×27×18mm and a weight of 0.5KG per pair.

It is a miniaturized device, which can be easily integrated into other devices. The core function is to achieve optical transmission of 1 channel of HD-SDI video signal (embedded 8-channel audio), compatible with SD-SDI/HD-SDI standards, and is a dedicated hardware for high-definition audio and video transmission.

Core Value and Key Features

Its core value lies in breaking through the transmission distance limit of SDI electrical signals, ensuring signal integrity and transmission quality, and meeting the high standards of professional fields. Key features are prominent: full-digital non-compressed broadcast-level transmission, supporting automatic re-timing and cable equalization from 270Mbit/s to 1.48Gbit/s; industrial-grade wide temperature range (-20℃~+70℃), suitable for various complex environments;

supports hot swapping, hot exchange, LC single-fiber interface, with excellent optical dynamic range and no need for debugging; low power consumption <3W, MTBF ≥100,000 hours, with extremely strong stability.

Working Principle

Based on the WDM/CWDM/DWDM technology of optical fibers, the 75Ω HD-SDI audio and video electrical signals input through the BNC interface are converted into optical signals at wavelengths of 1310nm/1550nm, and transmitted over a long distance through a single-fiber optical fiber;

The receiving end converts the optical signal back into an electrical signal, correcting transmission loss through automatic equalization and re-timing technology, ensuring no distortion of the signal, and simultaneously achieving synchronous transmission of 8 channels of embedded audio and video, with no need for manual debugging throughout the process.

Installation Tips and Application Scenarios

The installation adopts a desktop design, with simple operation: connect to a 5VDC power supply through the Type-C interface, the power supply input of the terminal block is more stable, and the hot-swappable design does not require power-off operation; connect the fiber to the LC single-fiber interface, and the video to the 75Ω BNC interface, plug and play.

The core application is in the two fields of security monitoring (remote video signal transmission of SDI cameras) and broadcasting (high-definition signal transmission in the production and broadcasting process), meeting the professional audio and video transmission requirements of various industrial environments.

The E-link LNK-MHD series 1-channel micro SDI optic extender has the core advantages of miniaturization, high stability, and industrial-grade adaptability. It not only solves the pain points of traditional SDI signal transmission but also realizes flexible integration with its compact design, becoming the preferred equipment for long-distance transmission of audio and video in the monitoring and broadcasting fields, providing high-reliability signal transmission guarantee for professional scenarios.