Mini HD-SDI over Fiber Extender
Model: SDI Fiber Extender
Overview
The LNK-MHD Series is a professional-grade Mini HD-SDI over Fiber Extender with Long
transmission capability up to 80 km, specifically engineered to enable stable, high-fidelity
transmission of 1-channel HD-SDI video signals (with embedded audio) via fiber optical
cables. As a Mini HD-SDI over Fiber Extender with Long transmission capability up to 80
km, it integrates compact design with long-distance signal transmission performance,
addressing the needs of scenarios requiring both space efficiency and remote HD video
delivery.
This extender system consists of one dedicated transmitter unit and one matching receiver
unit, forming a complete HD-SDI signal transmission link that adheres to HD-SDI industry
standards. The embedded audio function ensures synchronized audio-video transmission,
eliminating issues like latency, frame loss, or sound-video desynchronization—critical for
professional applications where signal consistency is non-negotiable. Its core advantage
lies in the long transmission capability of up to 80 km, which far exceeds short-range fiber
solutions, making it suitable for cross-regional HD video backhaul, such as remote surveillance
signal transmission between cities, or broadcast signal delivery from outdoor live venues to studio
control rooms.
With an ultra-compact form factor, the Mini HD-SDI over Fiber Extender with Long transmission
capability up to 80 km can be easily integrated into other devices or installed in space-constrained
environments—including small surveillance cabinets, portable broadcast terminals, or outdoor
equipment enclosures—without occupying excessive space. It adopts a robust fiber transmission
architecture that effectively resists electromagnetic interference (EMI) and radio frequency interference
(RFI), common in industrial or urban environments, ensuring that HD-SDI signals maintain broadcast-
level quality even over the maximum 80 km distance.
Widely applicable in professional fields such as high-definition security surveillance (e.g., long-range
highway, railway, or border monitoring), and broadcasting (e.g., 中小型电视台 remote signal acquisition,
live event video transmission), this extender provides a cost-effective, reliable solution for long-distance
HD-SDI signal delivery. Its combination of miniaturized design, 80 km long transmission capability, and
stable audio-video synchronization makes it a practical choice for scenarios where remote, high-quality
HD video transmission is essential.
Features
► Each channel includes 8-channel audio embedded
► Automatic cable equalization to ensure signal integrity
► Automatic reclocking 270Mbit/s - 1.48Gbit/s
► Directly compatible with HD-SDI camera systems
► Long transmission capability up to 80 km
► Terminal block power input; Hot swap and hot plug;
► Full digital non-compression broadcast level transmission;
► Super optic dynamic range and free of adjustment;
► Fiber optic WDM/CWDM/DWDM technique;
► industry level ultra-broad temperature range (-20℃~+70℃), adaptable to various environments;
Technical Indexes
| Fiber Optical interface |
| Fiber interface | Simplex LC |
| Transmission distance | 550m-20Km |
| Wavelength | 1310nm/1550nm |
| Video |
| Video interface | BNC |
| Video input/output impedance | 75Ω |
| Video input/output voltage | Typical:1Vpp, Min 0.5Vpp, Max 1.5Vpp |
| Video Bits Rate | Max 1.48Gb/s |
| Differential gain (10%～90% APL) | <1% |
| SDI format support | 625/25 PAL |
| 525/29.97 NTSC, 525/23.98 NTSC |
| 720p50, 720p59.94 |
| 1080i 23/24/30/50/59.94 |
| Video SDI standard | 270Mbps (SD-SDI) |
| 1.485Gbps (HD-SDI) |
| Electrical |
| Power adaptor | 5V DC, Type-C Interface |
| Power consumption | <3W |
| LED Indicator |
| SDI | SDI video |
| P/T | Power Supply |
| Mechanical |
| Dimensions (LxWxH) | 79 x 27 x 18 mm |
| Weight | 0.5KG/pair |
| Casing | Aluminum Case |
| Mounting Options | Desktop |
| Environmental |
| Working Temperature | -20℃～+70℃ |
| Storage Temperature | -40℃～+80℃ |
| Operating humidity | 5%~90% non-condensing |
| Storage humidity | 5% ~ 90% non-condensing |
| MTBF | ≥100000 hours |
ordering information
| Model | Description |
| LNK-MHD-MM | Mini HD-SDI to Fiber Converter, MMF, LC Fiber Connector 500 meters, including Transmitter and Receiver, used by pairs |
| LNK-MHD-20 | Mini HD-SDI to Fiber Converter, SMF, LC Fiber Connector 20KM, including Transmitter and Receiver, used by pairs |
Application
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Mini HD-SDI over Fiber Extender with Long transmission capability up to 80 km Images
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