Mini Bi-Directional 3G/HD-SDI Fiber Converter with Audio 80km
Overview
The LNK-M3G-BI20 Series Mini Fiber Converter enables bi-directional 3G/HD-SDI video transmission
with embedded 4-channel audio over a single optical fiber. Supporting rates up to 3.2Gbps, it offers
uncompressed broadcast-level quality, automatic reclocking, and reliable performance across long
distances up to 80km. Its compact, hot-swappable aluminum housing makes it ideal for broadcasting,
live events, security monitoring, and video conferencing in demanding environments.
Features
1-channel bi-directional 3G/HD-SDI with embedded 4-channel audio
Supports SD-SDI, HD-SDI, and 3G-SDI up to 1080p60
Transmission range up to 80km over simplex LC fiber
Automatic reclocking and cable equalization for stable signals
Handles pathological test patterns without loss or distortion
Plug-and-play with hot-swap support, no adjustments required
LED indicators for real-time power and SDI link status
Industrial-grade design with -20℃ to +70℃ operating range
Rugged aluminum case, compact size (73×44×17mm), easy installation
Technical Indexes
| Fiber Optical interface |
| Fiber interface | Simplex LC |
| Transmission distance | 0-20Km (Other distance available) |
| 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 3.2Gb/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 |
| 1080P 23.98/24/30/50/60 |
| Video SDI standard | 270Mbps (SD-SDI), 1.485Gbps/M(HD-SDI) |
| SMPTE425M3Gb/s Mapping(3G-SDI) |
| SMPTE424M 3Gb/s serial interface(3G-SDI) |
| Electrical |
| Power input | DC 5V, USB-C power port |
| Power consumption | <5W |
| LED Indicator |
| SDI | SDI video |
| P/T | Power Supply |
| Mechanical |
| Dimensions (LxWxH) | 73 x 44 x 17 mm |
| Weight | 0.45KG/pair |
| Casing | Aluminum Case |
| Mounting Options | Desktop |
| Environmental |
| Working Temperature | -20℃～+70℃ |
| Storage Temperature | -40℃～+80℃ |
| Working Humidity | 0~95% |
| MTBF | ≥100000 hours |
Ordering Information
| Model | Description |
| LN K-MHD-BIMM | Mini-type Bi-directional HD-SDI to Fiber Converter, MMF, LC Fiber Connector 500 meters, including Transmitter and Receiver, used by pairs |
| LNK-MHD-BI20 | Mini-type Bi-directional HD-SDI to Fiber Converter, SMF, LC Fiber Connector 20KM, including Transmitter and Receiver, used by pairs |
| LNK-MHD-BI40 | Mini-type Bi-directional HD-SDI to Fiber Converter, SMF, LC Fiber Connector 40KM, including Transmitter and Receiver, used by pairs |
| Model | Description |
| LNK-M3G-BIMM | Mini-type Bi-directional 3G-SDI to Fiber Converter, MMF, LC Fiber Connector 500 meters, including Transmitter and Receiver, used by pairs |
| LNK-M3G-BI20 | Mini-type Bi-directional 3G-SDI to Fiber Converter, SMF, LC Fiber Connector 20KM, including Transmitter and Receiver, used by pairs |
| LNK-M3G-BI40 | Mini-type Bi-directional 3G-SDI to Fiber Converter, SMF, LC Fiber Connector 40KM, including Transmitter and Receiver, used by pairs |
Application
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Mini Bi-Directional 3G/HD-SDI Fiber Converter with Audio 80km Images
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