SMB 3G-SDI Micro Extender 120km Auto-Sensing CWDM 18Ch
SMPTE/DVB-ASI
Overview
The LNK-M3G-SMB1V-20 Series represents an advanced micro-sized
fiber optic transmission solution engineered for space-constrained
broadcast and professional video environments. This compact
extender delivers robust transmission of 3G-SDI, HD-SDI, and SD-SDI
high-definition digital video signals, along with DVB-ASI streaming
capability, through either single-mode or multimode fiber
infrastructure.
Supporting comprehensive industry standards including SMPTE 424M,
259M, 297M, 310M, and 305M (SDTI), this micro-extender ensures full
compatibility with existing broadcast equipment and production
workflows. The system incorporates sophisticated digital fiber
optic transmission technology that eliminates the need for manual
adjustments, enabling truly plug-and-play operation with simplified
setup procedures.
Designed with power efficiency in mind, the extender operates on a
single 5V power supply with optimized low power consumption, making
it ideal for portable production setups and energy-conscious
installations. The compact form factor allows for flexible
deployment in broadcast trucks, fly-pack systems, and space-limited
equipment racks where physical space is at a premium.
This micro-extender is particularly suitable for electronic news
gathering, live event production, and mobile broadcasting
applications where reliability, compact size, and ease of operation
are essential. The robust construction ensures stable performance
in demanding field conditions while maintaining broadcast-grade
signal quality across all supported video formats.
Features
Intelligent Signal Recognition
Extended Transmission Capability
Comprehensive Standards Compliance
Certified for DVB-ASI (EN50083-9) compatibility with full SMPTE standards support including 424M, 292M, 259M, 297M, 310M, 305M, and 344M
Advanced PCB Design
Intuitive Status Monitoring
High-Density Wavelength Multiplexing
Robust Construction
Automatic Configuration
Application Scenarios
Outside Broadcast & Mobile Production
Enables compact fly-pack systems for remote broadcasting, supporting multi-format camera feeds with extended 120km transmission for live event coverage and electronic news gathering
Long-Distance Signal Contribution
Facilitates program feed distribution between production facilities and transmitter sites, utilizing CWDM technology for multiple channel aggregation over single fiber links
Space-Constrained Broadcast Facilities
Ideal for retrofit installations in legacy broadcast trucks and compact equipment racks, providing format-flexible signal extension with minimal space requirements
Telecommunications Video Services
Supports carrier-grade video transport for IPTV headends and video-on-demand systems, maintaining SMPTE/DVB-ASI compliance across metropolitan fiber networks
Emergency Broadcast Systems
Enables rapid-deployment video networks for disaster recovery and temporary broadcasting, featuring auto-recognition capability for simplified field operation
Multi-Venue Event Production
Facilitates distributed production workflows across stadium complexes and convention centers, providing format-transparent transmission for hybrid SDI environments
Government & Defense Communications
Supports secure video transmission for mobile command centers, ensuring signal reliability through robust PCB design and extended temperature operation
Technical Indexes
| SDI Input |
| Video standard | SMPTE424M, SMPTE292M, SMPTE259M, SMPTE297M, SMPTE310M, SMPTE305M
(SDTI) |
| Signal standard | SD-SDI(270Mbps), HD-SDI(1.485Gbps), 3G-SDI(2.97Gbps) |
| Resolution | 10 Bit |
| Signal level | <380mVp-p |
| Impedance | 75Ω |
| Connector | SMB |
| SDI output |
| Signal level | 800mVp-p±10% |
| Rise/Fall time | <0.8ns |
| HD-SDI Jitter | <0.2UI(134ps)@100kHz, <1.0UI(673ps)@10Hz |
| SDI Jitter | <0.2UI(740ps)@10Hz, 0.2UI(740ps)@1kHz |
| Impedance | 75Ω |
| Connector | SMB |
| Optical Interface |
| SFP | Simplex LC, 3,125Gbps. ≤120km transmission distance |
| Standard SM wavelength | 1310nm, 1550nm |
| CWDM wavelength | 1270~1610nm, 20nm grid according ITU-T |
| Temperature range | 0~70˚C |
| Electrical |
| Power | 5VDC, 1A |
| Consumption | <5W |
| LED Indicator |
| FLT | Fiber link status (Transmitter) |
| FLR | Fiber link status (Receiver) |
| PWR | Power status |
| Mechanical |
| Dimensions (LxWxH) | 58 x 21 x 20 mm |
| Weight | 100g/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 |
| LNK-M3G-SMB1V-20 | SMB 3G/HD/SD-SDI Optical Micro-Extender, 1310/1550nm, Simplex LC,
Single Mode, 20KM including Transmitter and Receiver, used by pairs |
Application
