1Ch Bidirectional 3G-SDI with Loop-out + 1Ch Tally + 2Ch
Bidirectional RS485 or RS422 + 2Ch Stereo Audio + 1Ch Microphone over Fiber Converter
Overview
The LNK-3G-1BV1T2BD2A1M Series represents an advanced fiber optic
transmission solution engineered for professional broadcast and
live production environments. This sophisticated converter
integrates seven distinct signal channels through a single fiber
optic link, combining bidirectional 3G/HD-SDI video with embedded
audio, local loop-through monitoring, tally signaling, dual-channel
bidirectional RS485/RS422 control, stereo audio transmission, and
microphone input capabilities.
Utilizing advanced optical transmission technology, the system
ensures broadcast-grade signal quality with full 1080P resolution
support and compliance with SMPTE standards. The integrated
loop-out functionality enables real-time local monitoring without
interrupting the primary transmission path, while the comprehensive
status indication system provides immediate visual feedback on all
critical operational parameters through multi-color LED indicators.
Specifically designed for mission-critical applications, this
converter delivers exceptional stability and reliability in
demanding environments. The robust construction and advanced error
correction mechanisms guarantee uninterrupted performance across
extended distances, making it ideal for broadcast facilities, live
event production, and security monitoring systems.
This versatile solution finds extensive application in intelligent
transportation networks, educational campus systems, industrial
automation monitoring (power generation, chemical processing, steel
manufacturing, petroleum refining, railway operations), military
security infrastructure (warehouse monitoring, border surveillance,
guard post systems), television broadcast transmission, and stadium
live production environments requiring high-definition video and
multi-channel audio transmission with comprehensive control
capabilities.
Features
Multi-Signal Integration Capability
Enables simultaneous transmission of bidirectional 3G-SDI video with local loop-through monitoring, tally signaling, dual-channel serial control, stereo audio, and microphone input over single-fiber infrastructure
Advanced Video Processing
Features automatic signal reclocking across 270Mbps to 3Gbps data rates, supporting multiple HDTV formats including 720P, 1080i, and 1080P@60Hz with 1920×1080 resolution
Extended Transmission Performance
Robust Industrial Design
Professional Audio Integration
Flexible Control System
Maintenance-Optimized Operation
Broadcast-Grade Quality
Application Scenarios
Live Broadcast Productions
Enables multi-camera remote production for outside broadcast vehicles, supporting bidirectional 3G-SDI transmission with tally control, camera PTZ operation, and audio intercom through dual RS485/422 channels
Sports Venue Systems
Facilitates stadium camera integration for live event coverage, providing program return feeds, commentator microphone signals, and camera control data over single-fiber infrastructure
Broadcast Studio Infrastructure
Supports studio camera systems with loop-through monitoring, tally indication, and bidirectional audio communication for production control room operations
Remote News Gathering
Enables field production systems for electronic news gathering, transmitting camera signals, reporter audio, and control data through compact fiber links
Security Monitoring Centers
Integrates PTZ camera systems in critical surveillance networks, supporting camera control, audio monitoring, and microphone communication for high-security facilities
Industrial Monitoring Systems
Provides remote monitoring solutions for power substations, chemical plants, and transportation infrastructure with extended temperature operation capability
Educational Production Facilities
Supports distance learning networks and campus television systems with multi-signal transmission for classroom production and lecture capture applications
Technical Indexes
| Fiber Optical interface |
| Fiber interface | Simplex LC |
| Transmission distance | 0-20Km |
| 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 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) |
| Data or Tally |
| Physical interface | Industrial standard screw terminal |
| Data type | RS485 (Default) or RS422 (Optional), Tally signal |
| Frequency/Rate support | Max. 115200bps for RS422 Max. 57600bps for RS485 |
| BER | <10ˉ9 |
| Stereo Audio or Microphone |
| Audio input and output | 3.5MM Audio |
| Audio format | @48KHz |
| Electrical |
| Power adaptor | DC 5~25V |
| Power consumption | <5W |
| LED Indicator |
| P/S | Power Supply |
| DAT | Data |
| Mechanical |
| Dimensions (LxWxH) | 120 x 105 x 28 mm |
| Weight | 1.5KG/pair |
| Casing | Aluminum Case |
| Mounting Options | Wall-mount |
| Environmental |
| Working Temperature | -20℃～+70℃ |
| Storage Temperature | -40℃～+80℃ |
| Working Humidity | 0~95% |
| MTBF | ≥100000 hours |
Ordering information
| Model | Description |
| LNK-3G-1BV1T2BD2A1M | 1Ch Bidirectional 3G-SDI with Loop + 1Ch Tally + 2Ch Bidirectional
RS485 or RS422 + 2Ch Stereo Audio + 1Ch Microphone over Fiber
Converter, Single Mode Fiber, LC, 20km, including Transmitter and
Receiver, used by pairs |
