3G-SDI Fiber Extender with Audio RS422 Ethernet Tally Sync
Overview
The LNK-3G2V2BA2D1E1T1S Fiber Extender integrates 3G-SDI video, analog audio, RS422, 100M
Ethernet, tally, and analog tri-level sync into a single fiber channel. Designed for live broadcasting, HD
surveillance, and professional AV setups, it delivers real-time transmission up to 20km with exceptional
stability and noise immunity. Its CWDM design, compact aluminum housing, and full set of interfaces
ensure a future-proof and reliable workflow.
Features
Combines 3G-SDI, audio, RS422, Ethernet, tally & sync over one fiber
Supports SMPTE 424M/292M/259M standards, up to 3.2Gbps
CWDM-enabled optical design with simplex LC interface
Transmission distance up to 20km (extendable to 40/60/80km)
Automatic cable equalization and LED indicators for diagnostics
Rugged aluminum casing with wall-mount or desktop installation
Wide temperature range -20°C to +70°C for industrial reliability
Technical Indexes
| Fiber Optical interface |
| Fiber interface | Simplex LC |
| Transmission distance | 20Km |
| Wavelength | 1310nm/1490nm//1550nm |
| 3G-SDI 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% |
| Video SDI standard | 270Mbps (SD-SDI), 1.485Gbps/M(HD-SDI) |
| SMPTE425M3Gb/s Mapping(3G-SDI) |
| SMPTE424M 3Gb/s serial interface(3G-SDI) |
| Video Input | 1Ch SDI IN + 1Ch SDI OUT on TX |
| Video Output | 1Ch SDI IN + 1Ch SDI OUT on RX |
| Audio |
| Audio interface | 3.5mm Jack |
| Audio format | @48KHz |
| Audio input | 1Ch Audio IN or 1Ch Mic + 1Ch Audio OUT on TX |
| Audio output | 1Ch Audio IN or 1Ch Mic + 1Ch Audio OUT on RX |
| RS422/485 Serial Data |
| Physical interface | Industrial standard screw terminal |
| Data type | RS422/RS485 Bi-Direction |
| Frequency/Rate support | Max. 115200bps for RS422 Max. 115200bps for RS485 |
| BER | <10ˉ9 |
| Tally |
| Tally interface | Industrial standard screw terminal |
| LED load type | Can drive the LED indicator directly |
| Tally input | Tally-2+; Tally-2 - |
| Tally output | Tally-1+; Tally-1 - |
| Ethernet |
| Standards | IEEE 802.3 10Base-T IEEE 802.3u 100BASE-TX IEEE 802.3x full-duplex flow control |
| Interface | 1 x 10/100BASE-TX RJ45 |
| Working mode | Auto-negotiation by default |
| Analog Tri-level Sync |
| Sync Interface | 75Ω BNC |
| Sync | Analog black burst / SDTV bi-level / HDTV tri-level |
| Signal | Analog tri-level sync SMPTE ST 274, ST 276 |
| Return Loss | 46.5 dB to 10 MHz |
| Input | 1Ch Sync IN + 1Ch Sync OUT on TX |
| Output | 1Ch Sync IN + 1Ch Sync OUT on RX |
| Electrical |
| Power Input | DC12V 1A |
| Power consumption | <6W |
| LED Indicator |
| PWR | Power Supply |
| SDI 1~8 | 3G-SDI Signal |
| ACT | RJ45 Ethernet Signal |
| LINK | Link Status |
| Mechanical |
| Dimensions (LxWxH) | 85 x 70 x 30mm |
| Weight | 1.1KG/pair |
| Casing | Aluminum Case |
| Mounting Options | Wall-mount or Desktop |
| Environmental |
| Working Temperature | -20℃～+70℃ |
| Storage Temperature | -40℃～+80℃ |
| Working Humidity | 0~95% |
| MTBF | ≥100000 hours |
Ordering Information
| Model | Description |
| LNK-3G2V2BA2D1E1T1S | 1Ch BIDI 3G-SDI Video + 2Ch Backward Analog Audio + 1Ch BIDI RS422 + 1Ch 100M Ethernet + 1Ch Backward Tally + 1Ch Backward Analog Tri-level Sync over Fiber Converter, SMF, LC, 20KM, including 1 transmitter & 1 receiver, used by pairs |
Application
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