3G-SDI Fiber Converter with Loop-out RS422/485 Audio Mic Tally
Overview
The LNK-3G-1BV1T2BD2A1M Fiber Converter integrates 3G/HD-SDI video with loop-out, tally,
RS422/485 data, stereo audio, and microphone over a single fiber link. Designed for broadcast,
surveillance, and industrial monitoring, it ensures real-time, uncompressed transmission up to 20km.
With wide temperature tolerance, hot-swappable design, and LED indicators, it provides reliable
performance in demanding environments.
Features
Transmits 1Ch 3G-SDI with loop-out, 1Ch tally, RS422/485 data, audio & mic
Supports SMPTE 424M/425M standards with up to 3.2Gbps bitrate
Compatible with 720P, 1080i, and 1080P up to 60Hz formats
Transmission distance up to 20km over single mode fiber
Hot-swappable modules with uncompressed broadcast-grade video
LED indicators for quick status monitoring
Rugged aluminum case, wall-mountable, -20℃ to +70℃ industrial grade
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 |
Panel Picture
Note:
1. To+/To- can drive the LED with current 50MA
2. TIN/TCM for Tally Signal connection
3. T+/R- for RS485 (default) or RS422 (optional)
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