1. Product Overview
This broadcast-grade 12G-SDI fiber transmission system consists of one Transmitter (T) unit and one Receiver (R) unit. It supports **3-ch 12G-SDI video input on transmitter side, 1-ch 12G-SDI loop output on transmitter**, paired with **1-ch 12G-SDI input and 3-ch 12G-SDI output on receiver side**, together with integrated 10/100/1000M Gigabit Ethernet data transmission over a single optical fiber.
It fully supports 12G/6G/3G/HD/SD-SDI multi-rate auto-adaptive signal, ideal for 4K UHD live production, studio broadcast, church AV, event staging, PTZ camera system, remote video production and long-distance AV signal extension.
Built-in wide-range AC power supply, industrial metal chassis with mounting ears, stable performance for 24/7 continuous operation.
> Transmitter (T): 3 × SDI IN, 1 × SDI OUT (Loop), 4 × Gigabit Ethernet RJ45 switch port, Optical TX port
> Receiver (R): 1 × SDI IN (Loop), 3 × SDI OUT, 4 × Gigabit Ethernet RJ45 switch port, Optical RX port
2. Key Features
✅ Support SMPTE ST 2082 (12G-SDI), ST 2081 (6G-SDI), ST 424M (3G-SDI), ST 292M (HD-SDI), ST 259M (SD-SDI), multi-rate auto-detection and re-clock
✅ 3-ch 12G-SDI transmission, 1 SDI loop out on TX; 3 SDI output + 1 SDI loop in on RX
✅ Integrated 4-port shared Gigabit switch (10/100/1000Mbps auto-negotiation) for Ethernet data, control signal, PTZ camera IP control, tally and intercom data
✅ Single fiber transmission for all SDI video + Ethernet data
✅ Gold-plated 75Ω BNC connector, low reflection loss for broadcast signal
✅ Hot-pluggable SFP optical module, flexible fiber distance options: 10km / 20km / 40km / 80km single mode
✅ Wide AC input power: AC 30~240V, built-in power supply with power switch and IEC inlet
✅ Industrial all-aluminum chassis with rack mounting tabs, excellent heat dissipation
✅ Automatic cable equalization, signal re-clocking on receiver side
✅ Support embedded audio inside SDI stream, no extra audio wiring required
✅ ESD and surge protection, suitable for outdoor and live event environments
✅ Plug-and-play, no software configuration required
3. Interface Definition
Transmitter (T Unit)
1. IN1 / IN2 / IN3: 3 × 12G-SDI Video Input
2. OUT: 1 × 12G-SDI Loop Output
3. 4 × RJ45: Gigabit Ethernet Switch Ports
4. SFP Optical Port: Fiber transmit
5. IEC Power Socket + Red Power Switch: AC power input
Receiver (R Unit)
1. IN: 1 × 12G-SDI Loop Input
2. OUT1 / OUT2 / OUT3: 3 × 12G-SDI Video Output
3. 4 × RJ45: Gigabit Ethernet Switch Ports
4. SFP Optical Port: Fiber receive
5. IEC Power Socket + Red Power Switch: AC power input
4. Application Scenarios
- Live broadcast, TV studio, OB Van outside broadcast
- 4K PTZ camera remote transmission for church, conference room, lecture hall
- Theater, concert, large event AV signal extension
- Remote production, NDI / IP video system backhaul
- Security and industrial high-resolution video transmission
- Stadium, exhibition hall long-distance signal distribution
