12G-SDI fiber extender with return RS485 and 2-Channel Reverse Tally

Model: F-12G-SDI-D-T-TxRx
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Descripción

12G-SDI with Reverse RS485, and 2-Channel Reverse Tally over fiber Transmission System (TX/RX Pair)

The F-12G-SDI-D-T-TxRx : 1-channel 3G-SDI Fiber Transmission System is a professional-grade optical transceiver designed for long-distance video, data, and tally signal transport over a single optical fiber. It features one 12G-SDI input with loop-out, two reverse RS-485 data channels, and two reverse tally channels (one red, one green), providing a complete camera-to-control-room communication link.

The system is compliant with EN50083-9, SMPTE259M(C), SMPTE292M, SMPTE424M and ST2082-1 standards, ensuring full compatibility with broadcast video formats including SD, HD, and 12G-SDI. The integrated SFP optical module supports pathological code video and irregular bitrates, maintaining stable video image transmission under any condition. Built-in clock recovery and jitter reduction circuits restore signal integrity, while input cable equalization compensates for signal loss over long coax runs—supporting up to 100 meters of SDI cable.

The RS-485 data interface provides transparent, real-time control signal return, ideal for camera control units (CCU), PTZ commands, or intercom systems. The dual tally return function provides camera status indication to operators or talent on set, with separate red and green light control channels.

The device operates on a wide 5–30V DC power range, supporting both barrel DC and USB Type-C inputs for flexible power options in studio or field use. Utilizing single-mode fiber, the transmission distance can reach up to 10 km without loss or delay.


Application Scenarios:

  • Broadcast Studios: Connect studio cameras to control rooms, carrying video, camera control, and tally over a single fiber.

  • Outside Broadcast (OB) Vans: Ideal for mobile production trucks that require compact, lightweight, and reliable long-distance camera feeds.

  • Live Event Production: Transmit camera signals and operator feedback during concerts, sports, or church events with synchronized tally indication.

  • Remote Camera Systems: Extend camera control and monitoring to remote locations such as arenas, auditoriums, and surveillance installations.

  • Industrial and Medical Imaging: Suitable for high-definition video transport in inspection, medical visualization, or live production monitoring systems.

Caracteristicas

  • Standards compliance: SMPTE ST2082-1 (12G UHD-SDI), ST2081-1 (6G UHD-SDI), SMPTE 424M/292M/259M/297M/305M/310M
  • Supports pathological video modes and irregular bitrate signals (SFP)
  • Clock recovery to reduce jitter and process distorted signals
  • Input cable equalization to compensate for cable loss
  • Reverse RS-485 data channel (EIA RS-485)
  • 2-channel TALLY (Red + Green)
  • 1/4 hot shoe mount support
  • Power options: DC (5.5×2.1mm) or USB Type-C
  • Single-mode fiber distance up to 10 km

Dibujos

Selección de modelo

F-12G-SDI-D-T-TxRx – Fiber optic transmitter and receiver kit for one 12G-SDI video channel, with return RS485 data channels and two return Tally signals. -10Km

Transmitter (TX)

  • 12G-SDI IN (BNC)
  • 12G-SDI LOOP OUT (BNC)
  • OPTICAL: LC SFP module interface
  • Reverse outputs: RS485+/RS485-, TALLY R, TALLY G, GND
  • Power: DC 5.5×2.1mm (5–30V) with lock ring + USB Type-C (5V)

Receiver (RX)

  • 2× 12G-SDI OUT (BNC) — same video output
  • OPTICAL: LC SFP module interface
  • Reverse inputs: RS485+/RS485-, TALLY R, TALLY G, GND
  • Power: DC 5.5×2.1mm (5–30V) with lock ring + USB Type-C (5V)

F-3G-SDI-D-T-TxRx – Fiber optic transmitter and receiver kit for one 3G-SDI video channel, with return RS485 data channels and two return Tally signals. -10Km

Accessories & Upgrades

Especificación

Functional
Signal Set 12G-SDI video IN (with loop-out) + 1× reverse RS-485 + 2× reverse TALLY (R/G)
Fiber
Wavelength 1270 / 1330 nm
SFP Module Rate 12 Gbps
Fiber Connector LC
Max Distance 10 km (Single-mode)
Video
Supported Standards SMPTE ST2082-1, ST2081-1, SMPTE 424M, 292M, 259M, 297M, 305M, 310M
SMPTE Rates 270 Mbit/s, 1.48 Gbit/s, 2.97 Gbit/s, 5.94 Gbit/s, 11.88 Gbit/s
Resolution Support Up to 4K60Hz (backward compatible)
Pathological Code Supported
Clock Recovery Supported
Cable Distance < 70 m
Data (RS-485)
Standard EIA RS-485
Transmission Method Reverse data transmission
Baud Rate 0–115200 Kbps
Bit Error Rate < 10-9
Pull-up Resistor 4.7 kΩ
Pull-down Resistor 4.7 kΩ
Termination Resistor 120 kΩ
TALLY
Level Type TTL (5V) / LVTTL (3.3V)
Input Level Range 3.3V – 12V
Output Level Range 0V or 3.3V
Default State No voltage out (0V)
Power
Power Supply DC 5.5×2.1mm / USB Type-C
Input Voltage DC 5–30V (DC input); 5V via USB Type-C
Overload Protection Yes
Power Dissipation < 2 W
Mechanical
Housing Material Aluminium alloy
Dimensions 87.3 × 61.9 × 24 mm
Net Weight 0.35 kg (pair)
Mounting Desktop / 1/4 hot shoe screw
Environmental
Operating Temperature -20°C to +70°C
Storage Temperature -40°C to +85°C
Humidity 5% to 95% (non-condensing)
Working Life > 100,000 hours
Packing
Packing Type Kraft paper
Packing Size 227 × 219 × 54 mm
Packing Weight 0.7 kg

Package Contents

# Item Qty
1 Transmitter (TX) 1
2 Receiver (RX) 1
3 12G pathological code video SFP module (pair) 1
4 1/4 hot shoe mount base 1
5 5P industrial terminal interface 3.81mm 2
6 12V 1A DC 5.5×2.1 power adapter 2
7 User’s manual 1
8 Warranty card / Certificate 1
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