Introduction
In today's fast-evolving broadcast and professional AV industries, the demand for high-bandwidth, low-latency, and long-distance video transmission has never been greater. Baudcom, a leading innovator in fiber-optic communication solutions, introduces its latest breakthrough: Mini 12G-SDI Fiber Converter with Tally and RS485 (Model: BD-12G-1V1T1D).
This compact yet powerful device delivers broadcast-grade 4K video over fiber, transmitting 12G-SDI signals (with embedded audio), Tally over fiber, and bidirectional RS485 fiber extender control data—all with zero latency. Whether for live sports production, remote broadcasting, or industrial AV applications, this converter ensures reliable, long-distance signal integrity while simplifying system integration.
1. What is a SDI video fiber converter
The SDI video fiber converter is used to convert SDI camera signals into optical signals for transmission. The HD-SDI high-definition video fiber transmitter/receiver adopts digital encoding technology to achieve long-distance, bidirectional transmission of HD-SDI video signals over a single-mode fiber, with a maximum transmission distance of up to 80 km without distortion or the need for signal repeaters.
In addition, video fiber converters can also support the conversion of VGA, DVI, and HDMI signals into optical signals for long-distance transmission. These are respectively known as VGA video fiber converters, DVI video fiber converters, HDMI video fiber converters, and so on.
Beyond high-definition, long-distance, lossless video transmission, audio fiber converters can realize high-fidelity, lossless audio transmission. At present, professional-grade converters can achieve 24-bit AD/DA conversion with a 128K sampling rate, delivering broadcast-level transmission quality.
2. Product Overview
The Baudcom BD-12G-1V1T1D is a miniature, standalone fiber-optic converter that bridges the gap between 12G/6G/3G-SDI cameras and fiber-based transmission systems. It consists of a transmitter (Tx) and receiver (Rx) pair, enabling seamless conversion between electrical SDI signals and optical signals for ultra-long-distance video transport.
Core Functionalities:
12G-SDI Video Transmission – Supports 4K@60Hz (3840×2160), 1080P, 720P, and other broadcast resolutions.
Embedded Audio – Each SDI channel carries 8 channels of high-fidelity audio.
Tally Signal Support – Enables real-time camera status feedback for live production.
Bidirectional RS485 Control – Allows remote PTZ camera control and device management.
Local Monitoring via 12G Loop-Out – Ensures signal integrity verification without additional hardware.
Form Factor & Compatibility
In a multi-vendor environment, equipment from different manufacturers must work together seamlessly. This requires the SDI video fiber converter to have strong compatibility. Compatibility involves not only the physical connection between devices, but also the consistency of signal formats, transmission protocols, and control commands. Good compatibility ensures that equipment from various manufacturers can be smoothly integrated, improving work efficiency and reducing the likelihood of malfunctions. Our SDI video fiber converter offers excellent compatibility and is compatible with devices from major manufacturers.
Compact Design: Ideal for space-constrained setups (e.g., OB vans, rack-mounted systems).
Hot-Swappable: Plug-and-play operation minimizes downtime.
Backward Compatibility: Works with 6G-SDI, 3G-SDI, HD-SDI, and SD-SDI sources.
3. Key Features & Technical Specifications
3.1 Video Performance
|
Parameter |
Specification |
|
Max Resolution |
4K@60Hz (3840x2160) |
|
Supported Standards |
ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), ST-259 (SD) |
|
Color Depth |
10-bit, 4:2:2 / 4:4:4 |
|
Frame Rates |
23.98, 24, 25, 29.97, 30, 50, 59.94, 60 fps |
3.2 Fiber Transmission Capabilities
|
Parameter |
Specification |
|
Transmission Distance |
10km to 80km (single-mode fiber) |
|
Fiber Technology |
Supports WDM/CWDM/DWDM for multiplexing |
|
Optical Dynamic Range |
Ultra-high, no manual adjustment needed |
|
Signal Integrity |
Auto cable equalization & re-timing (SMPTE-compliant) |
|
4K video over fiber |
4K@60Hz, 10-bit 4:2:2/4:4:4 color |
|
Tally over fiber |
GPIO-based, SMPTE-compliant signaling |
|
RS485 fiber extender |
Bidirectional, up to 115.2kbps |
3.3 Audio & Control Features
8-Channel Embedded Audio (per SDI channel).
Tally Signal Integration – Supports GPIO-based tally for broadcast workflows.
RS485 Bidirectional Control – Enables remote PTZ camera adjustments.
3.4 Reliability & Ease of Use
Hot-Pluggable – No system reboot required.
Broadcast-Grade Components – Industrial-grade chipsets for 24/7 operation.
Low Power Consumption – Energy-efficient design.
4. Applications
4.1 Live Broadcast & Sports Production
Broadcast fiber optic transmission in 4K OB Vans: Extend camera feeds over 80km with 4K video over fiber, while integrating Tally over fiber for crew coordination and RS485 fiber extender for PTZ control.
Tally Integration: Real-time camera status for directors and switchers.
4.2 Remote Production & IP-Based Workflows
Cloud Broadcasting: Fiber-based 4K contribution feeds.
Multi-Camera Studios: Centralized RS485 control for PTZ rigs.
4.3 Industrial & Medical AV
Surgical Imaging: Zero-latency 4K endoscopy feeds.
Security & Surveillance: Long-distance PTZ camera control via RS485.
4.4 Military & Aerospace
EMI-Immune Transmission: Secure video in high-interference environments.
4.5 Studio Infrastructure
Supports internal high-speed links within studio environments, connecting cameras, switchers, and monitors.
4.6 Event Production
Provides reliable connectivity for live events, conferences, and trade shows, ensuring seamless video delivery.
4.7 Cinematic and Post-Production Use
Assists in high-resolution transmission over long distances, enabling flexible workflows in film and television projects.
5. Competitive Advantages
5.1 vs. Traditional Copper SDI Extenders
|
Feature |
Copper Extenders |
Baudcom Fiber Converter |
|
Max Distance |
≤100m (with boosters) |
Up to 80km |
|
EMI/RFI Immunity |
Poor |
Fully immune |
|
Latency |
Variable (due to repeaters) |
Zero latency |
|
Future-Proofing |
Limited to 3G-SDI |
Supports 12G-SDI & 4K@60Hz |
5.2 vs. Competing Fiber Converters
Smaller Footprint – Fits tight broadcast racks.
Tally + RS485 in One Unit – Reduces system complexity.
Auto Signal Optimization – No manual tuning required.
6. Design and Ease of Use
Designed with professional users in mind, the Mini 12G-SDI Fiber Converter boasts a compact, portable footprint suitable for tight equipment racks or field deployment. Its user-friendly interfaces allow quick setup and adjustments, reducing operational complexity.
The device features intuitive controls, status LEDs, and straightforward port arrangements, making it accessible to technicians of varying experience levels. Its power supply options include standard AC/DC adapters, with optional redundancy for mission-critical applications.
A standout feature of this converter is its ability to transmit tally and reverse RS485 signals over fiber, enabling comprehensive control and status feedback. In live production environments, tally signals indicate camera status to directors and operators, improving coordination.
The reverse RS485 channel facilitates device communication, remote control, and configuration, streamlining workflows in complex broadcast or surveillance networks. This bidirectional signaling enhances operational flexibility, especially in multi-camera remote systems, mobile units, and distributed monitoring setups.
7. Future Outlook and Technology Trends
As broadcast and live event industries evolve towards higher resolutions and lower latency demands, solutions like the Mini 12G-SDI Fiber Converter will become indispensable. Emerging technologies such as IP-based workflows, 8K video, and cloud broadcasting necessitate infrastructure capable of handling vast data rates with reliability.
The integration of wavelength-division multiplexing techniques and high dynamic range support demonstrates Baudcom's commitment to innovation. Anticipated updates may introduce features like automation, remote management via network protocols, and enhanced interoperability with IP systems.
8. Conclusion
The Baudcom Mini 12G-SDI Fiber Converter sets a new standard for broadcast fiber optic transmission, combining 4K video over fiber, Tally over fiber, and RS485 fiber extender capabilities in a single, future-proof solution.
By embracing fiber optic technology and sophisticated digital transmission standards, users can achieve unprecedented flexibility and operational efficiency, paving the way for next-generation multimedia production and distribution. As broadcast requirements continue to expand and diversify, having robust, adaptable equipment like Baudcom's Mini 12G-SDI Fiber Converter is no longer a luxury—it's a necessity for delivering excellence in every frame.