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12G/6G/3G/HD-SDI & HDMI 2.0 Bi-Directional Converter
Supports HD & UHD Formats | High Bit Rate Support | Audio Channel Support
The BG-4KBHS is a professional-grade 12G/6G/3G/HD-SDI and HDMI 2.0 bi-directional converter featuring integrated audio embedding and extraction. Designed for uncompromising signal quality and reliability, this converter enables seamless real-time conversion between HDMI and SDI formats without latency or signal loss. Supporting full digital conversion, it maintains uncompressed, lossless video and audio for pristine broadcast performance.
With support for up to 8 audio channels, including 7.1 and 5.1 surround sound, and a high-quality analog stereo embedder and extractor, the BG-4KBHS bridges professional SDI systems with consumer HDMI devices in a single, versatile solution. Its low-jitter SDI output, automatic signal detection, and broad video format support up to 4K@60Hz make it a reliable tool for broadcast studios, post-production, and AV integration environments demanding flexible and high-fidelity signal management.
Supports HD & UHD Formats
720p@50/59.94/60Hz, 1080i@50/59.94/60Hz, [email protected]/24/25/29.97/30/50/59.94/60Hz, [email protected]/24/25/29.97/30/50/59.94/60Hz
High Bit Rate Support
Handles SDI bit rates of 270 Mbps up to 11.88 Gbps, including fractional rates for broadcast compatibility
Audio Channel & Stereo Embedder
Supports up to 8 audio channels, including 7.1 and 5.1 surround sound; provides high-quality analog audio embedding and extraction for flexible audio routing
Lossless Real-Time Conversion
Converts HDMI to SDI and SDI to HDMI without latency or quality loss; maintains uncompressed, lossless digital video and audio throughout the conversion process
Auto SDI Detection
Automatically detects and switches between 12G, 6G, 3G, and HD-SDI signals
HDMI 2.0 & Multi-Format Support
Fully compatible with HDMI 2.0 and lower versions for flexible source integration; compatible with professional SDI equipment and consumer HDMI devices for versatile workflow integration
Compact & Rack-Mountable Design
Optimized for studio and field applications requiring space-efficient hardware
Low-Jitter SDI Output
Ensures stable and reliable SDI signal transmission for professional video workflows
Connection Diagram
A camera connects by HDMI to the BG-4KBHS, and SDI runs to a BG-HDVS42U video switcher and a monitor.
Front and Rear Panels
1. Power LED - Indicates device power status
2. Signal LED - Indicates active video signal detection
3. Stereo Audio Output - Extracts stereo audio from SDI or HDMI input
4. SDI IN - Accepts 12G/6G/3G/HD-SDI video input
5. SDI OUT - Outputs 12G/6G/3G/HD-SDI video
6. Mode Slide Switch - a. Right: Convert HDMI -> SDI b. Left: Convert SDI -> HDMI
7. Audio/Firmware Slide Switch - a. Right: F/W update mode b. Mid: Use HDMI input audio as SDI audio source c. Left: Use stereo audio input as SDI audio source
8. USB-C Port - For firmware updates
9. DC Power Input (+5V) - Connect to a 5V DC power supply
10. Stereo Audio Input - Embeds stereo audio into SDI output
11. HDMI Loop Out - Pass-through connection for HDMI display monitoring
12. HDMI IN - Connects to an HDMI source (HDMI male-to-male cable)
13. HDMI OUT - Connects to an HDMI display (HDMI male-to-male cable)
| SDI Standards | 12G / 6G / 3G / HD-SDI |
|---|---|
| HDMI Standards | HDMI 2.0 |
| Auto SDI Detection | 12G / 6G / 3G / HD-SDI (Auto) |
| Video Bandwidth | SDI: 11.88 Gbps, 11.88/1.001 Gbps; HDMI: Up to 18 Gbps |
| Video Support | 12G-SDI: 4K2K @50/59.94/60Hz; 6G-SDI: 4K2K @23.98/24, 25, 29.97, 30Hz; 3G-SDI: 1080p @50/59.94/60Hz; HD-SDI: 720p @50/59.94/60Hz, 1080i @50/59.94/60Hz, 1080p @23.98/24/25/29.97/30Hz; HDMI: Up to 4K2K @60Hz |
| Input Signal | 1x SDI, 1x HDMI, 1x Audio |
| Output Signal | 2x HDMI, 1x SDI, 1x Audio |
| Output Impedance (SDI) | 75 ohm |
| Synchronization Mode | Internal or External |
| Eye Pattern Characteristics | 12G-SDI: Timing jitter: 0.29 UI, Alignment jitter: 0.13 UI; 6G-SDI: Timing jitter: 0.18 UI, Alignment jitter: 0.06 UI; 3G-SDI: Timing jitter: 0.09 UI, Alignment jitter: 0.03 UI |
| Cable Equalization | 12G-SDI: up to 70m; 6G-SDI: up to 100m; 3G-SDI: up to 190m; HD-SDI: up to 300m |
| Audio Support | Analog Audio: 2-channel; HDMI: Surround Sound (up to 7.1ch) |
| PCB Stack-up | 6-layer board (Impedance control: differential 100 ohm; single 50 ohm) |
| Input | 1x BNC (SDI); 1x HDMI; 1x Audio Jack |
| Output | 2x HDMI; 1x BNC (SDI); 1x Audio Jack |
| BNC Connector | 75 ohm inter-locked socket |
| HDMI Connector | Type A (19-pin female) |
| Housing | Metal enclosure |
| Power Supply | +5V DC |
| Operating Temperature | 32 ~ 104 F / 0 ~ 40 C |
| Storage Temperature | -4 ~ 140 F / -20 ~ 60 C |
| Relative Humidity | 20 ~ 90% RH (no condensation) |
| Package Contents | 1x BG-4KBHS; 1x 5V DC Adapter; 1x Product Manual |