Video Balun Selection Guide
Guide to selecting video baluns.
What is a Video Balun?
A video balun is a device that converts between unbalanced coaxial cable and balanced twisted pair cable. This enables video signal transmission over inexpensive Ethernet wiring.
Types of Video Baluns
Passive Baluns
Passive baluns require no external power and work bidirectionally. They can transmit video up to 300 meters without amplification.
Active Baluns
Active baluns include amplification requiring power. They extend transmission distance up to 1,500 meters.
Power over Balun (PoB)
Integrated power transmission allows simultaneous video and power delivery over a single twisted pair cable.
Key Selection Criteria
Transmission Distance
Measure the actual distance between cameras and DVR/NVR. Add 10% buffer for safety.
Video Format Compatibility
Ensure balun compatibility with your video format: analog CVBS, HD-TVI, HD-CVI, AHD, or IP.
Resolution Support
Higher resolution cameras require baluns rated for greater bandwidth.
Environmental Rating
Outdoor installations need UV-resistant, weatherproof baluns.
FAQ
What is the maximum distance for passive baluns?
Typically 300 meters for standard resolution video.
Can I use any Cat5 cable with video baluns?
Cat5e or higher recommended for optimal performance.
Conclusion
Choosing the right video balun requires understanding your distance requirements, video format, and resolution needs.