CCTV video baluns, also known as UTP baluns, allow traditional coax cable to be replaced by category 5 and other forms of twisted pair wire in CCTV video camera & surveillance installations. Video baluns allow installers to use more cost effective structured cabling techniques to wire security cameras. By using video baluns, UTP wire such as cat-5 can be run over longer distances easier than coaxial cable and for less money. Active balun transceivers enable UTP wires for cameras to be run distances up to 6,000 feet.
Active and Passive Video Baluns
Composite video signal normally carries a 1V peak to peak signal. Passive baluns do not alter the intensity of the signal, and merely transfers it from coaxial to Cat5 connectivity or vice versa. However, for long range applications, the signal will naturally degrade. Therefore, active baluns are useful for intensifying the signal and transmitting a stronger signal to the receiving balun. An active balun on the receiving side will receive a weakened signal and intensify it before sending it to the video surveillance appliance. The longest range active balun will boost the signal up to 5V. Active baluns come in long, medium, short, and adjustable ranges. A quality DVR machine can tolerate video signals ranging from 0.3V to 5.0VActive and passive baluns can exist in three configurations:
|Camera Side||Monitor Side||Description|
|Passive||Passive||No signal intensity change or amplification. 1,000 ft maximum distance.|
|Passive||Active||Receiving balun amplifies weakened signal and sends new stronger signal to surveillance device. 4,000 ft maximum distance.|
|Active||Active||Sending balun sends strengthened signal to receiving balun, which again strengthens the signal and sends to surveillance device. 6,000 ft maximum distance.|