Traditional Culture Encyclopedia - Photography major - Video balun
Video balun
Twisted-pair video transmitter uses UTP (Unshielded Twisted Pair) as the transmission medium, and processes the video signal into a pair of differential signals with equal amplitude and opposite polarity, which is used for medium and long distance video transmission. It can make the distributed reactance of the cable tend to zero and effectively suppress the * * * mode signal. Even in strong interference environment, twisted pair can transmit excellent image signals. Using twisted pair to transmit video signals can solve the problem of long-distance (within 3000 meters) signal transmission in monitoring engineering and reduce the line cost. Features Using twisted-pair video transmitter for video transmission has the following obvious advantages: 1. Long transmission distance and high transmission quality. Because the twisted-pair video transmitter adopts advanced processing technology, it amplifies and compensates the attenuation of video signal amplitude and different frequencies, and maintains the brightness and color of the original image. Good transmission of medium and long distance video signals is realized. 2. Convenient wiring and high cable utilization rate. If UTP-5 cable has four twisted pairs, only one twisted pair is needed to transmit a monitoring video signal, and the rest can transmit audio signals, control signals, power supplies, etc. It can also transmit four monitoring video signals. Improve cable utilization and reduce engineering cost by 20% ~ 50%. 3. Strong anti-interference ability. Twisted-pair video transmitter has excellent anti-interference ability, signals will not interfere with each other, and even in strong interference environment, it can transmit good image signals. 4. High reliability and convenient use. UTP cables are easier to lay. 5. It has surge protection, lightning protection and other protection functions to protect the safe use of cameras and control equipment. Characteristics and application of twisted pair video transmitter 1. Solve the transmission of video signals in the middle and long distance (3000M) 2. Linearity, chroma and brightness level 3. Excellent anti-interference ability 4. Built-in transient protection 5. DC 12v power supply 6. Improve the image clarity of DVR image processor and reduce the influence of interference noise.
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