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Home > Tech > RF Wireless Module Transmission Mode : Video-Baseband Optical-Fiber

RF Wireless Module Transmission Mode : Video-Baseband Optical-Fiber

Video baseband transmission

It is the most traditional TV monitoring transmission mode. It does not deal with the baseband signal of 0 ~ 6MHz video, but directly transmits analog signal through coaxial cable (non-balanced). Its advantages are: short distance transmission image signal loss is small, low cost, system stability. Disadvantages: short transmission distance, high frequency component attenuation of more than 300 meters, can not guarantee the image quality; One cable is needed for the video signal along the way, and another cable is needed for the transmission control signal. Its structure is star structure, large amount of wiring, difficult maintenance, poor scalability, suitable for small systems.

Optical fiber transmission

Common analog optical terminal machine and digital optical terminal machine, is the best solution to solve dozens or even hundreds of kilometers of television monitoring transmission, through the video and RXB12 control signal into laser signal transmission in the optical fiber. Its advantages are: long transmission distance, low attenuation, good anti-interference performance, suitable for long-distance transmission. Its disadvantages are: for a few kilometers of monitoring signal transmission is not economical; Light welding and maintenance need professional and technical personnel and equipment operation and treatment, high maintenance technical requirements, not easy to upgrade and expand capacity.

Wireless RXB12 transmission technology Network transmission is a monitoring transmission method to solve the problem of long-distance and extremely scattered points between cities. It uses MPEG2/4 and H.264 audio and video compression format to transmit monitoring signals. Its advantage is: the use of network video server as monitoring signal uploading equipment, as long as there is the Internet network, the installation of remote monitoring software can be monitored and controlled. Its disadvantages are: limited by network bandwidth and speed, ADSL can only transmit small picture, low picture quality images; Only a few to a dozen frames of images can be transmitted per second. The animation effect is very obvious and there is a delay, so real-time monitoring cannot be achieved.