How to solve the interference of video transmission in monitoring?

In monitoring, the phenomenon of interfering with video transmission has caused us headaches. Here are some common interference phenomena and solutions. We hope to help you!

First, the image is transmitted in oblique strips

This may be because the monitoring system operating environment has 0-6MHz harmonics and multiplier interference, and there is a certain extent, this time you can use video transmission anti-jamming device, video cable shielded network cable is greater than 64 mesh. (Note for elevators: Tensile strength of video cables. There are special self-supporting flat composite elevator monitoring cables on the market. These cables combine video coaxial cables, power cables, data cables and steel strands to form a single cable. Flat ribbon cable, so that the tension of the entire cable is taken by the strand, the tensile strength is very good, and the signal cable will not be pulled off due to gravity during elevator operation.

Second, the image distortion (normal clarity)

This may be because the video signal amplitude is too strong to cause the monitor overload to detect the video amplitude of the camera. The standard range is 1Vpp-1.2Vpp.

Third, the image has a horizontal scrolling ripple

This may be because there is a problem with poor filtering of the power supply in the monitoring system. There is a low-frequency interference of 50 Hz. Use an alternative method to identify the source of the interference and replace or repair it.

Fourth, the device under normal circumstances, the image disappears or produces a very messy black and white light with distorted signal

This may be because the monitoring system's working environment has 0-6MHz harmonics and doubler interference, and the amplitude is very strong. The YD-V/RF38 video transmission anti-jammer is used to exceed the amplitude of the video signal. Since the interference signal is strong, pay attention to the signal access resistance. Before disturbing the transmitting end, it should be able to watch normally. The video cable connected to the transmitting end of the camera and the anti-jamming device is a high-shielded or multi-layered shielded cable and is reliably connected. The ordinary video cable can be used for transmission. (Note for elevators: tensile strength of video cables).

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