http://www.cableconnector.net/....audio-video-cable/3-
Audio vidio cable
In the process of making a video cable, first of all, the correct video cable and connector must be selected. When choosing a cable, you should first pay attention to its nominal impedance. There is a cable with a characteristic impedance of 50惟 that is very similar to a video cable in appearance and must not be confused. In addition, attention should be paid to whether the cable or connector is oxidized. The cable or connector should be scrapped or disposed of according to the situation. Otherwise, the oxide will cause the solder joint to be weak,
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