The signal cable is a signal transmission tool. Generally, the signal transmitted by a signal cable is very small. In order to avoid signal interference, there is a shielding layer on the outside of the signal cable. The shielding layer of the wrapped conductor is generally conductive cloth, braided copper mesh or copper (aluminum). The shielding layer needs to be grounded. External interfering signals can be led to the ground by this layer, to avoid interfering signals entering the inner conductor interference and reduce the loss of transmission signals.
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