What are the main aspects of shielded cable resistance to external interference?

I. What are the main aspects of shielded cable resistance to external interference? The integrity of signal transmission can be ensured by shielding system. Shielded cabling system prevents the effects of external electromagnetic interference and radio frequency interference on data transmission. Electromagnetic interference (EMI) Low-frequency interference, motors, fluorescent lamps and power lines are common sources of electromagnetic interference. Radio Frequency Interference (RFI) it is high frequency interference, mainly radio frequency interference, including radio, television transmission, radar and other wireless communications. For electromagnetic interference, woven layer shielding is the most effective, i.e. metal mesh shielding, because it has a low critical resistance. For RF interference, metal foil layer shielding is the most effective because the gap created by the metal mesh shielding allows high frequency signals to move in and out freely. For interference fields with a mixture of high and low frequencies, a combination of foil layer and metal mesh shielding should be used, in the form of S/FTP double shielded cables, so that the metal mesh shielding is suitable for interferences in the low frequency range and the metal foil shielding is suitable for interferences in the high frequency range.

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