Cable shielding involves conductive layers wrapped around signal conductors to block external electromagnetic fields and prevent internal signals from radiating outward. But how exactly does shielding work? What types are available? And which is right for your application? Let's. Cable shielding is essential to protect data and power transmission from interference, especially in environments with high levels of electromagnetic interference (EMI). Shielding is needed to combat the effects of EMI. Cables can be a main source of transfer for EMI, both. Electromagnetic compatibility, or EMC, "is the ability of electrical equipment and systems to function acceptably in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as. All common video signal types--composite, rf, s-video, component, SDI, and the various flavors of RGB--are ordinarily run in coaxial cables, or, as the shorthand term goes, "coax. " The features of coax which make it ideal for handling these multiple signal types are its excellent impedance.
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