Cat 3 Cable Shielding. Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility.compared to a single conductor or an untwisted balanced pair, a twisted pair reduces electromagnetic radiation from the pair and crosstalk between neighboring pairs and improves rejection of external electromagnetic interference. Data, audio, and video cable
Each of the 4 individual pair are shielded with mylar aluminum foil. Any disruptions in the path can raise the impedance and lower the shielding effectiveness. The improved specification and shielding allows cat6a to provide more consistently reliable speeds in difficult environments.
It comes either in continuous lengths, on a reel or cut into lengths.
Practical guidelines for effective shielding 1. It comes either in continuous lengths, on a reel, or cut into lengths. However it can be used for networks carrying frequencies up to 20 mhz. Shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs.