There are different types of shielding, such as braided shield, foil and screening. STP cable has a shield inside which is composed of copper tape, a layer of conducting polymer or a braid (made of copper or aluminum mostly). ![]() ![]() In consideration of decreasing or avoiding EMI, shielding is one of the methods applied to protect cabling systems. EMI may cause data error and influence the transmission quality of cabling systems. For example, the natural sources include the sun, thunder storms, etc., while the man-made sources are vehicle ignition systems, cell phones, etc. The external source can be natural or man-made. This disturbance is caused by an external source affecting an electrical circuit by electrostatic coupling, electromagnetic induction, or conduction. EMI, also called radio frequency interference (FRI), is a disturbance. In data communication, electromagnetic interference (EMI) exists in cables. Do you want to know more? Read this article and you will find the answer. ![]() ![]() That’s really difficult to decide if you don’t have enough knowledge of these two kinds of cables. When you prepare to buy Ethernet cables, you have to choose between STP (shielded twisted pair) and UTP (unshielded twisted pair) cables.
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