An essential feature of Ethernet cables is that the wires inside the cable are twisted in pairs (or several pairs of wires are twisted together) and this is why they are referred to as twisted pair cables.
Particularly when it comes to network technology – where we typically deal with high-frequency (balanced) signals - a magnetic field is generated around a conductor during data transmission, which in turn induces the signal of the other wire(s) in the cable (superposition/crosstalk). Hence, to reduce this effect as well as the susceptibility to interference from external electromagnetic influences, twisting/stranding is used. The trick is that by twisting - in contrast to collateral (parallel) wires – both, the electromagnetic fields from outside and the interference radiation inside, act in constantly changing directions and thus, for the most part, cancel each other out.
In addition to the cable sheathing and other technical factors inside the cable (plastic separating elements, plastic filler cores, drain wires to ensure effective grounding, etc.), the shielding of twisted pair cables in particular is a vital feature when it comes to reducing electromagnetic interference.
Cordial offers the adequate twisted pair data cable with the best possible reduction of interfering electromagnetic influences for almost every application in the field of data transmission.
