structured cabling installation

Twisted wires reduce interference since the bending area between the wires (which determines the magnetic connection in the signal) is reduced. In a balanced pair operation, the two wires usually carry equal and opposite signals (different mode) which are combined with an add-on at the end. The common mode sound of the two wires (mainly) dissipates in this extension because the same wire has the same level of electromagnetic interference (EMI) which is 180 degrees out of phase. . This has the same effect as removal. Several methods also reduce the amount of electromagnetic radiation from the cable, as well as the weakness it causes.

structured cabling installation

The cable pair is usually unable to carry high bandwidth signals fast enough for LAN communication. The wires also radiate as antennas, so they interfere with other electrical devices. However, two improvements allowed the use of a simple wire for high speed signals.

The first development uses twisted pair cables. Both conductors are tightly twisted (1-3 turns per inch) to connect the signals in the pair of wires. Each pair of wires is twisted at different speeds to reduce interconnection. Hence, "balanced transmission" is used to reduce electromagnetic emissions. Balanced transmission works by placing equal signals but in front of each wire in the pair. The receiving end looks at each wire and sees a sign twice as large as the one it carries. Since each wire radiates energy, they carry the opposite polarity signal, so both wires turn off radiation signals and reduce interference.