Editing Twisted pair (section)

==Properties==
Twisted pair has the following useful attributes:<ref name="cirris">{{cite web |url=http://www.cirris.com/testing/twisted_pair/twist.html |title=Twisted Pair Testing |date=25 May 2023 }}</ref>
* Electrical noise going into or coming from the cable can be prevented.
* [[Crosstalk]] is minimized.
* Cheapest form of cable available for networking purposes.
* Easy to handle and install.

Twisted pair has the following limitations:
* Deformation: twisted pair's susceptibility to electromagnetic interference greatly depends on the pair twisting schemes staying intact during the installation. As a result, twisted pair cables usually have stringent requirements for maximum pulling tension as well as minimum [[bend radius]]. This fragility of twisted-pair cables makes the installation practices an important part of ensuring the cable's performance.<ref>{{cite web|title=The Impact of Installation Stresses On Cable Performance|url=http://www.belden.com/docs/upload/TB66.pdf|publisher=Belden|access-date=13 August 2016}}</ref>
* Delay skew: due to different twist rates used to minimize crosstalk between the pairs, different pairs within the cable have different lengths and thus different delays. This can degrade image quality when multiple pairs are used to carry components of a video signal. Low skew cable is available to mitigate this problem.<ref>{{cite web |title=7987R Technical Data Sheet (Metric) |url=http://www.belden.com/techdatas/metric/7987R.pdf |publisher=Belden |access-date=13 August 2016 }}</ref><ref>{{cite web |title=7989R Technical Data Sheet (Metric) |url=http://www.belden.com/techdatas/metric/7989R.pdf |publisher=Belden |access-date=13 August 2016 }}</ref>
* Imbalance (see [[balanced line]]): differences between the two wires in a pair can cause coupling between the [[Common-mode signal|common mode]] and the differential mode. Line differential to common mode conversion produces common-mode currents that can cause external interference and can produce common-mode signals in other pairs. Common mode to differential mode conversion can produce differential mode signals from common-mode interference from other pairs or external sources. Imbalance can be caused by asymmetry between the two conductors of the pair from each other and in relationship to other wires and the shield. Some sources of asymmetry may result from differences in the conductor diameter and insulation thickness.{{efn|In telephone jargon, the common mode is called ''longitudinal'' and the differential mode is called ''metallic''.}}<ref name="Reeve">{{cite book |last=Reeve |first=Whitman D. |date=1995 |title=Subscriber Loop Signaling and Transmission Handbook - Digital |edition=1st |publisher=IEEE Press |isbn=0-7803-0440-3 |pages=[https://archive.org/details/subscriberloopsi00reev/page/215 215–220] |url-access=registration |url=https://archive.org/details/subscriberloopsi00reev/ }}</ref>