twisted pair

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twisted pair

[′twis·təd ′per]
(electricity)
A cable composed of two small insulated conductors twisted together without a common covering. Also known as copper pair.

twisted pair

twisted pair
Two insulated electrical conductors, twisted together without a common covering.

twisted pair

(hardware)
A type of cable in which pairs of conductors are twisted together to randomise possible cross-talk from nearby wiring. Inadequate twisting is detectable using modern cable testing instruments.

twisted pair

A thin-diameter wire (22 to 26 gauge) commonly used for telephone and network cabling. The wires are twisted around each other to minimize interference from other twisted pairs in the cable. Alexander Graham Bell invented this and was awarded a patent in 1881. Twisted pairs support less bandwidth than coaxial cable or optical fiber.

Unshielded (UTP) and Shielded (STP)
Twisted pair cables are available unshielded (UTP) or shielded (STP), with UTP being the most common. Shielded twisted pair (STP) is used in noisy environments and protects against electromagnetic interference.

Stranded and Solid
Both UTP and STP come in stranded and solid wire varieties. Stranded is the most common and also very flexible for bending around corners. Solid wire has less attenuation and spans longer distances but is less flexible.


Shielded and Unshielded Twisted Pairs
ScTP (screened twisted pair), also called "foil twisted pair" (FTP), uses one overall shield for more protection than UTP but not as much as STP, which has shields around each wire pair.




   Cable      Band-      Data#  Type       Width      Rate

 1  UTP       Analog voice
 2  UTP                 1 Mbps

 3  UTP/STP   16 MHz,   4 Mbps
 4  UTP/STP   20 MHz,  16 Mbps
 5  UTP/STP  100 MHz, 100 Mbps
 5e UTP/STP  100 MHz,   1 Gbps
 6  UTP/STP  200 MHz,  10 Gbps (<10 m)
 6a UTP/STP  500 MHz,  10 Gbps (>10 m)

 7  STP      600 MHz   10 Gbps
 7a STP     1000 MHz   40 Gbps (<15 m)



The Real Twisted Pair
References in periodicals archive ?
- Complete modularity, with replaceable SFP modules both for uplink (PON ONT) and downlink (G.hn over twisted-pair, G.hn over coax, 1G and 2.5G Ethernet over Cat-5e cable).
Scheme of an unshielded twisted-pair cable (UTP): 4 twisted pairs, with different twisting steps (the case of the same orientation of twisted pairs, possible on separate sections of the cable)
Three enhanced Automotive Audio Bus (A2B) transceivers distribute audio and control data plus clock and power over a single, unshielded twisted-pair cable.
New application areas are constantly being considered that might leverage IEEE 802 standards in their networks from wireless, through twisted-pair cabling, to fiber-optic cabling solutions.
The XG-FAST trial conducted in nbn's North Sydney-based lab facilities generated peak aggregate data throughput speeds of more than 8 Gbps over a 30-meter twisted-pair copper cable typically deployed in field.
The first of several Ethernet standards especially tuned to the needs of the in-car automotive market, IEEE 802.3bw-2015 100BASE-T1 will provide 100 Mb/s Ethernet over a single twisted-pair. It is intended to enable the consolidation of these new, as well as legacy, in-car applications on a homogenous network architecture.
According to the company, Category 8 is the next generation of twisted-pair data communication copper cabling and connectivity specifications developed by the Telecommunications Industry Association (TIA) and intended for 40-Gbit/second transmission of data, four times the rate of current Category 6A compliant copper cabling and connectivity technology.
The need for speed on twisted-pair Ethernet has been created by the arrival of the 802.11ac wireless standard that is capable of multi-gigabit data rates, as it would be ridiculous to have a multi-gigabit wireless modem fed by a cable that can only handle a gigabit.
twisted-pair based media with cable and connector types they are familiar with
Its red plastic body packs a lot of high tech for twisted-pair copper cabling and high-frequency signal transmission.
It is available in both top-of-rack and end-of-row form factors and is optimized to provide 10 Gbps throughput for distances of up to 330 feet over Cat6 shielded twisted pair or STP and Cat6A or 7 unshielded twisted-pair or UTP and STP, and up to 181.5 feet over Cat6 UTP copper cabling, using the Intel 10 GbE Ethernet Server Adapters and Panduit TX6A 10Gig Copper Cabling System with MaTriX Technology.