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Topic: Twisted pair cable


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In the News (Sat 30 Aug 14)

  
  ipedia.com: Twisted pair Article   (Site not responding. Last check: 2007-10-19)
Twisted pair cabling is a common form of wiring where two conductors are wound around each other for the purposes of cancelling out electromagnetic interference known as crosstalk.
UTP or unshielded twisted pair is not surrounded by shielding.
Audio cables that are twisted are often referred to as balanced.
www.ipedia.com /twisted_pair.html   (252 words)

  
 Twisted pair -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-19)
The number of twists per (Any of various measuring instruments for measuring a quantity) meter make up part of the specification for a given type of cable.
Shielded Twisted Pair is rarely used due to the fact that the potential performance increase over UTP is not worth the much greater cost of STP.
Unshielded Twisted Pair (UTP) is not surrounded by (A protective covering or structure) shielding.
www.absoluteastronomy.com /encyclopedia/t/tw/twisted_pair.htm   (284 words)

  
 Twisted pair (Floyd Davidson)
They reduce cable loss at voice frequencies at the expense of amplitude distortion (rolloff at both the high and low end of the voice spectrum) and several other parameter changes that are less important (phase shift, envelope delay, and characteristic impedance of the cable).
Twisted pair transmission lines provide noise immunity compared to a non-twisted pair (generally in excess of 60 dB of immunity, which is a _huge_ amount).
Twisted pair cable, to counter the physical bulk increase caused by the twist, will use thinner insulation, which is effective because common mode rejection is the primary noise reduction mechanism for balanced circuits and the capacitance between conductors does not cause the significant increase in noise which would be seen with a non-balanced circuit.
yarchive.net /phone/twisted_pair.html   (4937 words)

  
 Twisted Pair Testing
In this case, all points that must be tested for twisted pairs must be connected through coax cable and the shields of all the coax wires must be connected together and grounded to the tester chassis.
In poor-quality twisted pair cabling each pair is not shielded, the wires have less than 2 twists per inch and there is a general twisting lay to the bundle every foot or so for the length of the cable.
By using a couple of feet of high quality twisted pair cabling matching the twist pattern of the cable to be tested you can increase the length of the whole assembly being tested thus allowing the tester to get a "better read" on the cable.
www.cirris.com /testing/twisted_pair/twist.html   (1222 words)

  
 Cables - Twisted Pair Cable   (Site not responding. Last check: 2007-10-19)
Twisted pair cables are so named because pairs of wires are twisted around one...
Twisted-pair cable is a type of cabling that is used for telephone...
Twisted pair cabling is a common form of wiring in which two conductors are wound...
www.cable-raider.co.uk /twisted-pair-cable.html   (196 words)

  
 Chapter 4: Cabling
Cable is the medium through which information usually moves from one network device to another.
Each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other electrical devices.
Although coaxial cabling is difficult to install, it is highly resistant to signal interference.
fcit.usf.edu /network/chap4/chap4.htm   (1303 words)

  
 [No title]
Characteristic impedance of twisted pair is determined by the size and spacing of the conductors and the type of dielectric used between them.
Stranded cable is susceptible to degradation from moisture infiltration, may use an alternate color code, and should not be used for long cables because of usually poorer specifications than same category solid core cable designed for in-wall wiring.
One a characteristic of Category-5 cable is that the pairs of wires are twisted at different rates inside the cable (this is done intentionally to reduce pair to pair crosstalk).
www.epanorama.net /documents/wiring/twistedpair.html   (12474 words)

  
 Data Communications Cabling FAQ
For fiber optic cables not in tension, the minimum bend radius is 10 x diameter; cables loaded in tension may not be bent at less than 20 x diameter.
Crossed pair: A pair is connected to different pins at each end (example: pair 1 is connected to pins 4and5 at one end, and pins 1and2 at the other).
Reversed pair: The two lines in a pair are connected to opposite pins at each end of the cable (example: the line on pin 1 is connected to pin 2 at the other end, the line on pin 2 is connected to line 1).
www.faqs.org /faqs/LANs/cabling-faq   (3530 words)

  
 Shielded twisted-pair cable boasts EMI fighting qualities / Hyperline
This cable should not be confused with ScTP (screened twisted-pair) or FTP (foil twisted-pair) used with Ethernet networks and designed with pairs surrounded by a single foil or braided screen.
Cable with pairs that are individually shielded is called PiMF (pairs in metal foil), which is also sometimes referred to as SSTP (double shield twisted-pair) cable.
ANEXT is increased by the propensity of cables to absorb signals from neighboring cables in close proximity.
eng.hyperline.ru /info/shielded   (2057 words)

  
 Twisted Pair Cable
Twisted Pair Ethernet (10baseT/UTP), except: it does not make sense to connect 100baseT-hubs with a 10base2 (10Mhz) Backbone.
Cable used is 22 to 26 AWB unshielded twisted pair (standard telephone wire) at last Category 2 with two twists per foot.
Although there are a variety of types of twisted-pair cable types, shielded and unshielded are the two most important.
www3.baylor.edu /~Sharon_P_Johnson/etg/cabletwisted.htm   (556 words)

  
 twisted-pair_coaxial_cable.html   (Site not responding. Last check: 2007-10-19)
The Coaxial Cable is a single strand of “insulated wire surrounded by a second wire made up of woven metal and a third plastic, outer covering.
The Coaxial Cable is normally used for Television due to the low susceptibility to noise.
These two transmission mediums compared to The Fibre Optic Cable, have their advantages as Fibre Optic Cable has its disadvantages of being expensive and relatively difficult to install, therefore Twisted-pair wires and Coaxial cable is more cost effective to have and install.
golum.riv.csu.edu.au /~agarts01/twisted-pair_coaxial_cable.html   (266 words)

  
 UTP vs STP
cable are inherently different in design and manufacture, their purpose should be the same, to provide reliable connectivity of electronic equipment.
STP cable also has drawbacks; for example, its attenuation may increase at high frequencies, and its balance (or longitudinal conversion loss) may decrease if the effects of the shield are not compensated for, which leads to crosstalk and signal noise.
All cables, for example, are tested on the reel at the point of manufacture, and are also tested as a complete cabling system within the individual applications for which they are certified.
www.exergia.biz /Lightning/lightning4.htm   (2493 words)

  
 Articles - Twisted pair   (Site not responding. Last check: 2007-10-19)
It is the primary wire type for telephone usage and is very common for computer networking, especially in patch cables or temporary network connections due to the high flexibility of the cables.
FTP cable is basically a UTP cable surrounded by an outer foil shield increasing protection from external interference.
Twisted pair cabling is standardized into various categories by number, which indicate signal integrity attributes.
www.kingj.com /articles/Twisted_pair   (262 words)

  
 Cyclops 2 Twisted Pair Cable Stripper - 15010
Stripping cable jackets from the delicate wires within can be a tricky process.
Pull the stripped end out from the cable stripper; be sure to fold the braid back over the cable jacket prior to inserting it into your compression connector.
Additional cable strippers are also available for RG6 coax cable, RG6 quad coax cable, and RG59 coax cable (all sold separately).
www.smarthome.com /89252.html   (173 words)

  
 Ola Eriksson's guide to building a twisted pair cable
When working with Ethernet-cables, you will usually have a cable with four twisted pairs in, and in most cables, each pair has its own color (for example, orange, green, blue and brown).
It is very important that, when you put the cable togather, the 'Data Send' pins (plus and minus) shares one pair of twisted conductors, and the 'Data Receive' pins share another one.
Crossover cables can be used to connect two computers togather without the need for a hub or switch.
www.mreriksson.net /miscdocs/tpcable   (648 words)

  
 TCT -- Twisted-Pair Cable Tester
Since the cable wiring configurations are the same, tester can be used with CAT3, CAT5, and CAT6 cables.
A counter driver applies all 8-bit combinations to the cable and compares the input with the output.
Cable Driver and Monitor:  This section includes a clock oscillator, an 8-bit counter and the cable driver.
www.unistep.ca /labs/TCT_page.htm   (360 words)

  
 find: twisted pair cable capacitance
25 Pair Color Code Chart 10BASE-T Cable Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of canceling out electromagnetic interference...
Twisted Pair Introduces Online Access to Invoices (Oct 24, 2003) Customer Testimonials In our three years of dealings with Twisted Pair, they've proven to be reliable and responsive, with an exemplary...
Cable Capacitance Calculator, accounts for fixturing length, cable length, number of wires...
www.hansi-suessenbach.de /twisted_pair_cable_capacitance.html   (247 words)

  
 twisted pair network cable - The cable Spot
The cable Spot would like to thank you for stopping by the best twisted pair network cable site the net has to offer.
The staff at The cable Spot has gone through the web and has gathered a list of links that offer the most information on twisted pair network cable.
Cat 5 cable is called unshielded twisted pair cable because...
www.womensoc.com /network-cable/twisted-pair-network-cable.html   (536 words)

  
 Cables - Unshielded Twisted Pair Cable
A collection of Unshielded Twisted Pair Cable white papers, case studies, webcasts and product information that will help your IT purchase decision.
Cables Unlimited 3-Foot Black UTP (Unshielded Twisted Pair) Cat5e Snagless Boot Cable Item #: C250-1006 P1.
Cables Unlimited 3-Foot Snagless UTP (Unshielded Twisted Pair) Gray Cat5e Cable Item #: C250-1006 P3.
www.cable-raider.co.uk /unshielded-twisted-pair-cable.html   (220 words)

  
 Network Cable Types & Standards! Coaxial, Twisted Pair (STP, UTP), Fibre Optic
Coaxial cable is made of two conductors that share the same axis; the center is a copper wire that is insulated by a plastic coating and then wrapped with an outer conductor (usually a wire braid).
The purpose of twisting the wires is to eliminate electrical interference from other wires and outside sources such as motors.
Twisted-pair cable has several advantages over other types of cable (coaxial and fiberoptic): It is readily available, easy to install, and inexpensive.
www.helpline4it.com /study_notes-article43.html   (975 words)

  
 What is twisted-pair cable? - A Word Definition From the Webopedia Computer Dictionary
A type of cable that consists of two independently insulated wires twisted around one another.
The use of two wires twisted together helps to reduce crosstalk and electromagnetic induction.
While twisted-pair cable is used by older telephone networks and is the least expensive type of local-area network (LAN) cable, most networks contain some twisted-pair cabling at some point along the network.
www.webopedia.com /TERM/t/twisted_pair_cable.html   (170 words)

  
 Twisted-pair cable
A type of cable made by intertwining two separate insulated wires together.
Shielded Twisted Pair (STP) has a fine wire mesh surrounding the wires to protect the transmission; Unshielded Twisted Pair (UTP) does not.
Shielded cable is used in older telephone networks, network, and data communications to reduce outside interference.
www.computerhope.com /jargon/t/twispair.htm   (78 words)

  
 Cable - Twisted Pair Structured Backbone / Patch
Cable - Twisted Pair Structured Backbone / Patch
Cable - Twisted Pair (Structured) Backbone and Patch
The following twisted pair cables offer the highest level of performance, each being independently certified and approved.
www.contec.co.uk /cable.htm   (114 words)

  
 Twisted Pair Cable   (Site not responding. Last check: 2007-10-19)
In its simplest form, twisted -pair cable consists if two insulated strands of copper wire twisted around each other.
Maximum cable length segment is 100m.the wire is twisted to reduce interference.
STP uses a foil wrap between and around the wire pairs, and internal twisting of the pairs.
www.users.bigpond.com /marcpelusi/basics/twisted_pair.htm   (177 words)

  
 netcallers.com - twisted pair cable pictures
Find twisted pair cable pictures and more at Lycos Search.
Read about twisted pair cable pictures in the free online encyclopedia and dictionary.
Find results for twisted pair cable pictures and anything else you are looking for instantly!
www.netcallers.com /Twisted-Pair-Cable-Pictures.aspx   (400 words)

  
 Utilities & Telecommunications : 3M™ Twisted Pair Flat Cable   (Site not responding. Last check: 2007-10-19)
3M™ Twisted Pair Flat Cable,.050" 28 AWG Stranded, 270mm Repeat, 3782 Series
3M™ Twisted Pair, Flat Cable,.050" 28 AWG Stranded, 10 Color Repeat, 1700 Series
3M™ Twisted Pair, Flat Cable,.050" 28 AWG Stranded, Halogen Free Polyolefin, 2100 Series
products3.3m.com /catalog/us/en001/utilities_telecom/telecom_oem/node_GS866GYPQXbe/root_GST1T4S9TCgv/vroot_MWF1RCPQM7ge/gvel_NX1MZZZM8Hgl/command_AbcPageHandler/theme_us_teleoem_3_0   (71 words)

  
 CertiGuide to Network+ - Twisted Pair Cable Naming Conventions
Legacy cable topologies made up of twisted-pair technologies include two primary varieties: those used with IBM-specific networks and those used with vendor-neutral Ethernet networks.
Each has its own naming convention to quickly identify the capabilities of the particular variety of cabling.
Typically, these types of cable are used to construct networks with star topologies.
certiguide.com /netplus/cg_np_TwistedPairCableNamingConventions.htm   (351 words)

  
 StayOnline.com: Bulk Twisted Pair Cable   (Site not responding. Last check: 2007-10-19)
Cable is not returnable once cut from spool.
Bulk Solid Core PVC Category 5e Unshielded Twisted Pair Cable -- 1000 ft. Box, White
Bulk Stranded Core PVC Category 5e Unshielded Twisted Pair Cable -- 1000 ft. Spool, Blue
www.stayonline.com /searchresult.aspx?categoryid=356   (269 words)

  
 emobilecam.com - cat 5 twisted pair cable tester   (Site not responding. Last check: 2007-10-19)
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www.emobilecam.com /Cat-5-Twisted-Pair-Cable-Tester.aspx   (473 words)

  
 netcallers.com - v35 cable twisted pair
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www.netcallers.com /V35-Cable-Twisted-Pair.aspx   (294 words)

  
 Twisted Pair Cable Accessory Tools
Strips PVC insulation Strips outer jacket of AWG 22/4 and 24/4 telephone cable Strips insulation of AWG 22 and AWG 24 wire 3/8 inch and 7/16 inch hex sockets for accessing panels Durable shock-resistant design One-year warranty
RJ45 modular adapter (8-way) Use these adapters to connect butt sets, telephone test sets, tone generators and network test equipment to data and telephone lines using modular plug connections to test the data and signals being carried.
Works especially well when a long length of cable is required for termination
www.sacramentoelectronics.com /pal/twist/tools.html   (151 words)

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