NT1310 PPT wk4 Essay examples

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Horizontal Cables

◦ 568-C specifies 100 Ohm 4-pair UTP or 62.5/125 multimode fiber optic cable
◦ Connects patch panel to wall plate information outlet (IO)

Unit 4
Key Concept 1: Cables and Cabling Systems

Backbone Cables

◦ 568-C specifies 100 Ohm 4-pair UTP, 62.5/125 multi-mode or 8.3/125 single-mode optical cable
◦ Connects high speed network devices

Patch Cords

◦ Should be factory made stranded UTP or FO
◦ Connects switch ports to patch panel or host to IO

Copyright 2012, ITT ESI


Copyright 2012, ITT ESI


Wall Plates
◦ A plate that houses an IO and connects to a box in the wall
◦ May be fixed or modular (pictured)

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Cabling Pathways

◦ Physical constructs to attach cables to in route
◦ Conduits and raceways enclose the cable
◦ Cable trays and caddies support the cable

Copyright 2012, ITT ESI

Copyright 2012, ITT ESI




Fiber Protection Systems
◦ Designed to protect optical cable and preserve appropriate bend radius


Copyright 2012, ITT ESI




Now check out the animations from chapter 5, Cabling System Components.

Cable Type

Common Application

UTP Cat 3

10Base-T, 4Mbps Token Ring

UTP Cat 4 (no 568-C)

16Mbps Token Ring

Refer to the Instructor’s Resource Section in the Instructor Guide for Directions on
Downloading the Animations

UTP Cat 5e

100Base-TX, 1000Base-T

UTP Cat 6

100Base-TX, 1000Base-T

UTP Cat 6A

100Base-TX, 1000Base-T, 10Gigagbit Ethernet

25 pair UTP Cat 5e

10Base-T, 100Base-TX, 1000Base-T

Main link to the Animations:

Shielded twisted pair

4 and 16Mbps Token Ring


Screened twisted pair

100Base-TX, 1000Base-T, 10Gigagbit Ethernet

Coax RG-58

Thinnet (10Base2)

Coax RG-59


Coax RG-6/U

CATV, HDTV, satellite, cable modem

Note: You must have an active Internet connection

Copyright 2012, ITT ESI



Four Pairs of Copper Cable
Number of twists varies per inch
No shielding
Very easy to work with 100
Ohm, 24AWG
◦ Solid for horizontal and stranded for patch cable
◦ Most susceptible to
Electromagnetic Interference

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Why copper?
◦ High quality
◦ Well understood
◦ High speeds (upto 10G
◦ Easy to work with
◦ Equipment supporting copper is less expensive



Defined in 2008
500 MHz bandwidth


 50 ohm/20AWG
 End of life
 75 ohm/20AWG
 75 ohm/18AWG
 HDTV, satellite, cable modem

Copyright 2012, ITT ESI

Defined in 2002
250 MHz bandwidth

Cat 6A

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Defined in 1999
100 MHz bandwidth

Cat 6


Cat 5e

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Why not?
◦ Susceptible to EMI and RFI
◦ Eavesdropping difficult to detect ◦ Higher speeds available on other media
◦ Copper is a precious metal and cost will increase as supply diminishes Copyright 2012, ITT ESI




Best Practices for Installation

Tone and Probe
◦ Tone generator applies power to one end of a cable ◦ Signal can be detected by the amplifier probe when in close proximity of the wire ◦ Used to identify one cable out of several

◦ Have a plan!
◦ Follow standards
◦ Do not exceed distance limits: horizontal max 90m and patch cable max 5m at each end
◦ Be careful not to stretch cable when pulling – use lubrication, if necessary
◦ Be careful to not exceed bend radius
◦ UTP should cross electrical cables at 90 degrees and never run in parallel
◦ Properly support cables
◦ Keep the job neat: get referrals and easy servicing
◦ Test all circuits
◦ Document everything

Copyright 2012, ITT ESI


Copyright 2012, ITT ESI

Wire-Map Testers

◦ Used to detect wiring errors or broken cables
◦ Performs end to end continuity test on each wire ◦ Necessary to provide cable certification


Test and certify four common problems