introduction on lan cable - seal tradingthere are several copper cabling systems. we will talk on...

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TECHNOLOGY TECHNOLOGY OF OF

LAN CABLELAN CABLE

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CONTENTCHAPTER Ⅰ INTRODUCTION

CHAPTER Ⅱ LOCAL AREA NETWORK (LAN)

CHAPTER Ⅲ STRUCTURED CABLING SYSTEM (SCS)

CHAPTER Ⅳ OPTICAL FIBER CABLE

CHAPTER Ⅴ STANDARD

CHAPTER Ⅵ COPPER LAN CABLE DESIGN

CHAPTER Ⅶ LAN CABLE MANUFACTURING PROCESS

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CHAPTER Ⅰ

INTRODUCTION

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Historical AspectsSince 1985, telecommunication and computer industry were concerned with the lack of a standard for building telecommunications cabling system.In July of 1991, the first version of the standard was published as EIA/TIA 568.In August of 1991, TSB-36 was published with specifications of higher grades (Cat4 & Cat5) of UTP.Through several revisions, these were merged and revised to EIA/TIA 568A (October 1995), 568B (May 2001) & latest version for Cat6 ANSI/TIA/EIA-568-B.2-1 (June 2002).ISO has developed a cabling standard on an international basis under the title Generic Cabling for Customer Premises ISO/IEC 11801 (referred as class E cabling for Cat6).

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Reference StandardsEIA/TIA 568A (1995, today obsolete) : Commercial Building Telecommunications Cabling Standard

ISO/IEC 11801 :Generic Cabling for Customer Premises

TIA 568-B.2-1 (June 2002) :Commercial Building Standard for Telecommunications Pathways and Spaces

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Recent TendenciesIn 1998, TIA’s Commercial Building Cabling Systems Committee TR41.8.1 task group worked on improved cabling standard and issued PM3727 for the development of new standards for “Enhanced Cat5” & “Next Generation” Cabling systems.

Today, we work on Cat6 of ANSI/TIA/EIA-568-B.2-1 Draft 8 issued in June 2002.

In September 1997, JTC (Joint Technical Committee of ISO) decided to develop a new standard for Cat6 & 7.

IEEE 802.3ab Committee has developed a 1000 Base T Gigabit Ethernet Line Code in 1997 capable of transmit 250 Mbits/sec on each pair of 4 pair cable. Full Duplex for Cat5e. Today, for Cat6 full Duplex the data rate is 1000 Mbits.

DIN 44312-5 will form the basis for new high performance cable.

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Structured Cabling System

TIA/EIA

Building Entrance Equipment Room

Horizontal Cabling Backbone Cabling

Telecommunication Closet

Work Area

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System componentsThere can be optical fiber cabling system as well as copper cabling system.

Optical Fiber system can be discussed later.

There are several copper cabling systems. We will talk on 100 ohms structured cabling system mainly.

This system is a structured copper cabling system available in UTP, S-FTP, FTP or SSTP and conform to ISO/IEC-11801

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100 Ohms system

Full category 5e or 6 systems meet EIA/TIA 568 and ISO 11801

available in UTP, FTP or S-FTP

available with 110 or Krone LSA punch down terminations

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Cat5e

Components Range :

CablesPatch PanelsWall / Floor terminationsPatch cordsBalunsCross connectTools / accessories

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Cables (1)

UnscreenedUTP

Foil screenedFTP

Foil & Braid screenedS-FTP

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Cables (2)

Power Sum 25 Pairs

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Patch Panel (1)Patch Panels - Unscreened

16 Way 1U

24 Way 1U

32 Way 2U

48 Way 2U

110 IDCs or LSA IDCs

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Patch Panel (2)Patch Panels - Screened

16 Way 1U

24 Way 1U

32 Way 2U

110 IDCs or LSA IDCs

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Patch Panel (3)

Telco Patch Panels

24 PortFront View

Rear ViewTelco 4Rear View

Telco 8

RJ21X Sockets

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Connector (1)

110 Connector

LSA Connector

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Connector (2)

5

4

1

2

3

6

7

8

White/Blue

Blue

White/Orange

Orange

White/Green

Green

White/Brown

Brown

5

4

3

6

1

2

7

8

White/Blue

Blue

White/Orange

Orange

White/Green

Green

White/Brown

Brown

EIA/TIA 568A EIA/TIA 568B

Modular Jack Connection

1

2

3

4

5

6

7

8

IDC RearConnector

Position No

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Snap-in Jacks (1)

UMJ Style UTP 110UTP Krone

FTP Krone FTP 110

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Snap-in Jacks (2)

The snap-in jacks are designed to snap into floor and wall outlets compatible with the AMP Keystone standard.

The UMJ is used mostly for the US market where shuttered outletsare not required.

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Wall Outlets (1)

UK style faceplate

Snap-in jackUTP or FTP

Shuttered Module

Blanking Plates

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Wall Outlets (2)

Continental style face plates

Squareedged

Roundededge

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Wall Outlets (3)

Single port

Snap-in jackUTP or FTP

UK style shuttered faceplateDual port

UK style shuttered faceplate

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Wall Outlets (4)

US style face plate

UMJ Jack

Bezel

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Cable Management

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110 Cross ConnectCategory 5

up to 300 pair

wall or rack mounted

use for high density, low cost patching with infrequent changes

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110 Cross Connect…

RJ45jack

Connectingblock

S110jack

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Balun

CoaxBalun

TwinaxBalun

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Balun

Balun (BALanced - UNbalanced)

change from one cable media to another

main job is to convert cable impedance

allows existing co-ax based hardware to communicate via a Cat5e twisted pair cabling system

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System interconnection