Transmission modes & medias networking

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TRANSMISSION MEDIA

ANDMODES

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Transmission Media

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Classes of transmission media

Transmission Media

Guided (wired) Unguided (wireless)

Twisted-Pair Cable

Co-Axial Cable

Fibre – Optic Cable

Radio waves

Micro waves

Infra red

4

• Twisted – Pair CableTwisted – Pair Cable

• Co – axial CableCo – axial Cable

• Fiber optic CableFiber optic Cable

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GUIDED MEDIA

5

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Twisted – Pair Cable

6

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UTP and STP Cables

7

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UTP Connector

8

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UTP Performance

9

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Co-axial Cable

10

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BNC Connectors – Bayone Neil Concelman

11

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Co-axial Cable Performance

12

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Optical Fiber

13

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Bending of Light ray

14

Propagation Modes

Propagation Modes

Multimode Single Mode

Step -Index

Graded - Index

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Modes

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Contd…

Step index

16

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Fiber Construction

17

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Fiber – Optic cable Connectors

18

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Wireless Transmission

3 kHz 300GHz 400THz 900THz

Radio wave & Micro wave Infrared

20

• 3kHz to 300GHz

• Omni directional

• Travel Long distance

• Applications

• AM & FM radio

• Television

Radio Waves

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• 3kHz to 300GHz

• Unidirectional

• Cannot Penetrate walls

• Applications

• Satellite Networks

• Wireless LAN’s

Micro Waves

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• 300GHz to 400THz

• Short – range communication

• Cannot Penetrate walls

• Applications

• Data transmission

• Remote control

Infrared

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Transmission Modes

Transmission Modes

Serial Mode Parallel Mode

Synchronous

Asynchronous

Isochronous

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Parallel Transmission

25

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Serial Transmission

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Asynchronous Transmission

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Synchronous Transmission

28

• In isochronous transmission we cannot have

uneven gaps between frames.

• Transmission of bits is fixed with equal gaps.

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Isochronous Transmission

29

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