Transmission Modes & Media

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2. TRANSMISSION
MEDIA
AND
MODES
12/07/14 Transmission media & modes
2

3. Transmission Media
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4. 12/07/14 Transmission media & modes
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

5. • Twisted – Pair CableTwisted – Pair Cable
• Co – axial CableCo – axial Cable
• Fiber optic CableFiber optic Cable
12/07/14 Transmission media & modes
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
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15. Propagation Modes
Propagation
Modes
Multimode Single Mode
Step
-Index
Graded
- Index
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16. Modes
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Contd…
Step index
16

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Fiber Construction
17

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Fiber – Optic cable Connectors
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Wireless Transmission
3 kHz 300GHz 400THz 900THz
Radio wave & Micro wave Infrared
20

21. • 3kHz to 300GHz
• Omni directional
• Travel Long distance
• Applications
• AM & FM radio
• Television
Radio Waves
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22. • 3kHz to 300GHz
• Unidirectional
• Cannot Penetrate walls
• Applications
• Satellite Networks
• Wireless LAN’s
Micro Waves
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23. • 300GHz to 400THz
• Short – range communication
• Cannot Penetrate walls
• Applications
• Data transmission
• Remote control
Infrared
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24. Transmission Modes
Transmission
Modes
Serial Mode Parallel Mode
Synchro
nous
Asynchr
onous
Isochro
nous
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Parallel Transmission
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Serial Transmission
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Asynchronous Transmission
27

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Synchronous Transmission
28

29. • 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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