1. TRANSMISSION MEDIA COAXIAL CABLE
Presented by:
Aleena MJ( )
Angel Mary( )
Karma Gurung( )

2. Contents What is Transmission Media
Classification of Transmission Media
What is Coaxial Cable
Structure of Coaxial Cable
Categories of Coaxial Cable
Connectors - BNC
Performance of Coaxial Cable
Applications of Coaxial Cable
Questions Covered

3. What is Transmission Media?
Defined as anything that can carry information from a source to a destination.
Transmission media are actually located below the physical layer and are directly controlled by the physical layer. We could say that transmission media belong to layer zero.
In telecommunications, transmission media can be divided into two broad categories: guided and unguided.
Guided media include twisted-pair cable, coaxial cable, and fiber-optic cable.
Unguided medium is free space.

4. Classification of Transmission Media

5. What is Coaxial Cable?
Coaxial cable is a type of shielded and insulated copper cable that is used in computer networks and to deliver cable TV services to end users.
Coaxial cables are categorized by their Radio Government (RG) ratings.
Each RG number denotes a unique set of physical specifications, including the wire gauge of the inner conductor, the thickness and type of the inner insulator, and the size and type of the outer casing.
To connect coaxial cable to devices, we need coaxial connectors.
The most common type of connector used today is the Bayonet Neill-Concelman (BNC) connector.

6. Structure of Coaxial Cable
Coax has a central core conductor of solid or stranded wire (usually copper) enclosed in an insulating sheath, which is, in turn, encased in an outer conductor of metal foil, braid or combination of the two.

7. Categories of Coaxial Cable
Coaxial cables are categorized by their Radio Government(RG) ratings.

8. Connectors - BNC(Bayonet Neill-Concelman)
The BNC connector is used to connect the end of the cable to the device, such as a TV set.
The BNC T connector is used in ethernet networks to branch out a connection to a computer or other device.
The BNC terminator is used at the end of the cable to prevent the reflection of the signal.

9. Performance of Coaxial Cable

10. Applications of Coaxial Cable
Analog telephone networks
Digital telephone networks
Cable TV networks - now mostly used at the network boundaries
Traditional Ethernet LANs - due to high bandwidth
However, coaxial cables have been largely replaced by fibre optic cables in telephone networks and cable TV networks.

11. Questions Covered Define Transmission Media.
Provide the classification of Transmission Media. Explain in detail each one of them. (only coaxial cable - under guided media)
Explain the types of guided and unguided media with suitable diagrams.
(only coaxial cable - under guided media)

12. THANK YOU