Transmission Media - (7)

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Transmission Media - 7



Summary on What we have studied on last tutorial :-

  • Single Mode : A type of cable that has only single strand of glass fiber with a thin diameter. This is a 9/125 micrometer fiber cable. The diameter of a core glass is approximately 9 micrometer.
  • Multi mode :  A type of cable that contains a glass fiber with a larger diameter. Multiple modes of light signals can be propagated through it. This is 62.5/125 micrometer fiber cable.
  • A connector is a mechanical device that is attached to the fiber optic cable or the light source.
  • Straight tip ( ST) : It was developed by AT&T. A popular connector used with the fiber optic cables and used in Gigabit Ethernet or backbone. Joins individual fibers to optical devices.
  • Sub Miniature Type A (SMA) : Defines a connector that uses two individual connectors for each fiber strand.
  • Subscriber/Standard Connector (SC) : A type of low-cost connector used in 100 Base-FX fiber optic networks and it can be pushed into the device and can be removed by pulling out.


(4) Media Comparison :-


      Different types of medium are used for communication purpose. The characteristics of each medium are given in the table below :
Comparison of various Guided Medium
Comparison of various Guided Medium


(5) Cabling Standards :-


      Electronics Industries Associates/Telecommunications Industry Association (EIA/TIA) T568A and T568B are the common wiring standards which meet this requirements and used to prepare a cable. Only the second and third pairs of T568A and T568B are used. The EIA/TIA T568A and T568B wiring standards are shown in the table below :

      T568A puts two (orange) on pins 3 and 6 and pair three (green) on pins 1 and 2. T568B puts pair two (orange) on pins 1 and 2 and pair three (green) on pins 3 and 6.


Note :-


      Maximum length of cable used is 100 meter from a hub to node.



(5.1) Patch cable and Crossover cable :-


      Patch cable and crossover cable can be differentiated on the basis of color coding.
  • Patch Cable : It is used to connect dissimilar devices e.g. PC to Switches. It is a short cables which has connectors on either ends. They are made of stranded wires which makes them flexible. It connects one piece of equipment to another directly. Patch cable is shown in figure below :
    Patch cable
    Patch cable

  • Crossover cables : Connect similar type of devices, for example, PC to PC or Switch to Switch. The crossover cable connects the transmitter PC to receiver PC. If one end is wired using the T568A standard and other end using the T568B standard thenm it is a cross over cable. The crossover cable is shown in the figure below : 
    Crossover cable
    Crossover cable








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Thanks for reading !
Have a GOOD Day !

Comments

  1. sajal bera03 March, 2017

    Yup This is small post, but It is the last part of transmission media ...!

    ReplyDelete
  2. sajal bera03 March, 2017

    I am waiting for Pdf of this Tutorial...great Tutorial...!

    ReplyDelete
  3. Unknown03 March, 2017

    I will remember it for rest of my life...

    ReplyDelete
  4. Unknown04 March, 2017

    Nice tutorial

    ReplyDelete

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