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What does the efficiency of the transmission medium depend on (discuss with your partner)?

Do you believe that fiber optic is more efficient than copper cable?

Is the word “media” singular or plural? Write the following words in

singular: data, media, criteria, syllabi, phenomena, crises, analyses, theses.

Text A. Transmission Media

Transmission media are the highways and arteries that provide a path for telecommunications devices. There is a general tendency to say that one transmission medium is better than another. In fact, each transmission medium has its place in the design of any communication system. Each has characteristics which will make it the ideal medium to use based on the particular set of circumstances. It is important to recognize the advantages of each and develop a system accordingly. Factors to consider when choosing the transmission media include: cost, ease of installation and maintenance, availability, and most important, efficiency of transmission. It is important to recognize the advantages of each and develop a system accordingly.

Transmission efficiency is generally viewed as the amount of signal degradation created by the use of a particular transmission medium. The transmission medium presents a "barrier" to the communication signal. The "barrier" can be measured by many different factors. However, one common question is asked about all communication media. How far will the communication signal energy travel before it becomes too weak (or distorted) to be considered unstable? There is equipment available to extend the distance for transmitting a signal, but that adds to the overall cost and complexity of deployment.

2.1 Match the words in column A with their synonyms in column B:

A B

Circumstances difficulty

Degradation conditions

Barrier placement

Distorted attenuation

Deployment obstacle

Complexity weakened

2.2 Translate this sentence into Russian:

Transmission efficiency is generally viewed as the amount of signal degradation created by the use of a particular transmission medium.

2.3 Answer the following questions:

1) What factors should be considered when choosing the transmission media?

2) Why is a transmission medium called a “barrier” to the communication signal?

3) What common question is usually asked about all communication media?

4) How can you explain the term “transmission efficiency”?

<== попередня сторінка	\|	наступна сторінка ==>
Text A. Telecommunications (1)	\|	Unit 3. Communication Systems and Networks

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