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Questions and Answers
What is the primary function of a device used to convert an information signal to a signal compatible with the transmission medium?
What is the primary function of a device used to convert an information signal to a signal compatible with the transmission medium?
Which set of media types includes the three most commonly used for communication?
Which set of media types includes the three most commonly used for communication?
Which term describes unwanted interference added to a signal during transmission?
Which term describes unwanted interference added to a signal during transmission?
What is a transceiver primarily used for in communication systems?
What is a transceiver primarily used for in communication systems?
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Which of the following is NOT a common source of interference in communication?
Which of the following is NOT a common source of interference in communication?
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Study Notes
Electronic Communication
- Began in the 19th century.
Elements of Communication System
- Four main elements:
- Information Source: Originates the message.
- Transmitter: Converts message into a signal.
- Communication Medium: Pathway for the signal transmission.
- Receiver: Converts the signal back into the original message.
- Diagram illustrating relationship: Information Source → Transmitter → Communication Medium → Receiver.
Types of Media Used for Communication
- Five types of media include:
- Wired: Cables like coaxial and fiber optics.
- Wireless: Radio waves, microwaves.
- Optical: Light-based methods.
- Satellite: Uses satellites for transmission.
- Internet: Digital transmission through various protocols.
- Three most commonly used: Wired, Wireless, Internet.
Signal Conversion Device
- The device used to convert an information signal to a compatible signal is called a modem (modulator-demodulator).
Signal Recovery Equipment
- Demodulator: Acquires a signal from a communication medium and recovers the original information signal.
Transceiver Definition
- A transceiver is a device that can both transmit and receive signals.
Effects of Communication Medium on Signal
- Two ways a communication medium can affect a signal:
- Attenuation: Reduction in signal strength over distance.
- Distortion: Alteration in the signal waveform as it travels.
Alternative Name for Communication Medium
- Another name for a communication medium is transmission medium.
Undesirable Interference
- Undesirable interference added to a transmitted signal is referred to as noise.
Common Sources of Interference
- Three common sources of interference include:
- Electromagnetic Interference (EMI): Caused by electrical devices.
- Radio Frequency Interference (RFI): Caused by radio signals.
- Crosstalk: Interference from adjacent communication lines.
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Description
Explore the basics of electronic communication in this quiz. Learn about the elements of the communication system, various types of media used, and the role of signal conversion devices such as modems. Test your understanding of how messages are transmitted and received in modern communication.
