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Questions and Answers
Which equipment is needed to study Amplitude Shift Keying?
Which equipment is needed to study Amplitude Shift Keying?
- Scientech 2156 and Scientech 2157 TechBooks
- 2 mm Banana cable
- Oscilloscope Scientech 803/831, 30 MHz or equivalent
- All of the above (correct)
What is the simplest method of modulating a carrier with a data stream in Amplitude Shift Keying?
What is the simplest method of modulating a carrier with a data stream in Amplitude Shift Keying?
- Frequency modulation
- Phase modulation
- Change in amplitude (correct)
- None of the above
What is another name for Amplitude Shift Keying (ASK)?
What is another name for Amplitude Shift Keying (ASK)?
- Frequency Shift Keying (FSK)
- Phase Shift Keying (PSK)
- On-Off Keying (OOK) (correct)
- None of the above
How is the carrier wave modulated in Amplitude Shift Keying (ASK)?
How is the carrier wave modulated in Amplitude Shift Keying (ASK)?
What does the ASK waveform represent in Amplitude Shift Keying (ASK)?
What does the ASK waveform represent in Amplitude Shift Keying (ASK)?
Which modulation technique is known as Amplitude Shift Keying (ASK)?
Which modulation technique is known as Amplitude Shift Keying (ASK)?
What is the simplest way of achieving amplitude shift keying?
What is the simplest way of achieving amplitude shift keying?
Which equipment is used to generate the ASK waveform in Amplitude Shift Keying?
Which equipment is used to generate the ASK waveform in Amplitude Shift Keying?
What happens to the carrier wave when the data bit is '1' in Amplitude Shift Keying?
What happens to the carrier wave when the data bit is '1' in Amplitude Shift Keying?
What does Figure 12 illustrate in Amplitude Shift Keying?
What does Figure 12 illustrate in Amplitude Shift Keying?
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Study Notes
Amplitude Shift Keying (ASK)
- To study Amplitude Shift Keying, the required equipment includes a signal generator, an oscilloscope, and a pulse generator.
Modulation Technique
- The simplest method of modulating a carrier with a data stream in Amplitude Shift Keying is by varying the amplitude of the carrier wave in accordance with the data signal.
Alternative Name
- Amplitude Shift Keying is also known as On-Off Keying (OOK).
Modulation of Carrier Wave
- In Amplitude Shift Keying, the carrier wave is modulated by varying its amplitude in accordance with the data signal.
ASK Waveform Representation
- The ASK waveform represents the binary data being transmitted.
Modulation Technique
- Amplitude Shift Keying is a type of amplitude modulation technique.
Simplest Way of Achieving ASK
- The simplest way of achieving amplitude shift keying is by switching the carrier on and off in accordance with the binary data.
Generating ASK Waveform
- The ASK waveform can be generated using an oscillator, a switch, and a pulse generator.
Carrier Wave Modulation
- When the data bit is '1', the carrier wave is present, and when the data bit is '0', the carrier wave is absent.
Illustration in Figure 12
- Figure 12 illustrates the ASK waveform in Amplitude Shift Keying.
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