Communications Lab 5: Sampling and Reconstruction
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the process of converting analog signals to digital signals called?

  • Pulse Amplitude Modulation
  • Low Pass Filtering
  • Analog to Digital Conversion (correct)
  • Digital to Analog Conversion
  • What is the purpose of the low pass filter in the receiver?

  • To amplify the signal
  • To decode and reconstruct the signal (correct)
  • To sample the signal
  • To encode the signal
  • What is the duration of the sample pulse dependent on?

  • The frequency of the switch control signal
  • The duration of the switch being closed (correct)
  • The amplitude of the message signal
  • The resistance of the switch
  • What is the name of the modulation technique used in this process?

    <p>Pulse Amplitude Modulation (D)</p> Signup and view all the answers

    What is the switch control signal shown as in the figure?

    <p>A pulse train (B)</p> Signup and view all the answers

    What is the output of the switch when it is open?

    <p>Zero volts (A)</p> Signup and view all the answers

    What is the primary reason digital transmission has replaced analog in commercial communications applications?

    <p>Resistance to interference caused by electrical noise (A)</p> Signup and view all the answers

    What is the process of converting an analog signal to digital signal?

    <p>Sampling (B)</p> Signup and view all the answers

    What is the purpose of the digital sampling signal in the figure?

    <p>To tell the sampling circuit when to measure the message (B)</p> Signup and view all the answers

    What is the purpose of the micro-switch under the EX-OR GATE module?

    <p>To switch between the message signal and the sampled signal (B)</p> Signup and view all the answers

    What is the result of 'naturally' sampling the message at the rate set by the sampling signal?

    <p>A changed sample (A)</p> Signup and view all the answers

    What is the frequency of the DIGITAL output from the Master Signals module?

    <p>8.33kHz (C)</p> Signup and view all the answers

    What is the characteristic of digital signals that makes them suitable for transmission in commercial communications applications?

    <p>Resistance to interference caused by electrical noise (A)</p> Signup and view all the answers

    What is the purpose of the electronically controlled switch in the block diagram?

    <p>To connect the message signal to the output (A)</p> Signup and view all the answers

    What is the significance of the 2.08kHz SINE output from the Master Signals module?

    <p>It is the message signal being sampled (D)</p> Signup and view all the answers

    Why is sampling required in digital transmission systems?

    <p>To convert analog signals to digital (A)</p> Signup and view all the answers

    What is the purpose of the oscilloscope in the experiment?

    <p>To observe the message and sampled signals (A)</p> Signup and view all the answers

    What is the role of the MUX module in the experiment?

    <p>To sample the message signal (B)</p> Signup and view all the answers

    More Like This

    Microwave Communication Systems Overview
    24 questions
    Digital Transmission Modes
    13 questions

    Digital Transmission Modes

    WorkablePinkTourmaline avatar
    WorkablePinkTourmaline
    Digital Transmission Systems Quiz
    48 questions
    Use Quizgecko on...
    Browser
    Browser