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34. Vary the Variable DCV module's DC Voltage control left and right to model the FM signal's continuously changing frequency. 35. As you perform the step above, compare the outputs from the Twin Pulse Generator module (the ZCD) and the Baseband LPF.

34. Vary the Variable DCV module's DC Voltage control left and right to model the FM signal's continuously changing frequency. 35. As you perform the step above, compare the outputs from the Twin Pulse Generator module (the ZCD) and the Baseband LPF.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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I need help with these questions its from Communication systems Lab no.11 (FM demodulation)

34. Vary the Variable DCV module's DC Voltage control left and right to model the FM signal's continuously changing frequency. As you perform the step above, compare the outputs from the Twin Pulse Generator module (the ZCD) and the Baseband LPF. 35. Tip: You may find it helpful to set the scope's Channel 2 Vertical Attenuation control to 0.5V/div setting. Question 7 If the original message is a sinewave instead of a variable DC voltage, what would you expect to see out of the Baseband LPF? Ask the instructor to check your work before continuing.
Transcribed Image Text:34. Vary the Variable DCV module's DC Voltage control left and right to model the FM signal's continuously changing frequency. As you perform the step above, compare the outputs from the Twin Pulse Generator module (the ZCD) and the Baseband LPF. 35. Tip: You may find it helpful to set the scope's Channel 2 Vertical Attenuation control to 0.5V/div setting. Question 7 If the original message is a sinewave instead of a variable DC voltage, what would you expect to see out of the Baseband LPF? Ask the instructor to check your work before continuing.
Vary the Variable DCV module's DC Voltage control left and right to model the FM signal's continuously changing frequency. 31. Tip: Do this slowly to avoid confusing the scope's triggering circuitry. As you perform the step above, compare the outputs from the Comparator and the Twin Pulse Generator module (the ZCD). 32. Question 4 What type of waveform does the ZCD output? Question 5 As the FM signal changes frequency so does the ZCD's output. What aspect of the signal changes to achieve this? O Neither the signal's mark nor space O Only the signal's mark O Only the signal's space O Both the signal's mark and space Question 6 What does this tell us about the DC component of the comparator's output?
Transcribed Image Text:Vary the Variable DCV module's DC Voltage control left and right to model the FM signal's continuously changing frequency. 31. Tip: Do this slowly to avoid confusing the scope's triggering circuitry. As you perform the step above, compare the outputs from the Comparator and the Twin Pulse Generator module (the ZCD). 32. Question 4 What type of waveform does the ZCD output? Question 5 As the FM signal changes frequency so does the ZCD's output. What aspect of the signal changes to achieve this? O Neither the signal's mark nor space O Only the signal's mark O Only the signal's space O Both the signal's mark and space Question 6 What does this tell us about the DC component of the comparator's output?
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