FM Modulation

In this lab, students will generate a frequency modulated signal using a variety of message sources. They will measure the power and bandwidth of this FM signal by viewing the signal in the time and frequency domains, and then calculate the frequency deviation of the modulator circuit.
by Emona Tims

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This is lab 8 of 22 in the course, Communications Principles.


After completing this lab, students will be able to:
  1. Generate a real FM signal using multiple messages.
  2. Examine a real FM signal with scope and compare it to its original message.
  3. Calculate the power in the FM signal.
  4. Describe the bandwidth of an FM signal.
  5. Calculate the frequency deviation of the FM modulator.


  • Basic proficiency using ELVIS III Instruments
  • Basic Circuits Knowledge

Emona Communications Board for NI ELVIS III

Application board for the NI ELVIS III developed to teach introductory digital and analog communications topics using a completely hands-on approach.


Engineering laboratory solution for project-based learning that combines instrumentation and embedded design with a web-driven experience, delivering a greater understanding of engineering fundamentals and system design.

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