You are not changing the carrier signal, only the message. In the scope the center Page 5 of 6 frequency should remain at 14kHz, the frequency span at 20kHz and the dB/div at 15dB. Here are the AM signal in time domain and its frequency spectrum. Explain what you see. (Hint: Remember the Fourier analysis of the square wave performed in Lab #3.)

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20 March, 03:19

You are not changing the carrier signal, only the message. In the scope the center Page 5 of 6 frequency should remain at 14kHz, the frequency span at 20kHz and the dB/div at 15dB. Here are the AM signal in time domain and its frequency spectrum. Explain what you see. (Hint: Remember the Fourier analysis of the square wave performed in Lab #3.)

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Aaden · Answer 1

We will see a waveform displayed on the screen and it will be PWM (pulse width modulation) of sinusoidal wave, this wave should have a frequency of 14KHz and it will form a vibration spectrum.