The graphical display should show the generated 2 kHz, 25% duty cycle symmetric
PWM waveform. The period of a 2 kHz signal is 500 μs. You can confirm this by
measuring the period of the waveform using the graph (you may want to enlarge the
graph window using the mouse). The measurement is best done with the mouse. The
lower left-hand corner of the graph window will display the X and Y-axis values.
Subtract the X-axis values taken over a complete waveform period (you can use the PC
calculator program found in Microsoft Windows to do this).