Hardware Reference
In-Depth Information
Figure 11.15
Frequency spectrum of a 1 kHz sine wave generated by a
low-distortion signal generator. The instrument is set to capture 4096 samples
per second. Notice how the second harmonic is approximately 70 dB down on
the fundamental. It is also possible to see the third, fifth, and the seventh
harmonic
Figure 11.16
Spectrum analysis of a radio signal at 1184 kHz (1.184 MHz).
The cursors have been adjusted in order to display the amplitude and
frequency of the fundamental and its third harmonic. The third harmonic at
3553 kHz (3.553 MHz) is approximately 21 dB down on the fundamental
