R3131 Spectrum Analyzer Operation Manual
2.3 Measurement Examples
2-80 Apr 10/98
12. Change the reference level so that you can easily observe the trace by pressing
Ref Level as needed.
13. Press PK SRCH.
The marker is displayed on the peak of the higher harmonic wave. The level dis-
played in the marker area is recorded as the higher harmonic wave level. The har-
monic distortion is the difference between the higher harmonic wave and the
fundamental wave levels.
Figure 2-76 Measuring the Harmonic Distortion
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