R3267 Series Spectrum Analyzer Operation Manual (Vol.1)
2.3.9 Harmonic Distortion Measurements
2-109
7.
Press COUPLE, VBW AUTO/MNL(MNL), 1, 0, 0 and kHz.
A VBW of 100 kHz is set.
The noise level is now low enough to observe the trace.
Specifying the fundamental wave
8.
Press SRCH.
The normal marker is displayed on the peak of the fundamental wave.
9.
Press MKR
→
→
→
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and Marker
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→
Ref.
The reference level is set to the peak of the trace.
To improve measurement accuracy, set the level of the fundamental wave to the
reference level (See Figure 2-122).
Figure 2-122 Trace of Harmonics
10. Press MEAS, Peak List and Peak List Freq.
Changes to the split screen display. The peak list is displayed on the lower part
of the screen and the spectrum is displayed on the upper part of the screen.
11. Press MKR and Delta Marker.
The list which shows frequency and level differences between the fundamental
wave and the secondary/tertiary harmonics is shown (See Figure 2-123).
