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R3267 Series Spectrum Analyzer Operation Manual (Vol.1)
2.3.9 Harmonic Distortion Measurements
2-106
6.
Press Stop, 3, 5, 0 and MHz.
The stop frequency is set to 350 MHz.
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.
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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→
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→
Ref.
The reference level is set to the peak of the trace.
To improve measurement accuracy, the level of the fundamental wave is set to the
reference level (See Figure 2-118).
Figure 2-118 Trace of Harmonics
10. Press SRCH.
The normal marker is displayed on the peak of the trace.
Measuring the secondary harmonics
11. Press MKR and Delta Marker.
The delta marker is displayed.
12. Press SRCH and Next peak Right.
The delta marker is moved to the secondary harmonics.
The difference in level between the fundamental wave and secondary harmonics
is displayed in the marker area (See Figure 2-119).