Basic Measurement Examples
R&S
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ESR
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Getting Started 1316.3749.02 ─ 09
Figure 7-2: Measuring the harmonic suppression of the internal reference generator.
Delta markers D2 [1] and D3 [1] show the offset of the first and second harmonics
from the fundamental.
Reducing Noise
The signal analyzer offers three methods to differentiate the harmonics of a signal
from the noise effectively:
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Reducing the video bandwidth
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Averaging the trace
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Reducing the resolution bandwidth
Reducing the video bandwidth and averaging the traces cause the noise from the
analyzer or the DUT to be reduced, depending on which component is larger.
Both averaging methods reduce the measurement uncertainty, particularly in the
case of small signal-to-noise ratios, because the measurement signal is also sep-
arated from the noise.
Measuring Harmonics of Sinusoidal Signals