Spectrum analysis
R&S
®
RTO6
391User Manual 1801.6687.02 ─ 05
9.2.2 Spectrum analysis functions
In addition to spectrograms, the Spectrum analysis option also provides some new
automatic measurements based on spectrum waveforms.
●
A peak list measurement detects all peaks above a user-definable threshold and
optionally indicates the peaks in the spectrum diagram.
Figure 9-3: Peak list with labels for spectrum waveform
For a description of the measurement settings, see Chapter 8.2.7.2, "Settings for
spectrum measurements", on page 336.
●
The THD measurements are an extension to the basic THD measurement. See
Chapter 8.2.7, "Spectrum measurements",
on page 334 for details.
●
Cursor measurements on spectrum waveforms provide easy center definition and
peak search functions, see Chapter 8.1.1.2, "Cursor measurements on spectrum
waveforms", on page 285.
9.2.3 Configuring spectrograms
Spectrograms are only available if the Spectrum analysis option R&S RTO6-K37 is
activated.
1. Tap the "Spectrogram" icon on the toolbar.
The "Spectrogram" overlay menu opens.
2. Select the source of the spectrogram.
A spectrogram diagram is displayed. A new signal icon for the spectrogram is dis-
played on the signal bar ("SGx").
If the selected source is a channel waveform, an FFT is started, on which the spec-
trogram is created.
Additional settings for time lines become available in the dialog box.
3.
Optionally, to display a time line and thus mark a specific waveform in the spectro-
gram, select "Enable" for one of the two time lines.
Spectrum analysis (option R&S RT
O6-K37)
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