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Applications
R&S
®
RTA4000
193
User Manual 1335.7898.02 ─ 08
Remote command:
Marker
Opens a menu to set up the markers and the peak list. The menu is only available if
"Peak List" is active.
For details, see
Chapter 9.3.3, "Peak list and markers"
Display
Opens a menu to set up the display of the spectrum and the spectrogram.
For details, see
Chapter 9.3.4, "Display settings for spectrum and spectrogram"
9.4.2
Spectrogram
A spectrogram shows how the spectral density of a signal varies over time. The x-axis
shows the frequency, the y-axis shows the time. A third dimension, the power level, is
indicated by different colors. Thus you can see how the strength of the signal varies
over time for different frequencies.
The spectrogram is updated with each data acquisition. The oldest spectrum is on the
top, while the most recent spectrum is the bottom line.
► To use the spectrogram, enable "Spectogram" in the FFT menu.
Figure 9-4: Spectrogram and spectrum windows
Spectrum analysis and spectrogram (option R&S
RTA-K37)