Getting Started
R&S
®
ZNL/ZNLE
67
User Manual 1178.5966.02 ─ 19
4.3.6.2
Displaying a spectrogram
In addition to the standard "level versus frequency" spectrum display, the R&S
ZNL/
ZNLE also provides a spectrogram display of the measured data. A spectrogram
shows how the spectral density of a signal varies over time. The x-axis shows the fre-
quency, 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.
1. Tap the "Overview" softkey to display the general configuration dialog box.
2. Tap the "Display Config" button.
The SmartGrid mode is activated, and the evaluation bar with the available evalua-
tion methods is displayed.
3.
Drag the "Spectrogram" icon from the evaluation bar to the diagram area. The blue
area indicates that the new diagram would replace the previous spectrum display.
Since we do not want to replace the spectrum, drag the icon to the lower half of the
display to add a window instead.
Figure 4-13: Adding a Spectrogram to the display
Drop the icon.
4. Close the SmartGrid mode by tapping the "Close" icon at the top right corner of the
toolbar.
Trying out the instrument
