The Spectrum Application (RF Measurements)
R&S
®
FPL1000
398
User Manual 1178.3370.02 ─ 09
3. For "Average" trace mode, define the number of sweeps to be averaged in the
"Count:" field.
4. If linear scaling is used, select the "Average Mode": "Linear".
5. To improve the trace stability, increase the number of "Sweep Points" or the
"Sweep Time" (in the "Sweep" settings).
All configured traces (not set to "Blank") are displayed after the next sweep.
How to Copy Traces
1. A trace copy function is provided in a separate tab of the "Traces" dialog box. To
display this tab do one of the following:
● Select the [TRACE] key and then the "Trace Copy" softkey.
● Select "Analysis" from the "Overview", then select the "Trace Copy" tab.
2. Select the "Source" trace to be copied.
3. Select the "Copy to Trace" button for the trace to which the settings are to be
applied.
The settings from the source trace are applied to the destination trace. The newly
configured trace (if not set to "Blank") is displayed after the next sweep.
7.10.2
Spectrograms
7.10.2.1
Working with Spectrograms
In addition to the standard "level versus frequency" or "level versus time" traces, the
R&S
FPL1000 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 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.
Three-dimensional spectrograms are also available and are described in
on page 402. Most basic information described in the fol-
lowing sections applies similarly to both two- and three-dimensional spectrograms.
Trace Configuration
