User Manual

Trying Out the Instrument
R&S
®
FPL1000
54Getting Started 1323.1602.02 ─ 03
b) Tap the "Frequency" button.
c) In the "Center" field, enter 50 on the number pad on the front panel.
d) Press the "MHz" key next to the number pad.
2. Reduce the span to 20 MHz:
a) In the "Span" field of the "Frequency" dialog box, enter 20
MHz.
b) Close the "Frequency" dialog box.
3. Average the trace to eliminate noise:
a) In the configuration "Overview" , tap the "Analysis" button.
b) In the "Traces" tab, select the trace mode "Average" .
c) Enter the "Average Count" : 100.
d) Close the "Analysis" dialog box.
The display of the calibration signal is now improved. The maximum at the
center frequency (=calibration frequency) of 50 MHz becomes visible.
Figure 5-2: Calibration signal with optimized display settings
5.2 Displaying a Spectrogram
In addition to the standard "level versus frequency" spectrum display, 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.
1. Tap the "Overview" softkey to display the general configuration dialog box.
Displaying a Spectrogram