User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
239User Manual 1178.3370.02 ─ 03
Figure 7-1: Sine wave signal with low S/N ratio
5. To suppress noise spikes, average the trace. In the "Traces" configuration dialog,
set the "Trace Mode" to "Average" (see " Trace Mode " on page 467).
The traces of consecutive sweeps are averaged. To perform averaging, the
R&S FPL1000 automatically switches on the sample detector. The RF signal,
therefore, can be more clearly distinguished from noise.
Figure 7-2: RF sine wave signal with low S/N ratio with an averaged trace
6. Instead of trace averaging, you can select a video filter that is narrower than the
resolution bandwidth. Set the trace mode back to "Clear/ Write" , then set the VBW
to 10
kHz manually in the "Bandwidth" configuration dialog.
Measurements and Results