Measurements
R&S
®
FSW
121User Manual 1173.9411.02 ─ 19
5. To suppress noise spikes, average the trace. In the "Traces" configuration dialog,
set the "Trace mode" to "Average" (see "Trace Mode" on page 465).
The traces of consecutive sweeps are averaged. To perform averaging, the
R&S FSW automatically switches on the sample detector. The RF signal, therefore,
can be more clearly distinguished from noise.
Fig. 5-2: 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.
The RF signal can be distinguished from noise more clearly.
Basic Measurements
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