The Spectrum Application (RF Measurements)
R&S
®
FPL1000
104
User Manual 1178.3370.02 ─ 09
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.
The RF signal can be distinguished from noise more clearly.
Figure 7-3: RF sine wave signal with low S/N ratio with a smaller video bandwidth
7. By reducing the resolution bandwidth by a factor of 10, the noise is reduced by
10
dB. Set the RBW to
100
kHz
.
Measurements and Results
