R&S FSQ Signal Analyzer - Rohde & Schwarz

R&S FSQ Getting Started
Measuring Signals in the Vicinity of Noise
Fig. 2.11 RF sinewave signal with low S/N ratio if a smaller video bandwidth is selected.
7. By reducing the resolution bandwidth by a factor of 10, the noise is reduced
by 10 dB.
➢ Press the RES BW MANUAL softkey and enter 300 kHz.
The displayed noise is reduced by approx. 10 dB. The signal, therefore,
emerges from noise by about 10 dB. Compared to the previous setting, the
video bandwidth has remained the same, i.e. it has increased relative to the
smaller resolution bandwidth. The averaging effect is, therefore, reduced by
the video bandwidth. The trace will be noisier.
Operating Manual 1313.9681.12 - 01 2.15