Measuring Signals in the Vicinity of Noise R&S FSL
1300.2519.12 2.16 E-11
6. 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 of the
video bandwidth is therefore reduced. The trace will be noisier.
Fig. 2-13 Reference signal at a smaller resolution bandwidth
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