Basic Measurement Examples
R&S
®
FSVA/FSV
110Quick Start Guide 1321.3066.02 ─ 06
b) Press the SPAN key and enter 300 kHz.
3. Set the resolution bandwidth to 30 kHz and the video bandwidth to 1 kHz.
a) Press the BW key
b) Press the "Res BW Manual" softkey and enter 30 kHz.
c) Press the "Video BW Manual" softkey and enter 1 kHz.
Note: Larger video bandwidths. The video bandwidth is set to 1 kHz in order
to make the level drop in the center of the two signals clearly visible. At larger
video bandwidths, the video voltage that results from envelope detection is not
sufficiently suppressed. This produces additional voltages, which are visible in
the trace, in the transition area between the two signals.
Figure 7-4: Measurement of two equally-leveled RF sinusoidal signals with the resolu-
tion bandwidth which corresponds to the frequency spacing of the signals
Matching generator and R&S FSVA/FSV frequencies
The level drop is located exactly in the center of the screen only if the genera-
tor frequencies match the frequency display of the R&S FSVA/FSV exactly.
To achieve exact matching, the frequencies of the generators and the
R&S FSVA/FSV must be synchronized.
Measuring Signal Spectra with Multiple Signals
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