Common Measurement Settings
R&S
®
FSVA3000/ R&S
®
FSV3000
360User Manual 1178.8520.02 ─ 01
1 Hz 1 GHz
1 MHz
Figure 8-14: Logarithmic x-axis scaling: the distance between sweep points is variable
In the spectrum from 10 Hz to 100 Hz, the distance is a few Hz. Between 100 MHz and
1 GHz, the distance is several MHz.
Thus, for logarithmic x-axis scaling, the number of sweep points must be sufficiently
high in order to distinguish high frequencies precisely. The resolution bandwidth should
cover at least one sweep point (that means: the distance between two sweep points
should not exceed the RBW). If this condition is not met, signals or interferers could be
missed, especially narrowband interferers.
Insufficient measurement points -
Filter may miss a signal
Resolution filter bandwidth
covers one measurement point
Resolution filter bandwidth covers
several measurement points
8.3.2 Frequency and Span Settings
Access: "Overview" > "Frequency"
For more information see Chapter 8.3.4, "How To Define the Frequency Range",
on page 365.
Frequency and Span Configuration
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