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Spectrum analysis
R&S
®
MXO 4 Series
228User Manual 1335.5337.02 ─ 05
t[s]
Gate
Gate position
Gate length
f[Hz]
FFT
Center frequency
Frequency span
Restricting the result range
You can restrict the results of the spectrum analysis to a specified frequency range.
The frequency range can be defined in two ways:
●
Define a center frequency and frequency span
●
Define start and stop frequencies
Dependencies between spectrum parameters
Spectrum analysis in the R&S MXO 4 is highly configurable. Several parameters,
including the resolution bandwidth, frequency span and center frequency, can be
defined according to your requirements. Note, however, that several parameters are
correlated and not all can be configured independently of the others.
The resolution bandwidth defines the minimum frequency separation at which the
individual components of a spectrum can be distinguished. Small values result in high
precision, as the distance between two distinguishable frequencies is small. Higher val-
ues decrease the precision, but increase measurement speed.
The minimum achievable RBW depends on the integration time which is equivalent to
the number of samples available for calculation. If a higher spectral resolution is
Fundamentals of spectrum analysis
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