R&S FSH
Digital Modulation Analyzer
General Result Displays of the Digital Modulation Analyzer
Operating Manual 1173.6275.12 - 30
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9.2 General Result Displays of the Digital Modulation
Analyzer
The R&S FSH provides several result displays that are available for all digital
modulation options.
There are two methods to view and analyze the spectrum of the signal you are
currently measuring: the spectrum overview and the isotropic antenna result displays.
Both result displays are integrated into the digital modulation options, so you do not
have to switch modes if you want to have a quick glance at the spectrum. For a
detailed analysis of the signal, however, you should still use the spectrum analyzer
operating mode.
The screen layout and contents of the spectrum result displays are the same as those
of the spectrum analyzer mode.
The Spectrum Overview
The Spectrum Overview provides an overview of the frequency spectrum with limited
functionality.
The Spectrum Overview is meant for
fast measurements that give you a
rough idea about the signal's
frequency and level characteristics. To
maintain high measurement speed, the
R&S FSH analyzes one FFT and
shows the results of the signal and its
surrounding frequencies. Thus, you
should use this result display for
situations when measurement speed is
an issue, not accuracy.
In addition to the "RF Channel Power" and the "Power Within Span" results, the
Spectrum Overview shows the Occupied Bandwidth. The channel bandwidth depends
on the selected mobile standard.
While using the spectrum overview, you can only set the resolution bandwidth and the
span.
► Press the "Result Display" softkey.
► Select the "Spectrum Overview" menu item.
Note that the Spectrum Overview also features miscellaneous trace modes to display
different aspects of the measurement results. For more information see "
