R&S ZVL
GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
253
over the continuous frequency range. In a Cartesian diagram, the x-axis is a linear frequency axis.
•
Log Frequency
is
analogous to
Lin. Frequency,
however, the frequency is swept in equidistant
steps on a logarithmic scale. In a Cartesian diagram, the x-axis is a logarithmic frequency axis.
•
Segmented Frequency
is
analogous to
Lin. Frequency
but uses a sweep range that can be
composed of several continuous frequency ranges or single frequency points defined via Define
Segments.
A valid segment list must be defined before activating
Segment Frequency.
Lin Frequency
In a
Lin. Frequency
sweep the stimulus frequency is swept in equidistant steps over the continuous
frequency range. The frequency range (sweep range) is defined with the Stimulus settings. The step width
between two consecutive sweep points is constant and given by <Span>/(n - 1) where n is the specified
Number of Points (n > 1). The internal generator power can be set, if so desired, in the Power Bandwidth
Average submenu.
A
Lin. Frequency
sweep corresponds to the analysis of a signal over the frequency, as obtained e.g. by
means of a spectrum analyzer. This is the default sweep type. In a Cartesian diagram the measurement
result is displayed as a trace over a linear frequency scale (spectral representation). The following
example shows a
Lin. Frequency
sweep with a stimulus range between 4.5 GHz and 6 GHz, the forward
transmission parameter S12 as measured quantity, and a
dB Mag
scaled y-axis.
Remote control:
[SENSe<Ch>:]SWEep:TPYE LINear
[SENSe<Chn>:]FUNCtion[:ON] "XFRequency:..."
Log Frequency
In a
Log. Frequency
sweep the stimulus frequency is swept on a logarithmic scale over the continuous
frequency range. The frequency range (sweep range) is defined with the Stimulus settings. The sweep
points are calculated from the Span and the specified Number of Points (n > 1) with the condition that the
step width is constant on the logarithmic scale. The internal generator power can be set, if so desired, in
the Power Bandwidth Average submenu.
Log Frequency
sweeps are suitable for the analysis of a DUT over a large frequency range, e.g. over
several octaves. In a Cartesian diagram the measurement result is displayed as a trace over a logarithmic
frequency scale. The following example shows a
Log. Frequency
sweep with a stimulus range between 50
MHz and 6 GHz, the forward transmission parameter S12 as measured quantity, and a
dB Mag
scaled y-
axis
