Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 297 / 813

R&S
®
ZVA/ZVB/ZVT Channel Menu
1145.1084.12 4.135 E-6
Remote control: [SENSe<Ch>:]SWEep:TPYE LINear
[SENSe<Ch/Tr>:]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
Remote control: [SENSe<Ch>:]SWEep:TPYE LOGarithmic
[SENSe<Ch/Tr>:]FUNCtion[:ON] "XFRequency:..."
Segmented Frequency
In a Segmented Frequency sweep the sweep range can be composed of several continuous, non-
overlapping frequency sub-ranges or single frequency points. The sub-ranges are termed sweep