Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 425 / 813

R&S
®
ZVA/ZVB/ZVT System Menu
1145.1084.12 4.263 E-6
The measurement comprises the following stages:
1.
Select the test setup
Choose the single-ended or balanced ports of the analyzer according to the port configuration
of your DUT and connect the DUT to the selected analyzer ports. This dialog corresponds to
the
Predefined Configs tab of the Balanced and Measured Ports dialog.
The default test setup corresponds to a standard 2-port S-parameter measurement. You
do not need to select another test setup unless you want to measure multiport parameters or
apply a balance-unbalance conversion in order to obtain mixed mode parameters.
2. Define port impedances
Assign reference impedances to all physical and balanced test ports selected in the previous
step. The reference impedances can be complex.
The values for balanced ports are by pressing the buttons in a table of the following shape:
The buttons open the Reference Impedance of Physical Port dialog.
The values for balanced ports are by pressing the buttons in a table of the following shape:
The buttons open the Reference Impedance of Logical Port dialog.
The default reference impedance of the physical analyzer ports is Z
0
= 50 . The default
reference impedances for balanced ports are derived hereof. You do not need to change these
value unless you want to renormalize the port impedances; see
Reference Impedances .
3. Select the measurement parameters and the diagram areas
Choose an S-parameter or a group of S-parameters to be measured and displayed. The
measurement parameters are displayed in separate diagram areas: Cartesian diagram areas
are used for transmission S-parameters, Cartesian or Smith diagrams for reflection parameters.
The selections to be made depend on the test setup selected in the previous stage.
In case of an error in a previous stage, you can always use the Back button and correct
your settings.
4. Select the sweep settings
Choose the frequency range and the number of measurement points per sweep. The sweep
range is defined by two values (start and stop frequency or center frequency and span). The
measurement points are equidistant across the sweep range. Increasing the number of points
also increases the measurement time per single sweep.