Balanced Measurements R&S
®
ZVA/ZVB/ZVT
1145.1084.12 9.12 E-4
(*.s4p) Touchstone file.
6. If you wish to define the added network by an equivalent circuit, select the circuit type and
adjust the parameters R, C, and L displayed in the right half of the dialog.
7. If you wish to use a combination of 2-port S-parameters and lumped circuit elements, select the
appropriate Serial 2-Port.. transformation network, import the 2-port files for each of the
physical ports 1 and 3, and adjust the remaining R, C, and L parameters.
8. Click Embed DUT and Close the dialog.
The traces of the active channel show the characteristics of the DUT including the virtual transformation
network inserted between the logical port 1 of the analyzer and the balanced DUT port.
To remove a real transformation network from a balanced port...
Suppose that your DUT has a single-ended and a balanced port and a real, known 4-port
transformation network at the balanced port.
1. Connect the DUT (including the transformation network) to your 3- or 4-port analyzer: Connect
ports 1 and 3 of the analyzer to the outer connectors of the transformation network, connect
port 2 to the single ended port of the DUT.
2. Click Channel – Mode – Port Config... – Balanced and Measured Ports... Predefined Configs
and define the appropriate balanced port configuration (see also Balanced Measurement
Examples), combining ports 1 and 3 of the analyzer to logical port no. 1.
3. Establish the necessary Channel settings (sweep range and type etc.) and select the measured
quantities (Trace – Measure).
4. Click Channel – Mode – Virtual Transform – Balanced Port Deembedding to open the Balanced
Port Deembedding... dialog.
In the dialog, the Logical Port no. 1 (the only balanced port) is already selected. To virtually remove the
physical network, do one of the following:
5. If you wish to describe the network by an imported set of 4-port S-parameters, select the 4-Port
transformation network, click Read Data From File, and load the parameters from a 4-port
(*.s4p) Touchstone file.
6. If you wish to describe the network by an equivalent circuit, select the circuit type and adjust the
parameters R, C, and L displayed in the right half of the dialog.
7. If you wish to use a combination of 2-port S-parameters and lumped circuit elements, select the
appropriate Serial 2-Port.. transformation network, import the 2-port files, and adjust the
remaining R, C, and L parameters.
8. Click Deembed DUT and Close the dialog.
The traces of the active channel show the characteristics of the DUT without the effects of the removed
physical transformation network.
To Next Page
Loading...
