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83 SNA5000A Vector Network Analyzer User Manual
Figure 3-32-port impedance conversion
2-port de-embed operation steps:
1. Ensure that the user has completed the S parameter calibration and obtained the S
parameters of the DUT.
2. Select Cal→Fixtures→Fixture Setup→2-Port DeEmbed to enter the Settings screen.
3. Select the port and select the form of de-embedding to import an S2P File. Click User S2P
File to import the S parameter of the fixture part that needs to be removed.
Checking the Enable De-Embedding On All Ports tab means that all ports are de-
embeddable.
When the frequency range in the S2P file of the imported matching module is smaller than
the frequency range set by the current interface, if the Enable Extrapolation item is not
checked, the system will extrapolate the S2P file by default. All the low-frequency
parameters not covered are replaced by the first point in the S2P file, and all the high-
frequency parameters not covered are replaced by the last point in the S2P file, making the
frequency range of the S2P file the same as that of the current interface.
If you check the Enable Extrapolation tab, the system will interpolate the frequency points
not covered by the S2P so that the frequency range of the S2P file is the same as that of
the current interface.
4. Checking the Reverse Adapter Ports entry represents the part of the reverse connection
that will need to be de-embedding. By default, the system reverses the imported S2P file.
5. Click Close to complete the setting and click Apply Fixtures to ON to take effect.
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