The S-parameter conversion function allows for the conversion of measurement results () to the following parameters:
Parameter |
Equation |
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Impedance in reflection measurement () |
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Admittance in reflection measurement () |
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Impedance in transmission measurement () |
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Admittance in transmission measurement () |
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Inverse S-parameter |
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Equivalent admittance in transmission shunt measurements () |
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Equivalent impedance in transmission shunt measurements () |
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S-parameter complex conjugate |
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is characteristic impedance of Port a. is characteristic impedance of Port b. is measured S-parameter ( and are the port identifiers). , |
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note |
Equations for , , , are approximate. The general method of converting S-parameters to Z, Y, H, T, ABCD-parameters is presented in the General S-Parameter Conversion. The reason for using the approximate method is the measurement speed, as only one S-parameter is used in the calculations, whereas the general method requires measurement of the full matrix of S-parameters. |
The S-parameter conversion function can be applied to an individual trace of a channel. The trace to which the function is applied must be preselected as active (See Selection of Active Trace/Channel).
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To enable/disable the conversion, use the following softkeys: Analysis > Conversion > Conversion |
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To select the conversion type, use the following softkeys: Analysis > Conversion > Function Then select the required function: •Zr: Reflection •Zt: Transmission •Yr: Reflection •Yt: Transmission • 1/S: Inverse • Ztsh: Trans-Shunt •Ytsh: Trans-Shunt •Conjugation |
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note |
All conversion types are indicated in the trace status field, when enabled. |
