3-28 PN: 10580-00343 Rev. H S820E UG
3-6 Advanced Measurements Cable and Antenna Measurements
Smith Chart
The Smith Chart is a graphical tool for plotting impedance data versus
frequency. It converts the measured reflection coefficient data into impedance
data and displays it in a manner that makes the Smith Chart a useful tool for
determining and tuning input match. This complex impedance plot reveals
which matching elements (capacitance, inductance) are necessary to match a
device under test to the reference impedance (which can be set to either
50 ohms or 75 ohms). Markers can be used to read the real and imaginary
parts of the complex impedance.
1-Port Phase
The S820E can display the phase of the reflection measurements at Port 1.
The Phase display range is from –450 degrees to +450 degrees.
The 1-port phase measurement is most useful when making relative
measurements (comparing the phase of one device to the phase of another) by
utilizing the Trace Math function (Trace – Memory).
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