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SIGLENT
3.5.2 Meas
Select S11 or S21 as the current measurement item. This value is also displayed in the status bar on
the left side of the screen.
3.5.3 Format
Set the display type of measurement result, enter “Format” submenu, and select the corresponding
display type. This value is also displayed in the status bar on the left side of the screen.
1. Log Mag
The trace represents the logarithmic magnitude of the measurement result, unit: dB.
2. Phase
The trace represents the phase of the measurement result, displayed in range from -180 ° to +180 °, as
well as the expanded phase, can be displayed above +180 ° and below -180 °. Unit: degrees (°).
3. Group Delay
The trace represents the transmission delay of the signal through the DUT. Unit: seconds (s).
4. Smith
The Smith chart format is used to display impedances based on the reflection measurement data of the
DUT. In this format, traces are plotted at the same spots as in the polar format. The Smith chart format
allows users to select one of the following five data groups for displaying the marker response values.
● Lin/Phase: Linear magnitude(Unit) and phase (°)
● Log/Phase: Log magnitude(dB) and phase (°)
● Real/Imag: Real(Unit) and imaginary(Unit) parts of the complex s parameter
● R+jX: Resistance (ohm), Reactance (ohm), and inductance (H) or capacitance (F)
In the upper semicircle, the impedance is inductive, and the reactance corresponds to the
inductance (H)
that is
In the lower semicircle, the impedance is capacitive, and the reactance corresponds to the
capacitance (F)
that is C
● G+jB: Conductance (S), susceptance (S), and capacitance (F) or inductance (H)
In the upper semicircle, the admittance is inductive, and the susceptance corresponds to the
inductance.
that is
In the lower semicircle, the admittance is capacitive, and the susceptance corresponds to the
capacitance.
that is C
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