VNA GUI Reference
R&S
®
ZNL/ZNLE
386
User Manual 1178.5966.02 ─ 07
Remote command:
MLINear
Log Mag
Selects a Cartesian diagram with a logarithmic (base 10) vertical axis scale to display
the magnitude of the measured quantity.
Properties:
The stimulus variable appears on the horizontal axis, scaled linearly. The
magnitude of the complex quantity C, i.e. |C| = sqrt ( Re(C)
2
+ Im(C)
2
), appears on the
vertical axis, scaled logarithmically.
Application:
Impedance measurements
Remote command:
LOGarithmic
Real
Selects a Cartesian diagram to display the real part of a complex measured quantity.
Properties:
The stimulus variable appears on the horizontal axis, scaled linearly. The
real part Re(C) of the complex quantity C = Re(C) + j Im(C), appears on the vertical
axis, also scaled linearly.
Application:
The real part of an impedance corresponds to its resistive portion.
Tip (alternative formats):
It is possible to view the magnitude and phase of a complex
quantity instead of the real and imaginary part. The magnitude can be displayed on a
linear scale or on a logarithmic scale. Both the real and imaginary parts are displayed
in the polar diagram.
Remote command:
REAL
Imag
Selects a Cartesian diagram to display the imaginary part of a complex measured
quantity.
Properties:
The stimulus variable appears on the horizontal axis, scaled linearly. The
imaginary part Im(C) of the complex quantity C = Re(C) + j Im(C), appears on the verti-
cal axis, also scaled linearly.
Application:
The imaginary part of an impedance corresponds to its reactive portion.
Positive (negative) values represent inductive (capacitive) reactance.
Tip (alternative formats):
It is possible to view the magnitude and phase of a complex
quantity instead of the real and imaginary part. The magnitude can be displayed on a
linear scale or on a logarithmic scale. Both the real and imaginary parts are displayed
in the polar diagram.
Remote command:
IMAGinary
Inv Smith
Selects an inverted Smith chart to display a complex quantity, primarily a reflection S-
parameter.
Format Softtool
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Allice Messtechnik GmbH
