R&S ZNL4 - Page 419

VNA GUI reference
R&S
®
ZNL/ZNLE
419User Manual 1178.5966.02 ─ 20
Lin Mag
Selects a Cartesian diagram with a linear 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, also scaled linearly.
Application: Real measurement data (i.e. the stability factors and the DC voltages)
are always displayed in a Lin Mag diagram.
Tip (alternative formats): The magnitude of each complex quantity can be displayed
on a logarithmic scale. It is possible to view the real and imaginary parts instead of the
magnitude and phase.
Remote command:
CALCulate<Chn>:FORMat 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:
CALCulate<Chn>:FORMat 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:
CALCulate<Chn>:FORMat 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.
Format softtool