GUI reference
R&S
®
ZNA
377
User Manual 1178.6462.02 ─ 20
Properties:
The stimulus variable appears on the horizontal axis, scaled linearly. The
phase of the complex quantity C, i.e. φ (C) = arctan ( Im(C) / Re(C) ), appears on the
vertical axis. φ (C) is measured relative to the phase at the start of the sweep (refer-
ence phase = 0°). In contrast to the normal
format, the display range is not limi-
ted to values between –180° and +180°. This format avoids artificial jumps of the trace
but can entail a relatively wide phase range if the sweep span is large.
Application:
Phase measurements, e.g. phase distortion, deviation from linearity.
Tip:
After changing to the "Unwr Phase" format, use the "Auto Scale Trace" function to
rescale the vertical axis and view the entire trace (see
Remote command:
UPHase
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:
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.
Format softtool
