Reflection Measurements R&S
®
ZVA/ZVB/ZVT
1145.1084.12 2.6 E-1
Evaluation of Data
The analyzer provides various tools to optimize the display and analyze the measurement data. For
instance, you can use markers determine the maximum of the reflection coefficient, and change the
display format to obtain information about the phase shift of the reflected wave and the impedance of
your DUT.
1. In the TRACE keypad, press MARKER. This places Marker 1 to its
default position (center of the sweep range).
A marker symbol (triangle) appears on the trace. The stimulus value
(frequency) and response value (magnitude of the reflection coefficient
converted to a dB value) at the marker position is displayed in the
marker info field in the upper right corner of the diagram.
2. Press MARKER FUNCT and activate Min Search.
The marker jumps to the absolute minimum of the curve in the entire
sweep range. The marker info field shows the coordinates of the new
marker position.
3. In the TRACE keypad, press FORMAT and select the Phase of the
reflection coefficient to be displayed.
The phase is shown in a Cartesian diagram with a default vertical scale
of –225 deg to +225 deg. The marker info field shows the frequency
and phase at the marker position.
4. Still in the FORMAT menu, select Smith.
The Smith chart shows lines of constant real and imaginary part of the
impedance in the reflection coefficient plane.
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