GUI reference
R&S
®
ZNA
377User Manual 1178.6462.02 ─ 29
Note: By default a linear frequency sweep is used for calculating the measurement fre-
quencies. If a logarithmic frequency sweep is desired, select this sweep type in the
Noise figure setup dialog before using "Quickset".
DUT Settings
The controls in the "DUT Settings" section allow you to enter approximate information
on the DUT.
The specified "Gain" is used to calculate suitable power levels for measurement and
calibration. To ensure linearity of the complete measurement chain (including the VNA
receivers), set it to the maximum gain of the DUT.
The specified "NF" is used to calculate the intended trace noise in the Result Settings.
Set the "Input Power" to a value in the linear region of the DUT. A good starting point is
approximately 10 dB below the 0.1 dB input compression point of the DUT.
Remote command:
[SENSe<Ch>:]NFIGure:QSET:DUT:GAIN
[SENSe<Ch>:]NFIGure:QSET:DUT:ENFigure
[SENSe<Ch>:]NFIGure:QSET:DUT:POWer
Result Settings
In the "Result Settings" section, you can specify the trace noise of the NF measure-
ment trace. Select a predefined value or enter a custom trace noise. The proposed
value is based on the previously specified DUT Settings.
Furthermore, the "Result Settings" section displays the required measurement time to
achieve the user selected (or entered) trace noise for the NF measurement trace. This
information is calculated based on the selected Meas Settings and the VNA character-
istics. If the current configuration of the VNA can be optimized to achieve faster mea-
surement times, the required steps for optimization are shown in the info box.
The recommended setup considers the achievable measurement time and the effort to
reconfigure the R&S ZNA. The intention of the algorithm is to recommend a reasonably
fast measurement, with minimum effort in terms of changing the Direct generator/
receiver access and/or Direct source monitor access jumpering. Changing the jumper
configuration can be advantageous for low source power levels (direct source monitor
access at driving port), or to improve the receiver noise figure (Reverse Coupler Con-
figuration at receiving port).
More Information opens an overview of the measurement times for all possible VNA
configurations.
Remote command:
[SENSe<Ch>:]NFIGure:QSET:TNOise
Meas softtool
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