R&S ZNB Series User Manual page 247

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R&S ZNB/ZNBT
4.7.6 Frequency resolution 1 mHz
Option R&S ZNB/ZNBT-K19
This software option improves the frequency resolution of a R&S ZNB/ZNBT to 1 mHz.
4.7.7 Measurement uncertainty analysis
Option R&S ZNB-K50/R&S ZNB-K50P
Measurement uncertainty analysis is available if option R&S ZNB-K50 and METAS
VNA Tools (version 2.2.6 or higher) are installed on the instrument.
Option R&S ZNB-K50P offers the same functionality as option R&S ZNB-K50, but
comes with METAS VNA Tools preinstalled. It can be shipped with new instruments or
installed at Rohde&Schwarz service.
The purpose of the METAS VNA Tools software is to compute uncertainties of S-
parameter measurements. After registration, you can download it from the VNA Tools
Internet site (https://www.metas.ch/vnatools).
●
The uncertainty analysis of the METAS VNA Tools is limited to S-parameter mea-
surements. Uncertainty analysis of wave quantities is not supported.
●
The uncertainty calculations are in line with EURAMET Calibration Guide No. 12
Version 3.0 (03/2018).
●
For the R&S ZNBT, the "Measurement Uncertainty Analysis" option is not availa-
ble.
●
If
ported.
METAS Calibration
The VNA firmware directly interacts with the DLLs of the METAS VNA Tools. During a
"METAS Calibration", the VNA firmware collects all data that are required to set up a
METAS VNA Tools project. After the "METAS
ted, the analyzer is ready for real-time uncertainty analysis: after each sweep it passes
the raw (uncalibrated) S-parameters to the VNA tools and receives the calibrated S-
parameters plus uncertainties (95% confidence ellipse in the complex plane) in return.
The calibrated S-parameter traces plus their uncertainty bands can be displayed in
magnitude, phase, real and imaginary
complex diagrams (polar, Smith) is not supported.
User Manual 1173.9163.02 ─ 62
external switch matrices
Optional extensions and accessories
are used, measurement uncertainty analysis is not sup-
Calibration"METAS calibration
trace formats. The display of uncertainties in
Concepts and features
is comple-
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