vna tools ii in the lab practical aspects - metas · pdf filefederal department of justice and...
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Federal Department of Justice and Police FDJP
Federal Office of Metrology METAS
VNA Tools II in the lab – practical aspects
European Metrology workshop (iNRiM, Torino) Juerg Ruefenacht
Michael Wollensack 25.- 27. May 2011
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 2
Federal Office of Metrology METAS
VNA Tools II topics
• VNA Data Explorer (data visualisation only)
• The multistep measurement process
• Project examples
• The graphical user interface (GUI)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 3
Federal Office of Metrology METAS
The graphical user interface (GUI)
live demo
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 4
Federal Office of Metrology METAS
The multistep measurement process
Basic influence
parameters with
uncertainties
Multistep measurement process
S-parameter data with uncertainties
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 5
Federal Office of Metrology METAS
Specify: instrument settings (VNA hardware)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 6
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Collect: settings, actions and measurement data
Measurement Journal (time stamps – log file of the complete measurement process)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 7
Federal Office of Metrology METAS
Define: type of calibration (1/3)
Calibration Config (first action: new calibration configuration)
• OnePort
• SOLT
• GSOLT
• QSOLT
• UnkwnownThru
• TRL
• Optimization
Calibration types:
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 8
Federal Office of Metrology METAS
Assign: measurement data – standard definitions (2/3)
Calibration Config
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 9
Federal Office of Metrology METAS
Calculate: Error Terms (3/3)
Calibration Config
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 10
Federal Office of Metrology METAS
Correct: the raw measurement data
Error Correction (Error correction of all data located in the raw measurements path)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 11
Federal Office of Metrology METAS
Visualisation / Comparison / Data Analysis (1/3)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 12
Federal Office of Metrology METAS
Visualisation / Comparison / Data Analysis (2/3)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 13
Federal Office of Metrology METAS
Visualisation / Comparison / Data Analysis (3/3)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 14
Federal Office of Metrology METAS
VNA Tools II project examples
• 1-Port Calibration
• 2-Port Calibration (SOLT vs Unknown Thru)
• 3-Port Calibration (if time is left)
live demo
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 15
Federal Office of Metrology METAS
VNA Data Explorer
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 16
Federal Office of Metrology METAS
Conclusions
• VNA expert application including uncertainty propagation
• High flexibility - Expert Tool
• Allows to directly compare different types of calibration
• Powerful visualisation for data analysis
• Data processing tools (including uncertainty data)
(Math / cascade / merge / mean / circle fit / interpolate…)
© METAS Juerg Ruefenacht + Michael Wollensack European Metrology workshop, Torino 25.-27. May 2011 slide 17
Federal Office of Metrology METAS
Thank you very much for your attention !
Federal Department of Justice and Police FDJP
Federal Office of Metrology METAS