Concepts and Features
R&S
®
ZNA
132
User Manual 1178.6462.02 ─ 12
formats lin. Mag-Phase or dB Mag-Phase. The data format for export files can be
selected in the Export Data dialog.
The trace data is arranged as described in the header. Different values are separated
by semicolons, commas or other characters, depending on the selected "Decimal Sep-
arator" in the "Export ... Data" dialogs. A semicolon is inserted before the end of each
line.
The stimulus values are arranged in ascending order.
5.4.2.3
Finding the Best File Format
The file format depends on how you want to use the exported data.
Use a
Touchstone
file format to export single-ended S-parameter data traces to a file
that can be evaluated with applications such as Agilent's Microwave Design System
(MDS) and Advanced Design System (ADS), and to convert mixed mode parameters
back to single-ended parameters. The data must be acquired in a frequency sweep.
Note the
"Conditions for Touchstone file export"
Use the
ASCII (*.csv)
format if you want to do one of the following:
●
Import the created file into a spreadsheet application such as Microsoft Excel.
●
Export an arbitrary number of traces, multiple traces with the same parameter or
memory traces.
●
Export traces acquired in a power sweep or CW sweep.
●
Use export options.
Use the
Matlab (
*.dat
)
format if you want to import and process the trace data in
Matlab.
5.5
Calibration
Calibration or system error correction is the process of eliminating systematic, reprodu-
cible errors from the measurement results (S-parameters and derived quantities; see
on page 73). The process involves the following stages:
Calibration or system error correction is the process of eliminating systematic, reprodu-
cible errors from the measurement results (S-parameters and derived quantities). The
process involves the following stages:
1. A set of calibration standards is selected and measured over the required sweep
range.
For many calibration types, the magnitude and phase response of each calibration
standard (i.e. its S-parameters if no system errors occur) must be known within the
entire sweep range. In some calibration procedures (TRL, TNA, TRM), part of the
characteristics of the standards can be auto-determined due to implicit redundancy
(self-calibration).
Calibration
