Concepts and Features
R&S
®
ZNC
67
User Manual 1173.9557.02 ─ 13
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<reTrace2> first response value of second trace: re<Trace_Name>,
mag<Trace_Name> or db<Trace_Name> for output format Re/Im, lin. Mag-Phase or
dB Mag-Phase, respectively. The data format for export files can be selected in the
Export Data dialog.
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<imTrace2>... second response value of second trace: im<Trace_Name> for output
format Re/Im, ang<Trace_Name> for output formats lin. Mag-Phase or dB Mag-
Phase. The data format for export files can be selected in the Export Data dialog. first
response value of second trace. HZ / KHZ / MHZ / GHZ allowed for imported files.
The analyzer always uses HZ for exported data. second response value of first trace:
im<Trace_Name> for output format Re/Im, ang<Trace_Name> for output 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 Separa-
tor" in the "Export ... Data" dialogs. A semicolon is inserted before the end of each line.
The stimulus values are arranged in ascending order.
3.4.2.3
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 in section "Select Ports".
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.
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Export an arbitrary number of traces, multiple traces with the same parameter or
memory traces.
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Export traces acquired in a power sweep or CW sweep.
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Use export options.
Use a the
Matlab (
*.dat
)
format if you want to import and process the trace data in
Matlab.
3.5 Calibration
Calibration or "system error correction" is the process of eliminating systematic, repro-
ducible errors from the measurement results (S-parameters and derived quantities; see
, on page 17). 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 cali-
bration standard (i.e. its S-parameters if no system errors occur) must be known
Calibration
