R&S ZVB - Page 209

R&S
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ZVA / R&S
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ZVB / R&S
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ZVT GUI Reference
Trace Menu
Operating Manual 1145.1084.12 – 30 194
 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 a the Matlab (*.dat) format if you want to import and process the trace data in Matlab.
For more information see Trace File Formats.
Remote control:
MMEMory:STORe:TRACe
MMEMory:STORe:TRACe:CHANnel
Trace File Formats
Trace files are ASCII files with selectable file format. The analyzer provides several types of trace files:
 Touchstone (*.s<n>p) files
 ASCII (*.csv) files
 Matlab (*.dat) files are ASCII files which can be imported and processed in Matlab.
The trace file formats complement each other; see Selecting an appropriate file format.
Touchstone files
All Touchstone files contain a header, a comment section, and the actual trace data:
# HZ S RI R 50.00
! Rohde & Schwarz ZVA8 4Ports - Version 2.79 - 1145.1010k10 SN: 100001
! Date: 2011-03-17 17:29:05
! Measurement: S21
!
3.000000000000000E5 4.974100772242758E-1 -4.765769749721549E-2
4.029850000000000E7 4.993215759551635E-1 -4.876783852224179E-2
8.029700000000000E7 4.947516929605214E-1 -7.533998081687453E-2
...
The header consists of the following data elements:
# specifies beginning of header line (required at top of file). <Frequency unit> HZ / KHZ /
MHZ / GHZ allowed for imported files. The analyzer always uses HZ for exported data.
<Parameter type> Specifies what kind of network parameter data is contained in the file; S
indicates S-parameter data.
<Data format> RI for Re/Im, MA for lin. Mag-Phase, DB for dB Mag-Phase. The data format
for export files can be selected in the Export Data dialog.
R <Reference resistance> specifies the reference resistance as a real, positive number of
ohms. The default reference resistance is 50 ohms.
Comment lines start with the exclamation mark (!) and may contain any text used for documentation of the
trace data file. Any number of comment lines may be inserted before or after the header line. A
Touchstone file created by the network analyzer contains the comment lines shown above: Manufacturer
of the network analyzer, properties of the instrument, current date and time, measured S-parameter(s).