Concepts and features
R&S
®
ZNB/ZNBT
152User Manual 1173.9163.02 ─ 62
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When exporting traces to a file, it is recommended to set the analyzer to single
sweep mode (Channel – [Sweep] > "Sweep Control" > "All Channels on Hold").
This mode ensures that a complete sweep is exported.
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The number of decimal places of stimulus and data values in export files is configu-
rable.
4.4.2.1 Touchstone files
The Touchstone file format is a standard for the transfer of frequency-dependent net-
work data. Based on information from Agilent Corporation (the originator of Touch-
stone), formal specifications were produced by the EIA/IBIS Open Forum.
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Touchstone File Format Specification Rev 1.1
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Touchstone File Format Specification Version 2.0
The R&S ZNB/ZNBT supports Touchstone file versions 1.1 and 2.0.
By convention, Touchstone files use file extensions .snp, where n is the number of
network ports. The following displays an s1p export file in "Version 1.1 (ZNx)" format:
# HZ S RI R 50.00
! Rohde & Schwarz Vector Network Analyzer
! Rohde-Schwarz,ZNB8-4Port,1311601044100019,3.20
! Created: UTC 12/24/2020, 5:20:26 PM
! My Comment
! freq[Hz] re:S11 im:S11
1.000000000000000E5 -4.897128641605377E-1 3.767784312367439E-2
4.259950000000000E7 -5.450598597526550E-1 3.608805686235428E-2
...
1
3
4
5
2
6
1
= option line
2 = VNA identification comment
3 = timestamp comment
4 = user-defined comment
5 = network data table header comment
6 = network data table
General syntax rules
Among others, the following general syntax rules apply:
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Touchstone files are ASCII files, 8-bit encoded using ISO/IEC 8859-1:1998. Only
the graphical characters 0x20 to 0x7E, the tab character 0x09, and the three line
termination sequences LF (0x0A), CR+LF (0x0D + 0x0A), and CR (0x0Dh) are
allowed.
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Touchstone files are case-insensitive.
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Blank lines are permitted.
Option line
Each Touchstone file must contain an option line with the following structure:
Operations on traces
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