R&S ZVB - Page 211

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 – 30 196
In general, an ASCII trace file consists of an optional comment block, a mandatory header line and a data
block. In addition it may contain any number of blank lines. Together header line and data block form a
data table, whose columns are separated by a particular character.
Comments are limited to the beginning of the file. A comment line must start with a # character.
During export, if Add Ref. Impedances is checked in the Export Complex Data dialog, the reference
impedances are written to the comment section. During import, comment lines are ignored.
The header line describes the traces contained in the file.
Header format
The header takes on the form
<Stimulus Descriptor><Separator><Trace Descriptor 1><Separator>[<Trace
Descriptor 2><Separator>[...]]
where
 <Stimulus Descriptor> defines the common sweep type, optionally followed by the stimulus
unit enclosed in brackets:
 freq[Hz] for frequency sweep
 power[dBm] for power sweep
 time[s] for time sweep
 trigger for CW mode sweep
 imbalanced_amplitude_sweep[dB] for amplitude imbalance sweeps
 imbalanced_phase_sweep[°] for phase imbalance sweeps
Export Complex Data uses the default stimulus units shown above, Import Complex Data also
accepts kHz, MHz and GHz for freq and ms for time. A missing, unknown or misspelled
stimulus unit will be silently replaced by the default one.
 <Separator> is the character separating the columns of the header and data table (the Field
Separator in the Export Complex Data dialog).
The same separator char must be used throughout the header and data block; it can either be a
comma, tab, space or semicolon (as in the example above) and must be different from the
decimal separator that is used in the data block (the Decimal Separator in the Export Complex
Data dialog).
 <Trace Descriptor i> describes trace i and takes on the form
<Coordinate 1>:<Trace Name>_<Measured Quantity><Separator><Coordinate
2>:<Trace Name>_<Measured Quantity>
where
 <Coordinate 1> and <Coordinate 2> define the representation of the related trace's