4-46
Printing, Plotting, and Saving Measurement Results
Saving Measurement Results
With Turned Off
FileXX.s1 is an ASCII file in Touchstone S2P format. Basically, this is a file in real/imaginary spreadsheet
type format with five columns: frequency in the first column, S11 in the second column, S21 in the third, S12
in the fourth, and S22 in the fifth column. If Channel 2 is active, the same type of file is produced but the file
extension is .s2. If dual display is on, both .s1 and .s2 are produced. These Touchstone S2P files are only
produced when a full 2-port calibration is active and
is selected. The effects of port
extensions and electrical delay, if they are turned on, are included in the data.
With Turned On
DataXX.s1 is also an ASCII file in Touchstone S2P format. As with FileXX.s1, DataXX.s1 is a five-column
real/imaginary spreadsheet type format where the columns are used the same as FileXX.s1. If Channel 2 is
active, the same type of file is produced but the file extension is .s2. If dual display is on, both .s1 and .s2 are
produced. These Touchstone S2P files are only produced when a full 2-port calibration is active and
is selected. The effects of port extensions and electrical delay, if they are turned
on, are included in the data.
Files with .f1 and .f2 File Extensions
FileXX.f1, produced only when is turned ON, may be either binary or ASCII. This
file contains the formatted data in whichever format is currently displayed on the network analyzer (dB,
phase, VSWR, and so forth) with error correction, trace math, port extensions, electrical delay, time domain
gating and smoothing applied. Port extensions are really only evident if the measured parameter is phase.
The same type of file is produced for Channel 2, but the file extension is .f2. If dual display is on, both .f1 and
.f2 are produced. In ASCII format, the data appears as two columns (CITIfile format). If the currently selected
display format is not complex data (neither Smith Chart nor Polar), the second column will be meaningless
(place holder) values.
Files with .g0 File Extension
FileXX.g0, produced only when is turned ON, is a binary file containing the active
measurement trace and display graticule. The contents of this file are not meant to be read in an external
computer, so this file is only of use in the instrument.
Binary Files
The size of the data files is very small, about one tenth the size compared to the ASCII format. Binary is the
format to use when you want to store and recall instrument states on the analyzer quickly, but do not need
to read the data in an external computer.
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