User`s guide

4-46
Printing, Plotting, and Saving Measurement Results
Saving Measurement Results
Files with .s1 and .s2 File Extensions
There are two type of files with .s1 and .s2 file extensions. There is FileXX.s1 (or .s2) and
DataXX.s1 (or .s2).
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.
DATA ONLY on OFF
SAVE USING ASCII
DATA ONLY ON off
SAVE USING ASCII
FORMAT ARY on OFF
GRAPHICS on OFF