China Electronics Technology Instruments AV3672 Series, User Manual

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3 Introduction to Use
3.6. Data output
81
c) [Linear format] radio box
Save the trace data in the linear amplitude format.
d) [Real part format] radio box
Save the trace data in the real part format.
e) [Imaginary part format] radio box
Save the trace data in the imaginary part format.
[Formatted data] button
Save the trace data in the format set in the [Saving format] zone.
[Unformatted] button
Save the trace data in the real/imaginary part format.
2) snp (s1p and s2p) file
The “snp” file is a kind of data output file. It can be recalled by the CAE (computer aided engineering) software
(such as ADS of Agilent), but cannot be recalled by the analyzer. The “s1p” file is used to save the characteristics
of single-port devices, only including one S parameter (S
11
or S
22
). The “s2p” file is used to save the characteristics
of double-port devices, including four S parameters. If the full double-port correction is started, four S parameters
will be saved in the “s2p” file. If the full double-port correction is shut down, measurement data will be saved in
the “s2p” file as much as possible. Example: if the full double-port correction is shut down, the current active trace
is S11, but S21 is still measured in the channel, measurement results of S
11
and S
21
will be saved in the “s2p” file.
As no effective measurement data of S
22
and S
12
are provided, the corresponding data in the “s2p” file are 0.
The “snp” file is saved by the following method:
a) Menu path: [File] > [Save] > [Save as...] . The [Save as] dialog box will appear.
b) Set the saving type as the data file (*.s1p or *.s2p) in the [Save as type] box.
c) Set the saving directory in the [Save in] box and [File list] box.
d) Set the file name in the [File name] box.
e) Click [Save ] to save data.
3) prn file
The prn file is used to save the measurement data of the active trace in lines and rows. Each line corresponds to one
measurement point. The first row corresponds to the stimulus value, while the second row corresponds to the
response value. The rows are separated by the comma (,). The format is as follows:
S
11
LogMag
LIN_SWEEP (Hz), LOG_FORMAT (dB)
3.005, -9.000
7.008, -3.219671e-001
1.009, -6.000
2.009, -1.000
3.009, -1.001
The “prn” file is saved in the following method:
Menu path: [File] > [Save] > [Save as...]. The [Save as...] dialog box will appear.
Set the saving type as the list file (*.prn) in the [Saving type] box.
Set the saving directory in the [Save in] box and [File list] box.