Touchstone File Data Format; File Types Of Touchstone Files; Data Structure In Touchstone File - Agilent Technologies E5071C Manual

E5071C
You can also save trace data of a E5071C active channel to a Touchstone
format file, based on 1- to 4-port models.

Touchstone file data format

You can save data in "log magnitude - angle", "linear magnitude - angle",
or "real number - imaginary number."
When AUTO is selected, the data format is automatically set according to
the display format of the active trace. However, when the display format of
the active trace is set to one other than log magnitude format (LogMag),
linear magnitude format (LinMag), or real-imaginary number format
(Real/Imag), the data format is automatically set to real-imaginary
number.
You can use data saved in Touchstone format for a circuit simulator such
as Agilent Advanced Design System (ADS) on your PC (personal computer)
or workstation. For more information on the ADS, refer to the operation
manual that comes with the system.
to the E5071C the s2p (2-port Touchstone file) file type used to
save user-defined matching circuit information. However, no
other type of file saved in Touchstone format can be recalled to
the E5071C.
the touchstone format file has to be the same impedance value
(real) to every measurement port.
complex port impedance conversion, or when setting different
port impedance at each port. However, the touchstone file is
valid only when the same impedance value (real) to every
measurement port is used.
When you recall the file saved with above condition, the file is
recalled as single normalized reference Z
and it provides in-consistency result.

File types of Touchstone files

File types of the E5071C Touchstone files are s1p, s2p, s3p, and s4p. The
file type indicates the number of ports of the data structure that is output
to the Touchstone file.

Data structure in Touchstone file

Data structure of the Touchstone file consists of a header part and a data
part. The contents of the file is text data, which is ready to be read with a
general text editor.
The header part consists of the comment line and option line.
354
The fixture simulator function enables you to recall
The port reference impedance value when outputs
You can output the measurement result when using
defined at option line,
0