Agilent Technologies ENA Series User Manual page 368

Data Output
Saving Trace Data to a File
Table 10-3 Header of s4p
!Agilent Technologies,E5071B,<ID>,<FW Revision>
!Date <Date>
!Data & Calibration Information
!Freq Sww:Method(Stat) Sxw:Method(Stat) Syw:Method(Stat) Szw:Method(Stat)
# Hz S FMT R Z0
Each item has the following meaning.
Sww to Szz
Stat
FMT
Z0
The structure of the data part depends on the combination of the selected file type and
specified port.
NOTE When the S parameter of a port on which calibration is not performed is specified, if data
measured with the S parameter exists, that data are output to a Touchstone file. If no
measurement data exists, 0 (for log magnitude - angle, log magnitude = -200 dB) is output
in the corresponding field.
Figure 10-4 through Figure 10-7 show the data structures of files saved in Touchstone
format.
Figure 10-4 1-port Touchstone file
362
•
•
Swz:Method(Stat) Sxz:Method(Stat) Syz:Method(Stat) Szz:Method(Stat)
S parameters of the selected test port; corresponds in ascending order,
beginning with 1 to w.
State of S parameter calibration (ON or OFF)
ON = Calibration is performed.
OFF =Calibration is not performed.
Data format
RI = Real number- imaginary number
MA = Linear magnitude - angle
DB = Log magnitude - angle
Reference impedance value
Chapter 10