Keysight N9912A User Manual page 266

File Management
Saving and Recalling Files
About SNP Files
The SNP file includes header information, and the following data:
— Phase data is NOT available for port 2 (RF IN port).
— S1P - saves 1-port (receiver) data for the active data trace. *.s1p Files
contain 1 stimulus value and 1 S-parameter (total of 3 scalar values) Stim
Real(Sxx) Imag(Sxx)
— S2P (NA Mode ONLY) - saves data for two S-parameters (S11, S21) if they
are both displayed. *.s2p Files contain 1 stimulus value and 4 S-parameters
(total of 9 scalar values) Stim Real(S11) Imag(S11) Real(S21) Imag(S21)
Real(S12) Imag(S12) Real(S22) Imag(S22)
Corrections
— When parameters are corrected, data is returned even when not displayed.
Data is returned with the correction type that is applied for each
S-parameter. The correction type for each S-parameter is annotated in the
header.
— When parameters are NOT corrected or displayed:
17- 6
— Picture (PNG) Saves a 640 x 453 pixel image of the FieldFox screen to
a *.png file. The picture does NOT include the softkeys.
— Data (csv) Saves trace data from the current Mode to a *.csv file. This
format can be imported into spreadsheet software such as Microsoft
Excel. Column A is always the frequency at which the data is
measured.
——In SA Mode, all visible data traces are saved. Each trace is
saved to a separate column that is labeled with the Trace
State.
——In CAT and NA Modes, only the data trace is saved – not the
memory trace.
——In Power Meter and VVM Mode, NO data is saved.
— Data (S1P) / (S2P)
*.S2P file, depending on the active measurement. This file format is
used by CAE programs such as Keysight's Microwave Design System
(MDS) and Advanced Design System (ADS). It can also be imported
into spreadsheet software such as Microsoft Excel.
— With Smith chart and Polar formats, Real/Imag zero-filled data
appears as (1.0, 0.0).
— With all other formats, LogMag/Phase zero-filled data appears as
(0.0, 0.0).
Saves CAT and NA Mode trace data to an *.S1P or
Keysight N9912-90001 User's Guide