Keysight N9923A FieldFox User Manual page 127

About SNP Files
 The SNP file includes header information, and the following data:
 Data is returned with the correction type that is applied for each S-parameter. The
 Only the data trace is saved – not the memory trace.
 In CAT Mode, S1P files are always Magnitude(dB) / Phase (angle) format.
 In NA Mode, SNP files for traces in Smith Chart or Polar format saves
 Trace Math is ignored when saving data to an SNP file.
File Management
Saves the current trace and instrument settings to a *.sta file.
Trace + State
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This file can be opened ONLY by a FieldFox. When recalled, the FieldFox sweep
is set to Hold.
Saves a 640 x 453 pixel image of the FieldFox screen to a *.png file.
Picture
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The picture does NOT include the softkeys.
Saves CAT and NA Mode trace data to an *.S1P or *.S2P file,
Data (S1P) / (2P)
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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.
 Choose S1P to save data for the active data trace.
 Choose S2P (NA Mode ONLY) to save the four S-parameters: S11, S21, S12, and
S22. Zeros are returned for parameters that are not displayed, except if full 2-
port correction is ON (option 122). In this case, corrected data for all S-
parameters is returned, even if not displayed.
S1P - saves 1-port (receiver) data for the active data trace. *.s1p Files contain 1
o
stimulus value and 1 S-parameter (total of 3 scalar values)
S2P (NA Mode ONLY) - saves data for two S-parameters (S11, S21) if they are
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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)
When parameters are corrected, data is returned even when not displayed.
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When parameters are NOT corrected or displayed, and the format is Mag/Phase,
zero-filled data appears as 0 dB and 0 degrees. When the format is
Real/Imaginary, zero-filled data appears as (1,0).
correction type for each S-parameter is annotated in the header.
Real/Imaginary format. All other trace formats are saved in Mag/Phase format.
o
Saves trace data from the current mode to a *.csv file. This format
Data (csv)
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can be imported into spreadsheet software such as Microsoft Excel.
In CAT Mode, only the single data trace is saved – not the memory trace.
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In NA Mode, all displayed data traces are saved – not the memory traces.
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In Power Meter and VVM Mode, NO data is saved.
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Stim Real(Sxx) Imag(Sxx)
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