Keysight N9912A User Manual page 165

About SNP Files
 Phase data is NOT available for port 2 (RF IN port).
 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.
 The data for all S-parameters are written to an S2P file according to the format of
 Trace Math is ignored when saving data to an SNP file.
File Management
Saves ALL FieldFox instrument settings for ALL Modes to a *.sta file. If a
State
o
calibration is ON in CAT or NA Mode, calibration data is also saved. This file can
be opened ONLY by a FieldFox.
Saves the current trace and instrument settings to a *.sta file. In
Trace + State
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SA Mode, all traces are saved. 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.
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)
Zeros are returned for S12, and S22 parameters and for S21 phase. When both
o
are corrected, data is returned for both S-parameters, even when not displayed.
When 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.
Trace 1. In Smith Chart or Polar format, files are saved Real/Imaginary format. All
other trace formats are saved in Mag/Phase format.
Saves trace data from the current Mode to a *.csv file. This format
Data (csv)
o
can be imported into spreadsheet software such as Microsoft Excel.
In SA Mode, all visible data traces are saved. Each trace is saved to a separate
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column that is labeled with the Trace State.
In CAT and NA Modes, only the data trace is saved – not the memory trace.
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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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