Agilent Technologies FieldFox N9912A, User Manual

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154 N9912A FieldFox User’s Guide
o
Data (S1P) / (2P)
Saves CAT and NA Mode trace data to an *.S1P or *.S2P
file, depending on the active measurement. This file format is used by CAE
programs such as Agilent's Microwave Design System (MDS) and Advanced
Design System (ADS). It can also be imported into spreadsheet software
such as Microsoft Excel.
About SNP Files

Phase data is NOT available for port 2 (RF IN port).

The SNP file includes header information and the following data:
o
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)
o
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(S2
2)
o
Zeros are returned for S12, and S22 parameters and for S21 phase. When
both 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).

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.

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 1. In Smith Chart or Polar format, files are saved Real/Imaginary
format. All other trace formats are saved in Mag/Phase format.

Trace Math is ignored when saving data to an SNP file.
o
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.
o In SA Mode , all visible data traces are saved. Each trace is saved to a
separate column that is labeled with the Trace State.
o In CAT and NA Modes , only the data trace is saved – not the memory
trace.
o In Power Meter and VVM Mode , NO data is saved.