:DISK:SPARameter:SAVE

Instrument:

DCA-X

DCA-M

Meas. mode:

Scope

Eye

Jitter

TDR

Flex Apps:

FlexDCA

Command Syntax

:DISK:SPARameter:SAVE

Description

In TDR/TDT, Eye/Mask, and Oscilloscope modes, saves S-parameters to a Touchstone file. Use the :DISK:SPARameter:FNAMe command to specify the filename. Use the :DISK:SPARameter:DUT command to specify the DUT. Use the :DISK:SPARameter:PSET command to select the S-parameters to save.

Touchstone files can be imported into Keysight's Physical Layer Test Systems (PLTS) for further analysis. S-parameters cannot be imported back into TDR mode. However, S-parameters can be imported into the following FlexDCA Waveform Signal Processing operators:

Apply s2p (:SPRocess:CONVolve:FNAMe)
Apply s4p (:SPRocess:DCONvolve:FNAMe)
Remove s2p (:SPRocess:DEConvolve:FNAMe)
Remove s4p (:SPRocess:DDEConvolve:FNAMe)

These operators are used to transform measured waveforms to compensate for the effects of various test-setup devices.

For DUTs with balanced ports, single-ended S-parameters can be saved, but common (SCCxx), differential (SDDxx), and mixed-stimulus (SDCxx, SCDxx) parameters cannot be saved to a file.

Requires FlexDCA revision A.04.00 and above.

Related Commands

:DISK:SPARameter:DSDiff to mathematically derive S-parameters.
:DISK:SPARameter:DSIoutput to mathematically derive S-parameters.
:DISK:SPARameter:DSReciprocal to mathematically derive S-parameters.
:DISK:SPARameter:DUT specifies the source for S-parameters.
:DISK:SPARameter:EADifferenti S-parameters for Touchstone 2.0 file.
:DISK:SPARameter:FNAMe specifies filename for saving S-parameters.
:DISK:SPARameter:FWBehavior selects file-writing behavior.
:DISK:SPARameter:LFName file to load into S-parameter memory.
:DISK:SPARameter:PSET specifies S-parameter set to save to a Touchstone file.
:DISK:SPARameter:RECall loads S-parameter file into S-parameter memory.
:DISK:SPARameter:RECall:DESTination selects S-parameter memory to load an S-parameter file.

Example Command Sequence

:DISK:SPARameter:DUT DUT1
:DISK:SPARameter:PSET S1_1, S1_3, S2_1, S2_3, S3_1, S3_3, S4_1, S4_3
:DISK:SPARameter:FWBehavior REPLace
:DISK:SPARameter:DSReciprocal ON
:DISK:SPARameter:DSIoutput ON
:DISK:SPARameter:FNAMe "%USER_DATA_DIR%\S-Parameter Data\SParameter_Test.s4p"
:DISK:SPARameter:SAVE