:DISK:SPARameter:FNAMe
Command Syntax
:DISK:SPARameter:FNAMe "<path substitution string>\S-Parameter Data\filename"
Where:
- <path substitution string> is a string that expands into a specific file path. For example, %USER_DATA_DIR%.
- "subfolder" is an optional path folder. For example, %USER_DATA_DIR%\S-Parameter Data.
- "filename" is a string without the filename extension.
Query Syntax
:DISK:SPARameter:FNAMe?
Description
In TDR/TDT, Eye/Mask, and Oscilloscope modes, specifies a filename (including path) for saving S-parameters. The file name that you specify must not include a filename extension. The command argument must include a path substitution string. Use the :DISK:SPARameter:SAVE
command to actually save the file. If the file already exists, use the :DISK:SPARameter:FWBehavior
command to specify if existing S-parameter data in the file is handled. Use the query to determine the default S-parameter filename which is suggested based on the number of DUT ports. This command supports the DEFault
common child command.
Default User Folder

The default folder for storing S-parameters files is in %USER_DATA_DIR%\S-Parameter Data
as shown in this picture. It is good practice to include a path substitution string with the filename. For example, %USER_DATA_DIR%\S-Parameter Data\filename
.
File names must include a path when using the child :FNAMe
command. The :FNAMe
command is not affected by a Default Setup or Factory Preset.
Specifying a path using a path substitution string in the filename ensures that the file will be saved in (or loaded from) the standard user-data folder. Failure to use a path substitution string may result either in a file created in an parent folder or a file error.
File Type | Description |
---|---|
.s1p | One-port single-ended device data (S11 or S22) |
.s2p | Two-port single-ended device data (S11, S21, S22, S12) |
.s4p | Four-port single-ended device data |
.txt | Identical to the .s1p file type except for the .txt filename extension. |
Requires FlexDCA revision A.04.00 and above.
Example Command Sequence
:DISK:SPARameter:FNAMe "%USER_DATA_DIR%\S-Parameter Data\myfile" :DISK:SPARameter:SAVE