Remote Control Commands
R&S
®
SMW200A
1026User Manual 1175.6632.02 ─ 16
13.18.5 SOURce:CORRection Subsystem
The SOURce:CORRection subsystem contains the commands for defining correction
values for external test assemblies.
You can acquire the correction values any time, regardless of the modulation settings
of the generator. The correction is performed by adding the correction values to the
output level of the respective RF frequency.
Determine the correction values in one of the following ways:
●
Measure the RF output level at several frequency points and enter the value pairs
manually in a table
●
Connect an R&S NRP to the generator output signal and send the command [:
SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe to
fill the table automatically.
Correction values can be stored in files with the predefined file extension *.uco.
Refer to Chapter 13.7.2, "Accessing Files in the Default or in a Specified Directory",
on page 777 for general information on file handling in the default and in a specific
directory.
Programming example
The examples in this section assume that:
●
The files are stored in the default directory.
●
The same tables are accessed for both paths. File operations such as creating,
deleting and querying files are therefore path-independent.
In this case, the suffix in the keyword SOURce must be omitted. An error message
is displayed if the suffix is specified.
●
*RST does not affect data lists.
Example: Create a table with user-defined correction values for the RF level
The following example shows a command sequence to create and activate a list for
assigning level correction values to arbitrary RF frequencies. Further hardware settings
are not considered.
// Reset the instrument to start from an initial state
// Query the available user correction list files in the default directory
// Select a file or create a new one
// ******************************************************************
*RST; *CLS
SOURce1:CORRection:CSET:CATalog?
// Response: shows the name of available user correction files (if applicable)
// Select a file
SOURce1:CORRection:CSET:SELect "/var/user/ucor1"
// Create a new file (if not existing)
SOURce1:CORRection:CSET:SELect "/var/user/ucor2"
// Enter the frequency/level value pairs in the table;
SOURce Subsystem
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