Rohde & Schwarz SMU200A - 7.15.5 Source:correction Subsystem; Default Chapter; Source:correction Subsystem

Remote Control Commands
R&S
®
SMU200A
698Operating Manual 1007.9845.32 ─ 15
BBIN:SOUR ANAL
selects an external analog signal as the input signal. The signal
must be applied at the inputs I and Q.
BBIN:STAT ON
switches on the Baseband In block. The external analog signal is
A/D-converted and fed into the digital signal.
Example:
7.15.5 SOURce:CORRection Subsystem
The output level is corrected in the CORRection subsystem. Correction is performed by
user-defined table values being added to the output level for the respective RF frequency.
In the R&S SMU, this subsystem is used to select, transfer and activate user correction
tables.
Each list is stored as a file. The name of the user correction file can be freely selected.
The file extension *.uco is assigned automatically and cannot be changed.
The files can be stored in a freely selectable directory and opened from there. The default
directory is set using command :MMEMory:CDIRectory on page 547. In the case of
files which are stored in the default directory, only the file name has to be specified in
commands. Otherwise, the complete absolute path has to be specified with every com-
mand. The extension can be omitted in any case.
In the following command examples, the files are stored in the default directory.
The amplitude can also be linearized automatically by means of a R&S NRP power sen-
sor connected to the generator output signal. With the aid of the command
[:SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe, a
list with correction values for external test assemblies can be automatically determined,
e.g. for compensating the frequency response of cables. The correction values can be
acquired any time irrespective of the modulation settings of the generator.
Multi level measurements allow to take into account the changing VSWR for the different
attenuator settings (see
[:SOURce<hw>]:CORRection:CSET:DATA:POWer:MLEVel<ch> on page 701).
For two-path instruments, 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 under SOURce must be omitted. An error message is displayed if the suffix is
specified.
[:SOURce]:CORRection:CSET:CATalog...........................................................................699
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency....................................................699
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency:POINts.........................................700
[:SOURce<hw>]:CORRection:CSET:DATA:POWer...........................................................700
[:SOURce<hw>]:CORRection:CSET:DATA:POWer:POINts................................................700
[:SOURce<hw>]:CORRection:CSET:DATA:POWer:MLEVel<ch>........................................701
SOURce Subsystem