Configuring the Internal Baseband Source
R&S
®
SMBV100B
228User Manual 1178.4460.02 ─ 03
Remote command:
[:SOURce<hw>]:BB:ARBitrary:MCARrier:PRESet on page 762
Save/Recall Frame
Accesses the standard "Save/Recall" dialog, i.e. the standard instrument function for
storing and recalling the complete dialog-related settings. Refer to Chapter 9.4, "Sav-
ing and Recalling Instrument Settings", on page 480 for a detailed description.
The multi-carrier settings are stored as files with the predefined file extension
*.arb_multcarr. The filename and the directory they are stored in are user-defina-
ble.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:MCARrier:SETTing:CATalog? on page 762
[:SOURce<hw>]:BB:ARBitrary:MCARrier:SETTing:LOAD on page 762
[:SOURce<hw>]:BB:ARBitrary:MCARrier:SETTing:STORe on page 763
Mode
Selects the way the carriers are distributed within the available bandwidth.
"Equidistant Carrier Spacing"
Sets an equidistant carrier spacing distribution, i.e. the carriers are
equally spaced and centered toward the RF frequency. The carrier
frequencies are automatically calculated depending on the selected
number of carriers and the carrier spacing.
"Arbitrary Carrier Frequency"
Enables the specification of the carrier frequency of each carrier indi-
vidually.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:MCARrier:CARRier:MODE on page 763
Number of Carriers
Sets the number of carriers for the multi-carrier waveform. By default the multi-carrier
table lists one carrier. A maximum of 512 carriers can be configured and activated.
When the number of carriers is increased, new lines are added at the end of the table.
If these carriers already have been defined before, the settings are preset according to
the former settings. Otherwise the parameters are preset with the default values.
See also Chapter 3.8.2.1, "Defining the Carrier Frequency", on page 225.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:MCARrier:CARRier:COUNt on page 763
Carrier Spacing
Sets the frequency spacing between adjacent carriers of the multi-carrier waveform.
The carriers are arranged symmetrically around the RF carrier and the maximum car-
rier spacing is limited to:
"Carrier Spacing" =
Baseband bandwidth /("Number of Carriers" - 1).
The baseband bandwidth depends on the installed options (see the data sheet).
For more information, see Chapter 3.8.2.1, "Defining the Carrier Frequency",
on page 225.
Generating Multi-Carrier Signals
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