Instrument Function
R&S
®
SMU200A
354Operating Manual 1007.9845.32 ─ 15
When the modulation type changes, the range is automatically redefined. If the set sym-
bol rate is outside this range, an error message is generated and the maximum value for
the newly chosen modulation type is automatically set.
SCPI command:
[:SOURce<hw>]:BB:DM:SRATe on page 623
Coding - Digital Modulation
Selects the coding (see chapter 5.8.3.3, "Coding - Custom Digital Mod", on page 342).
The menu offers only the coding settings that are permissible for the chosen modulation
type. The other coding methods are grayed out.
If the system is subsequently switched to a modulation type for which the selected coding
is not available, coding is automatically set to OFF.
SCPI command:
[:SOURce<hw>]:BB:DM:CODing on page 640
Modulation
The modulation type is set in the "Modulation section". The parameters offered depend
on what is currently selected. The "More..." button opens a submenu for displaying the
user-defined mapping.
Modulation Type - Digital Modulation
Selects a modulation type.
The associated symbol mapping is displayed in the "More..." submenu (see chap-
ter 5.8.3.2, "Modulation Types - Custom Digital Mod", on page 338).
If the "coding" that is set is not possible with the chosen modulation type, "coding" is set
to "Off".
For selection "Variable FSK", the deviation of each symbol can be set in the "More..."
submenu.
SCPI command:
[:SOURce<hw>]:BB:DM:FORMat on page 640
Load User Mapping - Digital Modulation
Selects user defined mapping table. This opens the "Select List File User Mapping" win-
dow in which the mapping table can be selected (see chapter 5.8.3.2.1, "User Map-
ping", on page 341). The button is only available if modulation type "USER" is selected.
The button "File Manager" calls the "File Manager" menu. The "File" "Manager" menu is
used to display and delete files.
SCPI command:
[:SOURce<hw>]:BB:DM:MLISt:SELect on page 654
[:SOURce<hw>]:BB:DM:MLISt:CATalog on page 646
[:SOURce<hw>]:BB:DM:MLISt:DELete on page 653
ASK Depth - Digital Modulation
Sets the modulation depth m for ASK modulation.
Baseband Signal - Baseband Block
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