R&S SMJ100A, Operating Manual

Page: 362 / 874

Instrument Function
R&S
®
SMJ100A
346 Operating Manual 1403.7458.32 ─ 14
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
Selects a modulation type.
The associated symbol mapping is displayed in the "More..." submenu (see Chap-
ter 5.8.2.2, "Modulation Types - Custom Digital Mod" , on page 326).
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.
Remote command:
[:SOURce<hw>]:BB:DM:FORMat
on page 649
Load User Mapping
Selects user defined mapping table. This opens the "Select List File User Mapping"
window in which the mapping table can be selected (see
"User Mapping"
on page 330). 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.
Remote command:
[:SOURce<hw>]:BB:DM:MLISt:SELect
on page 663
[:SOURce<hw>]:BB:DM:MLISt:CATalog?
on page 655
[:SOURce<hw>]:BB:DM:MLISt:DELete
on page 662
ASK Depth
Sets the modulation depth m for ASK modulation.
m = (Amplitude
max
-Amplitude
min
) / (Amplitude
max
+Amplitude
min
)
Remote command:
[:SOURce<hw>]:BB:DM:ASK:DEPTh
on page 648
FSK Deviation
Sets the frequency deviation for FSK modulation. The range of values depends on the
chosen symbol rate (see data sheet).
Whenever "MSK" is selected, the deviation corresponds to 1/4 of the symbol rate and
cannot be set.
Remote command:
[:SOURce<hw>]:BB:DM:FSK:DEViation
on page 649
Angle Alpha
For AQPSK modulation, sets the angle alpha between the point (0,0) and the I axis.
Baseband Signal - Baseband Block