Analog Modulations
R&S
®
SMA100B
105
User Manual 1178.3834.02 ─ 03
Access:
► Select "Modulation" > "Modulation Sources > Overview".
Blue color = Active modulation (AM and FM/PM)
Gray color = Inactive modulation
Thick line = Routing of the active modulation (FM/PM)
Dash line = Inactive modulation
"LF Out"
= Indicates the signal output: observe both, the source and the thick input line to the block
(in this example, the FM/PMM signal is output)
The "Overview" tab is an interactive diagram that indicates the active modulations
and the signal being output. Here you can:
● Select the output signal ("LF Out"); the setting acts as the parameter "LF Out-
put Source"
● Select the source for each modulation and modulation path; the setting acts as
the parameter "Source"
● Activate modulation in one or two paths; the setting acts as the parameter
"State"
To generate a two-tone signal composed form the two paths of the same mod-
ulation type, activate both paths.
4.5 How to Generate an Amplitude Modulated Signal
The following examples use the internal LF generator.
Setting the frequency and level of the RF signal
1. Press PRESET to start from a defined state.
How to Generate an Amplitude Modulated Signal