Rohde & Schwarz SMBV100B - How to Generate an Amplitude Modulated Signal

Configuring the RF Signal
R&S
®
SMBV100B
373User Manual 1178.4460.02 ─ 03
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") per path; the setting acts as the parameter
"LF Output Source"
● Select the source for each modulation and modulation path; the setting acts as
the parameter "Source"
● Activate modulation per path; the setting acts as the parameter "State"
To generate a two-tone signal composed form the two paths of the same modu-
lation type, activate both paths.
● Activate "FM" or "PhiM"; the two modulations are mutually exclusive.
LFOut
Label for the LF output settings in the overview.
Remote command:
n.a.
AM
Label for the amplitude modulation settings in the overview.
Remote command:
n.a.
FM/PhiM
Selects the modulation signal to be assigned to the output. You can assign the fre-
quency or phase modulated signal.
Remote command:
n.a.
6.11.5 How to Generate an Amplitude Modulated Signal
The following examples use the internal LF generator.
To set the frequency and level of the RF signal
1. Press [Preset] to start from a defined state.
2. In the status bar, set "Frequency = 2 GHz".
3. Set "Level = -20 dBm".
To configure the modulation signal (LF generator)
1. Select "RF" > "Analog Modulation" > "Modulation Source".
2. In the "Sources" tab, select "Shape > Sine".
3. Set "Frequency = 20 kHz".
The period is calculated automatically and indicates "Period = 50.00 µs".
Analog Modulations