Rohde & Schwarz R&S SMW200A - How to Generate a Modulated Signal

Configuring the RF Signal
R&S
®
SMW200A
561User Manual 1175.6632.02 ─ 30
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.
8.8.5 How To Generate a Modulated Signal
8.8.5.1 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".
To configure the amplitude modulation settings
1. In "Modulation" dialog, select the "AM" tab.
2. Set "Source = LF Generator1"
3. Set "Depth = 30%"
4. Select "State = I" to activate the modulation.
5. Set "RF > On" to enable signal output.
Analog Modulations