Analog Modulations
R&S
®
SMA100B
106
User Manual 1178.3834.02 ─ 03
2. In the status bar, set "Frequency = 2 GHz".
3. Set "Level = -20 dBm".
Configuring the modulation signal (LF generator)
1. Select "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".
Configuring the amplitude modulation settings
1. In "Modulation" dialog, select the "AM" tab.
2. Set "Depth = 30%"
3. Set "Source = LF Generator1"
4. Select "AM > State = On" to activate the modulation.
5. Set "Level > RF ON" to enable signal output.
4.6 How to Generate a Pulse Modulated Signal
The following example uses the internal pulse generator.
Setting the frequency and level of the RF signal
1. Press PRESET.
2. In the status bar, set "Frequency = 4 GHz".
3. Set "Level = -25 dBm".
Configuring the pulse generator
1. Select "Modulation" > "Pulse Generator".
2. Select "Pulse Mode = Double".
3. Set "Pulse Period = 10 us".
4. Set "Pulse Width = 2 us".
5. Set "Double Pulse Width = 1.2 us".
6. Set "Double Pulse Delay = 4.5 us".
7. In the "Pulse Generator" dialog, select "Pulse Output State = On".
8. Select "Trigger Settings > Trigger Mode = Auto"
9. Observe the graph on the "Pulse Graph" tab.
How to Generate a Pulse Modulated Signal
