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SIGLENT
SDG2000X User Manual 141
3.9 Example 9: Generate an AM Modulation
Waveform
Generate an AM modulation waveform with 80% depth. The carrier is a sine
wave with 10kHz frequency, and the modulating wave is a sine wave with
200Hz frequency.
Steps:
Set the frequency, amplitude and offset of the carrier wave.
1. Press Waveforms , and choose the sine waveform as the carrier wave
2. Press Frequency/Period and choose Frequency which will display in blue
color. Input‘10‘ from the keyboard and choose the unit ‗kHz‘ to set the
frequency to 10kHz
3. Press Amplitude/HighLevel and choose Amplitude which will display in
blue color. Input‘1‘ from the keyboard and choose the unit ‗Vpp‘ to set the
amplitude to 1Vpp.
4. Press Offset/LowLevel and choose Offset which will display in blue color.
Input‘0‘ from the keyboard and choose the unit ‗Vdc‘ to set the offset to
0Vdc.
Set the modulation type AM and parameters.
1. Press Mod → Type → AM, choose AM. Please notice that the message
shown on the middle left side of the screen is ‗AM‘.
2. Press AM Freq, input‘200‘ from the keyboard and choose the unit ‗Hz‘ to
set the AM Freq to 200Hz.
3. Press AM Depth, input ‘80‘ from the keyboard and choose the unit ‗%‘ to
set the AM depth to 80%.
4. Press Shape → Sine, to choose sine wave as the modulating waveform.
When all parameters above are set, the waveform generated is shown in
Figure 3-9.
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