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SIGLENT
SDG2000X User Manual 145
3.11 Example 11: Generate a PM Modulation
Waveform
Generate a PM modulation waveform, the carrier is a sine wave with 10kHz
frequency, and the modulating wave is a sine wave with 2kHz frequency and
90° phase deviation.
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‘5‘ from the keyboard and choose the unit ‗Vpp‘ to set the
amplitude to 5Vpp.
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 PM and parameters.
1. Press Mod → Type → PM, choose PM. Please notice that the message
shown on the middle left side of the screen is ‗PM‘.
2. Press PM Freq, input ‗2‘ from the keyboard and choose the unit ‗kHz‘ to
set the PM Freq to 2kHz.
3. Press Phase Dev, input ‗90‘ from the keyboard and choose the unit ‗ °‘ to
set the phase deviation to 90°.
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 3-11.
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