SIGLENT UM0202X-E02C - Example 12: Generate a FSK Modulation Waveform

SIGLENT
148 SDG2000X User Manual
3.12 Example 12: Generate a FSK Modulation
Waveform
Generate a FSK modulation waveform with 200Hz key frequency. The carrier
is a sine wave with 10kHz frequency, and the hop frequency is 500Hz.
 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 FSK and parameters.
1. Press Mod → Type → FSK, choose FSK. Please notice that the message
shown on the middle left side of the screen is ‘FSK’.
2. Press Key Freq, input’200’ from the keyboard and choose the unit ‘Hz’ to
set the key frequency to 200 Hz.
3. Press Hop Freq, input ‘500’ from the keyboard and choose the unit ‘Hz’ to
set the hop frequency to 500Hz.
When all parameters above are set, the waveform generated is shown in
Figure 3-12.