User Manual

RIGOL
© 2006 RIGOL Technologies, Inc.
User’s Guide for DG3000 Series
3-14
Example 8: To Generate an AM Waveform
How to generate an AM Waveform with 70% Depth. The Carrier is a Sine Wave with
2.5 kHz Frequency, and the modulating Wave is a Sine Wave with 150 Hz Frequency.
Steps:
1. Choose the Carrier Function:
Press Sine, and choose the Sine Waveform as the Carrier Wave.
The default setting of the Source is Internal.
2. Set the Frequency, Amplitude and Offset.
(1) Press Freq and choose Freq which will display in reverse color. Input
“2.5” from the keypad and choose the unit “kHz” to set the Frequency 2.5
kHz.
(2) Press Ampl and choose Ampl which will display in reverse color. Input
“2” from the keypad and choose the unit “Vpp” to set the Amplitude 2Vpp.
(3) Press Offset and choose Offset which will display in reverse color. Input
“0” from the keypad and choose the unit “Vdc” to set the Offset 0Vdc.
3. Set the Modulation Type AM.
Press Mod  Type  AM , choose AM . Please notice that the message
shown on the top left side of the screen is “AM”.
4. Set the Modulation Depth
Press AM Depth , use the keypad to enter “70”, choose the unit “%”, setting
the Modulation Depth 70%.
5. Set the AM Frequency
Press AM Freq , use the keypad to enter “150”, choose the unit “Hz”, setting
the AM Frequency 150Hz.
6. Choose the Modulating Waveform.
Press Shape  Sine , to choose Sine Waveform as the Modulating Waveform.
Please note that the State Message on the top left side of the screen shows
“Sine”.
At this time, the Generator generates the specified AM waveform. The Waveform is
shown in figure 3-9.