RIGOL
© 2006 RIGOL Technologies, Inc
User’s Guide for DG2000 Series
3-10
Example 8: To Generate an AM Waveform
How to generate an AM Waveform with depth of 70%, the Carrier wave is a Sine Wave
with 2.5 kHz Frequency, and the modulating Wave is a Sine Wave with 150 Hz
Frequency.
The operation 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 Period/Freq and choose Freq which will display in reverse color.
Enter “2.5” from the keypad and choose the unit “kHz” to set the Frequency
as 2.5kHz.
(2)
Press Ampl/HiLev and choose Ampl which will display in reverse color.
Enter “2” from the keypad and choose the unit “V
pp
” to set the Amplitude as
2 V
pp
.
(3)
Press Offset/LoLev and choose Offset which will display in reverse
color. Enter “0” from the keypad and choose the unit “V
dc
” to set the Offset
as 0 V
dc
.
3.
Set the Modulation Type AM.
Press Mod
Æ
Type
Æ
AM , Please notice that the message shown on the top
left side of the screen is “AM”.
4.
Set the Modulation Depth
Press Depth , use the keypad to enter “70”, choose the unit “%”, setting the
Modulation Depth as 70%.
5.
Set the AM Frequency
Press Freq , use the keypad to enter “150”, choose the unit “Hz”, setting the AM
Frequency as 150Hz.
6.
Choose the Modulating Waveform.
Press Shape
Æ
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”.
