User Manual

RIGOL
© 2006 RIGOL Technologies, Inc.
User’s Guide for DG3000 Series
2-33
AM
The modulated waveform consists of two parts: the Carrier Waveform and the
Modulating Waveform. In AM, the Amplitude of the Carrier Waveform varies with the
instantaneous voltage of the modulating waveform. The Parameters for the AM are in
table 2-22.
Press Mod  Type  AM , to enter the following menu.
Figure 2-39 Table 2-22 The Menu Explanations of the AM Parameters
Function
Menu
Settings
Explanation
AM Freq
Set the modulating waveform
frequency. Frequency Range:
2mHz~20kHz ( Internal Source Only ).
AM Depth
Set the amplitude range
Type
AM
Amplitude Modulation
Shape
Sine
Square
Triangle
UpRamp
DnRamp
Noise
Arb
Choose the modulating Waveform. To
change the Carrier Waveform
parameter, press Sine, Square etc.
Source
Internal
The Source is Internal
External
The Source is External. Use the
[Modulation In] connector in the Rear
panel.
Term Explanation
Modulation Depth
The Amplitude Range (also called “Percentage Modulation”). Modulation Depth
varies from 1% to 120%.
 In the 0% Modulation, the output amplitude is the half of the set one.
 In the 100％ Modulation，the output amplitude is the same with the set one.
 For an external source, the depth of AM is controlled by the voltage level of the
connector connected to the [Modulation In]. +5V corresponds to the currently
set depth 100%.