User Manual

Modulation Function 42
• The modulation frequency ranges from 1mHz to 1MHz.
• When external modulation source is selected, this menu is hidden.
9.1.5.1 DSB-AM
DSB-AM is an abbreviation for Double-Sideband Suppressed Carrier –
Amplitude Modulation. Press Mod → Type → DSB-AM. The parameters of DSB-AM modulation are shown in Fig-
ure 9.2.
Function Description
Type DSB-AM DSB Amplitude modulation.
Source Internal The source is internal.
External The source is external. Use the [Aux In/Out] connector at the rear panel.
DSB Freq Set the modulating waveform frequency. Frequency range: 1mHz~1MHz (internal source
only).
Shape Sine Choose the modulating waveform.
Square
Triangle
UpRamp
DnRamp
Noise
Arb
Figure 9.2 Setting Interface of DSB-AM Modulation
Note: The methods of setting the parameters of DSB-AM are similar to AM.
9.1.5.2 FM
The modulated waveform consists of two parts: the carrier and the modulating waveform. In FM, the frequency of the
carrier varies with the instantaneous voltage of the modulating waveform.
Press Mod → Type → FM, the parameters of FM modulation are shown in Figure 9.3.