AM Modulation Commands
See also “Amplitude Modulation,” starting on page 71 in chapter 3.
AM Overview
The following is an overview of the steps required to generate an
AM waveform. The commands used for AM are listed on the next page.
1 Set up the carrier waveform.
Use the APPLy command or the equivalent FUNC:SHAP, FREQ, VOLT,
and VOLT:OFFS commands to select the function, frequency, amplitude,
and offset of the carrier waveform. You can select a sine, square,
triangle, ramp, or arbitrary waveform for the carrier.
2 Select the shape of the modulating waveform.
You can modulate the carrier with a sine, square, triangle, ramp, noise,
or arbitrary waveform. Use the AM:INT:FUNC command to select the
modulating waveshape.
3 Set the modulating frequency.
Set the modulating frequency to any value between 10 mHz and 20 kHz
using the AM:INT:FREQ command.
4 Set the modulation depth.
Set the modulation depth to a value between 0% and 120% using
the AM:DEPT command.
5 Select the modulation source.
The function generator will accept an internal modulating signal, an
external modulating signal, or both. Select the modulating source using
the AM:SOUR command.
6Enable AM modulation.
After you have set up the other modulation parameters, use the
AM:STAT ON command to enable
AM.
Chapter 4 Remote Interface Reference
AM Modulation Commands
154
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