Tektronix AFG3000 Series, User Manual

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Operating basics
3. Select modulation source.
4. Set modulation frequency.
5. Select modulation shape.
6. Set modulation depth.
7. This is an example amplitude
modulation waveform displayed
on an oscilloscope screen.
Quick Tips You can output frequency modulation or phase modulation waveforms in
the same way.
You cannot select Pulse, Noise, or DC as a carrier waveform.
You can select an internal or external signal as an AM source. If you select
an external source and set the modulation depth to 120%, the output will be
at the maximum amplitude when a ±1 V
p-p
signal is applied to the rear panel
EXT MODULATION INPUT connector.
You can select a modulation shape from the internal memory or USB memory.
The following equations show the output amplitude of AM, FM, and PM
modulation (in this example, sine waveform is used for carrier waveform
and modulation waveform):
AM: Output(V
p-p
)= (1 +
)
FM: Output(V
p-p
)=
PM: Output(V
p-p
)=
AFG3000 and AFG3000C Series User Manual 59