Remote Interface Reference 4
Keysight 33210A User’s Guide 211
Frequency Modulation (FM) Commands
See also “Frequency Modulation (FM)” starting on page 92 in Chapter 3.
FM Overview
The following is an overview of the steps required to generate an FM waveform.
The commands used for FM are listed on the next page.
1 Configure the carrier waveform.
Use the APPLy command or the equivalent FUNC, FREQ, VOLT, and VOLT:OFFS
commands to select the function, frequency, amplitude, and offset of the
carrier waveform. You can select a sine or square waveform for the carrier
(ramp, pulse, noise, dc, and arbitrary are not allowed).
2 Select the modulation source.
The function generator will accept an internal or external modulation source.
Select the modulation source using the FM:SOUR command. For an external
source, you can skip steps 3 and 4 below.
3 Select the shape of the modulating waveform.
You can modulate the carrier with a sine, square, ramp, noise,
or arbitrary
waveform (pulse and dc are not allowed). Use the
FM:INT:FUNC command to
select the modulating waveshape.
4 Set the modulating frequency.
Set the modulating frequency to any value from 2 mHz to 20 kHz using the
FM:INT:FREQ command.
5 Set the peak frequency deviation.
Set the frequency deviation to any value from 1 mHz to 5 MHz using the
FM:DEV command.
6Enable FM modulation.
After you have set up the other modulation parameters, use the
FM:STAT ON command to enable FM.
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