
Command Reference
Frequency Modulation Subsystem ([:SOURce])
Chapter 4 249
:FM[1]|2:INTernal[1]|2:FREQuency
Supported PSG-A Series
[:SOURce]:FM[1]|2:INTernal[1]|2:FREQuency <val><unit>|UP|DOWN
[:SOURce]:FM[1]|2:INTernal[1]|2:FREQuency?
This command sets the internal frequency modulation rate for the following
applications:
• the first tone of a dual-sine waveform
• the start frequency for a swept-sine waveform
• the frequency rate for all other waveforms
*RST +4.00000000E+002
Remarks Refer to “:FM:INTernal:FREQuency:STEP[:INCRement]” on page 245
for setting the value associated with the UP and DOWN choices.
Refer to “:FM[1]|2:INTernal[1]|2:FUNCtion:SHAPe” on page 250 for
the waveform selection.
:FM[1]|2:INTernal[1]|2:FUNCtion:NOISe
Supported PSG-A Series
[:SOURce]:FM[1]|2:INTernal[1]|2:FUNCtion:NOISe GAUSsian|UNIForm
[:SOURce]:FM[1]|2:INTernal[1]|2:FUNCtion:NOISe?
This command sets the noise type when NOISe is the waveform choice.
*RST UNIF
Remarks Refer to “:FM[1]|2:INTernal[1]|2:FUNCtion:SHAPe” on page 250 for
the waveform selection.
Range Dual-Sine & Sine: 0.5HZ–1MHZ Swept-Sine: 1HZ–1MHZ
All Other Waveforms: 0.5HZ–100kHZ
Choices <val><unit> UP DOWN
Key Entry
FM Tone 1 Rate FM Start Rate FM Rate
Choices GAUSsian UNIForm
Key Entry
Gaussian
Uniform
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