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– If you select an arbitrary waveform as the modulating waveshape ("USER"), the
Arbitrary waveforms are optionally available with the 33210A (Option 002). To
NOTE
upgrade your 33210A to include arbitrary waveform functionality, go to
www.keysight.com/find/33210U.
FM:INTernal:FREQuency {<frequency>|MINimum|MAXimum}
FM:INTernal:FREQuency? [MINimum|MAXimum]
Set the frequency of the modulating waveform. Used only when the Internal
modulation source is selected (FM:SOUR INT command). Select from 2 mHz to 20
kHz. The default is 10 Hz. MIN = 2 mHz. MAX = 20 kHz. The :FREQ? query returns
the internal modulating frequency in hertz.
FM:DEViation {<peak deviation in Hz>|MINimum|MAXimum}
FM:DEViation? [MINimum|MAXimum]
Set the peak frequency deviation in hertz. This value represents the peak variation
in frequency of the modulated waveform from the carrier frequency. Select any
value from 1 mHz to 5 MHz. The default is 100 Hz. MIN = 1 mHz. MAX = based on
the frequency of the carrier waveform as shown below. The :DEV? query returns
the deviation in hertz.
– The carrier frequency must always be greater than or equal to the deviation. If
Keysight 33210A User's Guide
waveform is automatically limited to 4K points. Extra waveform points are
removed using decimation.
Carrier
Max. Deviation =
- - - - - - - - - - - - -
Max. Frequency – Carrier
Max. Deviation =
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
you attempt to set the deviation to a value greater than the carrier frequency
(with FM enabled), the function generator will automatically adjust the
deviation to the maximum value allowed with the present carrier frequency.
From the remote interface, a "Data out of range" error will be generated and
the deviation will be adjusted as described.
2
2
Remote Interface Reference
For Carrier < 5 MHz
For Carrier > 5 MHz
4
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