Agilent Technologies 33250A User Manual page 171

AM:INTernal:FREQuency {<frequency>|MINimum|MAXimum}
AM:INTernal:FREQuency? [MINimum|MAXimum]
Set the frequency of the modulating waveform. Used only when the
Internal modulation source is selected (AM:SOUR INT command).
Select from 2 mHz to 20 kHz. The default is 100 Hz. MIN = 2 mHz.
MAX = 20 kHz. The :FREQ? query returns the internal modulating
frequency in hertz.
AM:DEPTh {<depth in percent>|MINimum|MAXimum}
AM:DEPTh? [MINimum|MAXimum]
Set the internal modulation depth (or "percent modulation") in percent.
Select from 0% to 120%. The default is 100%. MIN = 0%. MAX = 120%.
The :DEPT? query returns the modulation depth in percent.
• Note that even at greater than 100% depth, the function generator
will not exceed ±5V peak on the output (into a 50Ω load).
• If you select the External modulating source (AM:SOUR EXT command),
the carrier waveform is modulated with an external waveform.
The modulation depth is controlled by the ±5V signal level present
on the rear-panel Modulation In connector. For example, if you have
set the modulation depth to 100% using the AM:DEPT command,
then when the modulating signal is at +5 volts, the output will be at
the maximum amplitude. When the modulating signal is at -5 volts,
then the output will be at the minimum amplitude.
AM:STATe {OFF|ON}
AM:STATe?
Disable or enable AM. To avoid multiple waveform changes, you can
enable AM after you have set up the other modulation parameters.
The default is OFF. The :STAT? query returns "0" (OFF) or "1" (ON).
• The function generator will allow only one modulation mode to be
enabled at a time. For example, you cannot enable AM and FM at the
same time. When you enable AM, the previous modulation mode is
turned off.
• The function generator will not allow AM to be enabled at the same
time that sweep or burst is enabled. When you enable AM, the sweep
or burst mode is turned off.
Chapter 4 Remote Interface Reference
Amplitude Modulation (AM) Commands
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