Set the internal modulation depth (or “percent modulation”) in percent.
Select from 0% to 120%. The default is 100%. MIN = 0%. MAX = 120%. The
:AM[1|2]:DEPT? query returns the modulation depth in percent. Note
that even at greater than 100% depth, the instrument will not exceed
hardware limits on the output (into a 50 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.
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