3 Features and Functions
90 Keysight 33210A User’s Guide
Modulating Waveform Frequency
The function generator will accept an internal or external modulation source for
AM.
– Modulating frequency (internal source): 2 mHz to 20 kHz.
The default is 100 Hz
.
– Front-Panel Operation: After enabling AM, press the AM Freq softkey.
– Remote Interface Operation:
AM:INTernal:FREQuency {<frequency>|MINimum|MAXimum}
Modulation Depth
The modulation depth is expressed as a percentage and represents the extent of
the amplitude variation. At 0% depth, the output amplitude is half of the selected
value. At 100% depth, the output amplitude equals the selected value.
– Modulation depth: 0% to 120%. The default is 100%.
– 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, 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%, 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
.
– Front-Panel Operation: After enabling AM, press the AM Depth softkey. Then
use the knob or numeric keypad to enter the depth.
– Remote Interface Operation:
AM:DEPTh {<depth in percent>|MINimum|MAXimum}