Modulating Source - Agilent Technologies 33220A User Manual

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Chapter 3 Features and Functions
Amplitude Modulation (AM)

Modulating Source

The function generator will accept an internal or external modulation
source for AM.
• Modulating source: Internal or External. The default is Internal.
• If you select the External 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.
Modulation
In
• Front-Panel Operation: After enabling AM, press the Source softkey.
• Remote Interface Operation:
AM:SOURce {INTernal|EXTernal}
78
+5 V
0 V
-5 V