Keysight Technologies DSO-X 2002A, User Manual

Page: 223 / 352

Waveform Generator
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Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide 223
• Press the Type softkey and turn the Entry knob to select the modulation type:
• Amplitude Modulation (AM) — the amplitude of the original carrier signal is
modified according to the amplitude of the modulating signal. See “To
set up Amplitude Modulation (AM)" on page 223.
• Frequency Modulation (FM) — the frequency of the original carrier signal is
modified according to the amplitude of the modulating signal. See “To
set up Frequency Modulation (FM)" on page 224.
• Frequency-Shift Keying Modulation (FSK) — the output frequency "shifts"
between the original carrier frequency and a "hop frequency" at the
specified FSK rate. The FSK rate specifies a digital square wave
modulating signal. See “To set up Frequency-Shift Keying Modulation
(FSK)" on page 226.
To set up Amplitude Modulation (AM)
In the Waveform Generator Modulation Menu (under [Wave Gen] > Settings >
Modulation ):
1 Press the Type softkey and turn the Entry knob to select Amplitude Modulation
(AM) .
2 Press the Waveform softkey and turn the Entry knob to select the shape of the
modulating signal:
• Sine
• Square
• Ramp
• Sine Cardinal
• Exponential Rise
• Exponential Fall
When the Ramp shape is selected, a Symmetry softkey appears so that you can
specify the amount of time per cycle that the ramp waveform is rising.
3 Press the AM Freq softkey and turn the Entry knob to specify the frequency of
the modulating signal.
4 Press the AM Depth softkey and turn the Entry knob to specify the amount of
amplitude modulation.