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Chapter 17 Function/Arbitrary Waveform Generator (Option)
FM
FM (Frequency Modulation), namely the frequency of the carrier waveform changes
with that of the modulating waveform, as shown in the figure below.
1. Select the Modulating Waveform
Press Waveform, and rotate the multifunction knob
modulating waveform, and then press down the knob to select it. You can also
press Waveform continuously or enable the touch screen to select it. The
available modulating waveforms include Sine, Square, Triangle, and Noise.
2. Set the Modulation Frequency
Press Frequency, then rotate the multifunction knob
numeric keypad to set the frequency of the modulation signal. The available
range is from 1 Hz to 50 kHz.
3. Set the Frequency Offset
Press Deviation, then rotate the multifunction knob
numeric keypad to set the frequency deviation of modulating waveform from the
carrier frequency. The available range of the frequency deviation is from 0 Hz to
the frequency of the current carrier waveform, and the sum of the frequency
deviation and carrier frequency cannot be greater than the maximum frequency
of the current carrier waveform.
FSK
FSK (Frequency-shift Keying) is a modulation method that uses the digital signal to
control the carrier frequency changes. It is one of the modulation methods that have
MSO5000 User's Guide
nd Quality Products Online at:
Figure 17-11 Frequency Modulation
GlobalTestSupply
www.
Modulating
Signal
Carrier Signal
Modulating
Waveform
to select the desired
or use the pop-up
or use the pop-up
.com
sales@GlobalTestSupply.co
RIGOL
17-15
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