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RIGOL Chapter 18 Function/ Arbitrary Waveform Generator (Option)
18-16 MSO8000 User's Guide
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. I t is one of the modulation methods that have
been early used in information transmission. I ts advantages lie in good performance
in anti-noise and anti-attenuation, and it has been widely used in low and medium
rate of data transmission
.
1. Set the Modulation Polarity
Press Polarity continuously to select "Positive" or "Negative" of the modulating
waveform to control the frequency output.
2. Set the Modulation Frequency
Press FSK Rate, then rotate the multifunction knob or use the pop-up
numeric keypad to set the frequency of the modulation signal. The available
range is from 1 Hz to 50 kHz.
3. Set the Hopping Frequency
Hopping frequency indicates the frequency of the modulating waveform. The
range of the hopping frequency is from 100 mHz to the maximum frequency of
the carrier waveform. By default, it is 1 kHz. Press Hop Freq, then rotate the
multifunction knob
or use the pop-up numeric keypad to set the hopping
f r eq u en cy.
Sweep
The built-in Function/ Arbitrary Waveform Generator of MSO8000 series oscilloscope
supports the sweep function. I n the sweep mode, the Function/ Arbitrary Waveform
Generator outputs from the start frequency to the end frequency at a specif ied
sweep time. MSO8000 series supports 3 sweep modes: Linear, Log, and Step. You
are allowed to set the parameters such as Start Keep, End Keep, and Return Time.
I nternal, External, and Manual trigger sources are supported. The sweep output is
available for Sine, Square, Ramp, and Arb (DC excluded) waveforms.
Press Settings ïƒ Type, and rotate the multifunction knob to select "Sweep",
and then press down the knob to select it. You can also press Type continuously or
enable the touch screen to select it.
1. Set the Sw eep Type
Press Sweep Type, and rotate the multifunction knob to select the desired
sweep type, and then press down the knob to select it. You can also press
Sweep Type continuously or enable the touch screen to select it. The available
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