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RIGOL Chapter 17 Function/Arbitrary Waveform Generator (Option)
17-14 DS8000-R User Guide
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
been early used in information transmission. Its 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
Click Polarity continuously to select "Positive" or "Negative" of the modulating
waveform to control the frequency output.
2. Set the Modulation Frequency
Click FSK Rate, then use the pop-up numeric keypad or scroll with the mouse
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 10 kHz. Click Hop Freq, then use the
pop-up numeric keypad or scroll with the mouse to set the hopping frequency.
Sweep
The built-in Function/Arbitrary Waveform Generator of DS8000-R series oscilloscope
supports the sweep function. In the sweep mode, the Function/Arbitrary Waveform
Generator outputs from the start frequency to the end frequency at a specified
sweep time. DS8000-R 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.
Internal and Manual trigger sources are supported. The sweep output is available for
Sine, Square, Ramp, and Arb (DC excluded) waveforms.
Click Settings → Type to select "Sweep".
1. Set the Sweep Type
Click Sweep Type to select the desired sweep type. The available sweep types
include Linear, Log, and Step.
âš« Linear: the frequency of the signal changes linearly.
âš« Log: the frequency of the signal changes in log form.
âš« Step: the frequency of the signal changes with ladder-like step.
2. Sweep Settings
Click Settings to enter the sweep setting menu.
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