Tutorial 7
Keysight 33210A User’s Guide 347
Square Waveform Generation
To eliminate distortion due to aliasing at higher frequencies, the
33210A
uses a
different waveform generation technique to create square waves. Square
waveforms are created by routing a DDS-generated sine wave into a comparator.
The digital output from the comparator is then used as the basis for the square
wave output.
The duty cycle of the waveform can be varied by changing the
comparator’s
threshold.
Square Waveform Generation Circuitry
Anti-Aliasing
Waveform
Comparator
Threshold
DAC
Filter
Voltage DAC
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