AWG Introduction
Signal source: The instrument used to generate various test signals is called a signal generator or signal source for short.
Signal source classification: According to the characteristics of the generated signal, it can be classified as:
- Sinusoidal signal generator
- Function generator
- Arbitrary waveform generator
- ……
AWG design ideas
The signal waveform to be reproduced is intercepted for one cycle for uniform sampling and stored in the memory. Read the waveform data in the memory in order, after DAC conversion, and then filter to obtain the desired waveform.
In principle, AWG and digital storage oscilloscope can be regarded as a reciprocal process. The digital storage oscilloscope digitizes the analog waveform through the ADC, and the AWG converts the digitized waveform data into an analog waveform through the DAC. Both types of instruments are bound by Nyquist's law, and the highest frequency component that can be measured / output does not exceed half the sampling rate of the ADC / DAC.
