Abstract
The digital oscilloscope adopts STM32 MCU as the control core, uses the IDT7201 for memory, through the AD converter ADS830 real-time sampling achieve the extraction of the input signal and digital storage, display; Crossover functions are realized by CPLD to provide accurate clock for MCU, FIFO, ADS830, and communicate with MCU through SPI agreement. Software design to achieve control A/D converter start-up and storage of the sample data, calculate the frequency and amplitude, buttons and LCD screen.Using Altium Designer software to design and produce a digital oscilloscope printed circuit board PCB, and complete the whole production and commissioning. The digital oscilloscope can be real-time accurate sampling and show the general low frequency signal, can be used when using battery power, small volume, convenient to carry, it can be easily integrated into the experiment box, to become a part of it, and other function modules to form a whole.
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