Circuit of digital storage oscillograph

Abstract

The invention relates to a circuit of a digital storage oscillograph, which comprises a signal conditioning circuit, a trigger conditioning circuit, a self-correcting signal compensating module, an ADC collecting module, an FPGA storage module, an MCU control module, an LCD display module and an AC / DC switch power supply module which provides working voltage to the whole digital storage oscillograph, wherein the signal conditioning circuit is connected with the ADC collecting module, the ADC collecting module and the trigger conditioning circuit are connected with the FPGA storage module, the FPGA storage module is connected with the MCU control module, the MCU control module is connected with the LCD display module, a high-precision DAC converting module is connected between the self-correcting signal compensating module and the FPGA storage module, and the output of the self-correcting signal compensating module is connected with the signal conditioning circuit and the input of the trigger conditioning circuit. The circuit has good performance, high stability and reliability and low cost, and occupies small area of a PCB plate, and the whole oscillograph has small volume and is convenient to carry.

Description

technical field [0001] The invention relates to an oscilloscope, in particular to a digital storage oscilloscope circuit. Background technique [0002] An oscilloscope is an electronic measuring instrument. It is used in occasions where it is necessary to observe the voltage and current waveforms of the circuit, debug, analyze, and judge circuit faults. The oscilloscope can observe the instantaneous voltage relative to time. It can display the shape of the waveform and can Measure parameters such as amplitude, frequency, and phase. With the cooperation of some appropriate sensors, the oscilloscope can also observe some non-electrical changes. [0003] Existing analog and digital oscilloscopes are generally bulky. The connection of the power conversion module and its protection circuit is complicated, and the stability and reliability are not ideal. The signal conditioning module adopts a multi-stage attenuation module, and adopts a multi-stage high-speed operational ampli...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems that the original oscilloscope is large in size, inconvenient to carry, low in data processing speed and waveform capture rate, unsatisfactory in stability and reliability, and can no longer meet the needs of the rapid development of the current electronic field; provides a circuit Simple, small PCB board area, easy to carry oscilloscope, high data processing speed and waveform capture rate, digital storage oscilloscope circuit with improved stability and reliability

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