Circuit of digital storage oscillograph

A technology of digital storage and oscilloscope, which is applied in the direction of digital variable/waveform display, instrument, and measurement of electrical variables, etc. It can solve the problems of low data processing speed and waveform capture rate, unsatisfactory stability and reliability, and large oscilloscope volume. Achieve excellent small-signal full-bandwidth test capability, stable and reliable mains trigger, and small PCB board area

Active Publication Date: 2010-04-14
QINGDAO HANTEK ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 nee

Method used

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  • Circuit of digital storage oscillograph
  • Circuit of digital storage oscillograph
  • Circuit of digital storage oscillograph

Examples

Experimental program
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Example Embodiment

[0020] Embodiment 1: The digital storage oscilloscope circuit of this embodiment, such as figure 1 As shown, it includes a signal conditioning circuit 1, a trigger conditioning circuit 2, a self-correcting signal compensation module 3, an ADC acquisition module 4, an FPGA storage module 5, an MCU control module 6, an LCD display module 7, and an AC / DC switching power supply module 8. There are two signal conditioning circuits 1, the input signals of which are input by channel 1 and channel 2, respectively, and the outputs of the two signal conditioning circuits 1 are both connected to the ADC acquisition module 4. Such as image 3 As shown, the signal conditioning circuit 1 includes a single-stage attenuation module 11, a vertical shift module 12, and a high-speed broadband VGA amplifying module 13, which are connected in sequence. The single-stage attenuation module 11 is connected to the channel input signal of the oscilloscope, and the high-speed broadband VGA amplifying modul...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): G01R13/00H02M7/08
Inventor 陈晓刚
Owner QINGDAO HANTEK ELECTRONICS
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