A low-error oscilloscope with improved preamplifier circuit

Abstract

The invention discloses a low-error oscilloscope with an improved pre-amplification circuit. The low-error oscilloscope comprises an attenuator, a pre-amplifier, a sampler, an analog-digital converter, a storage, a sampling clock, a time-base circuit, a crystal oscillator, a central processing unit, a displayer and an antenna module, wherein the attenuator, the pre-amplifier, the sampler, the analog-digital converter, the storage, the central processing unit and the displayer are sequentially connected. The analog-digital converter is connected with the sampling clock, the time-base circuit is connected with the sampling clock, the crystal oscillator and the central processing unit, and the central processing unit is connected with the antenna module. By the adoption of the central processing unit (CPU), the low-error oscilloscope is powerful in operational capability and processing function, the performance of the oscilloscope is enhanced, many expandable interfaces are additionally formed, the circuit of the sampling part is divided into the multiple modules which comprise the sampling clock, the time-base circuit, the crystal oscillator and the like, the functions are refined, errors of the internal circuit can be reduced easily, and the internal arrangement is more user-friendly.

Description

technical field [0001] The invention discloses a low-error oscilloscope with an improved preamplifier circuit, which belongs to the field of signal processing equipment. Background technique [0002] As a time-domain electronic measuring instrument, oscilloscopes are widely used in the field of measurement. Whether it is research and development, experimentation, training of electronic circuits and electronic information systems, or manufacturing, fault diagnosis, testing and other places, oscilloscopes can be seen everywhere. . [0003] With the continuous innovation and development of information and communication technology and the continuous introduction of various industry standards, the technical and environmental requirements for research and development, design and production of terminal products such as communication equipment, computers and consumer electronics are also getting higher and higher. Higher requirements are also put forward for the application of the ...

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Problems solved by technology

[0006] The patent number is 201210301583.2, and the patent name is an oscilloscope. This patent proposes a solution to the problems in the prior art, but the patent does not point out how to reduce the error of the displayed signal and propose corresponding solutions.

[0007] The patent number is 201410284448.0, and the patent name is an oscilloscope. This patent points out the problems existing in the oscilloscope of the prior art, but does not raise the problem of oscilloscope error, and does not expand the functions of the existing oscilloscope

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