Oscillograph with double-capture function

Abstract

The invention discloses an oscillograph with a double-capture function. A user selects two time base gears by an upper computer; two different snap-shot coefficients are obtained by calculation and are simultaneously issued to corresponding modules; waveform data acquired and stored at a slow time base gear is used as main waveform data; waveform data obtained by carrying out acquisition and storage on the same data source at a rapid time base gear is used as capture waveform data; a main waveform and a capture waveform are simultaneously displayed by the upper computer. According to the invention, the same data source can be simultaneously captured by adopting different sampling rates according to double time base gears set by the user so as to meet the requirement of the user for diversification of the observation waveforms.

Description

technical field [0001] The invention belongs to the technical field of oscilloscope recorders, and more specifically relates to an oscilloscope recorder with dual capture functions. Background technique [0002] With the rapid development of modern electronic technology and information processing, the acquisition and display functions of modern test instruments are becoming more and more diverse, especially powerful digital oscilloscopes, which can integrate waveform acquisition, multimeter functions, signal generators, spectrum analyzers and other functions In one, and its sampling rate and bandwidth have been increased rapidly, it can measure and collect electrical signals and physical signals in many fields, and a friendly human-computer interface allows users to observe waveform changes from multiple angles, but in domestic oscilloscopes The acquisition and display system still has the following defects: [0003] (1) During the long-term reliability test, when the user ...

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Problems solved by technology

[0003] (1) During the long-term reliability test, when the user needs to use a low sampling rate to observe the trend waveform, and at the same time needs to use a high sampling rate to capture high-speed burst phenomena, two different sampling rates are required to meet the data requirements. Capture requirements, and record the collected data for later analysis, conventional digital oscilloscopes cannot meet such requirements

[0004] (2) In the current digital oscilloscope, although dual time bases can be used to realize simultaneous acquisition of waveforms at two different sampling rates, there is a lack of combining the two waveforms under dual time bases for analysis and comparison, which cannot satisfy users Multiple needs

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