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Digital oscilloscope capable of displaying waveforms of equivalent sampling in raster display and setting method of equivalent sampling points thereof

A raster display, equivalent sampling point technology, applied in the direction of digital variable display, etc., can solve problems such as large amount of calculation, and achieve the effect of realistic connection relationship and easy implementation.

Active Publication Date: 2011-06-29
RIGOL
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Problems solved by technology

[0010] An object of the present invention is to overcome the problem of large amount of calculation in the prior art, and to provide a digital oscilloscope that can display equivalent sampling waveforms in a raster display

Method used

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  • Digital oscilloscope capable of displaying waveforms of equivalent sampling in raster display and setting method of equivalent sampling points thereof
  • Digital oscilloscope capable of displaying waveforms of equivalent sampling in raster display and setting method of equivalent sampling points thereof
  • Digital oscilloscope capable of displaying waveforms of equivalent sampling in raster display and setting method of equivalent sampling points thereof

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Embodiment Construction

[0055] In order to further illustrate the oscilloscope capable of setting equivalent sampling points in the raster display and the method for setting equivalent sampling points according to the present invention, the preferred embodiments selected by the present invention will be introduced below in conjunction with the accompanying drawings.

[0056] The selected preferred embodiment of the present invention has adopted digital oscilloscope 200, with reference to figure 2 , the digital oscilloscope 200 includes an A / D conversion module 201 , a trigger module 202 , an acquisition memory 203 , a buffer memory 204 , a process controller 205 , a trace memory 206 , and a raster display 208 .

[0057] Wherein, the A / D conversion module 201 is used for digitally sampling the input analog voltage signal S, and the data obtained by each sampling is stored in the acquisition memory 203 in a manner corresponding to data and address, forming a data address pair. Each of the data address...

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Abstract

The invention relates to a digital oscilloscope capable of displaying waveforms of equivalent sampling in a raster display and a setting method of equivalent sampling points thereof. A new data address pair and an old data address pair are compared, when the data of the two pairs are different and the difference value is smaller than a predetermined value, a pixel corresponding to the data in the new data address pair is set as a new sampling point, and a pixel corresponding to the old data address pair and pixels between the pixel corresponding to the old data address pair and the new sampling point are set as auxiliary sampling points on the raster display. In virtue of the jitter characteristic of the sample data, small lines formed through the connection of the new sampling point and the auxiliary sampling points is established, and in virtue of the small lines and the visual staying phenomenon generated when the displayed traces of the waveforms are refreshed at a higher speed, a user can see the mutual connection relationship of the sampling points at two different rows on the raster display. The digital oscilloscope capable of displaying waveforms of equivalent sampling in the raster display and the setting method of equivalent sampling points thereof have the characteristics of simplicity and facilitation of realization, moreover, the connection relationship between the two adjacent sampling points can be established more realistically.

Description

technical field [0001] A digital oscilloscope capable of displaying equivalent sampling waveforms in a grating display and a method for setting equivalent sampling points of the present invention relate to the field of measuring equipment that expresses measured electrical variables in a waveform display mode, and in particular relates to the field of measuring equipment with equivalent The sampling function of the digital oscilloscope field. Background technique [0002] A digital oscilloscope is a commonly used measuring device. It uses an analog-to-digital conversion circuit to realize digital sampling of the input analog voltage signal, and then saves the digital sampling result in the data acquisition memory for further data processing and display in the form of a waveform. [0003] There are two main methods for digital oscilloscopes to realize waveform sampling, implementing sampling and equivalent sampling. [0004] Among them, real-time sampling mainly relies on th...

Claims

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Application Information

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IPC IPC(8): G01R13/02
Inventor 王悦王铁军李维森
Owner RIGOL
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