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Eye pattern reconstruction method for digital oscilloscope and storage medium

A digital oscilloscope and digital waveform technology, applied in the direction of digital variable display, digital variable/waveform display, instruments, etc., can solve the problems of multi-data clock recovery, increase the processing time of sampled data, and reduce the storage space of sampled data, etc. Achieve the effect of avoiding redundancy, improving overall efficiency, and reducing processing time

Active Publication Date: 2020-01-10
SHENZHEN CITY SIGLENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies in the existing technical solutions. In the process of reconstructing the high-speed digital eye diagram using the CPU, the sampled data needs to be processed serially, which will increase the time for processing the sampled data each time and reduce the eye. Efficiency of graph reconstruction; the external memory chip connected to the CPU needs to store not only the sampling data, but also the processing results of the data and keep the CPU software running, which will reduce the space used to store the sampling data. Unable to collect as much data as possible for clock recovery

Method used

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  • Eye pattern reconstruction method for digital oscilloscope and storage medium
  • Eye pattern reconstruction method for digital oscilloscope and storage medium
  • Eye pattern reconstruction method for digital oscilloscope and storage medium

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Embodiment 1

[0032] Please refer to image 3 , the present application discloses a method for reconstructing an eye diagram of a digital oscilloscope, which includes steps S100-S400, which will be described respectively below.

[0033] Step S100, acquiring the acquisition data of the input signal, and using the acquisition data to construct a digital waveform. The digital waveform here includes multiple edge events generated by rising edges and / or falling edges, and bit waveforms are formed between adjacent edge events.

[0034] It should be noted that the collected data can be composed of many data points, and the fluctuation state of the amplitude when each data point is distributed according to the sequence reflects the state of the digital waveform.

[0035] Step S200, performing a waveform search on the digital waveform to obtain statistical information of each edge event. For example, when performing a waveform search on a digital waveform, the event sequence and distribution posit...

Embodiment 2

[0083] Please refer to Figure 9 , in the technology of the eye pattern reconstruction method of the digital oscilloscope disclosed in the first embodiment, a digital oscilloscope 1 is also disclosed, which mainly includes: a first processing module 15, a waveform search module 16, a second processing module 17, a control display Module 18. Instructions are given below.

[0084] The first processing module 15 is used to obtain the collection data of the input signal and construct a digital waveform. The digital waveform here includes multiple edge events generated by rising edges and / or falling edges, and bit waveforms are formed between adjacent edge events. For the description of the functions of the first processing module 15, reference may be made to steps S150-S160 in the first implementation, which will not be repeated here.

[0085] The waveform search module 16 is connected to the first processing module 15, and is used for performing waveform search on the digital ...

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Abstract

The invention discloses an eye pattern reconstruction method for a digital oscilloscope and a storage medium. The method comprises the following steps that: the acquisition data of input signals are obtained, digital waveforms are obtained, wherein the digital waveforms comprise a plurality of edge events generated by a rising edge and / or a falling edge, and bit waveforms are formed between adjacent edge events; waveform search is performed on the digital waveforms, so that the statistical information of the edge events is obtained; clock data recovery is performed according to the statisticalinformation of each edge event, and the display position of each bit waveform is configured; and afterglow display is performed on each bit waveform one by one by utilizing the display positions of the bit waveforms, and superposing is performed, so that an eye pattern corresponding to the input signals is obtained. When waveform search is carried out on the digital waveforms, the acquisition data are preprocessed through a parallel processing mode, and therefore, the processing time of each frame of data is effectively shortened, and the overall efficiency of eye pattern reconstruction is improved.

Description

technical field [0001] The invention relates to the technical field of oscilloscopes, in particular to an eye pattern reconstruction method and a storage medium for digital oscilloscopes. Background technique [0002] Digital storage oscilloscope is one of the main instruments for testing and analyzing signals, and it is widely used in many industries such as information communication, high-energy physics, and medical electronics. The main working principle of the digital storage oscilloscope is that the signal conditioning circuit adjusts the input signal to the best input range of the analog-to-digital converter (ADC), the ADC collects and quantifies the analog input signal, and the field programmable logic gate array (FPGA) controls the memory according to the trigger condition access data. Due to the limitation of ADC sampling rate and other factors, the information capacity that can be observed by digital storage oscilloscopes in real-time sampling mode is very limited...

Claims

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Application Information

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IPC IPC(8): G01R13/02G01R13/36
CPCG01R13/0209G01R13/36
Inventor 李振军周旭鑫郑文明
Owner SHENZHEN CITY SIGLENT TECH