A Digital Oscilloscope Supporting Eye Diagram Reconstruction
A technology of digital oscilloscope and digital waveform, applied in the direction of digital variable display, etc., to achieve the effect of reducing information storage and improving efficiency
Active Publication Date: 2022-07-01
SHENZHEN CITY SIGLENT TECH
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Problems solved by technology
[0006] The technical problem mainly solved by the present invention is how to reasonably set the unit structure of data processing in the digital oscilloscope, so as to reduce the processing burden of a single processing unit, and recover the clock data quickly in the eye diagram reconstruction, thereby improving the accuracy of the eye diagram reconstruction. efficiency
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[0023] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments have used associated similar element numbers. In the following embodiments, many details are described so that the present application can be better understood. However, those skilled in the art will readily recognize that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, these are described in detail. The relevant operations are not necessary, and they can fully understand the relevant operations according to the descriptions in the specification and general ...
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A digital oscilloscope supporting eye diagram reconstruction mainly includes a logic processing circuit, a central processing unit, a memory and a display; the memory is used to store the acquired data of the input signal; the logic processing circuit is used to construct a digital waveform according to the acquired data, and The digital waveform performs waveform search to obtain the statistical information of each edge event in the digital waveform, and sends the statistical information to the central processing unit to obtain the feedback configuration information, and superimposes the display position of each bit waveform configured in the configuration information. The eye diagram corresponding to the input signal; the central processing unit is used to recover the clock data according to the statistical information of each edge event, configure the display position of each bit waveform, form the configuration information, and feed the configuration information to the logic processing circuit. The technical solution of the present application can allow the logic processing circuit and the central processing unit to respectively undertake part of the operation processing tasks, which is beneficial to improve the efficiency of eye diagram reconstruction.
Description
technical field [0001] The invention relates to the technical field of oscilloscopes, in particular to a digital oscilloscope supporting eye diagram reconstruction. 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 optimal input range of the analog-to-digital converter (ADC), the ADC collects and quantizes the analog input signal, and the field programmable logic gate array (FPGA) controls the memory according to the trigger conditions. access data. Due to the limitation of ADC sampling rate and other factors, the information capacity that can be observed in the real-time sampling mode of the digital storage oscilloscope is very limited, and it is u...
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IPC IPC(8): G01R13/02
CPCG01R13/02
Inventor 李振军周旭鑫郑文明
Owner SHENZHEN CITY SIGLENT TECH