High refresh rate waveform synthesizer and high refresh rate oscilloscope

Abstract

The embodiment of the invention discloses a high-refresher-rate waveform synthesizer used for improving the waveform refresh rate WRR through shortening Tmap, improving the capacity of a digital oscilloscope to grab waveform details and optimizing performances of the digital oscilloscope. The high-refresher-rate waveform synthesizer disclosed by the embodiment of the invention comprises a data distribution module, a storage module, a synthesizing module and a data integrating module, wherein the storage module is composed of n storage sub-modules; the synthesizing module is composed of n synthesizing sub-modules; the n storage sub-modules correspond to the n synthesizing sub-modules and are connected in parallel; the storage sub-modules are used for storing waveform data; the synthesizing sub-modules are used for synthesizing collected data and the waveform data and writing obtained fresh waveform data into the corresponding storage sub-modules; the waveform data are read from the corresponding storage sub-modules. Furthermore, the embodiment of the invention provides a high-refresher-rate oscilloscope.

Description

technical field [0001] The invention relates to the field of oscilloscopes, in particular to a high refresh rate waveform synthesizer and a high refresh rate oscilloscope. Background technique [0002] Waveform refresh rate (WRR) is one of the important indicators for judging the performance of digital oscilloscopes. It directly reflects the ability of digital oscilloscopes to capture waveform details. The higher the waveform refresh rate, the stronger the ability to capture abnormalities. [0003] At present, digital oscilloscopes generally store the collected or superimposed waveform data in external memory. Whenever the synthesizer in the digital oscilloscope synthesizes the waveform data, it needs to read the waveform data from the external memory and then synthesize them. Finally, write the synthesized waveform data into the external memory again. The formula for the waveform refresh rate is: [0004] [0005] T acq Acquisition time is the time required to acquire...

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Problems solved by technology

[0012] However, from figure 1 It can be seen from the figure that the synthesizer of the existing digital oscilloscope needs to perform the operation of "read-modify-write" from the outgoing static memory to synthesize the waveform data, and can only map one waveform data at a time, which limits increases the synthesis efficiency of the synthesizer, that is, leads to T map The time is too long, it is difficult to shorten the T map To improve the waveform refresh rate WRR, this has become a bottleneck in the improvement of the waveform refresh rate of the digital oscilloscope, and a synthesizer that improves the waveform refresh rate is urgently needed to solve the problem.

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