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Digital storage oscillograph with very high waveform capturing rate

A waveform capture rate and digital storage technology, applied in the direction of digital variable display, etc., can solve problems such as insufficient waveform capture rate, reduced test efficiency, and inability to meet real-time test application requirements, so as to improve waveform capture rate and increase transient abnormalities The probability of signal and the effect of improving test efficiency

Active Publication Date: 2008-10-01
UNI TREND TECH (CHINA) CO LTD
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Problems solved by technology

Therefore, 99% of the waveform details will be missed during the blind time, and the waveform capture rate is insufficient, which greatly reduces the test efficiency. In many cases, it cannot meet the requirements of real-time test applications.

Method used

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  • Digital storage oscillograph with very high waveform capturing rate
  • Digital storage oscillograph with very high waveform capturing rate
  • Digital storage oscillograph with very high waveform capturing rate

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Embodiment Construction

[0017] The following describes preferred specific embodiments of the present invention in conjunction with the accompanying drawings. It is to be noted that similar components are given similar reference numerals even though they appear in different drawings. In the following description, when a detailed description of known functions and designs employed may obscure the subject matter of the present invention, these descriptions will be omitted here.

[0018] figure 1 It is a block diagram of a traditional digital storage oscilloscope. In the figure, after the input signal is conditioned by the signal conditioning module 1, the output amplitude is within a certain range and is suitable for the ADC conversion module 2 to perform data sampling. Under the control of the trigger and time base circuit 3, the waveform data sampled by the ADC conversion module 2 Send it to the cache in the acquisition memory 4.

[0019] After completing a waveform data collection, the microproces...

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Abstract

The present invention discloses a digital storage oscillograph which has a very high waveshape catching rate. A test signal is inputted and is transmitted to an ADC converting module for sampling after regulation, and is transmitted to a caching of a collecting memorizer under the controlling of triggering and time-base circuit. When a one-time waveform collection is completed, a parallel coprocessor collects data and maps to a waveshape lattice data corresponding with the lattice of the display screen, and starts a new round of collection and mapping when the mapping is completed. At the same time, a microprocessor executes the management operation, and when a timing refreshing time of the display screen is obtained, a display refreshing control logic is instantaneously activated for automatically combining the waveshape lattice data with lattice data in the display memorizer and updating the display of the display screen. The invention adopts a framework that a signal waveform collecting procession and the micro-processor operate parallelly to free the micro-process from the burdensome waveshape processing and display. The time of blind zone is reduced and the catching rate of waveshape is increased. The probability for discovering the transient abnormal signal and the test efficiency are increased.

Description

technical field [0001] The invention relates to a digital storage oscilloscope, in particular to a digital storage oscilloscope with a very high waveform capture rate Background technique [0002] With the development of digital signal processing technology, the research on time-domain signal analysis technology based on high-speed sampling is getting more and more in-depth, and the digital time-domain test instrument has also been developed rapidly. As a typical time-domain test instrument, digital storage oscilloscope has obtained widely used. [0003] The waveform capture rate is one of the important indicators for evaluating the performance of a digital storage oscilloscope. The so-called "waveform capture rate" refers to the number of waveforms captured and displayed by the digital oscilloscope per unit time. Insufficient waveform capture rate will make it impossible to find most transient and occasional signals, let alone signal jitter analysis and eye diagram analys...

Claims

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Application Information

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IPC IPC(8): G01R13/02
Inventor 曾浩张沁川邱渡裕滕志超
Owner UNI TREND TECH (CHINA) CO LTD
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