A seamless acquisition digital storage oscilloscope with three-dimensional waveform display

In traditional digital storage oscilloscope (DSO), sampled data need to be processed after each acquisition. During data processing, the acquisition is stopped and oscilloscope is blind to the input signal. Thus, this duration is called dead time. With the rapid development of modern electronic syst...

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Main Authors: Yang, Kuojun, Tian, Shulin, Zeng, Hao, Qiu, Lei, Guo, Lianping
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/104124
http://hdl.handle.net/10220/19502
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1041242020-03-07T14:00:37Z A seamless acquisition digital storage oscilloscope with three-dimensional waveform display Yang, Kuojun Tian, Shulin Zeng, Hao Qiu, Lei Guo, Lianping School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering In traditional digital storage oscilloscope (DSO), sampled data need to be processed after each acquisition. During data processing, the acquisition is stopped and oscilloscope is blind to the input signal. Thus, this duration is called dead time. With the rapid development of modern electronic systems, the effect of infrequent events becomes significant. To capture these occasional events in shorter time, dead time in traditional DSO that causes the loss of measured signal needs to be reduced or even eliminated. In this paper, a seamless acquisition oscilloscope without dead time is proposed. In this oscilloscope, three-dimensional waveform mapping (TWM) technique, which converts sampled data to displayed waveform, is proposed. With this technique, not only the process speed is improved, but also the probability information of waveform is displayed with different brightness. Thus, a three-dimensional waveform is shown to the user. To reduce processing time further, parallel TWM which processes several sampled points simultaneously, and dual-port random access memory based pipelining technique which can process one sampling point in one clock period are proposed. Furthermore, two DDR3 (Double-Data-Rate Three Synchronous Dynamic Random Access Memory) are used for storing sampled data alternately, thus the acquisition can continue during data processing. Therefore, the dead time of DSO is eliminated. In addition, a double-pulse test method is adopted to test the waveform capturing rate (WCR) of the oscilloscope and a combined pulse test method is employed to evaluate the oscilloscope's capture ability comprehensively. The experiment results show that the WCR of the designed oscilloscope is 6 250 000 wfms/s (waveforms per second), the highest value in all existing oscilloscopes. The testing results also prove that there is no dead time in our oscilloscope, thus realizing the seamless acquisition. Published version 2014-06-02T04:31:44Z 2019-12-06T21:26:58Z 2014-06-02T04:31:44Z 2019-12-06T21:26:58Z 2014 2014 Journal Article Yang, K., Tian, S., Zeng, H., Qiu, L., & Guo, L. (2014). A seamless acquisition digital storage oscilloscope with three-dimensional waveform display. Review of Scientific Instruments, 85(4), 045102-. 0034-6748 https://hdl.handle.net/10356/104124 http://hdl.handle.net/10220/19502 10.1063/1.4869871 en Review of scientific instruments © 2014 AIP Publishing LLC. This paper was published in Review of Scientific Instruments and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: http://dx.doi.org/10.1063/1.4869871.  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Yang, Kuojun
Tian, Shulin
Zeng, Hao
Qiu, Lei
Guo, Lianping
A seamless acquisition digital storage oscilloscope with three-dimensional waveform display
description In traditional digital storage oscilloscope (DSO), sampled data need to be processed after each acquisition. During data processing, the acquisition is stopped and oscilloscope is blind to the input signal. Thus, this duration is called dead time. With the rapid development of modern electronic systems, the effect of infrequent events becomes significant. To capture these occasional events in shorter time, dead time in traditional DSO that causes the loss of measured signal needs to be reduced or even eliminated. In this paper, a seamless acquisition oscilloscope without dead time is proposed. In this oscilloscope, three-dimensional waveform mapping (TWM) technique, which converts sampled data to displayed waveform, is proposed. With this technique, not only the process speed is improved, but also the probability information of waveform is displayed with different brightness. Thus, a three-dimensional waveform is shown to the user. To reduce processing time further, parallel TWM which processes several sampled points simultaneously, and dual-port random access memory based pipelining technique which can process one sampling point in one clock period are proposed. Furthermore, two DDR3 (Double-Data-Rate Three Synchronous Dynamic Random Access Memory) are used for storing sampled data alternately, thus the acquisition can continue during data processing. Therefore, the dead time of DSO is eliminated. In addition, a double-pulse test method is adopted to test the waveform capturing rate (WCR) of the oscilloscope and a combined pulse test method is employed to evaluate the oscilloscope's capture ability comprehensively. The experiment results show that the WCR of the designed oscilloscope is 6 250 000 wfms/s (waveforms per second), the highest value in all existing oscilloscopes. The testing results also prove that there is no dead time in our oscilloscope, thus realizing the seamless acquisition.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Yang, Kuojun
Tian, Shulin
Zeng, Hao
Qiu, Lei
Guo, Lianping
format Article
author Yang, Kuojun
Tian, Shulin
Zeng, Hao
Qiu, Lei
Guo, Lianping
author_sort Yang, Kuojun
title A seamless acquisition digital storage oscilloscope with three-dimensional waveform display
title_short A seamless acquisition digital storage oscilloscope with three-dimensional waveform display
title_full A seamless acquisition digital storage oscilloscope with three-dimensional waveform display
title_fullStr A seamless acquisition digital storage oscilloscope with three-dimensional waveform display
title_full_unstemmed A seamless acquisition digital storage oscilloscope with three-dimensional waveform display
title_sort seamless acquisition digital storage oscilloscope with three-dimensional waveform display
publishDate 2014
url https://hdl.handle.net/10356/104124
http://hdl.handle.net/10220/19502
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