| 信号源失真对波形记录仪动态有效位数评价的影响(英文) |
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| 引用本文： | 梁志国,沈文,朱济杰.信号源失真对波形记录仪动态有效位数评价的影响(英文)[J].南京航空航天大学学报(英文版),1997(2). |
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| 作者姓名： | 梁志国 沈文 朱济杰 |
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| 作者单位： | 长城计量测试技术研究所 北京100095
(梁志国，沈文)，北京航空航天大学 北京100083(朱济杰) |
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| 摘 要： | 波形记录仪和数据采集系统等设备的动态有效位数评价中,大都假定所用正弦波信号源无任何失真.当信号源具有噪声或谐波失真时,给评价结果将带来多大的影响,尚无确切的结论,这使得对有效位数评价结果无法进行量值溯源.本文从能量守衡角度,阐述了信号源噪声失真对波形记录仪动态有效位数评价结果的影响,同时给出了由输入信号源噪声和谐波失真带来影响的修正关系式,以及在给定误差限度下,信号源失真度选择原则的关系式。
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| 关 键 词： | 波形发生器 数据采集 评价 有效位数 波形测量 |
INFLUENCE AND CORRECTION OF SIGNAL SOURCE DISTORTION TO EVALUATION OF EFFECTIVE BITS OF WAVEFORM RECORDERS |
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| Liang Zhiguo Zhu Jijie Shen Wen.INFLUENCE AND CORRECTION OF SIGNAL SOURCE DISTORTION TO EVALUATION OF EFFECTIVE BITS OF WAVEFORM RECORDERS[J].Transactions of Nanjing University of Aeronautics & Astronautics,1997(2). |
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| Authors: | Liang Zhiguo Zhu Jijie Shen Wen |
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| Abstract: | In most effective bits evaluation of waveform recorders, the prerequisite is that there is no signal source distortion, or the distortion can be neglected. But when the distortion can be neglected or how it affects the evaluation when it can't be neglected it is not determined yet. In this paper, the influence of signal source distortion to the evaluation of the effective bits of waveform recorders is discussed, then, the correction method of the effective bits error caused by the distortion influence is given. Finally , the error limit of the effective bits is given and how to selecte the calibrator is introduced. In the end , some simulation results of the new method in test are described. |
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| Keywords: | waveform generators data acquisition evaluation effective bits waveform measurement |
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