计量学报2018，Vol.39Issue(2)：268-271,4.DOI:10.3969/j.issn.1000-1158.2018.02.26
数字示波器大触发延迟时间的变频测量方法
A Novel Multi-frequency Measurement Method for Large Trigger Delay of Digital Oscilloscopes
梁志国 1杨仁福2
作者信息
- 1. 北京长城计量测试技术研究所计量与校准技术重点实验室,北京100095
- 2. 北京无线电计量测试研究所计量与校准技术重点实验室,北京100854
- 折叠
摘要
Abstract
Aiming at the large trigger delay of digital oscilloscope,a novel multi-frequency measurement method is presented.By using the period of sinusoidal as standard,the large trigger delay is divided into two parts,one part is just consist of many periods of sine wave,another part includes the partial period of sine wave.The partial period part can be measured through phase difference method.The integer periods part can be measured by using different frequency stimulation,of which the difference of the trigger delay value at different signal frequency has the same common period,and one can judge the minimum common period from three frequency sampling series.Then,the minimum common period can be used to calculate the number of periods.Finally,through composing of the two parts,the large trigger delay is gotten.The correctness and feasibility are proved by some experiments on digital oscilloscope,and the method can be used to the measurement and calibration of large trigger delay of digital oscilloscopes.关键词
计量学/大触发延迟/变频测量/数字示波器/校准Key words
metrology/large trigger delay/multi-frequency measurement/digital oscilloscope/calibration分类
通用工业技术引用本文复制引用
梁志国,杨仁福..数字示波器大触发延迟时间的变频测量方法[J].计量学报,2018,39(2):268-271,4.
