Method and apparatus for automatically adjusting the hold-off time of a DSO

US10823762B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Qinchuan Zhang · Chengdu, CN
• Feng Tan · Kunming, CN
• Huiqing Pan · Chengdu, CN
• Hao Zeng · Sichuan, CN
• Luonan Zheng · Chengdu, CN

Key dates

• Filing date: Jun 12, 2018
• Grant date: Nov 3, 2020
• Expiry date: Feb 5, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R13/0254
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention provides a method and apparatus for automatically adjusting the hold-off time of a DSO based on real-time cycle measurements of the system trigger signal: obtaining a cycle sequence by measuring the system trigger signal, the maximum cycle and minimum cycle, then judging the difference of the maximum cycle and minimum cycle: if the difference is greater than a threshold set by user, setting the hold-off time to the maximum cycle, the minimum cycle or the median cycle, then returning; otherwise terminating the adjustment of the hold-off time. At this point, the hold-off time is correctly set. Therefore, the present invention reduces the complexity and time consumption of the hold-off adjustment, and allows the test signal to be quickly and stably displayed on screen of DSO, meanwhile, which makes the trigger adjustment of DSO more convenient.