Design and Implementation of Random Sample Circuit in Digital Phosphor Oscilloscope

摘要：

The ever increasing demand for the high-speed,EMC digital design is putting forward higher challenges towards the oscilloscope. As the latest generation of oscilloscope,Digital Phosphor Oscilloscope (DPO) has become an all-purpose waveform acquisition and analyzing instrument. According to the Nyquist sampling theorem,the acquisition ability of DPO is constrained by the sampling rate. The random sampling technique could make up for this,which makes the whole system achieving a high equivalent sampling rate and temporal resolution. The design and implementation of a random sampling circuit in DPO is provided in this paper. The design could mainly be divided into two parts: Time measurement circuit and Waveform reconstruction circuit. The above design has already been used in the prototype of 1Gsps DPO and reaches an equivalent sampling rate of50Gsps,meets the performance requirements of the DPO system well.

关键词： Random Sampling Digital Phosphor Oscilloscope FPGA.

作者: Yang Ming Gao Lizhong Chang Bin

作者单位: School of Information Science and Engineering,Southeast University

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 608-611

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）