Equivalent Sampling Oscilloscope with External Delay Embedded System

The internal delay methods for sequential equivalent sampling are widely used in the digital storage oscilloscope and limited completely by maximum operating frequency of embedded system. A new external delay technology for equivalent sampling oscilloscope is presented in this paper. The technology is based on the external programmable delay chips, which provide much shorter delay time for equivalent sampling rate as well as much higher operating frequency. With real time sampling and equivalent time sampling, the embedded system could perform rapid and effective measurement for the periodic signal which is either fast-varying or slow-varying and also be able to take real time sampling to the single-shot signals.

[1]  Gordon W. Roberts,et al.  70-GHz Effective Sampling Time-Base On-Chip Oscilloscope in CMOS , 2007, IEEE Journal of Solid-State Circuits.

[2]  Steven B. Warntjes.  Sustained Sample Rate in Digital Oscilloscopes , 1997 .

[3]  R. W. Young.  Applying the IEEE-1057 draft standard to calibration of equivalent-time sampling oscilloscopes , 1993, 1993 IEEE Instrumentation and Measurement Technology Conference.

[4]  He Zhiqiang,et al.  An Embedded Virtual Digital Storage Oscilloscope with 1GSPS , 2007, 2007 8th International Conference on Electronic Measurement and Instruments.

[5]  W. Gans.  The Measurement and Deconvolution of Time Jitter in Equivalent-Time Waveform Samplers , 1983, IEEE Transactions on Instrumentation and Measurement.

[6]  H. K. Schoenwetter.  Recent developments in digital oscilloscopes , 1989, 6th IEEE Conference Record., Instrumentation and Measurement Technology Conference.

[7]  Wu Jian-jun.  Equivalent random sampling technique's FPGA simulation , 2009 .

[8]  Jorge L. Aravena,et al.  A 1 GHz data acquisition system for repetitive waveforms , 1990, IEEE Proceedings on Southeastcon.

[9]  Huang Wei.  The Design of Random Equivalent Sampling Module Based on FPGA , 2009 .

[10]  Yijiu Zhao,et al.  The Research and Application of Random Sampling in Digital Storage Oscilloscope , 2009, 2009 IEEE Circuits and Systems International Conference on Testing and Diagnosis.

[11]  Li Peng.  Design method of triple speed ethernet based on Altera FPGA , 2009 .

[12]  Houjun Wang,et al.  Research on a method to improve the waveform acquire rate of DSO , 2009, 2009 9th International Conference on Electronic Measurement & Instruments.

[13]  D. Henderson,et al.  Calibration of fast sampling oscilloscopes , 1990 .

[14]  Wang Yue-qiu.  Equivalent Circuit Design Based on CPLD , 2007 .

[15]  Guo Shize,et al.  A novel equivalent sampling method using in the digital storage oscilloscopes , 1994, Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9).

[16]  R. Scott Brunton.  High-Sample-Rate Multiprocessor-Based Oscilloscopes , 1997 .