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Vol. 154, Issue 7, July 2013, pp. 217-222




Design of a New Random Equivalent Sampling Technology Based on Vernier Method
Mingjiang Shi, Zhang He

School of Electronic Engineering and Information, Southwest Petroleum University, Chengdu 610500, China
Tel.: 86+13880901973
E-mail: swpushi@126.com


Received: 10 May 2013   /Accepted: 19 July 2013   /Published: 31 July 2013

Digital Sensors and Sensor Sysstems


Abstract: Random equivalent sampling technology was used to solve the high cost of high speed data acquisition issue. Random equivalent sampling uses multi-sampling technology to convert high-frequency periodic or quasi-periodic signals to low-frequency ones. This technique while is based on the vernier caliper principle is realized by measuring the interval of the trigger point and the first sampling pulse of the next sampling period, the equivalent sampling rate can be up to 10 GSps. It includes the trigger clock generator module, the sampling clock generator module, the equivalent time sampling measurement module and the data storage module. This technique has highly practical value and has been applied to the portable digital Storage oscilloscope.


Keywords: Random equivalent sampling, Vernier Method, Trigger signal, Digital Storage Oscilloscope, Reconstructed waveform.


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