Title :
Advance Oscilloscope Triggering
Author :
Khan, Shakeb A. ; Agarwala, A.K. ; Shahani, D.T. ; Alam, M. Mahfooz
Author_Institution :
Indian Inst. of Technol., New Delhi
fDate :
6/1/2007 12:00:00 AM
Abstract :
In this paper, we present an advanced triggering method for digital oscilloscopes for measurements involving complex waveforms that are challenging even today. Based on the associative-memory technique and on utilizing a new weighted-hamming-distance parameter, this technique is capable of providing stable oscilloscope triggering, even for complex waveforms where the commonly used voltage level triggering method fails to perform adequately. The proposed technique has been verified by exhaustive software simulations using Matlab and Xilinx foundation series softwares. Furthermore, the technique has been implemented and validated on a XCV300EPQ240 field-programmable gate array device and has given successful initial results using several different kinds of test waveforms
Keywords :
computerised instrumentation; content-addressable storage; digital storage oscilloscopes; field programmable gate arrays; trigger circuits; associative-memory technique; complex waveform; digital oscilloscopes; field-programmable gate array device; oscilloscope triggering method; software simulations; voltage level triggering method; weighted-hamming-distance parameter; Associative memory; Displays; Field programmable gate arrays; Hamming distance; Helium; MATLAB; Oscilloscopes; Testing; Trigger circuits; Voltage; Associative memory; complex waveform; field-programmable gate array (FPGA); oscilloscope triggering; weighted hamming distance (whd);
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2007.894198
