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IJPAP Vol.45(03) [March 2007]  >

Title: Data acquisition system using Matlab for deep level transient spectroscopy studies
Authors: Reddy, P Narasimha
Kumar, A Ashok
Reddy, K Jagadeswara
Reddy, S Venkatramana
Keywords: Data acquisition system
Analog to digital converter
Issue Date: Mar-2007
Publisher: CSIR
IPC CodeG01J 3/28
Abstract: A microcontroller (AT89S8252) based data acquisition system has been developed for acquiring and processing the data from a home built deep level transient spectroscopy (DLTS)system. User friendly menu driven software has been developed in Matlab for selection of different DLTS measurement modes, data acquisition modes, channels (four channels) selection and number of data points on a single transient. It can be operated in two data acquisition modes namely scan mode and continuous mode. The scan mode is used to perform online analysis and continuous mode for offline data analysis. The developed software is also useful to operate the DLTS system in any one of the two operating modes namely boxcar mode or high resolution mode. The versatility of the data acquisition system is that the software developed can be used to obtain I-V characteristics using commercially available source meters. The paper also deals with the different wavelet decomposition methods for DLTS data acquisition and processing.
Page(s): 204-209
ISSN: 0019-5596
Source:IJPAP Vol.45(03) [March 2007]

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