Accession Number : AD0775442

Title :   Analog-to-Digital Converter Evaluation by Digital Computer Analysis of Recorded Output. Volume I.

Descriptive Note : Interim technical rept. 18 May 73-15 Feb 74,

Corporate Author : ALABAMA UNIV HUNTSVILLE

Personal Author(s) : Polge,Robert J. ; Callas,Louis , Jr. ; Bhagavan,B. K. ; McKee,Edward R. , Jr

Report Date : FEB 1974

Pagination or Media Count : 125

Abstract : Dynamic performance of an A/D converter cannot be assessed by conventional tests since they employ low frequency inputs. In this report, a digital computer procedure is developed to determine the presence and extent of errors due to time jitter, nonlinearity, gain, quantization and locked bits. The procedure is based on discrete power spectrum analysis of recorded outputs of the A/D converter using weighted or non-weighted sine wave input. A computer program is developed to compute the estimated power spectrum starting from discrete records of a signal and is used to show that a sine wave must be weighted to insure a narrow bandwidth. (Modified author abstract)

Descriptors :   *Analog to digital converters, *Signal processing, *Information theory, *Radar, Power spectra, Quantization, Fourier transformation, Sampling, Computer programs, FORTRAN, Digital simulation

Subject Categories : Computer Programming and Software
      Computer Hardware
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE