Accession Number : ADA141181

Title :   Spectral Averaging and Low-Frequency Sampling Modifications for the IQS 401 FFT (Fast Fourier Transform) Spectrum Analyzer.

Descriptive Note : Interim technical rept.,

Corporate Author : UTAH UNIV SALT LAKE CITY DEPT OF PHYSICS

Personal Author(s) : Smith,S W

PDF Url : ADA141181

Report Date : May 1984

Pagination or Media Count : 16

Abstract : The IQS 401 spectrum analyzer, a commercial addition to the Apple II & III personal computers, can be modified for low-cost power spectrum measurements of random noise signals and similar waveforms. The IQS BASIC control program is changed to perform low-frequency sampling, spectral averaging and spectrum scaling. External analog filtering must be provided on the lowest sampling rates; however, no change is made to the original IQS hardware. Resolution of 0.5 dB is obtainable from 0.0001 Hz to 20 kHz. (Author)

Descriptors :   *Spectrum analyzers, *Computer program verification, *Fast fourier transforms, Low frequency, Sampling, Modification, Low costs, Power spectra, Measurement, Noise(Electrical and electromagnetic), Signals

Subject Categories : Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE