A New Portable, PC Based, USB Powered Dynamic Signal Analyzer

Charles Birdsong, Dactron Inc.
George Ma, Dactron Inc.
James Nieters, Dactron Inc.
Justin Tang, Dactron Inc.
Caine Yu, Dactron Inc.

Article comments

7 pages. Reprinted with permission from SAE. Paper number 2001-01-1587. Copyright © 2001 SAE International.

NOTE: At the time of publication, the author Charles Birdsong was not yet affiliated with Cal Poly.

Abstract

A new USB powered portable 4-channel real time Dynamic Signal Analyzer and its automotive applications are described. The design and architecture lend themselves to real time NVH measurements and analysis in the field, in-vehicle or on production lines. Built-in signal conditioning provides for direct sensor power while the embedded DSP provides for signal processing on-board. Performance and implementation of FFT, digital filters and order analyses are presented.