In this project we completed the design of a digital data acquisition board. This board provided for the measurement of time between pulses of the frequency modulated pulse trains for eight input channels. Channel arbitration logic was developed and on-board first in, first outs (FIFOs) were incorporated for storing the acquired data. The board had a fully compliant IBM-PC bus interface and form factor. Software was developed to compute the fast Fourier transform (FFT) of the acquired data, display the FFT on a CRT and print out the FFT plots. This system was a development tool used to analyze frequency modulated pulse trains in the frequency domain. It enables input signals from various sources to be analyzed, such as torsion gear vibration (in press drive trains) and encoder signal modulations.

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