Eight Channel Scanner and Timing Controller for Physiological Data Acquisition

Abstract

A system is described which enables the sequential conversion into digital form, and printing of punching on paper tape of up to eight channels of physiological data. A control unit allows the selection of acquisition-window time for each successive channel of data, programs the measurement parameters, and switches in the appropriate signal line. The system will accept mixed analog data, i.e. continuous slowly - varying signals (ECG, EEG, temperature, etc.) as well as pulse data (action potentials, etc.), and is capable of direct analog-to-digital conversion, or of the counting functions: totalizing, time interval between pulses, period, etc. The basic DAS components are standard Hewlett-Packard instruments. The controller is assembled from Digital Equipment Corporation M-series digital modules.