Data input or output apparatus incorporating functional testing

Details Data input or output apparatus incorporating functional testing Data input or output apparatus incorporating functional testing

G - Physics

01

R

324/58.1

G01R 31/00 (2006.01) G01R 31/28 (2006.01) G06F 11/22 (2006.01)

Patent

CA 1194121

16 ABSTRACT: Data input or output apparatus incorporating functional testing. For functional testing, all electromechanical elements of a data input or output apparatus are indivi- dually and successively activated. The current supplied by a power supply is measured at least as one instant and the measurement value is compared with a reference value. Thus, the power supply lead need include only a (possibly switchable) measuring element and a customary A/D conver- ter and possibly a measuring range controller, the further functional testing being realized by means of the digital units already present. Due to the small number of elements on the one hand, the reliability of the apparatus is not affected to any significant degree, while on the other hand the functional testing is thus realized in a very inexpensive manner.

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