Diagnostic apparatus for an electronic controller

Boots – shoes – and leggings

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Details

36455101, 364579, G05B 2300, G05B 2302

Patent

active

054635594

ABSTRACT:
A portable electronic apparatus tests and diagnoses an electronic controller of a machine. The electronic apparatus includes an AC voltage detection means for sequentially detecting at least one high level AC voltage signal generated by at least one electronic controller output. A converter converts the at least one high level AC voltage signal to at least one low level DC voltage signal which simulates a low level contact closure input. A means is provided which sequentially inputs the at least one low level DC voltage signal to a low level DC voltage input of the electronic controller for detection by the electronic controller. A generator generates at least one analog voltage signal which simulates at least one known, fixed value operating parameter of the machine. A means is provided which inputs the at least one analog voltage signal to a predetermined electronic controller input for detection by the electronic controller. An indicator sequentially indicates the detection of the at least one high level AC voltage signal, the detection of the at least one low level DC voltage signal, and the detection of the at least one analog voltage signal.

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patent: 5182755 (1993-01-01), Sekiguchi et al.

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