External device identification system

Details External device identification system External device identification system

G - Physics

01

M

73/169, 354/24

G01M 15/00 (2006.01) F02P 17/00 (2006.01)

Patent

CA 1165879

Abstract of the Disclosure An identification circuit fox use in conjunction with an automobile engine analyzer system having a plurality of external probes is disclosed. The various probes and other external devices associated with the automobile engine analyzer each include a passive circuit element, typically a resistor. When the probe or other external device is connected to the analyzer, the passive circuit element completes the identification circuit within the analyzer. By applying a predetermined signal to the circuit, the particular probe or device connected may be identified by examining a particular circuit characteristic, such as the voltage drop across a second resistor of known resistance within the circuit.

392659

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