William F Helms

US Patent:

42570026, Mar 17, 1981

Filed:

Dec 11, 1978

Appl. No.:

5/968820

Inventors:

William E. Helms - Orange CA
Jack W. Adams - Alta Loma CA

Assignee:

Thomas & Betts Corporation - Raritan NJ

International Classification:

G01R 1900

US Classification:

324 66

Abstract:

Apparatus is disclosed for storing the circuit conditions existing between a plurality of points established by the conductors of a "known" multiconductor harness and for comparing the circuit conditions existing between a plurality of points established by the conductors of a multiconductor harness to be tested with the circuit conditions of the conductors of the said known multiconductor harness. The apparatus comprises storage means for storing information representative of circuit conditions existing between the plurality of points established by the conductors of the known multiconductor harness, testing means for applying a signal to the points of the harness being examined, detection means responsive to the signal for identifying the existence of circuit conditions between the plurality of points of the harness being examined, transfer means responsive to the detection means for transferring information representative of the circuit conditions of the conductors of the known multiconductor harness to the storage means, comparing means for comparing the circuit conditions existing between the plurality of points as established by the conductors of the known harness with the circuit conditions existing between the plurality of points as established by the conductors of the harness to be tested, signaling means responsive to the comparing means for indicating the results of the operation performed by the comparing means, and control means for selectively operating the transfer means when the conductors of the known harness are connected to the aforementioned points and for selectively operating the comparing means and the signaling means when the conductors of the multiconductor harness to be tested are connected between the aforementioned points.