Excavating
Patent
1991-05-01
1994-03-08
Beausoliel, Jr., Robert W.
Excavating
371 377, H03M 1300
Patent
active
052933873
ABSTRACT:
A method is described which increases the diagnostic resolution of a fault dictionary 130 used by automated test equipment (ATE) to determine a failed device in a unit under test 120. To achieve the goal of better diagnostic resolution, the method of the present invention first uses a combination of strategies to generate different fault syndromes. If all generated fault syndromes are not the same, then only "possible" fault detection data in the fault dictionary 130 is then used to analyze the syndromes. If all fault syndromes are the same, then only "hard" detection data in the fault dictionary is used to analyze the fault syndromes. Fault resolution is increased by treating the two categories of detection data separately, because there are fewer possible faults in each category than in the situation wherein both fault types are merged.
REFERENCES:
patent: 3649910 (1972-03-01), Vinsani et al.
patent: 4228537 (1980-10-01), Henckels et al.
patent: 4242751 (1980-12-01), Henckels et al.
Vin Ratford; "Fault Dictionary Diagnostics: How Well Do They Work?"; Proceedings, ATE East Conference, Jun. 23-26, 1986; pp. III-14 to III-23.
Vin Ratford and Paul Keating; "Integrating Guided Probe and Fault Dictionary: An Enhanced Diagnostic Approach"; 1986 International Test Conference; pp. 304-311.
Beausoliel, Jr. Robert W.
De'cady Albert
Hewlett--Packard Company
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