US 10,948,536 B2 · System for enhancing ATE fault isolation capability using a truth table based on a failure isolation matrix

Abstract

The invention is a truth table-based failure isolation matrix in an Automated Test Equipment (ATE) environment to enable the mapping of measured results and/or test outcomes to probable causes of failure (PCOF). The failure isolation matrix is hierarchical in that it applies to both individual tests as well as groups of tests. For each level in the hierarchy, columns represent individual outcomes verified against expected results to produce a resultant outcome and rows represent possible combinations of measurement outcomes or outcome vectors. For groups of tests, the measurement results represent the combined results of the individual tests within the test group. The resultant matrix is a pattern of vectors that can be pattern matched against prior history of result patterns to further improve the accuracy and narrow the scope of PCOF.

Claims25

Dependent claims

A default isolation matrix based system for an ATE, Automated Test Equipment, comprising:

a test sequence comprising a plurality of individual ATE tests, defining a test group for a unit under test, wherein each test results in an outcome indication as the test sequence progresses;
an outcome determination vector indicating a pass indication for the test group if all tests pass and a failure indication or if any one of the individual tests in the test group fails;
wherein the individual test passes and test failures form a matrix pattern of sets of test results;
and
a test group callout or decision corresponding to the outcome vector or vectors indicating a user configured value representing a group of components in the unit under test associated with a particular set of test results in the matrix pattern.

2 more elements

Dependencies are inferred from the claim text.

System for enhancing ATE fault isolation capability using a truth table based on a failure isolation matrix

Life of this patent

System for enhancing ATE fault isolation capability using a truth table based on a failure isolation matrix

Life of this patent

Abstract

Claims25