Acculogic develops state-of-the-art testers for short-batch electronic circuit boards (ECBs). The order in which the required tests are performed affects the amount of shuttle and probe movements required between the tests, and this affects the overall efficiency of the test procedure. Unique characteristics of the problem (e.g. the ability to move one set of probes to the next test location while another set of probes is performing a test) make the problem too large and too complex to be solved with most traditional combinatorial optimization and heuristic search techniques (e.g.
The flying probe test is a standard method used to test circuit boards for defectiveness, using probes that are able to move and access various test points on the board. A circuit board consists of many electrical circuits, each of which has inputs and outputs. During a test, a probe is first placed on the input test point of a circuit, as it provides a voltage or current source to that circuit. Another probe is used to measure the corresponding output, monitoring whether or not the board produces expected values.
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