A Dependency Matrix-Based Approach for Designing ATE Calibration Strategy

Wei Jiang, Qi Zhang

Abstract

In order to calibrate ATE (automatic test equipment) effectively and accurately, in this paper, a calibration strategy design approach based on dependency matrix for ATE is developed. According to the characteristics of information flow and logic relations which the trace chain of ATE included, the dependency matrix is derived to present the causal relationship between out-of-tolerance conclusion and calibration. Two weights are respectively defined using dependency matrix to select calibrations for detection and location of out-oftolerance conclusion. Calibration strategy tree is used for the presentation of the selected calibration operation and its order. With this approach, the calibration efficiency could be improved and the cost could be reduced significantly. Finally, we applied the approach to a practical ATE and the results are analyzed, so as to verify the effectiveness of the proposed approach.

Keywords

ATE, Calibration strategy, dependency matrix

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IMEKO-TC4-2014-205.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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