Method and apparatus for adaptive learning of testing errors in for the reduction of the total number of test measurements are required in real time

摘要

A method and system for optimizing the number of required measurements to obtain in real-time by an automated tester (10) that tests a device under test (108) is presented. At the beginning of a run of the test, each measurement required to calculate the component value is measured in real-time (42) and then maintained as a historical measurement (34). On each subsequent iteration, the test attempts to remeasure the fewest number of measurements in real-time that, when calculations are performed using the real-time measurements (42) and substituting historical measurements (34) for those required measurements that were not taken in real-time, results in an accurate reflection of whether the device being tested (108) passes or fails. If the test fails, a potential false failure condition is detected. Via additional processing (26), it is then determined what other measurements must be taken in real-time to compensate for the error source that may have caused the potential false failure. A measurement combination processor (30) selects a set of retry measurements (36) to be taken in real-time, and the calculations are repeated using the retry measurements until the device under test (108) either passes, or is determined to be a true failure. IMAGE