CORRECTING TEST SYSTEM CALIBRATION AND TRANSFORMING DEVICE MEASUREMENTS WHEN USING MULTIPLE TEST FIXTURES

摘要

A test system and methods (400) using the test system correlate measurements of a device under test (DUT) regardless of which test fixture is used for in-fixture testing of the DUT. The test system (400) includes test equipment (410), a test fixture (430A or 43OB), that interfaces the DUT to the test equipment a computer (440) and a computer program (450) executed by the computer (440). The computer program (450) includes Instructions that implement determining a port-specific difference array for test fixtures (430A, 430B) used with the test system (400). The difference array describes a difference between the test fixtures (430A, 430B) at a corresponding test port thereof. The method includes determining the difference array, measuring a performance of the DUT in a second test fixture, and applying the difference array such that the measured performance approximates a hypothetical DUT performance for the DUT as if mounted in a first test fixture.