Patent ID: 9523735
Filing Date: 2016-12-20
CPC Classification: G01B,G01R,G06F,G06T,H05K

Claim Text:
1. An electrical testing system configured to test a series of devices fabricated on successive frames of a web of substrate, each frame including a plurality of fiducial marks and a device having a series of test pads, comprising: a web transport system for advancing the web of substrate along a web transport path; an electrical test fixture including a set of test probes adapted to make electrical contact with the test pads of a particular device on the web of substrate; a test instrument associated with the set of test probes; a digital imaging system configured to capture a digital image of at least a portion of a particular frame including the test pads of the particular device and the fiducial marks; a fiducial sensing system including a plurality of fiducial sensors, each adapted to sense a position of an associated fiducial mark; and a controller configured to: