Patent ID: 6435045
Filing Date: 2002-08-20
Classification: G01R

Abstract:
A test head system to permit the automatic interchange of a plurality of probes as desired to perform various functions on a sample, said test head system comprising:a frame having a base and a panel extending upward from said base; a fixed track mounted on said base to define a travel path along said fixed track; a carriage supported on said fixed track; a chuck rotationally mounted on said carriage to support said sample; a rotational mechanism coupled to said chuck and said carriage to rotationally move said chuck in opposing directions to a desired rotational position; a drive mechanism attached to said carriage to move said carriage in opposing directions to a desired position along said fixed track; and a plurality of probe assemblies each affixed to said panel in a position relative to said fixed track to provide a probe opposite any point on said sample as said chuck is advanced and rotated to a position opposite any of said probes; wherein said rotational mechanism and said drive mechanism are powered in conjunction with each other to position a desired point on said sample beneath a desired one of said probes.