Patent ID: 6810758
Filing Date: 2004-11-02
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 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 one of said carriage and said base to support said sample; a rotational mechanism coupled to said chuck 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 the other one of said carriage and said base other than the one to which said chuck is mounted, said probe assemblies mounted in a position to provide a probe opposite any point on said sample as said carnage is advanced and said chuck is 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.