Patent ID: 6288557
Filing Date: 2001-09-11
Classification: G01R

Abstract:
A probe station for probing a test device, said probe station comprising:(a) a chuck assembly having a chuck assembly element with a supporting surface for supporting said test device during probing thereof;(b) an electrically conductive first enclosure at least partially enclosing said chuck assembly element peripherally, and insulated therefrom;(c) an electrically conductive second enclosure interposed between and insulated from said first enclosure and said chuck assembly element, and at least partially enclosing said chuck assembly element peripherally;(d) an electrically conductive third enclosure interposed between and insulated from said second enclosure and said chuck assembly element, and at least partially enclosing said chuck assembly element peripherally;(e) at least said third enclosure being interconnected with said chuck assembly element so as to move in unison therewith with respect to at least a portion of said first enclosure.