Patent ID: 6894513
Filing Date: 2005-05-17
Classification: G01R

Abstract:
1. A method comprising the steps of: contacting a conductive plane with a first plurality of generally linearly arranged contacts and with a second plurality of generally linearly arranged contacts, said first and second pluralities of contacts disposed a first distance apart and generally aligned in parallel with respect to each other; causing a known current to flow from the first plurality of contacts to the second plurality of contacts through at least a portion of the plane therebetween; contacting the plane with a third plurality of generally linearly arranged contacts and with a fourth plurality of generally linearly arranged contacts, said third and fourth pluralities of contacts disposed a second distance apart and generally aligned in parallel with respect to each other, and being further disposed inward of the first and second plurality of contacts; measuring a voltage between the third plurality of contact pins and the fourth plurality of contact pins; and determining an electrical property of the plane using at least the known current, the second distance, and the measured voltage.