Patent ID: 6218851
Filing Date: 2001-04-17
Classification: G01R

Abstract:
A method for testing a printed circuit, said method comprising:placing the printed circuit between two needle bearing boards opposing each other, wherein each of the two needle bearing boards has a plurality of independently operable conductive needles;moveably supporting the printed circuit;positioning at least one of the two needle bearing boards along its plane in both its orthogonal axes with respect to the printed circuit to a position such that one needle of each of the plurality of independently operable conductive needles of each of the two needle bearing boards is in position to contact a test point on the printed circuit, said positioning of at least one of the two needle boards requiring a movement in each of the orthogonal axes of no greater than a distance between two of the plurality of independently operable needles on the at least one of the two needle bearing boards;axially moving the one needle of each of the two needle bearing boards to contact respective test points on the printed circuit with an electromagnet even when the printed circuit is not on a same plane at all its points; andtesting the test points of the printed circuit by using an analysis device to analyze electric parameters between the test points.