Patent ID: 6414502
Filing Date: 2002-07-02
Classification: G01R

Abstract:
A test fixture for electrically connecting a plurality of limited-access test targets on a loaded circuit board with a plurality of interface probes of a tester, comprising:a plurality of elongate test probes, each of said plurality of elongate test probes having a first end and a second end, the first end of each of said plurality of elongate test probes being substantially aligned with a limited-access target on the loaded circuit board when said test fixture is positioned adjacent the loaded circuit board; a universal interface plate; a plurality of double-headed spring probes mounted to said universal interface plate, each of said plurality double-headed spring probes having a first spring loaded head located at a first end of each of said plurality of double-headed spring probes and a second spring loaded head located at a second end of each of said plurality of double-headed spring probes, each of said plurality of double-headed spring probes being generally axially aligned with a corresponding one of said plurality of elongate test probes so that the first spring loaded head of each of said plurality of said double-headed spring probes contacts the second end of each corresponding one of said plurality of elongate test probes; a wireless interface printed circuit board having a first side and a second side; a plurality of contact pads on the first side of said wireless interface printed circuit board, each of said plurality of contact pads being substantially aligned with a corresponding one of said plurality of double-headed spring probes so that each of said plurality of contact pads contacts the second spring loaded head of each corresponding one of said plurality of double-headed spring probes; and a plurality of contact targets on the second side of said wireless interface printed circuit board, each of said plurality of contact targets being electrically connected to a corresponding one of said plurality of contact pads on the first side of said wireless interface printed circuit board, each of said plurality of contact targets contacting a corresponding one of the plurality of interface probes of the tester when said test fixture is mounted on the tester.