Patent ID: 6225817
Filing Date: 2001-05-01
Classification: G01R

Abstract:
A guided-probe test fixture for electrically connecting one or more limited-access test targets on a loaded circuit board under test with interface probes of a tester, said guided-probe test fixture comprising:a) one or more long, solid test probes;b) a plurality of substantially parallel guide plates having a first side and a second side, said plurality of substantially parallel guide plates having through holes in predetermined locations, such that each of said one or more long, solid test probes extends through said through holes in said guide plates and lines-up with a corresponding one of said one or more limited-access test targets on said first side of said guide plates;c) a probe-mounting plate having a first side and a second side, said first side of said probe-mounting plate being on said second side of said guide plates;d) one or more double-headed spring probes mounted in said probe-mounting plate and extending from said first side of said probe-mounting plate to said second side of said probe-mounting plate, wherein each of said one or more double-headed spring probes extends from said first side of said probe-mounting plate and lines-up with a corresponding one of said one or more long, solid test probes on said second side of said guide plates;e) a wireless interface printed circuit board having a first side and a second side;f) one or more contact pads on said first side of said wireless interface printed circuit board, wherein each of said one or more contact pads on said first side of said wireless interface printed circuit board lines-up with and makes electrical contact with a corresponding one of said one or more double-headed spring probes extending from said second side of said probe-mounting plate; andg) one or more contact targets on said second side of said wireless interface printed circuit board, wherein each of said one or more contact targets on said second side of said wireless interface printed circuit board lines-up with and makes electrical contact with a corresponding interface probe of said tester when said guided-probe test fixture is mounted on said tester.