Vacuum actuated bi-level test fixture

Details Vacuum actuated bi-level test fixture Vacuum actuated bi-level test fixture

1984-03-05

1986-11-25

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 73PC, G01R 3102

Patent

active

046251642

ABSTRACT:
A test fixture for selectively electrically connecting an electronic circuit device for in-circuit and functional testing by automatic testing equipment. First and second pluralities of spring-loaded probes are fastened to the test fixture for respectively providing an in-circuit contact array on a first level and a functional contact array on a second level. An electronic cicuit device receiving face is mounted to the test fixture for movement to the first level for electrically connecting the electronic circuit device to the in-circuit contact array, and for movement to the second level for electrically connecting the electronic circuit device to the functional contact array. Means including a bi-level vacuum controller are disclosed for selectively moving the electronic circuit device receiving face to the first and second levels. Means coupled to the bi-level vacuum controller are disclosed for venting the test fixture to ambient during transitions from higher to lower vacuum pressures and to the unactuated condition. The bi-level vacuum controller may be locally actuated by a system operator or remotely actuated by the automatic testing equipment.

REFERENCES:
patent: 4115735 (1978-09-01), Stanford

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