Test fixture for matched impedance testing
AssigneeDelaware Capital Formation, Inc.
InventorMark A. Swart
Life of this patent
Estimating the term…
Abstract
A test fixture for matched impedance testing of a printed circuit board having a top plate for supporting the printed circuit board having matched impedance circuit traces extending from test site locations on the printed circuit board requiring matched impedance testing. Spring probes extend through holes in the top plate for transmission of test signals from the test sites on the printed circuit board to the matched impedance circuit traces. A TDR meter is wired to the top plate by coaxial connectors attached to the circuit traces to read the test signals.
Claims17
A test fixture for matched impedance testing of a printed circuit board comprising:
- a plurality of fixture plates including a top plate for supporting the printed circuit board having matched impedance circuit traces extending from test site locations on the printed circuit board requiring matched impedance testing;
- test probes extending through holes in the top plate for transmission of test signals from the test sites on the printed circuit board requiring matched impedance testing to the matched impedance circuit traces;
- and
- means for analyzing the test signals connected to the test fixture.
A translator fixture for matched impedance testing of a printed circuit board comprising:
- a plurality of translator plates including a top plate for supporting the printed circuit board having matched impedance circuit traces extending from test site locations on the printed circuit board requiring matched impedance testing;
- a plurality of translator pins extending through the translator plates for contacting test pads on the printed circuit board not requiring matched impedance testing;
- a plurality of test probes extending through the top plate for transmission of test signals from matched impedance test sites on the printed circuit board to the matched impedance circuit traces;
- and
- means for analyzing the test signals connected to the translator fixture.
A wired test fixture for matched impedance testing of a printed circuit board comprising:
- a plurality of fixture plates including a top plate for supporting the printed circuit board having matched impedance circuit traces extending from test site locations on the printed circuit board requiring matched impedance testing;
- a plurality of spring probes contained within the test fixture separately wired to external test electronics;
- a plurality of test probes extending through holes in the top plate for transmission of test signals from the test sites on the printed circuit board to the matched impedance circuit traces;
- and
- means for analyzing the matched impedance test signals wired to the matched impedance circuit traces.
Dependencies are inferred from the claim text.