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US 6,788,073 B2Granted
Data processing systems having mismatched impedance components
AssigneeDell Products L.P.
InventorsDouglas E. Wallace, Steven J. Lash, Stephanus D. Saputro
Life of this patent
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Abstract
A data processing system having mismatched impedance components and method of use is disclosed. In one embodiment, the method includes exciting a printed circuit board circuit having mismatched impedance printed circuit board components. Measuring at least one impedance of the circuit with a time domain reflectometer. In response to the measured at least one impedance of the circuit, adjusting at least one printed circuit board circuit element.
Claims23
A method comprising:
- exciting a printed circuit board circuit having mismatched impedance printed circuit board components, the mismatched impedance printed circuit board including at least one Connector Specification component and at least one non-Connector Specification component;
- measuring at least one impedance of the circuit with a time domain reflectometer;
- and
- adjusting at least one printed circuit board circuit element, in response to the measured at least one impedance of the circuit.
1 more element
A method comprising:
- exciting a printed circuit board circuit having mismatched impedance printed circuit board components;
- measuring at least one impedance of the circuit with a time domain reflectometer;
- and
- adjusting the at least one printed circuit board circuit element, in response to the measured at least one impedance of the circuit, wherein the adjusting step further includes:
- comparing the measured at least one impedance with a defined baseline impedance;
- and in response to a determination that a difference between the defined baseline impedance and the measured at least one impedance exceeds a defined tolerance, adjusting the at least one printed circuit board element such that the measured at least one impedance moves toward the defined baseline impedance.
3 more elements
A method comprising:
- exciting a printed circuit board circuit having mismatched impedance printed circuit board components;
- measuring at least one impedance of the circuit with a time domain reflectometer;
- and
- adjusting the at least one printed circuit board circuit element, in response to the measured at least one impedance of the circuit;
- wherein adjusting an electrical characteristic of the at least one printed circuit board circuit element if an absolute value of a maximum measured impedance variation above a defined baseline impedance substantially varies from an absolute value of a maximum measured impedance variation below the defined baseline impedance.
2 more elements
A computer system comprising:
- one or more printed circuit boards having at least one circuit wherein reside substantially mismatched impedance printed circuit board components;
- an impedance-variation equalizing distribution of at least one printed circuit board element operably coupled with the substantially mismatched impedance printed circuit board components;
- the at least one printed circuit board element which renders impedance variations above and below a defined baseline impedance practicably equivalent;
- and
- the one or more printed circuit boards operably connecting at least one processor and at least one memory.
2 more elements
A computer system comprising:
- one or more printed circuit boards having at least one circuit wherein reside substantially mismatched impedance printed circuit board components;
- an impedance-variation equalizing distribution of at least one printed circuit board element operably coupled with the substantially mismatched impedance printed circuit board components;
- the at least one printed circuit board element which renders impedance variations above and below a defined baseline impedance practicably equivalent;
- and
- the one or more printed circuit boards operably connecting at least one processor and at least one memory;
- wherein the substantially mismatched impedance printed circuit board components including at least one Connector Specification component operably connected with at least one non-Connector Specification component.
3 more elements
Dependencies are inferred from the claim text.