Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Calibration
Reexamination Certificate
2008-01-01
2008-01-01
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Calibration
C324S646000
Reexamination Certificate
active
07315170
ABSTRACT:
In a device for measuring the properties of a device under test connected by a signal transmission path having reciprocity, a terminal on the device under test side of the signal transmission path is opened; pulse signals are transmitted to a terminal on the measuring apparatus side of the signal transmission path; the transmitted pulse signals are monitored and spectrum analyzed on the measuring apparatus; the pulse signals reflected from a terminal on the device under test side of the signal transmission path are monitored and spectrum analyzed on the measuring apparatus; and the frequency properties of propagation delay of the signal transmission path are found by referring to the coefficient obtained based on the impedance of the resistance load, the spectrum of the transmitted pulse signals, and the spectrum of the reflected pulse signals. The effect of an error is eliminated from the measuring results using the resulting frequency properties or propagation delay in actual measurement.
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Hiwada et al,; “Dynamic Test System for High Speed Mixed Signal Devices”; Yokogawa- Hewlett Packard; 1987; pp. 1-6.
Deb Anjan
Ohlandt Greeley Ruggiero & Perle L.L.P.
Verigy (Singapore Pte. Ltd.
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