Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1992-09-28
1993-06-01
Strecker, Gerard R.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324649, 324691, G01R 2700
Patent
active
052163733
ABSTRACT:
A circuit element measuring apparatus for measuring a parameter of a device under test (DUT) includes a signal source, a voltmeter, a zero detection amplifier, and a compensation network all of which are coupled to the DUT by four shielded lines. The compensation network is also coupled to a range resistance. The compensation network provides two independent sets of correction data. One is based on the length of the shielded line and the other is based on the range resistance used. The parameter being measured can then be adjusted by the appropriate set of correction data to provide a more accurate measurement. A method of operating the circuit element measuring apparatus for measuring the parameter of the DUT by generating the two sets of correction data and adjusting the parameter accordingly.
REFERENCES:
patent: 5014012 (1991-05-01), Kuboyama et al.
Kohichi Maeda et al "Multi-Frequency LCR Meters Test Components Under Realistic Conditions" Hewlett-Packard Journal, pp. 24-31, Feb. 1979.
Yoh Narimatsu et al "A Versatile Low Frequency Impedance Analyzer with an Integral Tracking Gain-Phase Meter" Hewlett-Packard Journal pp. 22-28, Sep., 1981.
Goto Shinya
Wakamatsu Hideki
Do Diep
Hewlett--Packard Company
Strecker Gerard R.
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