Boots – shoes – and leggings
Patent
1986-01-30
1989-08-22
Tarcza, Thomas H.
Boots, shoes, and leggings
364550, 324 57R, 324 57N, 324 77R, G01R 1900
Patent
active
048602272
ABSTRACT:
A measurement circuit includes two signal sources, one for generating a test input signal to a DUT and the other for generating a sampling signal. Both sources are coupled to one crystal oscillator and one or both sources may be fractional N oscillators. A phase locked loop stabilizes the sampling signal generated by the fractional N oscillator. The test input signal and the output signal from the DUT are separately mixed with the sampling signal and the resulting sampled signal are converted to digital values by A/D converters and stored in a microprocessor. The stored values can later be compared and analyzed by the microprocessor to determine the characteristics of the DUT.
REFERENCES:
patent: 3818331 (1974-06-01), Schlosser
patent: 3818332 (1974-06-01), Schlosser
patent: 4118665 (1978-10-01), Reinhardt
patent: 4264859 (1981-04-01), Blaess
patent: 4275446 (1981-06-01), Blaess
patent: 4409543 (1983-10-01), Sugihara
patent: 4409544 (1983-10-01), Redlich
patent: 4544879 (1985-10-01), Maeda et al.
patent: 4638248 (1987-01-01), Schweickert
patent: 4641246 (1987-02-01), Halbert et al.
patent: 4686628 (1987-08-01), Lee et al.
Cain David
Hewlett--Packard Company
Tarcza Thomas H.
LandOfFree
Circuit for measuring characteristics of a device under test does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for measuring characteristics of a device under test, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for measuring characteristics of a device under test will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2420435