Method and apparatus for asynchronously measuring frequency shif

Details Method and apparatus for asynchronously measuring frequency shif Method and apparatus for asynchronously measuring frequency shif

1996-01-19

1999-11-30

Wachsman, Hal Dodge

Data processing: measuring, calibrating, or testing

Testing system

For transfer function determination

702 75, 702 76, 702 77, 702189, 324 7619, 324 7624, G06G 719

Patent

active

059959142

ABSTRACT:
A method and apparatus for fast response and distortion measurement of a signal transfer device. A computer processor generates a multitone test signal of predetermined duration and stores it in a memory. The test signal is read out, converted to analog form, if necessary, and applied to the input of a device under test. The output produced by the device under test in response to the test signal is acquired and digitized, if necessary, and a Fast Fourier Transform is performed on the acquired data to determine its spectral characteristics. Frequency response, harmonic distortion, intermodulation distortion, phase distortion, wow and flutter and other signal transfer characteristics are measured by the CPU by analysis of the output signal.

REFERENCES:
patent: 4028622 (1977-06-01), Evans et al.
patent: 4093988 (1978-06-01), Scott
patent: 4290010 (1981-09-01), Blaess et al.
patent: 4574234 (1986-03-01), Inbar
patent: 4648124 (1987-03-01), Mantovani et al.
patent: 4740744 (1988-04-01), Lubarsky et al.
patent: 4791577 (1988-12-01), Winter
patent: 4890055 (1989-12-01), Van Broekhoven et al.
patent: 4901244 (1990-02-01), Szeto
patent: 4904930 (1990-02-01), Nicholas
patent: 5038097 (1991-08-01), Imanaka
patent: 5117369 (1992-05-01), Yoshikawa
patent: 5162723 (1992-11-01), Marzalek et al.
patent: 5251155 (1993-10-01), Adachi
patent: 5253179 (1993-10-01), Richett
patent: 5291140 (1994-03-01), Wagner
patent: 5347284 (1994-09-01), Volpi et al.
patent: 5420516 (1995-05-01), Cabot
patent: 5475315 (1995-12-01), Cabot

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