Data processing: measuring – calibrating – or testing – Testing system – For transfer function determination
Patent
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.
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