Method and apparatus for checking analog-to-digital converters, digital-to-analog converters, or telecommunications transmission links which contain such converters
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United States of America Patent
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Sep 3, 1985
Grant Date -
N/A
app pub date -
Feb 16, 1983
filing date -
Jul 8, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The test specimen is charged with an analog, preferably sinusoidal periodic test signal or, respectively, with the digital samples of such a test signal, whereby a numerical relationship exists between the period of the test signal and the system-inherent sampling period such that all sampling times lying within a predetermined test time span occupy different relative time slots in the periodicity interval of the test signal. Arising as a result thereof are a plurality of output information of the test specimen which, as a totality, describe the response of the test specimen to the test signal as precisely as desired. Said output information are, if need be after analog-to-digital conversion in a standard coder, deposited in a store and are available for identifying the desired properties of the test specimen, for example, the level-dependent distortions, by means of a computer.
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