Diagnostic apparatus for digital-to-analog converters

Details Diagnostic apparatus for digital-to-analog converters Diagnostic apparatus for digital-to-analog converters

1983-04-14

1985-08-27

Smith, Jerry

Excavating

340347CC, G06F 1100

Patent

active

045382662

ABSTRACT:
An apparatus for diagnosing a plurality of digital-to-analog converters simultaneously is provided. Digital signal generation means applies digital signals to the plurality of digital-to-analog converters, and the digital signals are changed in sequence so that the analog outputs from the converters are changed symmetrically with respect to a first predetermined value. The analog outputs from the converters are combined by a resistor network, and the combined output is compared with a second predetermined value by a comparator. If the comparator's output is kept to a predetermined level regardless of changing the digital signals, the digital-to-analog converters are judged that they operate properly.

REFERENCES:
patent: 4144578 (1979-03-01), Mueller et al.
patent: 4229703 (1980-10-01), Bustin

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