Combined data input and test circuit

Details Combined data input and test circuit Combined data input and test circuit

1979-05-10

1980-09-23

Robinson, Thomas A.

Telegraphy

Systems

Line-clearing and circuit maintenance

324 73AT, 340514, 364579, 371 27, G01R 1512, H04L 2502

Patent

active

042244668

ABSTRACT:
Input channels are provided for receiving data pulses from sensors or other parts of an electronic data system. Filters, for examle r-f decoupling filters, are provided for each channel prior to passing the pulses to a utilization device, such as a counter or the like. The shunt or grounding capacitors of the filters are tied together and connected to the output of a test pulse generator which performs two functions. In normal operation, the output circuit of the test pulse generator provides an effective AC path to ground for normal operation of the filters and their shunt capacitors. In a self-test mode, the test pulse generator provides a test pulse which is coupled through the shunt capacitors, the filters and optional wave shaping amplifiers to the utilization device for verification of the operative condition of the circuits.

REFERENCES:
patent: Re30037 (1979-06-01), Bass
patent: 3500318 (1970-03-01), Arlen
patent: 3838261 (1974-09-01), Rice et al.
patent: 3943348 (1976-03-01), Akriche et al.
patent: 4163210 (1979-07-01), Giraud

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