Loopback tester for testing field replaceable units

Details Loopback tester for testing field replaceable units Loopback tester for testing field replaceable units

1989-03-31

1991-03-05

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

H04B 346

Patent

active

049980696

ABSTRACT:
An apparatus for testing cables, cable connections associated with devices and devices in a daisy chain configuration. Cable malfunctions and cable connection malfunctions can be isolated down to a single device in a daisy chain system by looping back the data bus to the control bus or vice versa. A signal is then sent out on the first bus and received back on the second bus. If a cable malfunction is present, the signal received will not be the same as the signal transmitted.

REFERENCES:
patent: 4134099 (1979-01-01), Lankford, Jr.
patent: 4443755 (1984-04-01), Wooten
patent: 4468612 (1984-08-01), Starr
patent: 4772845 (1988-09-01), Scott

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