Method and apparatus for fault isolation by a communication syst

Details Method and apparatus for fault isolation by a communication syst Method and apparatus for fault isolation by a communication syst

1994-12-02

1997-12-30

Nguyen, Vinh P.

Electricity: measuring and testing

Plural, automatically sequential tests

455 677, G01R 1500, H03G 500

Patent

active

057034796

ABSTRACT:
A method and apparatus for testing of a unit under test (50) by a communication system tester performs loopback tests. During these loopback tests, data transmitted by the unit under test may be stored (21) and sent back to the unit under test. In addition, user defined prestored data (22) may be transmitted to the unit under test. Further, prestored messages (24) and tones (23) may be stored by the communication system tester and transmitted to the unit under test for display on a speaker. An operator (52) may review the output of the speaker and determine whether the test has been properly passed. As a result, the operator may determine whether a fault exits in the receiver or transmitter of the unit under test.

REFERENCES:
patent: 4399556 (1983-08-01), Whidden
patent: 4823391 (1989-04-01), Schwartz
patent: 4903323 (1990-02-01), Hendershot
patent: 5404572 (1995-04-01), Ishii
patent: 5506910 (1996-04-01), Miller et al.

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