Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission
Patent
1997-01-02
1998-09-08
Loomis, Paul
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Of data transmission
455 672, 455425, 324501, H04M 124, H04B 1700
Patent
active
058056670
ABSTRACT:
An apparatus for, and method of, range-testing a cordless communication device. The device has a first portion adapted to communicate with a second portion via a signal carried on a wireless channel, the signal subject to attenuation as a function of a distance separating the first and second portions. The apparatus includes: (1) an anechoic chamber for containing the first portion and substantially electromagnetically isolating the first portion from the second portion, (2) a wire for carrying the signal between the first and second portions, one end of the wire locateable within the anechoic chamber proximate the first portion and an opposite end of the wire locateable proximate the second portion and (3) a signal modification circuit, associated with the wire, for changing an amplitude of the signal by a selectable quantity, the signal modification circuit simulating the distance between the first and second portions thereby to allow the cordless communication device to be range-tested without actually varying the distance.
REFERENCES:
patent: 3290598 (1966-12-01), Thomas
patent: 4603325 (1986-07-01), Marino et al.
patent: 5539803 (1996-07-01), Bhat et al.
Alvarez Luis M.
Sessego Raimondo P.
Loomis Paul
Lucent Technologies - Inc.
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