Method and apparatus for testing communication systems
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United States of America Patent
Stats
-
Sep 9, 1986
Grant Date -
N/A
app pub date -
Aug 29, 1984
filing date -
Aug 29, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microcomputer controlled apparatus and method for testing communication lines including circuits serving multiple functions in the measurements of line electrical and noise characteristics. A current divider, an analog to digital converter, a constant current source, various filters and an RMS-to-DC converter are used to perform A.C. and D.C. voltage and current measurements, resistance measurement and noise measurement. Capacitance measurement circuits and method utilize a buffer for isolating the capacitance on the wire measured from other capacitance sources.
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