Method and apparatus for determining the value of analog voltage

Details Method and apparatus for determining the value of analog voltage Method and apparatus for determining the value of analog voltage

1986-04-09

1987-09-01

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of trunk or long line

379 26, H04B 346

Patent

active

046913378

ABSTRACT:
Analog voltages are collected by scanning the two wires of a subscriber line; the values are subjected to an analog-digital conversion and fed to a microprocessor (MC) which computes the desired measuring values from the results of said conversion. Thus, from a single measuring operation performed at two measuring points, nine different voltage values can thus be obtained including dc, ac and external voltages between each wire and ground and between the two wires.

REFERENCES:
patent: Re30692 (1981-07-01), Ellson

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