Method and apparatus for measuring the transmission characterist

Details Method and apparatus for measuring the transmission characterist Method and apparatus for measuring the transmission characterist

1979-04-11

1981-06-02

Wise, Edward J.

Boots, shoes, and leggings

364514, 455226, G06F 1520

Patent

active

042714788

ABSTRACT:
A method and apparatus for measuring the transmission characteristics in electrical communication transmission systems in which individual frequencies which differ from each other are consecutively produced as measuring signals at the transmitter and transmitted to the receiver through the transmission path wherein measurements of the different individual frequencies are consecutively accomplished at the receiver. So as to simplify and accelerate the method, the transmission of the individual frequencies f.sub.1 through f.sub.n at the transmitter is based on a known time schedule and at the receiver the time at which the selected individual frequencies is determined for the individual frequencies, for example, f.sub.1, by the use of a filtering technique. After the initial frequency is received, a time program is started at the receiver which has the same time plan as that at the transmitter. The assignment of the respective measurements relative to the individual frequencies f.sub.1 through f.sub.n is accomplished according to this time program at the receiver.

REFERENCES:
patent: T940015 (1975-11-01), Hoet al.
patent: 3629831 (1971-12-01), Mikus et al.
patent: 3920973 (1975-11-01), Avellar et al.
patent: 3921072 (1975-11-01), Sato
patent: 4090242 (1978-05-01), Lerma et al.

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