In-service technique for measuring transmission...

Details In-service technique for measuring transmission... In-service technique for measuring transmission...

G - Physics

01

R

324/30

G01R 27/04 (2006.01) G01R 31/02 (2006.01)

Patent

CA 1040265

AN IN-SERVICE TECHNIQUE FOR MEASURING TRANSMISSION CHARACTERISTICS OF A MICROWAVE RADIO LINK by John Willson Oades ABSTRACT OF INVENTION A composite test signal consisting of a search test signal and a sweep test signal from a link test set is combined with the through-path traffic signals during in-service testing. The composite signals are simultaneously applied to a transmitter of a microwave radio communication link under test. The sweep signal level is adjusted at the microwave radio communication link transmitter so that the total FM deviation is limited to the normal IF or RF transmission frequency band. The composite test signals and traffic signals are received and split into a through path signal and a test path signal. In the through path, the test signals are blocked, and the traffic signals are transmitted to the next microwave radio hop. In the test path, the traffic signals are blocked, and the test signals are applied to the receive section of a link test set. The link test set is then used to measure the transmission characteristics of the microwave radio communication link under test.

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