Method of searching fault locations in digital transmission line

摘要: A method of searching fault locations which is-employed in a transmission system comprising transmitting terminal (1) having transmitter (2) for digital signal; receiving (5) receiver (8) the plurality repeaters (4, 4, ...) are placed between and terminals, each receives amplifies signal from preceding repeater section deliver it to subsequent section; lines (3, 3, connecting with first repeater, other final receiver, respectively. This comprises steps coding an orginal be transmitted terms two kinds error detecting codes at send out them transmitter; received using one thereby measure rate occurred corresponding repeater; recording decoded code employed detect error, delivering signals represents measured or terminal.