| 摘要 |
A battery powered, hand-held signal generator adapted to be connected to home or business telephone line at the interface between the telephone company wiring or the home or business wiring. The signal generator successively applies a uniquely coded pulsed signal to each wire of the line. The invention further includes a hand-held receiver adapted to be plugged into each modular telephone jack of the home or business line. The receiver contains four separate receiving circuits, one of which is connected to each wire of the line. Each receiving circuit includes a visual indicator such as an LED for visually indicating reception of a pulsed signal through that wire. By monitoring the reception of pulses over each wire, the user of the device can determine if each of the wires is properly connected. Reception of the wrong code on a given wire indicates a cross connection with the wire on which the received code is transmitted. Reception of the same code on more than one wire indicates a short between the wires. Failure to receive any code on a wire indicates an open break.
|
