Abstract: A splitting apparatus provides M groups of ports and includes M splitting elements. Each splitting element includes at least one feeder end and N branch ends, where M=N+1. Each branch end of each splitting element is coupled to one branch end of another splitting element in the M splitting elements, where different branch ends of each splitting element are coupled to one branch end of different splitting elements. A feeder end of each splitting element is coupled to one group of ports in the M groups of ports of the splitting apparatus, and feeder ends of different splitting elements are coupled to different groups of ports. The splitting apparatus may implement an optical bus structure with peer-to-peer topologies.

Abstract: A monitor, including a first wiring terminal group, a second wiring terminal group, and a grounding terminal, where the first wiring terminal group includes a first wiring terminal and a second wiring terminal, the first wiring terminal is configured to couple to a conducting wire of a cable, and the second wiring terminal is configured to couple to one end of a primary coil of an isolation transformer, the second wiring terminal group includes a third wiring terminal and a fourth wiring terminal, the third wiring terminal is configured to couple to the conducting wire of the cable, and the fourth wiring terminal is configured to couple to the other end of the primary coil of the isolation transformer, and the grounding terminal is configured to couple to a grounding medium of the cable.

Abstract: A monitor, including a first wiring terminal group, a second wiring terminal group, and a grounding terminal, where the first wiring terminal group includes a first wiring terminal and a second wiring terminal, the first wiring terminal is configured to couple to a conducting wire of a cable, and the second wiring terminal is configured to couple to one end of a primary coil of an isolation transformer, the second wiring terminal group includes a third wiring terminal and a fourth wiring terminal, the third wiring terminal is configured to couple to the conducting wire of the cable, and the fourth wiring terminal is configured to couple to the other end of the primary coil of the isolation transformer, and the grounding terminal is configured to couple to a grounding medium of the cable.