| 摘要 |
A coupling unit for use with a shielded twisted pair cable comprises an interface for physically connecting the coupling unit to a twisted pair cable, a plurality of conductive elements 120, each configured to be electrically connected to a conductor of the cable, and at least one electrode 130a, 130b that is adjacent to one or more of the conductive elements. The electrode is configured to transmit a voltage signal to, or receive one from, the conductive element by non-contact (eg capacitive) coupling. The coupling unit may be used in a network monitoring apparatus, or to trace the path of cables. |
