| 摘要 |
<p>A device for carrying a power signal and a serial digital data signal over a cable comprises a connector for connecting to the cable; a splitter having first, second and third ports, the splitter being configured so that the power signal is passed from the first port to the second port, and the digital data signal is passed between the first and third ports; a transceiver coupled to the third port of the splitter for point-to-point communication of the full duplex serial digital data signal over the cable; a power supply for voltage conversion coupled to and powered from the second port of the splitter, the power supply having a power source port connected to the transceiver for powering the transceiver from the power supply; a data port coupled to the transceiver and connectable to a data unit for connecting the digital data signal to the data unit; and an indicator powered by the power supply for indicating a status of the device status.</p> |
