| 摘要 |
PROBLEM TO BE SOLVED: To provide a single cable transmission device capable of transmitting both of a signal and power for a monitoring system through a single cable, attaining long distance transmission by transmitting the signal by a carrier system, attaining bidirectional transmission by transmitting the signal by a frequency division system and to provide also a power voltage/output load state display device capable of directly detecting the trouble of the system and quickly removing the cause of the trouble. SOLUTION: A remote device 10 included in the system is provided with a 1st modulator 12 for converting a 1st set base band signal inputted from the external into a 1st modulation carrier signal and a 1st filter module 13 for receiving the 1st modulation carrier signal and power inputted from a single cable 14, separating the 1st modulation carrier signal and the power by using respectively different frequency bands, respectively ?outputting the separated 1st modulation carrier signal and supplied power, and applying the outputted 1st modulation carrier signal to the cable 14. |
