Ethernet over coaxial cable is a non-modem solution designed for the delivery of full-duplex, synchronous high-speed data over existing coaxial cable. Ethernet over coax provide 100BaseT full wire speed Ethernet and (optional) power over the same coaxial cable.
The adapters convert the symmetrical send/receive Ethernet signals into asymmetrical signals and then combine them to be transported over a single strand of copper. [See Ethernet over Coax - Revisited.] To compensate for the loss that occurs during conversion, the system re-amplifies the received signal.
Depending on the installed coaxial cable type distances of up to 350m are possible, and up to 700m if a repeater is enployed.
The approach to the delivery of power over the same coaxial cable is fundamentally different in the two systems offered by Omega Cubed.
NVT Ethernet and PoE Over Coax Transceivers allow 10/100 BaseT Ethernet and PoE power to be transmitted using coax cable. 48VDC power is delivered to one transceiver, which distributes it to up to four remote transceivers.
Technetix adapters provide power accordancing to the Power over Ethernet standard IEEE 802.3af, Class 2 (6.49W per powered device) or Class 3 (12.59W per powered device) dependant on the power input and power loss in the coaxial cable or in a non-standard way with the only limitation being a maximum transmitted power of 60W. To make effective use of the Technetix adapters to supply power it is necessary to know the electrical properties and length of the coaxial cable employed to calculate the voltage drop. [See Voltage Drop, as a function of current, for different types of coaxial cable.]