

The Fathom-X boards provide a robust high-speed, long-distance Ethernet connection over a single pair of wires. Enables HD video and high-bandwidth data over 300m+ tether lengths.
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The Fathom-X Tether Interface Boards provide a high-speed, long-distance Ethernet connection to an ROV or other remote platform. They’re designed for use with the Fathom tether, standard Cat5 cable, or even a single twisted pair of wires. This board uses the HomePlug , which leverages the robust HomePlug AV (IEEE-1901) standard for sending Ethernet through powerlines. It has the following features:
Unlike our Fathom-S Tether Interface, with Fathom-X the exact same board is used on each end of the tether. One on the ROV and one on the topside. You can even connect more than two of these boards to the same tether lines. (Not sure why you’d want that… two ROVs on one tether?!)
The Fathom-X Tether Interface Board Set is open-source and open-hardware, so the schematics and board files are free to view, modify, and reuse. The electrical schematic and board layout are open-source and the design files are available below.