Products

Fathom-X Tether Interface Board - Pair

SKU: BR-100178
£279.99
inc. VAT
The Fathom-X board provides 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.
£279.99
inc. VAT

Product Description

The Fathom-X Tether Interface Board provides 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 a HomePlug module, which leverages the robust HomePlug AV (IEEE-1901) standard for sending Ethernet through powerlines. It has the following features:

  • 80 Mbps Ethernet over two wires (per our own bandwidth testing)
  • 300m+ tether length capability
  • Plug-and-play with no setup involved
  • Onboard switching power supply with 7-28V input range
  • USB Mini-B connector for powering directly from a computer on the topside
  • Indicator LEDs for power, link, and data
  • Included 6″ Ethernet cable for connection to onboard computer

With the 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 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.

Technical Specifications

ParameterValue
Electrical
Supply Voltage (terminal block)7 - 28 volts
Supply Voltage (USB port)5 volts
Max Power Draw2.5 Watts
Performance
Max Practical Bandwidth80 Mbps
Physical Layer Bandwidth200 Mbps
Working Frequency2-30 MHz
Max Tether Length (Published)2000 m
Max Tether Length (tested)300 m
Physical
Operating Temperature-20 to +85°C
Storage Temperature-40 to +85°C
USB Connector TypeUSB Mini B Female
Tether Wire Gauge12-30 AWG
Power Wire Gauge16-26 AWG
Screw Hole Diameter3.3 mm

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