Splicing of digital radar, Raynet & RJ45 cables
Digital Skipper |2/05, 2024

Raymarine products that require high bandwidth communication are designed to do so via marinized Ethernet network components. Raymarine RayNet, SeaTalkhs, and Digital Radar cables with RJ45 termination are manufactured with T568B termination. Raymarine's RayNet, SeaTalkHS, and Digital Radar cables are designed to support Ethernet communication between compatible Raymarine products with RayNet, SeaTalkhs, RJ45, or Digital Radar communication ports.
It is generally recommended that Raymarine cable not be cut or spliced to ensure maximum performance and reliability of the system. If it is necessary to remove an RJ45 connector from a SeaTalkhs / RayNet / Ethernet cable, it is recommended that the connector be replaced with a shielded RJ45 (M) connector T568B. Similarly, if a RayNet, SeaTalkhs, or Quantum data cable needs to be cut and then reconnected, it is recommended that a shielded RJ45 (M) connector be installed on the cut ends of the cable and that an R32142 RJ45 to RJ45 waterproof coupling then be used to reconnect the cable. Alternatively, the cable ends can then be reconnected with a marine grade Ethernet cable junction box. If you cut and reconnect a section of a digital radar cable that is not its data leg, you must also address the reconnection of the cable's power wires and shield.
One of the most common causes of failure is an Ethernet network cable fault that has occurred from the cable being bent or subjected to a bend radius less than 6" in diameter. Such installation issues can result in permanent damage to the cable. Therefore, it is recommended that the system's Ethernet communication cable be inspected for bends and tight radius bends. Any suspect cables should be replaced.
When troubleshooting Ethernet communication within a Raymarine system, it may be necessary to perform end-to-end cable testing. To do this, a readily available Ethernet tester (e.g., Extech CT100, Hobbes Netfinder Pro, etc.) is typically used. Since these testers are usually designed to accept an RJ45 (M) connector, it may be necessary to adapt the end/ends of each cable being tested as follows:
- Cable terminating in RayNet (F) connector: adapt with a cable assembly constructed from an A80162 RayNet (M) to RayNet (M) cable coupling and an A62360 1m RayNet (F) to RJ45 (M) cable;
- Cable terminating in SeaTalkHS (M) connector: adapt with a cable assembly constructed from an A80160 SeaTalkHS (F) to RayNet (F) adapter, A80162 RayNet (M) to RayNet (M) cable coupling and an A62360 1m RayNet (F) to RJ45 (M) cable;
- Cable terminating in SeaTalkHS (F) connector: adapt with an E55049 1.5m SeaTalkHS (M) to RJ45 (M) cable;
- Cable terminating in RJ45 (F) socket: adapt with an E06054 1.5m RJ45 (M) to RJ45 (M) cable;
- Cable terminating in RJ45 (M) connector: no adaptation required;
Digital radar cables should be tested by connecting the Ethernet tester's transmitter to the RJ45 (M) connector inside the radome or open array pedestal after power to these units has been turned off. If the other end of the digital radar cable is terminated with an RJ45 (M) connector, it can be easily connected to the Ethernet tester's receiver. If the other end of the digital radar cable is terminated with a RayNet (F) connector, an assembly constructed from an A80162 RayNet (M) to RayNet (M) cable coupling and an A62360 1m RayNet (F) to RJ45 (M) cable would be used to adapt the digital radar cable to connect to the Ethernet tester's receiver.
RayNet Plug Pinout
Digital radar cable (radar transducer end) Pinout:
Digital radar cable RJ45 Pinout: