The J1939 protocol is increasingly being adopted in marine applications, providing monitoring and control for engines, propulsion systems, generators, and electrical networks. To support this trend, Digital Yacht have developed a self-contained J1939 diagnostics tool called J1939 Doctor, featuring a built-in web interface that allows any device with a browser to connect and analyse data seamlessly. With wireless connectivity to mobile devices, users can access critical information from anywhere on the vessel without the need for physical connections. On Board diagnostics just became simple and it follows Digital Yacht’s popular Nav Doctor NMEA 2000 diagnostic’s solution.
J1939 Doctor not only evaluates the J1939 network but also checks its physical characteristics, including voltages, bus load and frame errors. Users can view all devices connected to the network and drill down into specific data for detailed analysis. Its flexibility is enhanced by a standard “M12” connector, which supports a wide variety of third-party patch cables and breakouts, making it compatible with diverse cabling setups.
Powering the tool is equally versatile. It can draw power directly from the J1939 network (12/24V) or operate from a separate DC supply through the breakout connection. To support reporting and documentation, the tool allows users to print detailed network reports directly from the browser, just as they would with any standard document, simplifying record-keeping and diagnostics.
For more in-depth analysis, you can also view detailed information for a specific PGN with a pop-up window displaying all relevant data for interpretation of data in the PGN fields.
It’s also easy to monitor and manage device fault codes with a user-friendly interface. Fault codes can be displayed and cleared.
J1939 Doctor is priced at £300/€395 ex VAT and shipping now. More information on Digital Yacht websites
