Digital Yacht J1939 Doctor Diagnostic Tool [ZDIGJDOC]J1939 Doctor Diagnostic Tool Self contained J1939 diagnostics tool with physical network and data analysis on your phone, tablet, PC, or MAC. 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, a self contained J1939 diagnostics tool has been developed, featuring a built in web interface that allows any