Version 4.11 (released November 2018) is a proprietary standard that defines the electrical requirements and data transmission protocols for marine electronics. While the official full specification PDF must be purchased from the National Marine Electronics Association (NMEA)
Typically follows EIA RS-422 (differential signaling) for noise immunity. Nmea 0183 Version 4.11 Pdf-
Reality: NMEA 2000 is superior for complex networks, but thousands of existing sensors and displays still use 0183. Version 4.11 keeps them relevant. Version 4