Nmea 0183 Version 4.11 Pdf- !!link!! 【Pro】

NMEA 0183 Version 4.11 is the digital data protocol standard that enables modern marine electronics and GPS receivers to communicate with each other.

1. Initialize a variable to 0.
2. XOR the variable with the ASCII value of each character in the sentence (between $ and *).
3. Convert the final result to a 2-digit hexadecimal value.

Key changes and highlights in v4.11

• Clarified sentence field descriptions and units for improved interoperability.
• Revised or added talker IDs and sentence identifiers for newer instrument types.
• Emphasized use of standardized units (e.g., degrees, meters, knots) and proper handling of unavailable/invalid data fields.
• Notes on checksum use and sentence fragmentation for long messages.

The spec explicitly states: "Manufacturers shall not assume water density or sound velocity without a corresponding DBT (Depth below transducer) with temperature compensation field." Nmea 0183 Version 4.11 Pdf-