The NMEA 0183 standard is the most common protocol used to receive and transmit data to and from peripheral sensors. A parametric sentence structure is used for all NMEA data.
The sentence starts with a “$” delimiter and represents the majority of approved sentences defined by the standard. This sentence structure with delimited and defined data files, is the preferred method for conveying information.
For more information about the NMEA standard, the format and the data sentences, refer to NMEA’s official publications. The NMEA 1083 - Standard for Interfacing Marine Electronic Devices document explains the formats in detail. The document can be obtained from NMEA.