NMEA 0183 is a combined electrical and data specification for communication between marine electronics such as depth sounder, Log (speed through water), compass, autopilot, GPS receivers etc. It is defined and controlled by the National Marine Electronics Association (NMEA). In leisure marine applications it is slowly being phased out in favor of the newer NMEA 2000 standard although NMEA 0183 remains the norm in commercial shipping.
The NMEA 0183 standard uses a simple, ASCII, serial communications protocol that defines how data are transmitted in a "sentence" from one "talker" to multiple "listeners" at a time. In order for multiple sensors to be able to talk a single device (listener) a multiplexer must be used to buffer and combine the data streams from each sensor (talker).
Although the NMEA 0183 specification only defines an RS422 transport, as it uses a serial communications protocol, there has developed a single standard for sending NMEA 0183 sentences over an IP network using TCP or UDP.
In order to direct navCenter to process data encoded in NMEA 0183 format select Input format "NMEA0183" from the Settings View.
RMC - Recommended Minimum Navigation Information
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$GPRMC,120002.03,A,3905.84900,N,02633.42800,E,0000.0,330.0,011019,0.0,W,A,*6C
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navCenter currently decodes the following NMEA 0183 Sentences:
Please let us know if you would us like to decode additional sentences by dropping us an eMail via our Contact us page)