Is Nmea an RS422?
The NMEA 0183 Standard, along with RS-232, RS-422, etc., belongs to the class of “Asynchronous Serial” interfaces. This means that data is transmitted serially (bit-by-bit) on a single line. NMEA 0183 originally allowed “single-ended” drive, but was later updated to differential drive (RS-422).
What is the difference between RS422 and RS232?
RS232 is full-duplex, RS485 is half-duplex, and RS422 is full-duplex. RS485 and RS232 are only the physical protocol of communication (ie interface standard), RS485 is the differential transmission mode, RS232 is the single-ended transmission mode, but the communication program does not have much difference.
What does NMEA 0183 stand for?
NMEA 0183 is a combined electrical and data specification for communication between marine electronics such as echo sounder, sonars, anemometer, gyrocompass, autopilot, GPS receivers and many other types of instruments. It has been defined by, and is controlled by, the National Marine Electronics Association.