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제목What is "NMEA Standard"2017-12-27 10:37
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The National Marine Electronics Association developed this standard in 1983 as an interface specification for digital data transfer among marine navigation instruments.

NMEA-0183 standard defines
- the electrical signal requirement,
- data transmission protocol,
- data transmission timing, and
- specific message formats for a 4800 baud serial data interface.

NMEA-0183 devices employ an asynchronous serial interface wile the following parameters.

Baud rate: 4800bps
Data bits: 8 (d7=0)
Parity: None
Stop bits: One

Devices are designated as either talkers or listeners with some devices being both.
A talker is any device that send data to other NMEA-0183 devices.
A listeners is any devices that receives data from other NMEA-0183 devices.
Instruments that  are both talker and listener will have separate connection for each function.
All data either transmitted or received interpreted as 8 bit ASCII.

Jinbo SIm/CEO
Zinnos Inc.


https://www.zinnos.com 

http://www.digitalmarine.kr

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