About Nmea And Standard Datagram Formats; Nmea; About The Nmea Datagram Formats - Simrad ES80 Reference Manual

Simrad ES80 Reference Manual

About NMEA and standard datagram formats

Topics
NMEA, page 488
About the NMEA datagram formats, page 488
NMEA sentence structure, page 489
Standard NMEA 0183 communication parameters, page 490

NMEA

The National Marine Electronics Association (NMEA) has defined communication
standards for maritime electronic equipment. The ES80 Wideband fish finding echo
sounder supports these standards for communication with external sensors and peripheral
systems.
The most common standard is NMEA 0183. The National Marine Electronics
Association describes it as follows:
The NMEA 0183 Interface Standard defines electrical signal requirements, data
transmission protocol and time, and specific sentence formats for a 4800-baud serial
data bus. Each bus can have only one talker but many listeners.
National Marine Electronics Association
For more information about the National Marine Electronics Association and the NMEA
0183 standard, refer to the organization's web site at:
• http://www.nmea.org

About the NMEA datagram formats

The ES80 can send and receive information to and from several different peripherals.
All transmissions take place as datagrams with data sentences. Each datagram has a
defined format and length.
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
488
406273/C