Seatalk Ng; Nmea 2000 - Raymarine Evolution EV-2 Installation Instructions Manual

2.7 Seatalk ng
SeaTalk ng (Next Generation) is an enhanced protocol for
connection of compatible marine instruments and equipment. It
replaces the older SeaTalk and SeaTalk
SeaTalk ng utilizes a single backbone to which compatible
instruments connect using a spur. Data and power are carried
within the backbone. Devices that have a low draw can be
powered from the network, although high current equipment will
need to have a separate power connection.
SeaTalk ng is a proprietary extension to NMEA 2000 and the
proven CAN bus technology. Compatible NMEA 2000 and
SeaTalk / SeaTalk 2 devices can also be connected using the
appropriate interfaces or adaptor cables as required.
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2 protocols.

2.8 NMEA 2000

NMEA 2000 offers significant improvements over NMEA 0183,
most notably in speed and connectivity. Up to 50 units can
simultaneously transmit and receive on a single physical bus at
any one time, with each node being physically addressable. The
standard was specifically intended to allow for a whole network
of marine electronics from any manufacturer to communicate on
a common bus via standardized message types and formats.
Evolution EV-2