Furuno NavNet 3D MFD12, Installation Manual

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2.4.3. NMEA2000-0183 Data Conversion and NMEA2000 Bridging
NMEA0183 to NMEA2000 conversion
NMEA0183 sentences and NMEA2000 PGNs, which are used and accepted in the MFD
network can be converted and output in either/both NMEA0183/NMEA2000 formats.
Note that only one type of data can be converted and output at a time (one position, one
depth, one heading…). In case of multiple GPS, the position output is the one currently
selected in an MFD network. This NN3D prioritizing function allows NMEA2000
products to utilize older NMEA0183 sensors and vice-versa. For example, you can
connect a NMEA0183 Wind Instrument such as the Furuno PB100 to NavNet3D, and
have the corresponding information output on one (or several) MFD NMEA2000 ports to
feed a NMEA2000 display such as the Furuno FI50. The opposite is also true.
Ethernet Bridging of Individual NMEA2000 Networks/Backbones
You may ONLY connect one MFD or DRS to the same NMEA2000 Network. Some
NN3D vessels may contain several smaller NMEA2000 Networks where data from each
NMEA2000 network is linked via the High-Bandwidth NN3D Ethernet Network. In these
cases, each separate NMEA2000 network will be “Bridged” together via the NN3D
Ethernet Network. NN3D MFD and DRS NMEA2000 ports shall also not be connected
together. In the case where NMEA2000 engine data, or other ship’s data, is introduced
to the NN3D Network, the connection is made to only one MFD, and this MFD will
bridge the data to other MFDs in the network.