Looking for Nmea 0183 T connector for GPS/VFH Radio DSC

[Lake-Effect]

Originally Posted by fdr14127

This is a not so enlightening discourse on the differences in wiring protocols between NEMA standard connections and Canbus connections. NEMA signals are transmitted over serial connections between talkers and listeners using wires and come in two flavors. Regular and 433 (or is it 422) for longer runs of the wires. The latter is usually used for long runs to the stern for the connections to the tiller pilot for example. The AIS talkers equipment transmits not 4800 baud but 13,500 for reasons that escape me.
NEMA2000 is a more modern bus which is derived from the automotive CANBUS primarily to supply more robust connectors in the marine environment (and so they can charge higher prices to the salty market). The automotive version I suspect would work just as well. These standards are derived from the computer network protocol of TCP/IP which in turn came from the attempt of the Univ of Hawaii to connect all the campuses together without setting poles between the islands and stringing wire. These latter bus systems and like shouting into a hollow pipe and require terminations and the each end of the organ pipe and tee connectors branching to the various devices. They use TCP/IP which is the protocol your PC is using to talk to the net. After research and reading, you understand what I am reporting here then you can move on to playing in the sandbox......Google is your friend.

Um, speaking of being not enlightening...

• it's NMEA, not "NEMA"
• the balanced serial you're referring to is RS-422
• no, the main reason for NMEA 2000 is not for more waterproof connectors
• NMEA 2000 and CAN bus don't use (or derive from) TCP/IP

Perhaps it is time for a N2K refresher for everyone? Google is YOUR friend, too.

[Sailmonkey]

I’ve also fallen trap to the NEMA vs NMEA. Neither is recognized by autocorrect....and once you’ve incorrectly trained it, you’re doomed.

[Reefmagnet]

Originally Posted by Lake-Effect

Um, speaking of being not enlightening...

• it's NMEA, not "NEMA"
• the balanced serial you're referring to is RS-422
• no, the main reason for NMEA 2000 is not for more waterproof connectors
• NMEA 2000 and CAN bus don't use (or derive from) TCP/IP

Perhaps it is time for a N2K refresher for everyone? Google is YOUR friend, too.

And

AIS serial transmission speed is 38400 baud.

[tanglewood]

Originally Posted by fdr14127

This is a not so enlightening discourse on the differences in wiring protocols between NEMA standard connections and Canbus connections. NEMA signals are transmitted over serial connections between talkers and listeners using wires and come in two flavors. Regular and 433 (or is it 422) for longer runs of the wires. The latter is usually used for long runs to the stern for the connections to the tiller pilot for example. The AIS talkers equipment transmits not 4800 baud but 13,500 for reasons that escape me.
NEMA2000 is a more modern bus which is derived from the automotive CANBUS primarily to supply more robust connectors in the marine environment (and so they can charge higher prices to the salty market). The automotive version I suspect would work just as well. These standards are derived from the computer network protocol of TCP/IP which in turn came from the attempt of the Univ of Hawaii to connect all the campuses together without setting poles between the islands and stringing wire. These latter bus systems and like shouting into a hollow pipe and require terminations and the each end of the organ pipe and tee connectors branching to the various devices. They use TCP/IP which is the protocol your PC is using to talk to the net. After research and reading, you understand what I am reporting here then you can move on to playing in the sandbox......Google is your friend.

Yeh, pretty much 100% wrong with respect to NMEA 0183 and NMEA 2000.