SeaSmart.Net Adapter Manual Version1.3
10
Connections
Installation of SeaSmart.Net adapters typically requires connecting the appropriate interface cables to each
network. Power is supplied from the NMEA 2000 network and is electrically isolated. When powering
from the NMEA 2000 network, Care must be taken to ensure not to exceed maximum current load of all
devices. Max load for SeaMart.Net adapters is 6 LEN
Two connectors on the input side provide the interface to the source networks (USB/Serial and/or NMEA
2000) The USB/Serial connector is a dual interface with only one active at a time (USB or RS232). The
appropriate USB or Serial interface cable must be used. The NMEA 2000 connector requires a supplied
Micro C adapter cable to connect to a NMEA 2000 bus “T” connector. SeaSmart.Net uses Opto-isolators
and thus is power and ground isolated from the NMEA 2000 network. SeaSmart.Net adapters only draw 1-6
LEN when powered via external source. When using SeaSmart.Net as a NMEA 2000 Gateway, the
USB/Serial interface is used off-line for configuration and firmware updates or as a second data port
accessible via the network.
For Ethernet devices the default configuration is to allow an External DHCP server to assign a network
address to the device. Access to the NMEA data is then done with TCP connection to the address or via
Web Browser to the same IP Address using Port 80. The Ethernet interface uses a supplied custom RJ45
cable with water-resist locking connector. The opposite RJ45 plug can be directly attached to any network
device or router. The Ethernet cable is a “straight-through” type.