Lowrance electronic 000-0124-69 installation instructions HDS Units, Inline Terminator Cable

NMEA 2000 Network

Installation Instructions

This instruction sheet covers the configuration and installation of a NMEA 2000 network.

HDS Units

If you have an HDS unit, you must make a one-time purchase of a NMEA 2000 Starter kit to create a NMEA 2000 network.

NMEA 2000 Starter kit (p/n: 000-0124-69)

2-ft extension cable	120 ohm male terminator
15-ft extension cable	120 ohm female terminator
2 T connectors	Power node

Inline Terminator Cable

Some Lowrance LCX and LMS units and LGC-3000 antennas pack with an inline terminator cable — a cable with a 120 ohm terminator built into each end. You must discard the inline terminator cable and purchase a NMEA 2000 Starter Kit if you want to add more devices to that type of network.

Network Construction

Top of T connector

To add a power node, display unit or device to a NMEA 2000 network, you MUST connect it to the bottom of a T connector as shown in the diagram on the right.

The top of a T connector can be connected to other T connectors, a terminator or to an extension cable that runs to other T connectors in a different part of the boat.

	Bottom of T connector
	NMEA 2000 Network Components
Nodes	T connector connected to a NMEA 2000 device
Terminators	Male and female 120 ohm terminators are connected to
	network at opposite ends of the NMEA 2000 backbone
Backbone	Consists of network cabling, T connectors and two 120
	ohm terminators