Lowrance ELITE Ti2 Installation Manual page 24

24
Plan and install an NMEA 2000 network
An NMEA 2000 network consists of a powered backbone from
which drop cables connect to NMEA 2000 devices. The backbone
needs to run within 6 m (20 ft) of the locations of all products to be
connected, typically in a bow to stern layout.
The following guidelines apply:
• The total length of the backbone should not exceed 100 meters
(328 ft)
• A single drop cable has a maximum length of 6 meters (20 ft).
The total length of all drop cables combined should not exceed
78 meters (256 ft)
• The backbone needs to have a terminator at each end of the
backbone. The terminator can be a terminator plug or a unit with
built-in terminator
A
C
A
NMEA 2000 device
B
Drop-cable
C
Terminator
D
Power supply
E
Backbone
Powering the network
The network requires its own 12 V DC power supply, protected by a
3 amp fuse.
For smaller systems: connect power at any location in the backbone.
For larger systems: connect power at a central point in the
backbone to balance the voltage drop of the network. Make the
installation such that the load/current draw on each side of the
power node is equal.
Ú Note:
1 LEN (Load Equivalency Number) equals 50 mA current
draw.
Wiring | ELITE Ti² Installation Manual
A
B B
E
A
B
C
D