Simrad NSX, Руководство по установке

Страница: 19 / 32

19
A
A
A
C C
D
B
B
B
B
E
A
A NMEA 2000 device
B Drop cable
C Terminator
D Power supply
E Backbone
Power the NMEA 2000 network
The network requires its own 12 V DC power supply, protected by a 3 A 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.
¼
Note: 1 LEN (Load Equivalency Number) equals 50 mA current draw.
4
LEN
(8 LEN) (8 LEN)
T T
2
LEN
2
LEN
3
LEN
1
LEN
3
LEN
1
LEN
¼
Note: Do not connect the NMEA 2000 power cable to the same terminals as the engine start
batteries, autopilot computer, bow thruster or other high current devices.