Installation manual

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Wiring | NSO-II Installation Manual
¼ Note: Most NMEA 2000 devices can be connected directly to a Simrad SimNet backbone and
SimNet devices can be connected to a NMEA 2000 network by using adapter cables.
¼ Note: Simrad devices with Micro-C NMEA 2000 connectors are fully compatible with a Sim-
Net network by using a Micro-C to SimNet adapter cable.
¼ Note: IS40 displays have two Micro-C connectors, and can either be connected inline with
the backbone, or wired individually off a drop cable. Connecting from device to device is
known as ‘daisy chaining’ This network topology is not offi cially NMEA 2000 compliant.
Power the network
The network requires its own 12 V DC power supply protected by a 5 amp fuse or breaker. For
vessels fi tted with 24 V systems, use a DC-DC converter to supply 12 V.
Connect power at any location in the backbone for smaller systems.
For larger systems introduce power at central point in the backbone to “balance” the voltage
drop of the network.
¼ Note: If joining to an existing NMEA 2000 network that already has its own power supply, do
not make another power connection elsewhere in the network, and ensure existing network
is not powered by 24 V DC.
¼ Note: Do not connect the NMEA 2000 power cable to the same terminals as the engine start
batteries, autopilot computer, radar, bow thruster or other high current devices.
The following drawing demonstrates a typical small network. The backbone is made up of
direcly interconnected T-piece joiners and an extension cable, which is terminated at each
end.
+
_
12 V DC
TT
9
8
5
7
6
4
3
21
9
1 GPS antenna
2 NSO-II Marine Processor
3 Broadband radar interface
4 SonicHub
5 ‘Drop’ cables (should not exceed 6m (20’) each)
6 Power cable
7 Micro-C T junctions
8 Backbone
9 Micro-C terminator (one male, one female)
NSO-II_IM_EN_988-10392-001.indd 13 9/07/2013 3:53:16 p.m.