1. Welcome to the Navico Training Academy
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2. SimNet Simrad Intelligent Marine Network

4. Standard Interfacing NMEA183 - single transmitter multiple receivers
Point to point connection
One receiver can only listen to one transmitter
Complicated installation
Complicated setup

5. SimNet Integration Objectives: Easy installation
Automatic system setup
Unlimited data sharing
A solution for the future

6. SimNet Network

7. What is SimNet ? Simrad intelligent marine Network
A complete intelligent network system for easy installation and integration of marine electronics
Easy installation
Easy setup - Plug and Play approach
Reliable data transfer
NMEA2000 compatible.
SimNet

8. SimNet Specifications
Based on CAN bus, Controller Area Network, from the automotive industry and NMEA2000
Up to 50 products in one system (Up to 250 network adresses)
Signal rate: 250 Kbit/sec. 50 times faster than NMEA183
Maximum total SimNet cable length: 120 (+30) meter
Maximum current: 5 Amps
Guaranteed transfer of priority data
Automatic source selection
Automatic multi source management
Ready made cable and plug system

9. Cable and Plug System Highly innovative cable and plug system !
Thin cables with small 9 mm plugs, easy to run
Watertight, IP66
Ready made cables
Accessories readily available from shop stands
3 year active use in the field

10. Competing plug and cable systems
NavNet
Must use a Hub – star coupled
Complicated to configure
Not water proof
Not NMEA2000 compatible
SeaTalk2
Large and bulky plugs
Not NMEA2000 compatible
No support for multiple sources
NMEA2000
Expensive plug and cable system
Two connector sizes approved
Drop cable only (No Daisy chaining)
The winner is SimNet Control

11. SimNet Cables Network Load 1NL= 50mA Data pair: AWG 24 (0.24 mm2)
2 x 2 twisted pair
Net-H
Net-L
Data
Net-S
Net-C
Power
Data pair: AWG 24 (0.24 mm2)
Power pair: AWG 20 (0.5 mm2) Resistance = 2*0.03ohm/m

12. SimNet Integration Power cable w/termination Ready made cable w/plugs
Tee joiner
Active Tee, AT10, AT15, AT44

13. Typical power boat installation

14. Sailboat installation with long MHU cable

15. Minimum SimNet System

16. SimNet, Robnet and Roblink
Compass and second control unit connected via Robnet2 for safety
Dual Station via High Speed Data Link
IS15 system
is interconnected via Roblink
AT44
Active Tee to NMEA2
AT15
Active Tee to NMEA

17. SimNet System on NMEA2000 NMEA2000 Backbone
SimNet to NMEA2000 cable
NMEA2000 Backbone
Term.
Term.
Active-T
NMEA2000 T- joint
NMEA 2000 Product 1
Net power supply or 12V battery
Certified NMEA2000 Level A or B products only !

18. SimNet System Connections
NMEA 2000 product
e.g. smart depth
transducer
AT44
Active Tee

19. SimNet Auto source Selection (AP28)

20. All data available to all products !
AT10 NMEA0183 Converter
All data available to all products !

21. Product C will not get data from B
AT10 NMEA0183 Converter
Product C will not get data from B

22. Network Considerations
Remember !
Proper network installation and termination is important !
12 or 15VDC
24V, V 240V

23. Good SimNet Installation
Run SimNet cable separated from power cables (110/240V or 12/24V)
Pay special attention to cables supplying high currents. (electrical motors, radar's, thrusters….)
It is recommended to secure long SimNet cables max. 50 cm (20”) from the SimNet plug.
Max. Cable length 120 m (400’) including drop cables.
Single drop cable max. 6 meter (20’) - total drop cable length max. 60 meters (200’)

24. SimNet Questions?