User manual LOWRANCE NMEA 2000 GENERAL INFORMATION PAMPLET

[. . . ] 988-0154-173 NMEA 2000® Networks General Information The NMEA 2000 Network DeviceNet is the communication bus standard developed by the National Marine Electronics Association (NMEA) for use in boats. Lowrance has introduced a line of products that can communicate over a NMEA 2000 network, helping you get the most out of this technology. This instruction sheet will show how a NMEA 2000 network is created, configured and installed. Read the next few pages to become familiar with some of the following terms: NMEA 2000 Network/LowranceNET, NMEA 2000 Bus/Network Bus, Network Backbone, Network Nodes and Linear Architecture. Setup and Installation of NMEA 2000® Network or LowranceNETTM A NMEA 2000 network is a communications link between two or more devices that transfer NMEA 2000 information. [. . . ] Depending on your configuration, you may not use all of these wires. Caution: All of the wires in the power/data cable have bare ends for easier installation. The bare ends on any unused wires could cause an electrical short if left exposed. If the cable is not long enough, splice #18 gauge wire onto it. The display power cable has two wires, red and black. Red is the positive (+) lead, black is negative (­) or ground. Make sure to attach the in-line fuse holder to the red lead as close to the power source as possible. If, for example, you have to extend the power cable to the power bus or battery, attach one end of the fuse holder directly to the power bus or battery. This will protect both the unit and the power cable in the event of a short. This unit has reverse polarity protection. No damage will occur if the power wires are reversed. The unit, however, will not work until the wires are attached correctly. 9 Power Diagram A To unit Mandatory network power-off switch NMEA 2000 Power Cable 3-amp fuse Shield Display Unit Power Cable 3-amp fuse Black Red Recommended display unit power-off switch Data Cable Black 12 volt DC power source Use this method if you are powering the display unit and a GPS module or the display unit and a NMEA 2000 network. The network and any NMEA 2000 devices, including the GPS module, will not operate unless the NMEA 2000 Power Cable is connected to power. The NMEA 2000 power cable must be connected to power even if your only NMEA 2000 device is the GPS module and it is connected to the display unit's Network socket. (Never connect multiple power sources to a NMEA 2000 network. If you have a network that is already powered, see diagram B below. ) 10 Power Diagram B To unit Red wire with 3-amp fuse Display Unit Power Cable All unused Data or NMEA 2000 power wires should be capped with wire nuts and electrical tape to prevent shorts. Data Cable Black wire Recommended power off switch 12 volt DC power source NMEA 2000 Power Cable Use this method if you are only powering your display unit and are not powering a NMEA 2000 network or any NMEA 2000 accessory device, including a GPS module. The method in diagram B is also used when your display unit is connected to a NMEA 2000 network that is already connected to power. (Never connect multiple power sources to a NMEA 2000 network. ) Powering a NMEA 2000 Network Bus A NMEA 2000 bus must be connected to a power source to operate. NMEA 2000 devices draw their power from the network bus. If you have a pre-existing NMEA 2000 network installation, it may already be connected to another power source. If you are not sure about a network's power status, consult the boat manufacturer or dealer. If your NMEA 2000 bus is already powered, you can ignore the NMEA 2000 Power cable and use the method shown in Power Diagram B above. [. . . ] NMEA 0183 developed over a period of many years and changed dramatically during that time. Development was so drastic some of the older NMEA 0183 devices (NMEA 0183 ver. 1) are no longer compatible with NMEA 0183 devices developed recently (NMEA 0183 ver. NMEA 2000 devices WILL NOT communicate with NMEA 0183 devices. [. . . ]