User manual LOWRANCE NMEA 2000 EXTENSION CABLE AND 120-OHM TERMINATOR

[. . . ] If it's working, it's already terminated. If you are using two 120-ohm terminators, it's best to connect them to sockets on the network as far from each other as possible. There are several ways to set up your NMEA 2000 network, and we'll explain them in the following pages. However, before we start, you need to understand the necessity of terminators. In order for it to work, a 1 NMEA 2000 network must have either one 60-ohm terminator or two 120-ohm terminators. [. . . ] As long as one of the units (and only one of them) has the NMEA 2000 Power cable connected to a power source, the LGC-2000 will operate, and both units will receive position information from it along the network. However, as shown in Figure 2, using one 60-ohm terminator leaves an empty, powered socket. To avoid this situation, we recommend the configuration in Figure 1. Remember, you can use either one 60-ohm terminator or two 120-ohm terminators, but always make sure every plug on the network is attached to something. In this example, your network would be set up with two different GPS units (or sonar-GPS combo units, or one of each) both receiving GPS signal information from the LGC-2000. If you wanted, instead of a secondary GPS unit, you could have the extra network port attached to a NMEA 2000 temp sensor. Then your sonarGPS combo unit would receive both the GPS signal from the LGC-2000 and the temperature information from the temp sensor. LGC2000 Sonar-GPS combo unit Two 120-ohm terminators Lowrance NMEA 2000 network with unit, GPS module and temp sensor. NMEA 2000 temp sensor 3 Or you could connect two sonar-GPS combo units to the network, and also attach an LGC-2000 and a temp sensor. To do that, we use the same cable configuration, but replace the two 120-ohm terminators with one 60-ohm terminator (as shown in Figure 2 earlier) and attach the empty socket to a temp sensor. Sonar-GPS combo unit LGC2000 Sonar-GPS combo unit One 60-ohm terminator NMEA 2000 temp sensor Lowrance NMEA 2000 network with two sonar-GPS units, a GPS module and temp sensor. When attaching terminators, you can only use either one 60-ohm terminator or two 120-ohm terminators. So if you have a full network using two 120-ohm terminators and you want to add one more sensor, just remove both terminators, attach the sensor to one socket and the 60ohm terminator to the other. If you wanted to add another port beyond that, you'd have to buy a new network expansion cable, and switch back to two 120-ohm terminators. That would leave you with one empty port on your network. You can continue expanding with network expansion cables until your network contains everything you want to include. The following figure shows an extensive example network. It includes two different temperature sensors (one at the water surface, for instance, and another in your live well) as well as the reading from a paddlewheel speed sensor on the transom and the GPS signal from an LGC-2000. The network would then share all of this information with a sonar-GPS combo unit mounted in the dash, and with a smaller sonar-only unit at the stern and another up on the bow by your trolling motor. In addition to all the units and sensors, you'll notice it includes two 120ohm terminators, and three network expansion cables. There's virtually no limit to the expansion possibilities, but we do recommend you keep your network to less than about 300 feet (about 100 meters) of cable. 4 As long as the network is installed properly, all three units would have access to all of the sensor information from every accessory attached to the network. NOTE: You probably noticed there's no transducer mentioned in that list (or anywhere else in this document). The sonar signal from a transducer is far too powerful for a NMEA 2000 network, so sonar readings cannot be shared. [. . . ] To locate an Eagle dealer, visit the web site, www. eaglesonar. com, and look for the Dealer Locator. Or, consult your telephone directory for listings. customers: LEI Extras Inc. , PO Box 129, Catoosa, OK 74015-0129 Call toll free in the U. S. , 800-324-0045, 8 a. m. Central Standard Time, M-F, or visit our web site www. lei-extras. com. [. . . ]