NMEA 2000 alustik

The Garmin NMEA 2000 starter kit (reference 010-11442-00) is designed to set up a basic NMEA 2000 network aboard your vessel. It enables "plug-and-play" interconnection of marine sensors and displays, facilitating data exchange between different electronic devices.

NMEA 2000 is a "plug-and-play" communication standard used to connect marine sensors and displays on ships and boats. It is considered the successor to the NMEA 0183 serial data bus standard, enabling simplified data exchange between different devices.

No, NMEA 2000 is the successor to NMEA 0183. Although it replaces NMEA 0183, NMEA 2000 devices and networks are not directly compatible with NMEA 0183 devices without a specific gateway or converter, which is not included in this kit.

Garmin uses NMEA 2000 micro-connectors on its devices, sensors, and T-connectors. These connectors are compatible with other NMEA 2000 micro-connectors, cables, and NMEA 2000-certified devices.

The backbone is the main communication path of the NMEA 2000 network. It must be built in a linear manner by connecting the T-connectors to each other via their sides, either directly or using backbone cables. The top of a T-connector is exclusively used to connect a device or the power supply to the network, and not to route the backbone.

120-ohm terminators must be installed at each end of the NMEA 2000 backbone. Proper termination is critical to ensure signal integrity across the entire backbone length and guarantee correct network operation.

Each NMEA 2000 device must be connected to the backbone using a T-connector. The device's drop cable connects to the top of the T-connector, while the T-connector itself is part of the linear backbone.

The NMEA 2000 network must be connected to a 12 V DC power source. It is critical not to connect it to a source exceeding 12 V DC (e.g., 24 V DC), as this could damage components or devices connected to the network.

Yes, it is mandatory to connect the NMEA 2000 network to the power supply via a switch or another external switch. If the network is directly connected to the battery, it could drain it when the boat is not in use, as some NMEA 2000 devices remain powered as long as a power source is present.

It is recommended not to power a NMEA 2000 network at more than one point without using a power isolator between the two power connections of the network. This prevents potential issues caused by multiple power sources.

Drop cables, which connect a NMEA 2000 device to the backbone, are limited to a maximum length of 6 meters (20 feet).

The maximum length for a single NMEA 2000 backbone cable is 100 meters (328 feet). Backbone cables longer than 6 meters can only be used as backbone cables, not as drop cables.

The LEN (Load Equivalency Number) is a simplified value representing the amount of current a device draws from the NMEA 2000 network. A LEN of 1 equals 50 mA. This value is used to calculate power requirements and balance the power budget of your NMEA 2000 network.

Yes, the 2-metre NMEA 2000 power cable included in the kit (Garmin part number 010-11079-00) has a 3 A fuse to protect the network.

Yes, this kit provides the core components (T-connectors, terminators, cables) that can be used to start or extend an existing NMEA 2000 network, following the linear backbone construction principles and proper termination.

A poorly constructed backbone can prevent the network from operating correctly or lead to unexpected performance issues. It is essential to follow linear construction rules, where T-connectors attach to their sides, and terminations are placed at the ends.

The NMEA 2000 power cable must connect to the top port of a T-connector, not the side port. It can be placed at either end of the backbone or in the middle, depending on the backbone length and the power requirements of the connected devices.

Yes, Garmin offers field-installable connectors (part numbers 010-11094-00 for male and 010-11095-00 for female) that can be used to create custom-length backbone or drop cables, or to shorten existing Garmin cables.

For the NMEA 2000 network to operate correctly, the supply voltage drop between the T-connector where power is supplied and the furthest NMEA 2000 device must not exceed 1.67 VDC.