NEMA2000 Backbone/Drop Cable
In an NMEA2000 network system, the are two critical components for building network communication. They serve distinct functions - the Backbone Cable provides the main data and power transmission, while the Drop Cable connects NMEA2000 devices to the backbone line, ensuring efficient, stable network operation.
The Backbone Cable is the main trunk line to build NMEA2000 network. It links various T-connectors to form the network's backbone structure. It is responsible for transmitting both data signals and power, providing a stable communication channel and power supply for all connected devices. This ensures synchronized communication and cooperative operation among devices, maintaining the network's efficiency, stability, and reliability.
- A Backbone cable needs to be compliant with the NMEA2000 standard to guarantee fast and secure connections with T-connectors, Drop Cables, and other network components.
- 120 Ohm Termination resistors must be installed at both ends of the NMEA2000 network to prevent signal reflection, which can cause network instability or communication failure.
- Designed for long-distance transmission, commonly available in lengths ranging from a few meters up to several tens of meters.
- The total length must not exceed 100 meters to avoid signal attenuation or communication issues
120 Ω NMEA2000 Terminator (M12 A Code 5 Pin)
The Drop Cable is the branch line that connects N2K devices to the Backbone Cable via T-connectors, ensuring stable communication between the device and the Backbone. Drop Cables also provide flexible wiring and enable network expansion.
- Connects marine devices to the NMEA2000 network through T-connectors, avoiding signal interference caused by daisy-chaining devices.
- The length of a single Drop Cable must not exceed 6 meters to maintain signal quality.
- The total length of all Drop Cables in the NEMA2000 network system should not exceed 78 meters to minimize interference risk.
- It is strictly forbidden to connect multiple devices to the same Drop Cable; each device requires an individual Drop Cable connection.
- All NMEA2000 devices should connect to the Backbone via T-connectors & Drop Cables to ensure a clear and reliable network topology.
- To ensure stable and reliable communication, only certified cables and connectors that comply with the NMEA2000 standard-such as M12 A-Coded 5-pin cable-should be used.
NEMA2000 Tee Connector
