Tech Support

NMEA 2000


+ What is the maximum length of NMEA 2000 cable that can be used to connect my device to a T-Connector?

The maximum length of a NMEA 2000 cable that can be used to connect any device or accessory to a T-Connector is 6 metres (20 feet).

If a 6 metre cable is not long enough to connect the device or accessory to the T-Connector, a longer NMEA 2000 backbone cable will need to be connected into the backbone of the NMEA 2000 network. This cable would be installed between two T-Connectors in the NMEA 2000 backbone. The distance between any two points on a NMEA 2000 network must not exceed 100 m (328ft).

+ How many devices can be connected to a NMEA 2000 Network?

The NMEA 2000 network will work properly as long as there is no more than a 3 VDC drop in the supply voltage between the power source and the NMEA 2000 device located farthest from the power source on the NMEA 2000 network. To determine the voltage drop in your NMEA2000 network, your certified NMEA 2000 installer will use the following equation:

Voltage Drop = Cable Resistance (ohms/m) x Distance (from the battery to the farthest device, in metres) x Network Load x 0.1

'Network Load' equals the sum of Load Equivalent Numbers (LEN) between the battery and the end of the network. The LEN for each device should be visible on the device or provided in the device documentation.

+ What marine devices or accessories are powered by the NMEA 2000 network?

FUSION uses the NMEA 2000 network to share data between devices and remote control devices. Our head units are powered using a directly connected power cable that is connected to the power source of the boat. Our NRX200 remote controls are powered from the NMEA 2000 network.

• MS-IP700 Marine Stereo for iPod (powered directly from supplied power cable)
• MS-AV700 Marine DVD Stereo (powered directly from supplied power cable)
• MS-NRX200 Remote Control and NMEA 2000 Display (powered from the NMEA 2000 network)

+ What NMEA 2000 data does my NRX200 Remote Control display?

127250: Vessel Heading (Magnetic Heading, Correction, Deviation)
128259: Speed Water referenced (Speed Water, Speed Ground)
128267: Water Depth (Depth at transducer, transducer offset)
129025: Position Rapid Update (Latitude, Longitude)
129026: COG & SOG Rapid Update
129029: GNSS Position Data (Date, Time, Latitude, Longitude, Altitude)
130306: Wind Data (Speed, Direction, Reference)
130310: Environmental Parameters (Water Temperature, Outside Ambient Air Temp, Atmospheric pressure)
130311: Environmental Parameters (Deprecated) (Temperature Instance, Humidity Instance, Temp, Humidity, Atmospheric Pressure)
130312: Temperature (Instance, Source, Actual)
130314: Actual Pressure
130577: Direction Data (Course Over Ground, Speed Over Ground, Heading, Speed Through Water)
129284: Navigation Data (ETA)

+ What are my options for connecting FUSION remote controls to FUSION stereos?

MS-NRX200 Marine Wired Remote Controls can be installed throughout the vessel to provide full control of multiple FUSION marine stereos, creating flexible zone control and NMEA2000 monitoring solutions. The MS-NRX200 is a plug-and-play device with two connection options:

Connect the remote control to your FUSION Marine Stereo with the standard cable kit provided with your purchase. The standard cable kit supplied with your product is NOT NMEA 2000 compatible.

1 x 6M Extension Cable
2 x T-Connector
1 x Terminator (Male)
1 x Terminator (Female)

Note: If you install the remote control using the standard FUSION cable kit provided with the remote control, NMEA2000 repeater functions will not be available.

An existing NMEA 2000 network can be used to connect the remote control to your FUSION Marine Stereo. FUSION NMEA2000 connection kits are available separately for this purpose.

The FUSION cable kit MS-N2KCONN will be required for each FUSION device connected to the NMEA2000 network.
MS-N2KCONN - NMEA2000 Connection Pack
1 x NMEA2000 T-Connector
1 x Drop Cable FUSION to NMEA2000 Micro-C5

The remote control can be configured to display available NMEA2000 data on the network such as water depth, vessel speed and basic navigation data. Refer to the section "What NMEA 2000 data does my NRX200 Remote Control display?" for a full list of NMEA 2000 sentences displayed by the remote control.

+ What FUSION marine devices and accessories are NMEA 2000 compatible?

FUSION makes devices that are NMEA 2000 compatible. These devices use NMEA 2000 to communicate with each other. NMEA 2000 is a faster language protocol than NMEA 0183 and will allow much more data to be shared between devices.
Here is a list of NMEA 2000 compatible FUSION products:

• MS-IP700 Marine Stereo for iPod

• MS-IP700i True Marine Entertainment System for iPod

• MS-AV750 True Marine Entertainment System with DVD/CD system

• MS-UD750 True Marine Entertainment System with UNI-Dock

• MS-NRX200i and MS-NRX300 Remote Control and NMEA 2000 Display

• MS-RA205 True Marine Stereo

+ What is NMEA 2000?

NMEA 2000 is a set of marine electronics standards enabling a 'multi-talk/multi-listen' network. This means that there can be different manufacturers' devices on a vessel sending and receiving data simultaneously.

This is an open network based on Controller Area Network. The network controls electronics, electrical, and engine data all on the same network. One advantage of NMEA 2000 is that data and power can both be carried on one cable.

The data is transferred at 250 kilobytes a second which is fifty times faster than it is with NMEA 0183. NMEA 2000 incorporates standard connectors and cables for use among all manufacturers adhering to this standard. This makes NMEA 2000 a "Plug and Play" system with a real time data stream.

For more information on NMEA 2000, visit NMEA's website at

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