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NMEA 2000 Cables and Connectors
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There were 12 articles found in this category:
 What are the weights and dimentions of Maretron products?
Maretron products weights and dimensions can be found on attached pdf at the bottom of this article.
- Should I use double ended cordsets or should I build my own cables using bulk cable and field attachable connectors?
If possible, you should consider using over molded double ended cordsets since they are less expensive and they tend to be more reliable than cables made using bulk cable and field attachable connectors. Unfortunately, over molded double ended cordsets only come in a limited number of lengths, s ...
- What is a backbone or trunk line?
The backbone, or trunk line, is the main network line usually running stem to stern in the vessel. Each end of the backbone or trunk line has a termination resistor. Individual products are connected to the network using drop lines off the main backbone or trunk line. "Tees" are used to connect ...
- How do I know how much current an NMEA 2000 product will draw from the network?
Manufacturers of NMEA 2000 equipment are required to disclose the amount of current drawn from the NMEA 2000 network. The amount of current used from the network is expressed as a Load Equivalence Number (LEN) where each LEN is equal to 50mA. For example, a device that draws 0.5 amperes from the ...
- What is a Load Equivalance Number (LEN)?
A Load Equivalence Number or LEN is a whole number used to express the amount of current that is drawn from an NMEA 2000 network. One LEN is equal to 50mA. If a device draws 151mA of current from the network, then its LEN is 4. Note that the LEN is always roundedup to the next whole number.
- What is the maximum current that a single device may draw from an NMEA 2000 network?
The maximum allowable current that a device is allowed to draw from the NMEA 2000 network is 1 ampere. Devices requiring more than 1 ampere of current use a separate power supply connection, which is required to be isolated from the NMEA 2000 power supply (this prevents any possibility of ground ...
- What is a powertap?
Every NMEA 2000 network requires a power source, which is usually supplied by a powertap. The powertap is used to energize the 12 volt power and ground wires found within the NMEA 2000 cable.
- How many wires are there in an NMEA 2000 cable?
An NMEA 2000 cable contains five wires, two for 12 volt power and ground, two for the data pair, and one shield wire.
- Does Maretron make a waterproof USB cable for connecting the USB100 to a computer?
No, Maretron does not make a waterproof USB cable for connection between the USB100 and a computer. However, a waterproof cable can be built using the following parts, which can be ordered from http://www.digikey.com/ A-KAB-USBB-MS-1M-R A-USBPA-R A-USBPA-HOOD-R
- Does Maretron have a interface cable for Catapillar engine networks to the J2K100 device?
The MCF-2M-D12CAT cable is used to interface a J2K100 to a CAT marine power display. It is recommended that the MCF-2M-D12CAT cable should connect to one of two ports on the CAT display. The ideal connection should be the occupied twelve pin connector. (Note: some CAT marine power displays have ...
- I have an Onan generator with a power rating between 4-32kW, what Maretron adapter cable should I order to connect the generator to the J2K100?
The Maretron adapter cable MCF-2M-D12 (J2K100 adapter Micro female to Deutsche 12 Pin 2 Meter Cordset) connects an Onan generator with a power rating of 4-32kW to the J2K100.
- How do I check the health of my N2K cabling before powering my network?
The pin assignments for NMEA 2000 are the following: Pin 1: Shield (Bare) Pin 2: NET_C (+12VDC, Red) Pin 3: NET_S (Ground, Black) Pin 4: NET_H (CAN High, White) Pin 5: NET_L (CAN Low, Blue) Please make sure that: 1) All devices are connected to the bus 2) The bus has power (If you're us ...
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