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Category: Nmea 2000 backbone vs drop cable

Nmea 2000 backbone vs drop cable

I'd like to tie and use everything together and share info across both units, the older unit as a back-up. Is this possible, and what additional fittings do I need? You just have to accommodate the differences in the wiring devices, but the networking remains compatible. As for whether or not the older devices will interoperate in the same way that newer devices will, the interoperation depends on the software in the devices, and if that software allows for the interoperation you desire, such as sharing of data between devices.

The association of the colors red and blue with wiring devices for NMEA networks is only used by Lowrance. The devices they call red are now actually no longer red but black. The devices that Lowrance calls blue are their own style of connector used only by them for NMEA in earlier implementations. I actually like those old blue connectors because they have a bayonet type retaining collar instead of a threaded collar.

There really is no term "red network" except as created and used by Lowrance. It seems that back a few years ago NMEA the organization did not really enforce a standard connector for the NMEA network wiring, and, even today, there are variations. For example, Raymarine is using their own style of connector for their network, which they have branded as SeaTalkNG. But at the present, most manufacturers are making devices with DeviceNET connectors.

If you have a legacy device with a Lowrance blue network connector and a legacy network already in place with blue connectors, I suggest the following: --segment the network wiring into two distinct segments, one using the old blue devices and one using the new DeviceNET devices; --buy if you can still find one a Lowrance adaptor cable with a blue connector on one end and a red connector on the other end, or, make your own such cable by splicing together an old cable and a new cable; --the new cable you bought or made will be used to connect the two segments of the network backbone; and, --plan to connect new devices you will add to the network to the DeviceNET segment, and leave the legacy devices connected to the old Lowrance blue connector network.

If you only have one legacy device with a Lowrance blue connector, I suggest the following approach as a better method to combine old and new: --create a new network backbone with all power, T-connectors, and terminators using the new DeviceNET wiring; --connect all the new devices to the network with their DeviceNET connectors; --make or buy one specialized drop cable with a DeviceNET connector at the network end and a Lowrance blue connector at the device end, and use this to connect the lone legacy device; --sell off the old blue network wiring devices to someone who is looking for them to support their older network.

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These blue wiring devices are getting hard to find now, and you might be able to sell them for a decent price. Usually in NMEA wiring the extension cables will have connectors of different gender on each end.

This allows for the network cables and devices to be daisy-chained together. When making an adaptor cable you should follow this pattern, that is, have a plug connector on one end and a socket connector on the other end. In NMEA cables there is a practically universal color coding of the conductor insulation that follows this pattern: --Red is the network power positive circuit --Black is the network power negative circuit --White is the network signal HI circuit --Blue is the network signal LO circuit --Shield or drain is the network ground circuit If you want to make a custom cable, you can typically just cut two existing cables, one of each connector type, in half.

Then take one half of each type cable and connect it to one half of the other type, observing the gender alternation recommended above. The wiring will just be color-to-color, that is, red to red, black to black, and so on. You do not have to fuss or worry about the shield at the splice enwrapping the inner conductors. Just splice the shield as its own circuit. It is generally easier to make these splices if you do not try to make them in-line.

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The other surprise I just had is that the internal antenna in the new GPS doesn't work where I have the unit mounted in the dash. The older unit has an LGC antenna connected to the network. Will the new unit accept position data from the older unit's antenna? No, they do not. What is the GPS unit with the internal antenna that will not work? The only concern is to protect the unused sockets of the four-position device from getting wet or allowing dirt to enter.

I don't know of any DeviceNET blank connectors. You may have to use electrical tape to cover the unused connectors. The GPS receiver in your new device appears on the network as a separate device from the chart plotter display. In the Lowrance configuration menu you should find an option to select the source for a GPS receiver on the network.Last Topic: Autopilot crasches every 24 hours?

Last Topic: Solution for mcafee antivirus by marjor jackson on Feb 18, Last Topic: Garmin branded inReach? Last Topic: Bought a used chartplotter by drfeno on Mar 22, Last Topic: New Panbo website: what's good, what's bad? I may install a NMEA network backbone in my small boat. If this is all reasonably true, then:. I am not clear on where the adaptor is employed. There seems to be two possibilities:.

In other words, do I have to splice in a Raymarine T-connector and use a Raymarine drop cable to the Raymarine device? From close study of the illustration, it looks to me like the adaptor parts have the SeaTalkNG connector which is used in the backbone.

nmea 2000 backbone vs drop cable

If that is correct, I would appreciate confirmation, or if not, correction. I looked for some prices on these parts without finding a listing. I am afraid that buying them as parts is probably going to be expensive. I'd appreciate a pointer to where the prices in US-dollars might be listed. Also, it seems like a lot of extra nonsense to interconnect two products that are supposed to be compatible. Works fine. In that case you need to cut the cable and use a female field-attachable N2K connector.

STng connectors do not have gender, which is nice, but the white drop connectors are different from the blue backbone connectors. PS The Etec electronic gauges are made by Lowrance but that doesn't mean they work exactly the same way Lowrance gauges do.

I believe Evinrude includes some non N2K standard commands and info in their "own" gauges:. Ben--Thanks for the advice on the proper Raymarine Spur cable to use.

I will give it a try. This adaptor has a DeviceNet connector with pins "male". That's what you need to plug into a DeviceNet T-connector as the drop cable. As it turns out, I could not get either of those cables to resolve the ambiquity, and I made my own by cutting some other cables in half and splicing them.

Sorry, Jim; I get gender confused sometimes! You are absolutely correct that you need a male devicenet connector at the tee end of every drop or "spur" in STng talk because a standard tee has two female and one male connectors.If you click the "add to Cart Button" on our website, information on accessories, shipping prices and more will be provided.

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The Basics of NMEA 2000

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nmea 2000 backbone vs drop cable

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The Basics of NMEA 2000

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It is installed on the backbone cable and uses one end of the T-Connector for the drop cable. It should be installed on one side of a Micro-Tee. No need for multiple T- Connectors, offers a more cost effective and streamlined solution. Part replaces part Length 1 Meter.

Length 6 Meter. It is installed on the backbone cable and uses one end of the T-Piece for the drop cable.

Length 10 Meter. This cable can not be used as a drop cable. Simply attach the integrated 3-meter power cable to the boats power supply and you are ready to add your devices!JavaScript seems to be disabled in your browser.

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nmea 2000 backbone vs drop cable

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Your e-mail:. Return Policy. Return Policy Hodges Marine accepts returns for up to thirty 30 days after shipment. Who Bought This Also Bought. Add to Compare.We get asked this electronics question more than just about any other, from customers who have a perfectly operating SeaTalk 1 network and want to add the SeaTalk 1 data to the NMEA bus.

The article deals specifically with older Raymarine products that operate on the proprietary SeaTalk 1 network. Purchases from our web store help keep this site FREE! The SeaTalk 1 to SeaTalk ng converter is actually a small electronic signal converter that has operational software doing the conversion.

This converter is not just a busbar or fancy terminals stripas some have described it.

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The device below is actually a small processor running software. Important Notes: 1 If the E converter is used only as a drop device, to port SeaTalk 1 over to NMEAand is not at the end of a back bone, or in a backbone, you would not use any terminators in the blue ports.

Terminators are only used at either end of a back bone! One terminator at each end of the back-bone.

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Having multiple sources of power can create a potential for ground loops, if not wired correctly. Would you like to see more articles like this? Is so feel free to donate, support the site and keep it growing. Your donations help keep the content coming and also help keep it free. This site uses Akismet to reduce spam. Learn how your comment data is processed.

Good luck and happy boating! Tags: Raymarine SeaTalk 1 to Seatalk ngng. Leave A Comment Cancel reply Comment. Toggle Sliding Bar Area.See above diagram. Mini cable system for networks requiring more than 4 amps but, less than 8 amps per network leg.

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nmea 2000 backbone vs drop cable

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Please make sure that you are posting in the form of a question. Please enter a question. Large gauge cable to provide better network reliability and reduce voltage drop for critical backbone connections.

Super flexible cable for ease of installation and wire routing. Easy to install starter kits include all necessary components needed to build a new NMEA network.

All backbone cables and backbone accessories come with a yellow coupler to make identifying the network backbone easy. Drop cables and accessories that should be connected to drop cables all come with black couplers.

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The red tee of the power tee makes finding the power connection as easy as possible in hard to reach consoles or compartments where batteries may be stored. In specialized applications, for example connecting a screen that also has its own power connection, a power isolator is needed to ensure that the NMEA network only has one source of power. This can be managed and easily identified with the blue power isolator. If you are unsure of the application for this product please contact a NMEA certified installer for more info.

Ancor backbone cables are produced with a larger gauge size cable than other cables on the market to help increase network reliability and reduce voltage drop across a network backbone which can at times span long distances.

Ancor drop cables, which are typically a much shorter distance, are produced with a smaller gauge wire than our backbone cables allowing them to be routed more easily through bulkheads or behind panels. Backbone cables which are made of the larger gauge wire are easily identified by the yellow couplers on each end which connect to yellow couplers on tee connector. Skip to main content. Image Unavailable Image not available for Color:.

Brand: Ancor. You can return the item for any reason in new and unused condition: no shipping charges Learn more about free returns. How to return the item? Go to your orders and start the return Select the return method Ship it!

Building an NMEA 2000 Network

Style Name: Backbone Cables. Backbone Cables. Drop Cables. Starter Kit. Made in the USA or Imported. Buy new:. Ships from: Amazon. Sold by: Amazon. FREE Shipping on your first order. Arrives: Monday, Oct


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