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installation AIS to Simnet

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Sianthis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sianthis Quote  Post ReplyReply Direct Link To This Post Topic: installation AIS to Simnet
    Posted: 28 January 2010 at 18:27
I've bougt an Easy AIS 2e generation(Weatherdock) for the AIS signal. This device deliveres NMEA 0183.
In my boat lies a simnet backbone straight to my Simrad NX40 plotter.
Can i connect this easy ais by a AT10 converter to the simnet, or do i have to connect it straigt to the plotter? 
 
Does anybody has experience by connecting such an AIS to the simnet.
 
Any suggestions are welkom
André
S/Y Sianthis
Hanse 375 (depth 1.95, three cabins, teakdek, main sheet traveller in cockpit)
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Peter Russell View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Russell Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2010 at 19:45
Hi
Not sure if the AT10 passes the correct NMEA sentances for AIS.  I've a Raymarine plotter and the AT10 passing Simnet (NMEA2000) across to the plotter along with the AIS data multiplexed in to the Raymarine.  There have been references on here as to the lack of sentances across the AT10, but I've not had a problem.
My suggestion would be to run a seperate NMEA cable (normal ethernet cable is good for this) from the AIS up to the plotter.  The following link is the Simrad documents page and there is an article on there about connecting AIS into the plotter and the cable required.  Hope this helps.
 
Peter Russell

Hanse 370 hull 499 "Outnumbered"



http://outnumbered.the-russells.net
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ligeia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ligeia Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2010 at 23:33
I have the AI50 connected through the Simnet network to the NX40. It was built on my request with the whole installation on my new boat. I could not describe further the details of the connection but it works perfectly.


"Teles", Hanse 370 #695
Port Fréjus (France)
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Peter-Blake View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter-Blake Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2010 at 07:51
I do have the NX40 and the easy ais on my boat since last spring.
I did not (have all my papers on the boat) connect the easy ais to the simnet. I connected it straight to the NX40 (I think the white connection position). You need a special cable for NMEA/Smartcraft.

The reason is very simple. AIS uses a much higher baud rate than the simnet system.

Simnet: 4800 baud
AIS Standart: 38400 baud

This way it works on my boat perfect.



Alternatively you may try also to reduce the baud rate in the easy ais. (I did not do this as it was not recommended to me, and i do not know if it works. )For changing the baud rate in the easy ais look here under 1.2.6:


http://www.easyais.de/dateien/documents/erste_generation_easyais_easysplit_070627_1239691486.pdf


Edited by Peter-Blake - 29 January 2010 at 08:02
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter-Blake Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2010 at 08:19
BTW: Asking others who have also this NX40 and the ais and radar on their boats.

Does anybody of you see in the radarpicture the ais information too? (Not only in the map)!
As far as i know on Raymarine this is no problem. I was this week on the Düsseldorf boat show and asked the simrad people why it does not work on my nx40. they told me it should. But they were not able to show it to me on the displays shown on the boatshow.

The foto shows how it looks on raymarine (see the grey triangles)

To me it would be very interesting to see the aistargets shown on the radarpicture too, espeacially if only working with radarpicture
.

Edited by Peter-Blake - 29 January 2010 at 08:33
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shaukaas Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2010 at 10:00
The NX40 is not capable to show AIS information on the Simnet bus. The reason for this is the AT40 dongle do not convert AIS sentences from the Simnet/NMEA2k bus (to the NMEA0183) interface on the NX40.

To be able to use any kind of AIS, including Simrad's own products, you will need to arrange separate cabling for the NX40 - to the NMEA0183 input. (I think this is on the same plug as for the engine data, but I'm not absolutely sure. It's all reflected on Simrad FAQ pages for the AI50.)

The solution Simrad chose to integrate the NX40 into Simnet, by using a AT40, is in my opinion not a good solution. I have therefore returned my unit back to the dealer, as it is not fully compatible neither with AI50, NAIS300, RS82/87 nor WR20.

I have also been in a great discussion with the Norwegian Simrad distributor, ProNav, in regards of the missing functionality for the unit. As they were not interessted in neither listening to my point of view, nor give me a proper explanation in technical terms, or documentation wise - I will  consider reporting the marketing from Simrad as a fraud, to the Norwegian consumer watchdog authorities; as the promise through their marketing that WR20 is fully compatible with all Simnet capable Simrad products. Well, the NX40 is not compatible with much at all, not even their own AIS units!

The NX-series, and at the moment also the NSE-series, are to my knowledge the only Simrad chartplotters not being compatible with i.e. the WR20. The old CX's were all working according to my information. It seems like development has removed actual functionality, well camouflaged behind eye-candy and nice-to-have functions.

I'm now considering the new NSE 8, as this have a full Simnet and also NMEA2k interface. This unit should possible to be used for all kinds of future applications just by adding in new software, as the interfaces are now not longer the problem. But then, again, you're dependent on Simrad's will to actually develop new software...

Also I consider using a 12VDC Intel Atom based PC below deck, with a waterproof touch display at the helm. The last option gives more opportunities, such as weatherrouting and flexibility, but also more frustration, troubleshooting and hours of work to get to work properly. So for now - I'm without anything... Confused


S/Y Nadun - Hanse 320#171

LG3600 - NOR13510


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter-Blake Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2010 at 10:04
I send this question to simrad the same time by mail as i posted the post above.
Only one hour later I got a answer from simrad.
Very fast as i think.

The answer in some short words:
Following the simrad technician it is not possible to have a ais-overlay on the radarpicture of the nx40 or nx45. They wrote, that they will think about a software update with this function.

Lets see how long it will take
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Sianthis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sianthis Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2010 at 17:25
Thanks everybody, it seems the best way to connect it straigt to the nx40 like Blake did. According to him it works perfect.
 
From Simrad in Germany i got the answer as below.

Guten Morgen,

 

Der NX40 kann die AIS Daten anzeigen. Sie benötigen ein Y-Kabel (Artikel Nr. AA010115), welches Sie direkt mit dem NMEA 0183 Ausgang des AIS Receivers verbinden.

 

A very quick answer i think.

André
S/Y Sianthis
Hanse 375 (depth 1.95, three cabins, teakdek, main sheet traveller in cockpit)
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shaukaas View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shaukaas Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2010 at 20:34
This works for receiving AIS data, but what if you want to send some AIS data? Let's say you buy a NAIS300, and want to configure ie. your destination. Not possible from a NX40... (But I do not know is the NAIS300 have this possibility at all?)

Or what if you want to call a nearby boat through your AI50, which accidentally is installed at your chart-table. It should then be possible to initiate a DSC call from the chart plotter, by using the AI50 and the RS82/87 radio - without leaving the helm! Are these functions just in my dreams, or should these be possible? (It IS possible to do this directly on the AI50!)

These devices are VERY expensive, so they should be fully functional - fully integrated? Why use halfway good solutions when you have a complete Simnet on board?
S/Y Nadun - Hanse 320#171

LG3600 - NOR13510


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