NMEA 0183 WizzKid Needed

[grumpygit]

Any experts out there that may be able to help me out. My yacht is fitted with ST 7000 Autohelm control unit at the wheel with a second ST 7000 control unit and a ST50 Multi-Function at the chart table. Also wind, depth, rudder angle and speed on the cockpit coaming all connected to SeaTalk.
I do not have DSC radio so I wish to fit a Nasa AIS engine 2 and a ASR 100 splitter (which have been sat new in a locker for longer than I care to remember) at the chart table and connect into my Standard Horizon 180i chartplotter at the wheel.
Could anyone please tell me if I can connect these into the NMEA 0183 SeaTalk system, as in the chartplotter into the ST7000 at the wheel and the AIS engine into the ST 7000/ST50 at the chart table. Any help would be much appreciated, cheers.

 

[nigelmercier]

Could anyone please tell me if I can connect these into the NMEA 0183 SeaTalk system...

NMEA and SeaTalk are totally different systems. I'm a bit confused about what you want to do. You can connect AIS directly into your CP180.

 

[temptress]

Short answer is yes but....

SO what autopilot do you have? You have 2 control units connected to a 'brain somewhere. start there - it probably has a copule of NEMA inputs and outputs - you should be able to use these to get your seatalk into NEMA and your NEMA stuff back into SEATALK.

First thing is to count devices and connections. What NEMA ports do you have available? - you should be able to wire this up relatively easily.

How is your Chart plotter connected just now? Is it receiving the outputs form the instruments?

 

[AngusMcDoon]

You can't connect your AIS engine to your ST7000 or ST50 because 1) they can't read AIS data and 2) they can't display AIS data anyway.

Connect your AIS engine to your chartplotter. Job done.

 

[pvb]

Could anyone please tell me if I can connect these into the NMEA 0183 SeaTalk system,

No, you can't. You'll have to connect the AIS engine direct to your chartplotter. The ASR100 is merely an aerial splitter, and doesn't use NMEA.

 

[grumpygit]

Short answer is yes but....

SO what autopilot do you have? You have 2 control units connected to a 'brain somewhere. start there - it probably has a copule of NEMA inputs and outputs - you should be able to use these to get your seatalk into NEMA and your NEMA stuff back into SEATALK.

First thing is to count devices and connections. What NEMA ports do you have available? - you should be able to wire this up relatively easily.

How is your Chart plotter connected just now? Is it receiving the outputs form the instruments?

Thank you all for your informative answers and some questions there also. The main reason for my question is that it will be a right pain (putting in mildly) to get from the wheel to the chart table with the cable.
In the Autohelm ST7000 hand book it states there is an NMEA input on the control unit and the ST50 states there is an NMEA output, I was just hoping there was a way to connect up with little effort. The plotter is connected to NMEA to drive the autohelm which is done at the course computer, this is mounted inside the boat but close to the binnacle, and apart from the power supply no other connections are made.
I do realise also that the ASR is just a splitter, I put that in to give the whole picture. My caution is that I have no experience of NMEA systems at all. Thanks again all for you input.

 

[pvb]

Thank you all for your informative answers and some questions there also. The main reason for my question is that it will be a right pain (putting in mildly) to get from the wheel to the chart table with the cable.
In the Autohelm ST7000 hand book it states there is an NMEA input on the control unit and the ST50 states there is an NMEA output, I was just hoping there was a way to connect up with little effort. The plotter is connected to NMEA to drive the autohelm which is done at the course computer, this is mounted inside the boat but close to the binnacle, and apart from the power supply no other connections are made.
I do realise also that the ASR is just a splitter, I put that in to give the whole picture. My caution is that I have no experience of NMEA systems at all. Thanks again all for you input.

The problem is that AIS data on NMEA has to be transmitted at a different speed from ordinary NMEA data. That's why it's cheaper and easier just to wire your AIS engine direct to your plotter.