Adding a compass to my Raymarine Axiom/stng/st1 setup

[Mr Googler]

Here you go……

https://www.defender.com/pdf/SEA_TALK_NG_REF_MANUAL.pdf

 

[Daverw]

the tees are just connectors that do nothing other than allow easy fitting, raymarine use their own cable and plug that also includesvand additional wire to use seatalk stuff. Any other make mostly use the standard plug that has a small chrome threaded bezel.
so you answer is use an adapter cable to fit none raymarine or use the black,
/ white spur cable to fit raymarine. This will also generally supply power as well to most items

 

[DavidJ]

Thanks guys
Digestion time

 

[Mr Googler]

you can’t touch the blue ones on your bar. They are the resistance terminators.

I assume the middle plug on the bar is yellow (a st1 to stng converter?)

I think I sussed it though.

the axiom lead at the plotter is n2k….there is then a lead which converts the n2k plug to stng plug.

easiest option is to by a n2k T piece

Garmin NMEA2000 Tee Connector - 010-11078-00

Plug that in between the plotter n2k lead/plug the the converting lead . The heading sensor will plug straight into that new n2k T piece. I checked on line about terminator positioning but electrically speaking…..I don’t think it’s any different than if you had a spare port on the bar

in the future….you could add more n2k stuff by adding more n2k t pieces next to each other

 

[Daverw]

Looking again at your sketch, you need to fit the tee on your backbone not the spur that goes to you plotter, you don’t appear to have a backbone cable just the mutli block, your will need to remove one of the blue end plugs, get a short black/ blue backbone cable, this goes into the tee on the blue side and the end stop goes into the other side blue of the tee, you then connect your new device onto the tee at the white socket.

it’s easy when you’ve got your head around it and then really easy to add stuff later.

 

[Mr Googler]

Looking again at your sketch, you need to fit the tee on your backbone not the spur that goes to you plotter, you don’t appear to have a backbone cable just the mutli block, your will need to remove one of the blue end plugs, get a short black/ blue backbone cable, this goes into the tee on the blue side and the end stop goes into the other side blue of the tee, you then connect your new device onto the tee at the white socket.

it’s easy when you’ve got your head around it and then really easy to add stuff later.

if you want to use raymarine kit and cables then yes.

if the device being added is n2k…..why involve the block at all?

 

[Daverw]

if you want to use raymarine kit and cables then yes.

if the device being added is n2k…..why involve the block at all?

If the OP wants to retain the ST60 stuff he needs to keep this in the system, thus is needed for STng to Seatalk bus conversion. This is how I started and eventually removed this as all was moved to N2k instruments. Now have both device net and STng on backbone with spare connections for both.

 

[DavidJ]

I do appreciate the effort you are going to guys to help me.
Because I only really want to play with MARPA and overlays I’m trying to keep down cost so it might help if we ignore the Raymarine AR200 which is of course the most straightforward and go with the Garmin solution.
By doing this I introduce all sorts of physical connection problems and I need to understand more the difference between the characteristics of spurs and backbones.
Every day a school day

 

[DavidJ]

Is it as simple as splicing the blue/black backbone cable to the garmin cable assuming I can match the presumably different colored wires, then plugging it into the blue socket of my starter kit

 

[Mr Googler]

If the OP wants to retain the ST60 stuff he needs to keep this in the system, thus is needed for STng to Seatalk bus conversion. This is how I started and eventually removed this as all was moved to N2k instruments. Now have both device net and STng on backbone with spare connections for both.

You missed my point…..STNG is n2k with different plugs

The axiom plotter power/network combo cable lead has a n2k Connector on it!

the block needs to stay as it’s converting st1 to stng/n2k but there’s no need to plug the next “thing” into it

@DavidJ needs a n2k t piece and the garmin or similar n2k heading sensor…that’s it.

 

[Mr Googler]

You don’t even need to buy the n2k T…..it’s in the steady cast kit!

SteadyCast™ Heading Sensor | Garmin Support

 

[DavidJ]

So will my AO6045 lead fit into the Garmin tee?

 

[Daverw]

Ow I’m a bit confused, does the aximon have 2 STng ports? One is already connected to the adapter. Does he not have to connect to the backbone? Which is currently in the form of the adapter only? The Garmin steadycast has a built in drop cable but still has to go to a backbone connection?
im fully aware of the connection types as I have both in my system

 

[Mr Googler]

So will my AO6045 lead fit into the Garmin tee?

Yes

 

[Daverw]

So will my AO6045 lead fit into the Garmin tee?

Yes as it’s the adapter cable, but the Garmin tee will not fit your backbone

 

[Mr Googler]

Ow I’m a bit confused, does the aximon have 2 STng ports? One is already connected to the adapter. Does he not have to connect to the backbone? Which is currently in the form of the adapter only? The Garmin steadycast has a built in drop cable but still has to go to a backbone connection?
im fully aware of the connection types as I have both in my system

No it has one….but it’s n2k…..then you use a lead to convert it to the stng connectors with lead a06045.

im saying go in before that lead as per my diagram

 

[Mr Googler]

Axiom ——-N2k T piece——A06045——stng bar

 

[Daverw]

I have never put a tee in a spur drop to feed two instruments, if it works as you say fine but all the stuff I’ve done and read details to use the backbone

 

[Mr Googler]

I have never put a tee in a spur drop to feed two instruments, if it works as you say fine but all the stuff I’ve done and read details to use the backbone

i get that and is the bit I’m not 100% on and why I mentioned the location of the resistor terminals.

not sure what you mean by 2 instruments

I can’t see why it wouldn’t work…..all the manual says is must have 2 terminators on the network as far apart as possible. I would buy the steady cast and try as I said. If it doesn’t work then a blue stng lead….stng t piece and stng / n2k converter plug will be needed as you suggest.

The only difference in your suggestion is terminator location really

 

[DavidJ]

“Not sure what you mean by 2 instruments”

I think @Daverw means the Axiom and the SteadyCast both on the same spur.