seatalk junction box nessesary ?

[gniersma]

I ve to connect several seatalk instruments together.
I understoód that seatalk is a bus system. Unfortunatly my radar, vhf, remote control have only one seatalk connector. the ST60 intruments have two. So how can i connect everything together?
I understood that raymarine sells junctionboxes. are these boxes active devices or is it possible to connect the wires in parallel ?

 

[gfbalduc]

I had the same problem, and after having asked Raymarine (who advocated the use of the junction box), I just connected the wires together and all works well (same-colored wires go together).
The junction box is passive, no fancy electronics inside!

 

[sailorman]

all my seatalk nema / furuno nema are jointed via a simple "block connector"
no probs @ all.
the 3 seatalk cables should be similar to connect

 

[johna]

[ QUOTE ]
(same-colored wires go together).

[/ QUOTE ]


If you are adding to an existing arrangement I suggest you check for continuity of each conductor rather than just rely on colour I found some wrong polarities in my system.

 

[Gin]

The ST60 wind/tri-data instruments take their 12 volt power from the Seatalk bus. So whichever other instrument powers them(Raymarine suggest tiller pilot/Autohelm which is fused to 12 amp ) just make sure there is a 5amp fuse in the line to protect them in the event of an overload

 

[isandell]

"The ST60 wind/tri-data instruments take their 12 volt power from the Seatalk bus. So whichever other instrument powers them(Raymarine suggest tiller pilot/Autohelm which is fused to 12 amp ) just make sure there is a 5amp fuse in the line to protect them in the event of an overload "

Seatalk has three wires, data, power and common. Is there any reason why you can't supply separate power to instruments and just connect up the databus and common?

Ian

 

[philip_stevens]

As Sailorman says, just use a connector strip or block.

Then again, if you want better connections, use one of these, GP-JB or GP-JB1 or GP-ACTS from tlc-direct.co.uk

Click here http://snipurl.com/m8bi to view the connectors.

 

[John_Clarke]

I tried this and it caused Seatalk to fail. The C120 gave a message "No Fix" and the ST4000 would not operate.

 

[jwrhind]

" Seatalk has three wires, data, power and common. Is there any reason why you can't supply separate power to instruments and just
connect up the databus and common? "

This worked for me, and allows different instruments to be fed via separate circuit breakers.

See http://tinyurl.com/8ox8v "Can I cut the red wire to the SeaTalk instruments?" and the answer suggests not.

But http://tinyurl.com/adyvg seems to differ.!