Baud rates!!!!!

[ghostlymoron]

Try & get the model numbers of the equipment. Then we can try to work out a solution.

thanks woosle i was beginning to feel a bit 'got at'. My own fault tho for not having full info of pals equipment. Seeing him today so will obtain further details. But not on boat so may not get all. My pal has an aversion to reading installation manuals

 

[prv]

My pal has an aversion to reading installation manuals

No wonder he's struggling, then. How silly.

Pete

 

[temptress]

.... My pal has an aversion to reading installation manuals

then I suggest he pays someone to do this for him. Regardless - we need to know (from the equipment instruction manuals) what connections are supported and also the make and models are of the equipment involved. If the AIS is a class B transponder it will have it's own GPS. Most Class b transponders will NOT output a GPS posistion but some will..... Also are there any USB ports on any of the equipment?

 

[ghostlymoron]

My pal feels he doesn't need instruction on electronic matters (I've remonstrated with him about this but with little effect). It's a sub-set of the 'real men don't need directions' syndrome.

 

[prv]

My pal is an ex-BT comms engineer and feels he doesn't need instruction on electronic matters (I've remonstrated with him about this but with little effect). It's a sub-set of the 'real men don't need directions' syndrome. Hope he's not reading this or I won't be invited for sailing again.

In that case I can understand not wanting to read the entire book cover to cover, but I would expect him to flick through to the table or diagram listing which conductor does what in the wiring loom. No matter how much of an electronics guru you are, you have to look up that kind of stuff on a new piece of kit.

Pete

 

[laika]

I'll take a wild guess that the plotter is the old C series which only has one NMEA input/output. If the AIS is a raymarine too you might be in luck. My AIS 500 has a 4800 baud connection specifically for connecting to a VHF. Having the benefit of the later c series wide and plenty of NMEA 0183 connections I don't use it like this but the manual reads like the AIS 500 should be able to act as a multiplexer and pass data between VHF and plotter (sans high speed AIS info presumably). IIRC the newer 650 is similar, but check the manual (I'm bandwidth limited here). We await the kit list

 

[ghostlymoron]

I now think that I have misunderstood the problem slightly.
The plotter is an E series classic. The AIS does have built in GPS. But the plotter can only be set to high baud or low baud. It is currently set to high so that it can accept information from the AIS box and is therefore unable to transmit low rate baud to the iCom radio for position information. So I think that the solution is to have a seperate GPS dongle? to provide the necessary data to the radio unless the AIS unit can provide this. Sorry for misleading you all.

 

[laika]

What AIS unit is it? As I mentioned, I believe if it's a raymarine you can connect the VHF to the AIS via the low speed (4800 baud) interface on the AIS (and connect the AIS to the plotter via the 38.4k baud interface). If the AIS is something else without a low speed interface then yes, your options are looking like the separate cheap GPS or the probably-unnecessarily-complex-and-expensive multiplexer solution.