What's this raymarine thing do

[beamishken]

Found this lurking in the console of a boat I bought recently & am in the process of refurbishing
The boat is fitted with raymarine radar & plotter which seems a bit overkill for a rib
I'm trying to tidy up the console which has various brackets & multi plugs etc that if redundant I'd like to fill the holes I noticed 4 bolts straight through the center of the console so decided to investigate & found this
Which is wired to one of the multi plugs & a very corroded usb plug & the lead to the plotter
I'm just wondering if I can get rid of both & clean up the console and get rid of some of the spaghetti in there
Unfortunately I didn't get the manual for the radar/ plotter

[paulbrown22]

NMEA multiplexer, to combine multiple NMEA streams into single output, and/or switch between inputs. The USB lead will be the programming interface for the multiplexer.

Presumably there were inputs to it from more than just a single GPS/plotter (an AIS device, redundant GPS sensor or something?), and the combined/switched output was fed to a plotter or other onboard gadget. Or the original owner was "oversold"?!

If you're just running a single plotter/radar with single GPS input, I can't think there's any need for it.

[beamishken]

Hi Paul thanks for that plotter is a c 90 with a 18"digital radome seems to have been fitted 2011 so not an old instalation
I like to keep things simple & even thought of removing the radome & selling it as it will be useless in my ownership
The story is the boat was owned by a company who supplied some form of rangefinding/ communication system for military use & this boat was used as a demo platform so I'm guessing the wiring to the now redundant multi plug was either an output or input to interface with the other equipment
I guess I'll need to try & source a wiring diagram & effectively re install the plotter & radome wiring to tidy things up
I hate having unused items spoiling the look of things
Anyone have a wiring diagram for a c90 plotter & radar ?

[Simon666]

Do you know who fitted this?
Those cable glads are doing nothing. I would be very worried about moisture and condensation getting into the unit.

[Pikey Dave]

It's not Raymarine, it's an Actisense nmea0183 multiplexer. Very handy bit of kit, I have one on BP, it allows multiple nmea0183 devices to talk to each other. About £180 iirc.


.....sh1t happens.......

[beamishken]

Originally Posted by Pikey Dave

It's not Raymarine, it's an Actisense nmea0183 multiplexer. Very handy bit of kit, I have one on BP, it allows multiple nmea0183 devices to talk to each other. About £180 iirc.


.....sh1t happens.......

Hmm the only kit on the boat is the raymarine plotter & radar which I'd assume are integrated units & an icom radio that needs replacing which doesn't look like it's worked for a long while I'd assume the plotter has an output to feed position to the radio
I'm thinking I don't need it so I can remove it & everything will still work after rewiring & I can tidy the console & fill the holes for the bolts holding this unit in place ?

[Pikey Dave]

Originally Posted by beamishken

Hmm the only kit on the boat is the raymarine plotter & radar which I'd assume are integrated units & an icom radio that needs replacing which doesn't look like it's worked for a long while I'd assume the plotter has an output to feed position to the radio
I'm thinking I don't need it so I can remove it & everything will still work after rewiring & I can tidy the console & fill the holes for the bolts holding this unit in place ?

If that's all the electronickry you have, you don't need the multiplexer. The radar has nothing to do with it. The plotter & VHF can be linked directly. If you add AIS in the future it could come in handy.

[paulbrown22]

Originally Posted by beamishken

Hmm the only kit on the boat is the raymarine plotter & radar which I'd assume are integrated units & an icom radio that needs replacing which doesn't look like it's worked for a long while I'd assume the plotter has an output to feed position to the radio
I'm thinking I don't need it so I can remove it & everything will still work after rewiring & I can tidy the console & fill the holes for the bolts holding this unit in place ?

Yep, with that setup I can't see any need for a multiplexer - just another potential failure point! All the Raymarine stuff should just plug directly together (the cable from the radar dome presumably won't have gone through the multiplexer), and will provide at least 1 NMEA output that can go directly to the VHF.

[HDAV]

Originally Posted by Simon666

Do you know who fitted this?
Those cable glads are doing nothing. I would be very worried about moisture and condensation getting into the unit.

The glands are there for show only.....the glands are over sized for the cable and wont seal on multiple cables......

Also they seem to have used the same colour for pretty much everything! Fault finding would be fun!

[beamishken]

Ok cheers for the input now has anyone got an instalation instructions/wiring diagram for the plotter & radar so I can rip it out & start again

[beamishken]

Thanks to Alzi for sending me a link to the installation instructions
Cheers
Anyone want to make me an offer on a used multiplexer?

[SparkUK]

don't suppose you've still got your multiplexer? I need to one to get a few things working together.

[beamishken]

No sorry mate it went a while ago