How Can I Test the System on New-to-Me Boat?

adt2

New member
We recently purchased our boat and the installed Furuno gear is non-functional. We have an external array about 4' long, a small display that powers up and seems to work but doesn't do much, a large display that's completely dead with a delaminated screen, and a network sounder. The large-diameter cable from the array has been cut and coiled under the flybridge helm, so I cannot connect it to anything. I believe the network sounder is connected to the small display but I'm not 100% certain.

I would like to test the equipment to determine what works, but I'm unsure of what the "minimum" requirements are. Seems like I need to replace the thick cable from the array, but I'm not sure what it should connect to, or whether I would need additional equipment in order to verify whether my partial system works at all.

I believe the local Furuno dealer has a cable I can borrow for testing purposes, and they also have quite a selection of older gear if I need something else for testing purposes - but they're a fairly expensive option for this kind of investigative troubleshooting, so I'd rather do that on my own if possible.
 

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The radar likely connected to the 10.4" unit and can not run on the 7" even if cable is changed. The electronics used by a 7" display is totally different. A 10" radar will not directly connect to 7" display or vice versa. If testing the radar you would need a NN1 (RDP139) or VX2 (RDP149) 10 inch unit to run it.
 
They both worked at one point; sounds like the array connected to the 10.4" unit and perhaps the 7" unit was piggybacked off of that? Maybe via the network sounder?

I've since found a Furuno NavNet black box unit RPU-015 with a mating control panel that I think might work. If I understand correctly, I can connect the array (via a new cable) to the RPU, and then use that to drive a separate display. Might not be a great long-term solution but would allow me to test the remaining equipment, wouldn't it?
 
Yes, the 7" would network and see the radar through the 10". Yes the BlackBox Vx2 (RPU-015) is the same as a 10" in regards to the radar. It would be setup and then it would serve the 7" radar over the network.
 
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