NMEA 2000 and simrad GO7 questions (not good with electronics!!)

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01-03-2017 | 12:40 PM

#21

AllDodge

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Joined: Nov 2009

Posts: 4,198

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From: KY

Most boats are made from plywood, then fiber glass, then gelcoat. A sounder cannot transmit thru air, so if there is a void (air between layers) the sounder will not work. The sounder will transmit thru a solid hull. and while I'm not positive how an active thunder is made, I'm pretty sure you should not have an issue

01-03-2017 | 12:59 PM

#22

Dave M

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Joined: Oct 2000

Posts: 5,664

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From: Hollywood, MD, USA

Quote:

Originally Posted by AllDodge

From what I'm finding the nema drop and back bone cables are the same. Issues with nema is distance and voltage drop. A .5 M cable isn't much but the connector would be the only item I would thing of. When you remove the cable does the fault go away?

Edit: should mention no cable length shall exceed 20 feet (6 M)

Yes, the error goes away. Maybe I just need to double check all the connections. Everything is in pretty close proximity so I don't think it's a distance thing. The "T" that came with the Merc gateway is different than the others, not sure if that matters. It shouldn't as long as everything is up to the NMEA 2k spec. Also I didn't know if I should use the extension to extend the trunk, or the drop. I guess I can experiment either way. I also read somewhere that the gateway can pick up interference from other devices.