Hi Dennis,

 

Thanks for the reply.  I know that there is one on the helm display, and my 
understanding is that there is one built into the masthead wind transducer on 
the other end.  I also am measuring 60 ohms on the bus itself (blue and white 
wires).  According the website linked below, this would indicate the presence 
of endcaps or terminators on both ends.  If I disconnect the wind transducer or 
take the endcap off the helm display, I get 120 ohms just like I am supposed to.

 

https://www.maretron.com/support/knowledgebase/phpkbv7/article.php?id=443

 

This system is over 3 years old and has worked well.  It was not working on the 
final trip to winter storage last year, so something must have happened even 
before last winter.

 

Thanks again,

 

Jim

 

 

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dennis C. 
via CnC-List
Sent: Saturday, May 27, 2017 5:51 PM
To: CnClist <cnc-list@cnc-list.com>
Cc: Dennis C. <capt...@gmail.com>
Subject: Re: Stus-List NMEA 2000 network down

 

Don't really know much about N2K but do you have end caps on the ends of the 
bus?

 

Dennis C.

 

On Sat, May 27, 2017 at 4:01 PM, Jim Reinardy via CnC-List 
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > wrote:

Having big instrument issues to start the season and going crazy trying to 
figure it out. This is all B&G equipment including a Zeus Touch 7 and three 
Triton displays.  All displays power up fine but I am getting no data from 
wind, depth, speed or compass transducers.  The diagnostic on the displays say 
that the NMEA 2000 bus is off, but I don't know why.

 

The red and black wires show 12v at all points I can measure.  The resistance 
of white and blue is 60 ohms with both ends terminated, 120 ohms with either 
terminator off, and about 20k ohms with both terminators off.  This seems 
normal based on articles I found online. I have also tried taking each piece of 
equipment out of the loop as best I can.  Nothing I do seems to give me a 
network.  Any ideas what I am missing?

 

Thanks,

 

Jim Reinardy

C&C 30-2 "Firewater"

Milwaukee, WI

 

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