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hardee
Joined: 30 Oct 2006 Posts: 12633 City/Region: Sequim
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 22 Cruiser
Vessel Name: Sleepy-C
Photos: SleepyC
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Posted: Wed Jun 09, 2021 10:52 pm Post subject: |
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Pat, does N2K come after Y2K
A saw the remark about moving into the next century.
Good for you.
Harvey
SleepyC
_________________ Though in our sleep we are not conscious of our activity or surroundings, we should not, in our wakefulness, be unconscious of our sleep. |
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ssobol
Joined: 27 Oct 2012 Posts: 3446 City/Region: SW Michigan
State or Province: MI
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: SoBELLE
Photos: SoBelle
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Pat Anderson
Joined: 02 Nov 2003 Posts: 8556 City/Region: Birch Bay, WA
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Daydream
Photos: Daydream and Crabby Lou
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Posted: Thu Jun 10, 2021 3:33 pm Post subject: |
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This four port connector from Ancor is the same brand as my backbone, is $11 dollars less expensive, and will be here a day or two after I order it.
[img] _________________
DAYDREAM - CD25 Cruiser
CRABBY LOU - CD16 Angler (sold 2020)
Pat & Patty Anderson, C-Brat #62!
http://daydreamsloop.blogspot.com
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TyBoo
Joined: 23 Oct 2003 Posts: 5316 City/Region: Warrenton
State or Province: OR
C-Dory Year: 1996
C-Dory Model: 25 Cruise Ship
Vessel Name: TyBoo
Photos: TyBoo
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Posted: Thu Jun 10, 2021 6:24 pm Post subject: |
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I think you need to put a terminator on any unused port so unless you are hooking up four devices the singles might be cheaper in the long run. _________________ TyBoo Mike
Sold: 1996 25' Cruise Ship
Sold: 1987 22' Cruiser |
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Pat Anderson
Joined: 02 Nov 2003 Posts: 8556 City/Region: Birch Bay, WA
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Daydream
Photos: Daydream and Crabby Lou
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Posted: Thu Jun 10, 2021 7:25 pm Post subject: |
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TyBoo wrote: | I think you need to put a terminator on any unused port so unless you are hooking up four devices the singles might be cheaper in the long run. |
I have not seen any requirement that unused connections on a tee require a terminating resistor. Not going to be a problem at the start, since I have two ports and one will be for the GPS receiver / antenna and the other for the Suzuki SMG4 display. I anticipate at least two more in the not too distant future, namely, a new VHF with AIS, and a multiplexer for the rest of the old NMEA 0183 stuff, including the C-80 and the autopilot. So if anyone knows the definitive answer to Tyboo's statement, we would all love to hear it.
This is a copy and paste from the Actisense document on N2K networks:
Minimum Network Requirements
The following are the essential components of any NMEA 2000 network:
• Power insertion point - fused.
• 2 x NMEA 2000 certified devices (at least 1x TX and 1x RX) and a means to connect them to the network. This can be via T-pieces or other products which will be discussed later.
• Termination resistors - Precisely 2, no more, no less.
And:
Termination Resistors
At each end of the backbone a termination resistor must be installed.Each termination resistor is 120 Ohms and is connected in parallelacross the data pair of wires when plugged in to NMEA 2000 approved cables and connectors. This provides a total of 60 Ohms resitanceacross the network and is essential to data integrity. |
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Hunkydory
Joined: 28 Mar 2005 Posts: 2701 City/Region: Cokeville, Wyoming
State or Province: WY
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: Hunkydory
Photos: Hunkydory-Jay-and-Jolee
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Posted: Thu Jun 10, 2021 8:13 pm Post subject: |
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Pat, this is a photo of part of the combination Raymarine Seatalk & regular NMEA 2000 network, I made up last winter for our new Raymarine chart plotter, auto Pilot, Honda HD-4 motor gauges & NMEA 2000 motor information. Along with backbone needing plugged any unused data spur must also be plugged. I didn’t have any left over ports, so didn’t have to plug any off.
The backbone is all Raymarine Seatalk. The spur lines coming in & out are a combination of Seatalk & NMEA 2000. The NMEA 2000 Spurs needed adapter cables to connect to & from the Seatalk backbone.
_________________ Jay and Jolee 2000 22 CD cruiser Hunkydory
I will not waste my days in trying to prolong them------Jack London
https://share.delorme.com/JuliusByers
Last edited by Hunkydory on Thu Jun 10, 2021 8:22 pm; edited 2 times in total |
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jkidd
Joined: 23 Oct 2006 Posts: 1640 City/Region: Northern, Utah
State or Province: UT
C-Dory Year: 2007
C-Dory Model: 22 Cruiser
Vessel Name: Voyager
Photos: Voyager (JK)
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Hunkydory
Joined: 28 Mar 2005 Posts: 2701 City/Region: Cokeville, Wyoming
State or Province: WY
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: Hunkydory
Photos: Hunkydory-Jay-and-Jolee
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Posted: Thu Jun 10, 2021 8:26 pm Post subject: |
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Jody of course is right about the caps. When building the network, I thought there would be extra connecting points left over & the plugs I purchased looked similar to the backbone plug. |
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Pat Anderson
Joined: 02 Nov 2003 Posts: 8556 City/Region: Birch Bay, WA
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Daydream
Photos: Daydream and Crabby Lou
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Posted: Fri Jun 11, 2021 10:01 am Post subject: |
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Thanks, Jay and Jody. I don't have anything on the SeaTalk ports of the C-80, everything, and I do mean everything, is on the C-80 NMEA 0183 port. That will change incrementally! I will get some blank caps when I get the second tee connector. I am also going to need some conecting cables that are shorter than the two six foot cables that came with the start kit! Jay, I see where you mounted your backbone, that seems like a good spot, but do the screws poke up through the dash? I don't know how thick the fiberglass is there. |
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Hunkydory
Joined: 28 Mar 2005 Posts: 2701 City/Region: Cokeville, Wyoming
State or Province: WY
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: Hunkydory
Photos: Hunkydory-Jay-and-Jolee
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Posted: Fri Jun 11, 2021 12:55 pm Post subject: |
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Pat, that area is somewhere between 9/16 & 3/4 inch thick. I didn’t go through with the screws, I used, which at present I can’t remember the depth in. I cover the electrical area with a thick vinyl cloth attached by snaps, that are also screwed in & believe have 1/2 inch screws.
The auto pilot alone used 5 ports from the backbone, then another 4 for the engines to the Honda gauges & one for power. Many networks would also include more for the radio, radar & sonar.
My present radio is having transmit problems, so plan to replace it with one with AIS, so will be adding another single port for it. |
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Pat Anderson
Joined: 02 Nov 2003 Posts: 8556 City/Region: Birch Bay, WA
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Daydream
Photos: Daydream and Crabby Lou
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Posted: Sun Jun 27, 2021 7:30 pm Post subject: |
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OK, I spent a little time (actually a lot of time) today playing with LibreOffice Draw to make the base diagram of the components that need to be connected and configured. This is kind of patterned after the diagram Rogers Electronics in Portland did for Harvey's system, which has a bit more stuff than I do.
I did not show anything that gets connected to the N2K backbone which for now are the Suzuki MFD and N2K GPS. I see there is an extra box on top of the Digital Sounder Module that needs to be deleted! What remains is to add the colored lines corresponding to the wires in each cable showing all the connections, then to figure out routing and configuration for the Miniplex 3 USB-N2K multiplexer, and finally the settings for the Raymarine C-80 so it can accept and display the 38,400 baud AIS output along with the 4,000 baud output of everything else. I am hoping with the collective wisdom here, we'll get 'er done!
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