Hardware connection Navico to OpenCPN NMEA 2000/0183

[Franziska]

Originally Posted by Hakan

The first is to have a network connection to the PC.

Check the IP-cable and the power.
In the radar manual there's a pin out table. Check so all wires are correct connected from the round scanner connector to the pins on the RJ45. Either measure with a multimeter or if visible the wire's color. If RX/TX are reversed you can try a reverse connected cable or put a switch in between at least for a test. (The switch will detect a reversed connection and adapt)

Thanks Hakan will measures this later.
Lof file is ready to be sent to Douwe.

[Franziska]

Originally Posted by merrimac

You can check that the radar is in standby by measuring the power consumption which should be something like 0,2 A. It is silent until the antenna starts rotating.



Put a switch in if your computer doesn’t see the radar as a valid endpoint as you are describing. $20 5 port switch is enough.

We just measured the power connection and it says 0.2A power consumption when power is supplied to the radar.

No rotation happens though, but I do suspect we need a valid Ethernet connection for the latter to happen.

So, the unit itself seems to get power.

We also measured all pins in the Ethernet cable as per the B&G cable.
Round cable connector end to RJ45 at the other end.
All pins are connected as described in their manual (see photo).

Radarcable therefore seems to be OK too.

We will now order a network switch to put in between, hopefully that helps.
Attachment 257241Attachment 257242

[Hakan]

Franziska..
You must have a network connection detected by the PC. See lower right corner. The radar network is reported as "Unidentifyed network" No Internet. See my shot.
Again.. The easiest way to detect if the RX/TX are shifted is to connect the radar RJ45 to a switch. Then one cable from the switch to the PC.
Or: if you've a switched IP-cable to connect between the radar-RJ45 and the PC

[Hakan]

re: "We just measured the power connection and it says 0.2A power consumption when power is supplied to the radar."
That's good. 0.2 A is about the current it use to take while standby and , yes, awaiting the "Transmit" command from the radar plugin.

[Franziska]

Originally Posted by Hakan

Franziska..
You must have a network connection detected by the PC. See lower right corner. The radar network is reported as "Unidentifyed network" No Internet. See my shot.
Again.. The easiest way to detect if the RX/TX are shifted is to connect the radar RJ45 to a switch. Then one cable from the switch to the PC.
Or: if you've a switched IP-cable to connect between the radar-RJ45 and the PC

Thanks, so we'll get a switch. Have to look in the radar.pi manual for what to get.
Or, I know I am pushing my luck, but do you know of one which is cost effective and can be ordered from Amazon (Link?).
Sorry, but I am not very versed on this electronic stuff, so a little afraid to order something not suitable or unnecessary expensive.

[Hakan]

The cheapest is to go to a PC shop and ask for a short cable and connector that switches the RX/TX. (Or make one yourself?)



A switch can be like this link https://router-kaufen.eu/wp-content/...omprimiert.jpg.
Make sure you get the 12 V, to fit the boat's power, and not a 5 V.

[Franziska]

Originally Posted by Hakan

The cheapest is to go to a PC shop and ask for a short cable and connector that switches the RX/TX. (Or make one yourself?)



A switch can be like this link https://router-kaufen.eu/wp-content/...omprimiert.jpg.
Make sure you get the 12 V, to fit the boat's power, and not a 5 V.

The cable you mentioned is called a crossover cable, correct?

"... What Is Crossover Cable?
A crossover Ethernet cable*is a type of*Ethernet*cable used to connect computing devices together directly. Unlike straight through cable, the RJ45 crossover cable uses two different wiring standards: one end uses*the T568A wiring standard, and the other end uses the T568B wiring standard. The internal wiring of Ethernet crossover cables reverses the transmit and receive signals. It is most often used to connect two devices of the same type: e.g. two computers (via*network interface controller) or two switches to each other... "

[Hakan]

"Crossover" is a good word, yes.

[Douwe Fokkema]

Originally Posted by Franziska

Attached here after all.

Forum does not allow zip. Therefore rename the attached doc to zip, unzip and rename the resulting txt to log.

My boyfriend (the Sparky onboard) is just checking the cable between radar and PC.
It's brand new, so it should be OK.

[emoji846]Attachment 257238

Franziska,
I looked at your log file. It shows a situation where radar_pi has no radar connected.
So, check the ethernet, try a switch/router in between. Can you ping the radar?
Check the power to the radar, current 0.2 A in standby?
Or your radar is broken, I have seen this before. Is the radar as brand new as the cable? Try a new radar, Halo+ is a good choice.
More I cannot do for you.
Douwe

[vincik]

Try it leaving the yellow cable unconnected!

[merrimac]

Is the radar new? If not did you test it before buying?

Did you test it with a Navico MFD?

[merrimac]

Originally Posted by vincik

Try it leaving the yellow cable unconnected!

Why, what would this do? This is needed to put it in standby as opposed to off. Given that it is using 0.2A it is in standby.

[merrimac]

Switch advice: I use a Netgear GS108. Don’t worry if the input is 9V, it doesn’t seem to blow up with 13V.

[vincik]

I had some problems connecting my Lowrance/Simrad BG24 to OpenCPN Windows version; maybe it was luck, but it worked when I disconnected the yellow cable.

[Franziska]

Originally Posted by Hakan

The cheapest is to go to a PC shop and ask for a short cable and connector that switches the RX/TX. (Or make one yourself?)



A switch can be like this link https://router-kaufen.eu/wp-content/...omprimiert.jpg.
Make sure you get the 12 V, to fit the boat's power, and not a 5 V.

Hakan, we got a RJ45 crimper and can create the crossover cable now. Do you know which wires we need to swap?
Based on the cables wire diagrams I posted above.