Radar Overlay Alignment

[crayiii]

I've just installed the latest version of OpenCPN and the Radar plugin. This is a new install and is getting data from a full B&G system with a 4G radar with everything connected with wired ethernet.

The radar overlay in OpenCPN is skewed by about 10 degrees. I'm thinking that OpenCPN is is adding the WMM variation to the variation that the radar is including within its data strings. Again, I'm guessing at this but I don't know how to test it.

I've tried disabling the WMM plugin but it doesn't change anything. If I adjust the bearing in the radar plugin, I can get it to lineup with features on the chart but then it's off on the B&G Zeus MFD.

Does anyone know where I should look to fix this?

[Hakan]

crayii..
Please describe how you get a compass heading into OpenCPN.


Since you've probably have a heading connected to the MFD it may come from a N2k - NMEA2000 - connection to the 4G antenna? If so you may try to in radar plugin preferences either use "Ignore radar heading" or "Pass radar heading to OpenCPN". In the latter case you may disconnect any OpenCPN compass connection.

[crayiii]

Originally Posted by Hakan

crayii..
Please describe how you get a compass heading into OpenCPN.


Since you've probably have a heading connected to the MFD it may come from a N2k - NMEA2000 - connection to the 4G antenna? If so you may try to in radar plugin preferences either use "Ignore radar heading" or "Pass radar heading to OpenCPN". In the latter case you may disconnect any OpenCPN compass connection.

None of those settings make any difference. It seems like the chart is aligned to true but the radar is magnetic or vice versa.

[crayiii]

Found the issue. I have something like 6 different sources of heading data in the network. Z100, Precision 9, Vesper Cortex, autopilot, and radar.

[SirChaunchy]

I am running Open CPN 5.6.2 on both my Mac computer and on a Raspberry Pi4. I have a NAVICO/SIMRAD 4G radar which allows me to show Radar 4GA and 4GB simultaneously. Some time ago I posted that when I tried to run both radar displays, my Open CPN program would freeze up. I can run either 4GA or 4GB with no problems, but when I try to display them both, it freezes up. In the previous posts (which I can no longer find) someone pointed me to the beta version of the radar plugin which I downloaded at the time and it seemed to fix my problem. Since then radar plugin 5.3.3 came out and was advertised to have included those fixes, but I installed it, and now I have the same problem with my program freezing up when I display both radars. When I go to the Beta catalogue I just see radar 5.3.3 and when I go to the normal master catalogue I see radar 5.3.3. How do I fix this problem?

[Douwe Fokkema]

Originally Posted by crayiii

Found the issue. I have something like 6 different sources of heading data in the network. Z100, Precision 9, Vesper Cortex, autopilot, and radar.

Bearing can be aligned with menu Advanced->Installation->Bearing Alignment.

But you should take care that there is a consistent heading source.

Douwe

[Franziska]

Originally Posted by Douwe Fokkema

Bearing can be aligned with menu Advanced->Installation->Bearing Alignment.

But you should take care that there is a consistent heading source.

Douwe

Douwe, I have a similar issue and corrected it this way. Thanks.
I noticed one issue though.
I have a Quark-Elec heading sensor which is connected via USB.
When I start up the PC the heading sensor starts working.
When I start up OpenCPN it does not show the heading info despite the fact that the correct com port is configured and activated in the connection window of OpenCPN.

When I change nothing in this window and only click apply the heading info shows in the dashboard and works for the radar.

This happens every time I start OpenCPN, I always need to go into connections and hit apply for the heading to show up and have it work with our radar.
Radar is the B&G 4G directly connected to a PC with a crossover cable.

Interesting enough the radar Plug-in connection window shows a heading info before apply is hit.

[ChristianV]

Similar issue here. I will give it a try when i back to my boat next time. It looks like a sofware issue from OpenCPN?

Originally Posted by Franziska

Douwe, I have a similar issue and corrected it this way. Thanks.
I noticed one issue though.
I have a Quark-Elec heading sensor which is connected via USB.
When I start up the PC the heading sensor starts working.
When I start up OpenCPN it does not show the heading info despite the fact that the correct com port is configured and activated in the connection window of OpenCPN.

When I change nothing in this window and only click apply the heading info shows in the dashboard and works for the radar.

This happens every time I start OpenCPN, I always need to go into connections and hit apply for the heading to show up and have it work with our radar.
Radar is the B&G 4G directly connected to a PC with a crossover cable.

Interesting enough the radar Plug-in connection window shows a heading info before apply is hit.
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