Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 27-11-2015, 05:41   #1
Registered User
 
Gilletarom's Avatar

Join Date: Mar 2010
Location: France
Boat: 10.50 mètres
Posts: 2,294
NMEA AIS Sentences with Tag block. O 4.0 Do not show AIS targets.

Hello Dave,

Here is a subject that has, perhaps, been addressed at least partially.

A French sailor, currently at a port in the Indian Ocean, has problems with the display of AIS targets by OpenCPN.

For testing, installation comprises:
- A AIS transponder "Matsutec HA 102"
- A multiplexer "wireless / USB" Miniplex2
- An Ipad
- A PC with OpenCPN V4.0 (same problem with O 3.2.2)

The information from the transponder are sent to the multiplexer.
The multiplexer sends its data to the PC via a USB cable
The multiplexer sends its data to the iPad via wifi.

The attached two pdf files showing the sentences received by the IPad and those received by OpenCPN.

It is found that:
- All NMEA sentences received by the iPad has a "tag block".
- Only the NMEA sentences, type AIVDO / AIVDM received by OpenCPN has a "tag block".

The iPad displays AIS targets without problems. OpenCPN not show any.

The French sailor has also made a recording with VDR in OpenCPN. This is the "VDR1.tx" section attachment, download.zip.doc file.
At home, on my Lenovo, with this "VDR1.tx" file, I have no display AIS target.

I made a second file "VDR2.tx" in which I erased all the "block tag". See attached. with this "cleaned file" I have no problem displaying all AIS targets.

It appears that OpenCPN not cleaned all NMEA sentences.

The French sailor saw that it is possible to prevent the presence of "tag block" in the NMEA sentences, the output of the multiplexer, using preferences of this multiplexer.
This should solve the problem partially. This test will be done today.

That said, the real solution would be OpenCPN cleaned all NMEA sentences that have a "tag block" at first.

B.R. Gilletarom.
Attached Files
File Type: pdf NMEA_Ipad.pdf (138.0 KB, 30 views)
File Type: pdf NMEA_OpenCPN.pdf (188.7 KB, 32 views)
File Type: doc Downloads.zip.doc (87.8 KB, 23 views)
__________________

__________________
Gilletarom is offline   Reply With Quote
Old 28-11-2015, 05:41   #2
Registered User
 
Gilletarom's Avatar

Join Date: Mar 2010
Location: France
Boat: 10.50 mètres
Posts: 2,294
Re: NMEA AIS Sentences with Tag block. O 4.0 Do not show AIS targets.

Same problem with O 411108 (Lenovo U41, W 8.1)
__________________

__________________
Gilletarom is offline   Reply With Quote
Old 28-11-2015, 06:08   #3
Registered User
 
Gilletarom's Avatar

Join Date: Mar 2010
Location: France
Boat: 10.50 mètres
Posts: 2,294
Re: NMEA AIS Sentences with Tag block. O 4.0 Do not show AIS targets.

1° Same problem with Linux ubuntu and O411108

2° Test (Windows ?) by french sailor, by using prefences of the mutltiplexer :
If he prevent the tag, no problem with O 4.0, the ais targets are visible.
__________________
Gilletarom is offline   Reply With Quote
Old 28-11-2015, 06:49   #4
Marine Service Provider
 
bdbcat's Avatar

Join Date: Mar 2008
Posts: 4,883
Re: NMEA AIS Sentences with Tag block. O 4.0 Do not show AIS targets.

Gilletarom...

I see this as well. I will implement a solution in the next Beta.

Thanks for the traces
Dave
__________________
bdbcat is offline   Reply With Quote
Old 08-12-2015, 11:35   #5
Registered User
 
Gilletarom's Avatar

Join Date: Mar 2010
Location: France
Boat: 10.50 mètres
Posts: 2,294
Re: NMEA AIS Sentences with Tag block. O 4.0 Do not show AIS targets.

Dave,

Quote:
Originally Posted by bdbcat View Post
Gilletarom...
I see this as well. I will implement a solution in the next Beta.
...
Dave
I test with the compilation that Jean-Pierre send to me. All is Ok now. The AIS targets are visible
B.R. Gilletarom.
__________________
Gilletarom is offline   Reply With Quote
Reply

Tags
ais, enc, nmea

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cpn not showing ais targets when not connected to routerr delcrest OpenCPN 15 11-08-2015 19:23
AIS-SART NMEA Sentences continuouswave OpenCPN 4 05-01-2015 11:30
OpenCPN 3.3.xxxx and plugins : NMEA sentences list ? Gilletarom OpenCPN 17 01-05-2014 07:02
OpenCPN not sending NMEA autopilot sentences. Islander OpenCPN 6 16-04-2014 08:02
Which NMEA Sentences Does an Autopilot Use ? svpresent Marine Electronics 7 17-09-2010 03:21



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 21:49.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.