Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-02-2015, 17:24   #61
Sponsoring Vendor

Community Sponsor

Join Date: Dec 2010
Location: Auckland, New Zealand
Boat: Nordic 40
Posts: 199
Re: Vesper Marine AIS

Quote:
Originally Posted by svHyLyte View Post

Have you seen/heard of this situation before and, if so, are you aware of a fix?
No, we haven't heard of this before. Steve (Ocean Angel) has already been in contact with our tech support and we are working with him directly to identify the cause.
__________________
Jeff Robbins, Nordic 40 "Vesper", New Zealand
www.vespermarine.com
jeffrobbins is offline   Reply With Quote
Old 02-02-2015, 18:45   #62
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2014
Location: Anacortes
Boat: previous - Whitby 42 new - Goldenwave 44
Posts: 1,604
Re: Vesper Marine AIS

Quote:
Originally Posted by colemj View Post
Sure you can. You can have many, many of them. We have several GPS's connected to our NMEA network with no problem at all.

The instrument used to display the data selects the individual GPS data source to use. The other ones are then ignored, but they continue to put their data on the network.

If this wasn't true, then your advice to get a second GPS couldn't be followed because one cannot remove or turn off the GPS on the AIS.

The same is true for any other sensors, receivers, etc.

Mark
I don't think every device is smart enough to recognize which GPS data to use from which GPS. I can program my Furuno NavNet to accept one over the other but I have to select it so it will ignore the other, but I think that is only for NMEA 2000 devices. For example, engine monitoring devices for dual engines, have different device ID's so you can separate the same data types from them.

But I seem to remember that NMEA 0183 sentences do not carry a "device" specifier. Each sentence does start with GP.... for a GPS sentence but there isn't a field for identifying which specific piece of equipment sent the sentence. It's a pretty simple protocol. But lots of it is still in use as can be shown by how many devices being sold right now have 0183 capabilities. So it can be a problem if multiple devices are sending the same sentences, especially for GPS antennas that might be separated by some significant distance.

I remember that some installation instructions forbid having more than one 0183 talker with the same sentences on the same network. If you can point me to a specific example that shows different I would love to add that to my knowledge base. I am not an expert on any of this, and certainly not on AIS, so I could be mistaken. I plead Alzheimers if so.
__________________

__________________
exMaggieDrum is offline   Reply With Quote
Old 02-02-2015, 21:41   #63
Registered User

Join Date: Jul 2011
Location: Singapore
Boat: Hunter 326
Posts: 62
Re: Vesper Marine AIS

I've ordered the XB8000. Dealer will program the mmsi number for me.
I've a gps connected to the GX2150 but plan to take nmea out from XB to the vhf set.
Question is should i also program my GX2150 vhf/ais with my mmsi number as well?
Pros & cons?
Thanks.

Ken
__________________
trantor12020 is offline   Reply With Quote
Old 02-02-2015, 21:52   #64
Sponsoring Vendor

Community Sponsor

Join Date: Dec 2010
Location: Auckland, New Zealand
Boat: Nordic 40
Posts: 199
Re: Vesper Marine AIS

Quote:
Originally Posted by trantor12020 View Post
Question is should i also program my GX2150 vhf/ais with my mmsi number as well?
Yes, you should. If the VHF doesn't have its MMSI programmed you can't use the DSC functions (eg. emergency call).

I'm not sure if the GX2150 will do this part though... with the same MMSI as your transponder it shouldn't show your own vessel following along with you. But does anyone know if the GX2150 shows yourself when the MMSI is the same as the AIS?

And thanks for choosing the XB-8000. I hope you enjoy having it.
__________________
Jeff Robbins, Nordic 40 "Vesper", New Zealand
www.vespermarine.com
jeffrobbins is offline   Reply With Quote
Old 03-02-2015, 06:36   #65
Registered User
 
svHyLyte's Avatar

Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,215
Images: 25
Re: Vesper Marine AIS

Quote:
Originally Posted by jeffrobbins View Post
No, we haven't heard of this before. Steve (Ocean Angel) has already been in contact with our tech support and we are working with him directly to identify the cause.
Excellent. Hopefully it's a minor glitch and done with in short order.
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
svHyLyte is offline   Reply With Quote
Old 03-02-2015, 07:00   #66
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,043
Images: 12
Re: Vesper Marine AIS

Quote:
Originally Posted by jeffrobbins View Post
I'm not sure if the GX2150 will do this part though... with the same MMSI as your transponder it shouldn't show your own vessel following along with you. But does anyone know if the GX2150 shows yourself when the MMSI is the same as the AIS?
When the AIS and GX2150 have the same MMSI, the GX2150 knows to ignore it internally and on its display(s).

HOWEVER, if one connects the NMEA output of the GX2150 to anything, they will see themselves on that device. In other words, while the GX2150 ignores its own MMSI data, it transmits these data over its NMEA output.

Strangely, if one is using a single antenna for both the radio and AIS via a splitter, one still sees themselves on the VHF NMEA data. I would have thought not, given that the splitter disconnects the radio when it transmits AIS data.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 03-02-2015, 07:12   #67
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,043
Images: 12
Re: Vesper Marine AIS

Quote:
Originally Posted by exMaggieDrum View Post
I don't think every device is smart enough to recognize which GPS data to use from which GPS. I can program my Furuno NavNet to accept one over the other but I have to select it so it will ignore the other, but I think that is only for NMEA 2000 devices. For example, engine monitoring devices for dual engines, have different device ID's so you can separate the same data types from them.

But I seem to remember that NMEA 0183 sentences do not carry a "device" specifier. Each sentence does start with GP.... for a GPS sentence but there isn't a field for identifying which specific piece of equipment sent the sentence. It's a pretty simple protocol. But lots of it is still in use as can be shown by how many devices being sold right now have 0183 capabilities. So it can be a problem if multiple devices are sending the same sentences, especially for GPS antennas that might be separated by some significant distance.

I remember that some installation instructions forbid having more than one 0183 talker with the same sentences on the same network. If you can point me to a specific example that shows different I would love to add that to my knowledge base. I am not an expert on any of this, and certainly not on AIS, so I could be mistaken. I plead Alzheimers if so.
If we are considering just NMEA2000, then every device is smart enough to be configured to use a specific data source, and multiple sources of similar data can exist on the network with no problem.

For NMEA0183, one cannot just wire multiple talkers of any type of data together. A multiplexer is necessary but, again, multiple sources of similar data can be on the network, with one port selected for main use. Some of the multiplexers even have intelligent switch-over in case of failure.

In all these cases, other similar data sources are ignored, but they do not need to be disconnected. It is no different than having a wind data source on the network, but no instrument to read it.

In the case of AIS, one cannot turn off its dedicated GPS source. So to use a different GPS as a main receiver, one just puts both on the network and chooses the non-AIS GPS.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 03-02-2015, 20:42   #68
Sponsoring Vendor

Community Sponsor

Join Date: Dec 2010
Location: Auckland, New Zealand
Boat: Nordic 40
Posts: 199
Re: Vesper Marine AIS

Quote:
Originally Posted by colemj View Post

In the case of AIS, one cannot turn off its dedicated GPS source. So to use a different GPS as a main receiver, one just puts both on the network and chooses the non-AIS GPS.
You can't turn it off for its own internal use. But for output to other devices....

As far as I know, other AIS transponders don't output GPS PGN's onto the NMEA 2000 network. I've looked at their PGN list and I can't find any with the necessary GPS PGN's as being output. So if that's the case then they can't be used as a positioning source. The Vesper XB-8000 & Vision do output all the required PGN's to be a primary position source and so you can choose to use it or not on your displays. They also have high speed 5Hz calcs which you can enable if you wish.

But for 0183 you can usually tell most (all?) transponders to not output GPS sentences.
__________________
Jeff Robbins, Nordic 40 "Vesper", New Zealand
www.vespermarine.com
jeffrobbins is offline   Reply With Quote
Old 04-02-2015, 05:58   #69
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,043
Images: 12
Re: Vesper Marine AIS

Good point about cutting output of the 0183 - I am always thinking N2K.

I didn't realize that others did not put output on N2K - good on you!

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 11-02-2015, 00:23   #70
Registered User

Join Date: Jul 2011
Location: Singapore
Boat: Hunter 326
Posts: 62
Re: Vesper Marine AIS

1. I've hooked up my XB with dealer supplied cable to the splitter SP160 and antenna VA159 with VM supplied cable. Connect gps, power up, got VSWR shows 6 and status light Amber. So not good I suppose.

2. Moved the antenna a little now VSWR is 7 with status light Green. Is this ok? Should good VSWR be 2 or lower?

Anything I could/should do?

Ken
__________________
trantor12020 is offline   Reply With Quote
Old 11-02-2015, 01:27   #71
Registered User

Join Date: Jul 2011
Location: Singapore
Boat: Hunter 326
Posts: 62
Re: Vesper Marine AIS

Quote:
Originally Posted by trantor12020 View Post
1. I've hooked up my XB with dealer supplied cable to the splitter SP160 and antenna VA159 with VM supplied cable. Connect gps, power up, got VSWR shows 6 and status light Amber. So not good I suppose.

2. Moved the antenna a little now VSWR is 7 with status light Green. Is this ok? Should good VSWR be 2 or lower?

Anything I could/should do?

Ken
Now I've got VSWR of 1. Ok so maybe it takes time for the system to stablise. All seems good. This weekend will setup on boat. Fingers-X.

Ken
__________________
trantor12020 is offline   Reply With Quote
Old 11-02-2015, 01:36   #72
Sponsoring Vendor

Community Sponsor

Join Date: Dec 2010
Location: Auckland, New Zealand
Boat: Nordic 40
Posts: 199
Re: Vesper Marine AIS

Quote:
Originally Posted by trantor12020 View Post
Now I've got VSWR of 1. Ok so maybe it takes time for the system to stablise. All seems good. This weekend will setup on boat. Fingers-X.
Just curious... did you have the antenna with nothing but free-space around it? Or was it near other objects or people?
__________________
Jeff Robbins, Nordic 40 "Vesper", New Zealand
www.vespermarine.com
jeffrobbins is offline   Reply With Quote
Old 11-02-2015, 03:21   #73
Registered User

Join Date: Jul 2011
Location: Singapore
Boat: Hunter 326
Posts: 62
Re: Vesper Marine AIS

Quote:
Originally Posted by jeffrobbins View Post
Just curious... did you have the antenna with nothing but free-space around it? Or was it near other objects or people?
Left antenna on some magazines on table.
__________________
trantor12020 is offline   Reply With Quote
Old 15-02-2015, 19:36   #74
Registered User

Join Date: Jul 2011
Location: Singapore
Boat: Hunter 326
Posts: 62
Re: Vesper Marine AIS

Was on the boat last weekend testing the new XB-8000. One thing leads to another and before I know it, I've installed the works right in the cabin. I choose to leave the GPS antenna inside as I've no problem picking up the satellite signal. I've a patch box where I supply 12V to the AIS and Splitter as well as connecting the NMEA OUT from AIS to GX2150 NMEA IN. Apart from need to set the AIS NMEA OUT to 4800 baud, everything works right out of the box!
I'll need to tidy up the wirings.
Attached Thumbnails
Click image for larger version

Name:	WP_20150214_001.jpg
Views:	146
Size:	150.4 KB
ID:	97199   Click image for larger version

Name:	WP_20150214_002.jpg
Views:	148
Size:	142.4 KB
ID:	97200  

Click image for larger version

Name:	WP_20150214_003.jpg
Views:	135
Size:	184.5 KB
ID:	97201   Click image for larger version

Name:	WP_20150214_004.jpg
Views:	137
Size:	164.3 KB
ID:	97202  

__________________
trantor12020 is offline   Reply With Quote
Old 15-02-2015, 20:21   #75
Sponsoring Vendor

Community Sponsor

Join Date: Dec 2010
Location: Auckland, New Zealand
Boat: Nordic 40
Posts: 199
Re: Vesper Marine AIS

Quote:
Originally Posted by trantor12020 View Post
I choose to leave the GPS antenna inside as I've no problem picking up the satellite signal.
Glad to hear it's all working well. However, I do suggest rotating the GPS antenna so the mushroom top is upwards. I'd expect that orientation to be better and more reliable.
__________________
Jeff Robbins, Nordic 40 "Vesper", New Zealand
www.vespermarine.com
jeffrobbins is offline   Reply With Quote
Reply

Tags
ais, marine

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



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:13.


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.