Raystar 125 wrong year

[DipperToo]

Hi.
I am unsure if this has been asked before but my C80 now shows the date as 29 August 2003 and I think it was fine a few months ago. Is this the rollover which these older units do not support? It seems that the time and position data are all ok.
I have an ais transponder which has an option to provide gps data with the ais data stream. If I enable this is there anything else I need to do to my C80 to get it to accept thus new gps source? Should I disconnect the old raystar?
It is a pain seeing all the wrong dates and for each tidal diamond I have to manually change the date!
Thanks for any advice.

 

[[194224]]

That certainly looks like the rollover issue with your GPS source as the date is 1024 (2^10) weeks out. I can't understand why it might have been correct a few months ago as the last rollover was in April 2019. Unless of course you have changed the source of the GPS input to the plotter.

 

[[70521]]

My Garmin GPS did the same in 2021, it went back to 2002. After a quick chat with their support team a firmware update fixed the problem.

 

[DipperToo]

I have since carried on looking at the Internet and it did seem that there was a report buried on the Raymarine site stating March 2023 when the raystar 125s would not give a correct date due to some sort of rollover in 2022. Additionally, there would be no updates. I am sure that in the coming weeks others may notice this?

The extract from a cruiser forum said.... 'there was an internal tech bulletin that discussed a rollover event in 2022 that affects the RS125'

Nothing has changed on the boat for several years as regards configuration.

 

[DipperToo]

I attach a file which shows that after 2022 the RS125 along other devices may show an incorrect date. Solution is a new transducer!
Interesting that this date for the RS125 falls between the recognised rollover dates which is what confused me.

 

[[194224]]

That's interesting. As I read it though it seems a new antenna is required. I am not sure what transducer you mean. Perhaps I've misread it.

 

[DipperToo]

Apologies - meant antenna (gps receiver).
When I return from this trip I will bring my laptop down to reconfigure my ais transponder to output the gps position data on the 38400 nmea connection to my plotter and unless someone says otherwise, I understand that I will need to decongestant the old raystar 125 otherwise the C80 will allow seatalk gps data to take preference?

 

[PaulRainbow]

Apologies - meant antenna (gps receiver).
When I return from this trip I will bring my laptop down to reconfigure my ais transponder to output the gps position data on the 38400 nmea connection to my plotter and unless someone says otherwise, I understand that I will need to decongestant the old raystar 125 otherwise the C80 will allow seatalk gps data to take preference?

As the Raystar 125 will be redundant, you should remove it.

 

[[194224]]

Quite a few used RS125 GPS antennas on ebay. I wonder why.

 

[jac]

As the Raystar 125 will be redundant, you should remove it.

Only value in keeping it would be as a back up GPS. As you say, position is ok so handy in case your main GPS dies. ONly take it out when you have an instrument that needs the space!

 

[PaulRainbow]

Only value in keeping it would be as a back up GPS. As you say, position is ok so handy in case your main GPS dies. ONly take it out when you have an instrument that needs the space!

The Raystar 125 is just the GPS antenna/receiver, don't think you'd want to fit an instrument in its place

 

[KREW2]

I also had a C80 and my raystar 125 packed up completely. I put a new battery in it and all was well for a while, then after about 3 months it stopped working again. I bought a new GPS antenna from JG tech and it all worked fine but would not connect with Seatalk. I was happy to keep the plotter and radar as stand alone units, unfortunately it did not connect with the heading sensor, thus losing MARPA facility.
Seatalk is bespoke and if one thing goes it seems to affect the whole system. I gave up trying to sort it so I took the plunge and and upgraded to Quantum Element system which is able to be connected to the Seatalk system via converter converters.

 

[ashtead]

This issue was mentioned to me by a fellow Haslar pontoon boat last week or so . He has a replacement Axiom and I have raymarine E however I have thought these units had internal GPS so while this might not apply to a C unit I did wonder what effect the 125 date issue might have on those later units?

 

[Slipstream 34]

We had a similar problem last week with our Raystar 125. Try turning off the differential gps setting and turning on all the WAAS, EGNOS etc settings. Date now reading correctly.

 

[jwfrary]

So the roll over effected units, there's issues with older units being able to accept the differential corrections if the date is wrong.

So while the poisition is OK, it's not a good as spec and likely pre diff correction standard ie 10-20 meters on a good day.

This can all be solved with a fireware update, however whether the manufacturer actually writes and distributes the firmware is a different thing!

I have a novotel survey gnss system about 30 grands worth which is completely useless(well maybe as a paperweight) for the same reason!

I did Actully find in the equipment store a very expensive in its day gnss system, which was pre mellinum, and yes no one had thought to have the bios go past the year 1999, so these issues are not new!

 

[DipperToo]

I cannot find the answers online so....
if I disconnect the Raystar 125, how will this affect the s2 course computer?
Does the C80 publish the gps data it receives emneded on the 38400 AIS stream to the seatalk bus which is connected to the s2 course computer and the C80?
If so, it will save a lot of hassle - especially as my ICS Navtex no longer logs data or weather messages due to the date issue.
Thanks for any pointers re the nmea to seatalk question.

 

[jwfrary]

The autopilot shouldn't care about GPS, even in track mode it's just looking at the sentence produced buy the plotter.

The C80 behavior, you are just going to have to try! It should put tge data on the seatalk bus, but I'm unsure if it will use GPS data at 38000 baud, it may only use the Ais data.

Worst case youll need to upgrade the GPS Puck, maybe a rs150, but you'll also need a seatalk to seatalk NG kit for that....

Theres several nmea 0183 smart antenna on the market digital yacht do one, so that could work for you.

 

[PaulRainbow]

The C80 should take GPS data from the AIS at 34800. 38400

 

[[194224]]

The C80 should take GPS data from the AIS at 34800.

Small typo there Paul, 38400

 

[Poecheng]

I have a C90W MFD with a ST60+ system and SmartPilotX10/ST6002+ autopilot.
I believe my antenna is a surface mounted Raystar 125
My C90W (using the external antenna) is showing the date August 2003 (I was checking it for a separate AIS issue) but does not seem to be affected by that.
I did turn off DiffGPS and checked that the others were 'ON' (see #14) but nothing changed so I turned the Diff back on.
Does anyone know whether there a real world effect to not having the correct date in the plotter's brain ?