46240 gps
Small Trimble GPS. On a large fleet of vehicles in New Zealand.
on the 28/7/19 the date jumped back to Dec 1999. I have checked and this does not appear to be the normal week number issue that occured in April 2019. Any ideas why the date is wrong now.
We are using the NMEA ZDA string and its showing Dec 1999 instead of July 2019
Mike
Hi Michael
Your product is a Lassen SQ which would be over 10 years old. Here is a link to the WNRO page for Trimble Embedded GPS:
https://www.trimble.com/wnro/products/embedded.aspx
As you can see the Lassen SQ is non-compliant, however there is meant to be a NMEA workaround patch available.
Unfortunately I don't have detail informationon the patch as this is not a product I support. Therefore I would recommend you contact the Trimble Embedded Systems Support Group (tsgsupport@trimble.com) to see if you can get details of this patch.
Regards
James
Thanks James. Yes that is exactly the info we needed. We have made the change a few weeks ago to fix the rollover problem in our software and wil leave the GPS date 1024 weeks in the past. At least we know there is nothing else we can do except for fitting Condor C2626 in place. Its a pity they never tested for the 1024 week roll over years ago and had it handled from the start, and as the GPSs are installed all over the countr. We only purchased some of these in 2010.
On more investigation I case see the trimble GPS receivers sold in the last 10 years have this bug. so its pretty fair to assume this GPS has the bug in it where they failed to handle to 1024 week rollover.
Does anyone at Trimble have a plan to resolve this? Specifically the NMEA ZDA string been incorrect.