Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

> Tom, > > In my TB monitor kit, I used your Julian date routines, adapted to the 8051 > (no variable greater than 32 bits since my compiler does not support them > either) to apply the GPS offset correction. It was very helpful. > > Didier KO4BB Right. There are many ways to address the 1024

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

Tom, In my TB monitor kit, I used your Julian date routines, adapted to the 8051 (no variable greater than 32 bits since my compiler does not support them either) to apply the GPS offset correction. It was very helpful. Didier KO4BB On Wed, Mar 28, 2018, 7:13 AM Tom Van Baak

[time-nuts] Setting correct date on Trimble Thunderbolt receiver

Thanks, excellent code to do the fixup on Arduinos, etc. Heather already has Julian <-> Gregorian routines that use double precision numbers and allows date/time tweaks to millisecond levels, so I used those. I am modifying the rollover adjustment code to not latch onto a specific rollover

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

Hi > On Mar 28, 2018, at 12:10 AM, Mark Sims wrote: > > Lady Heather's automatic rollover fixer works by looking at the year in any > time message that it sees. If it sees 10 consecutive year values less than > 2016, it assumes the receiver has rollover issues and then

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

Hi Mark, > Heather keeps all times as a double precision Julian date. Using Heather's > code can > be a problem on Arduinos since their "double" precision numbers are actually > 32 bit > single precision, so you would need to do some more complicated math. Ah, more complicated math to solve

[time-nuts] Setting correct date on Trimble Thunderbolt receiver

Lady Heather's automatic rollover fixer works by looking at the year in any time message that it sees. If it sees 10 consecutive year values less than 2016, it assumes the receiver has rollover issues and then adds 1024 weeks worth of seconds to the Julian date/time calculated from the

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

To: time-nuts@febo.com > Subject: [time-nuts] Setting correct date on Trimble Thunderbolt receiver > > Hello all, > I am new to the board and have just received a Trimble Thunderbolt GPS > receiver today. > All is working correctly except the date shows Aug 10 1998. > How do set

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

On Mon, March 26, 2018 6:49 pm, Tom Van Baak wrote: > The bad news is that if you use the Trimble TSIP RS232 interface and if > you want the correct date & time then the software needs to be aware of > the 1024 week (19.6 year) epoch. This "GPS 1024 week rollover" issue Many people do not use the

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

...@gmail.com Sent: 26 March 2018 22:18 To: time-nuts@febo.com Subject: [time-nuts] Setting correct date on Trimble Thunderbolt receiver Hello all, I am new to the board and have just received a Trimble Thunderbolt GPS receiver today. All is working correctly except the date shows Aug 10 1998. How do

Re: [time-nuts] Setting correct date on Trimble Thunderbolt receiver

bject: [time-nuts] Setting correct date on Trimble Thunderbolt receiver > Hello all, > I am new to the board and have just received a Trimble Thunderbolt GPS > receiver today. > All is working correctly except the date shows Aug 10 1998. > How do set the proper date on this? > I a

[time-nuts] Setting correct date on Trimble Thunderbolt receiver

Hello all, I am new to the board and have just received a Trimble Thunderbolt GPS receiver today. All is working correctly except the date shows Aug 10 1998. How do set the proper date on this? I am running TBoltMon to access the unit. Any help would be appreciated. Thanks, Don W9BHI