It appears there is no command to set the current time in the
Thunderbolt. Too bad. I have some very old Garmin OEMs (GPS35) that
work fine as long as I set the time and date to be close. I just had to
do a RAM reset ( $PGRMI,,,,,,,C <CR> <LF> ) on one which had gotten
corrupted and would not report position properly (all zeros). After
reset, once it got its initial fix it was reporting a date in 1997, but
reports correctly now that the time and date were set (also using the
$PGRMI command). It even has the current GPS week (1959) correct.
David N1HAC
On 7/28/17 11:36 AM, Dave B via time-nuts wrote:
Interesting.
What about NTPD implementations, when using a TB as the reference time
source? Does that handle the week count roll over as well? If that was
added, from what version?
I suspect I may have some updating to do! I use a TB as a frequency
ref' and local NTP/NTPD server reference.
The local TB here is showing "week 1959" top left of LH's display window
(Rev 5.01)
Cheers.
Dave G0WBX.
------------------------------------------------------------------------
On 28/07/17 08:14, time-nuts-requ...@febo.com wrote:
Well quite an unpleasant surprise. So after the 30th do the TBolts stop
Paul,
This topic has been covered a number of times over the years. Some time-nuts have even run
TBolt's under GPS simulators to verify that the 10 MHz and 1PPS outputs will be fine. So
apparently the only effect is that the date & time (in binary TSIP messages) are off by
1024 weeks. This rollover-related effect is by now a "common" issue with many GPS
receivers.
The current version of Mark's Lady Heather program has code to detect this and
fix it so you're good to go for the next 19.6 years.
/tvb
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