[ntp:questions] YEA! My Sure Electronics GPS just arrived.

Ron Frazier (NTP) timekeepingntplist at c3energy.com
Sat Mar 24 06:38:35 UTC 2012

I now have the PPS circuit working on the Sure board.  I have not 
soldered it yet.  I just taped a jumper wire between the PPS test point 
at the edge of the board and the DCD pin 1 on the RS-232 port.  The 
serial data is coming in through the Trendnet TU-S9 serial - USB 
converter, which is passing DCD.  I'm getting + .5 / - 1.5 ms offsets.  
The PPS is nowhere to be seen on the statistics screen, but it is 
obviously working.  I don't know why it's not more centered around zero, 
and maybe that will change.  However, my total peak to peak range of 
offset variance is 2 ms, and that's coming through USB.  If I can 
maintain that level of accuracy, and it's consistent with UTC, then I'm 
very happy.  That's plenty good for my purposes.  I still may try to run 
it through a real serial port on another machine just for kicks.




(PS - If you email me and don't get a quick response, don't be concerned.
I get about 300 emails per day from alternate energy mailing lists and
such.  I don't always see new messages very quickly.  If you need a
reply and have not heard from me in 1 - 2 weeks, send your message again.)

Ron Frazier
timekeepingdude AT c3energy.com

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