Left off the biggest and best source of information. read the source code files for the GPS reference clock drivers that comes with NTP. If there is no ref clock driver you can't use the GPS. But there are liley drivers for every GPS, but do check.
How to program the GPS? The NTP ref clock driver will read the config file and send the commands You did not see "timing" on the data sheet because it was not a timing GPS. Here is the data sheet for the current in-production version of the Oncore (it sells for about $60) http://www.synergy-gps.com/images/stories/pdf/m12mt_brochure.pdf On Thu, Mar 1, 2012 at 6:05 PM, Chris Albertson <albertson.ch...@gmail.com> wrote: > On Thu, Mar 1, 2012 at 4:43 PM, Ron Frazier (NTP) > <timekeepingntpl...@c3energy.com> wrote: > >> A) You said it has to be a timing GPS. How do you tell? I haven't seen >> that term in any of the data sheets. > > You down load the user manual and read it BEFORE you place an order on > the GPS receiver. Also check that the manual is well written and > complete and that you can even find a manual to download. > >> >> B) How would I program the unit? I prefer to change the baud rate to at >> least 57,600 and set the NMEA sentence for GPZDA only or GPGGA only. > > If it is a good timing GPS it likey will not be using NMEA. Read > what you wrote above to see the work arounds one needs to make NNMEA > usable. These GPSes will have fixed length binary output >> Chris Albertson Redondo Beach, California _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
