[time-nuts] Low cost GPS module for < 100ns timestamping error
EWKehren at aol.com
EWKehren at aol.com
Sat May 3 10:01:03 EDT 2014
Tony
There seem to be many variables. Cost, power, how many, overall stability
etc. Most likely you will find that the GPS module is not the most expensive
part but the VCXO. It also makes a large difference if it is one off or a
larger volume is needed. You can always find a bargain, and maybe a close
out sale but if you have to look at a continuous supply the picture changes
dramatically and also the design.
Bert Kehren
In a message dated 5/2/2014 11:40:47 P.M. Eastern Daylight Time,
tnuts at toneh.demon.co.uk writes:
On 03/05/2014 00:59, EWKehren at aol.com wrote:
> Welcome to the nuts Tony
Thanks, Bert.
> You are not specifying exactly how accurate time has to be but in my book
> and based on tests the most reasonable priced GPS with 1 pps is a
> Ublox 6M
> that you can get with antenna for less than $ 22 antenna included from
> _www.DX.com_ (http://www.DX.com) . They have volume discount.
> Shipping is very
> slow but included. They seem to be presently out of the 1 pps version but
> all ublox units have a 1 pps output and I use with and without and all
> I do is
> solder a wire to pin 3.
> Bert Kehren
As I said in my first post I'd like to achieve an accuracy of better
than 100ns - or 50ns if possible at reasonable cost.
I had come across the Ublox 6M when I was looking earlier, but I
misunderstood the data sheet and thought it was only the expensive
($135) LEA/NEO-6T versions which provided timing. Definitely worth a
closer look - the NEO-6M is specced at 30ns RMS which is good enough.
The power consumption is a little higher than I would have liked at
37mA/3V, but still rather less than others.
Thanks,
Tony
_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
More information about the time-nuts
mailing list