Hi Randy,
I guess they like the intellectual challenge of tweaking PIC bits :)
There is what I think may be a better way to generate the 1PPS: you can use
an Arm micro such as the Philips LPC2102 series to generate a 1PPS output
with 16.7ns settability:
these micros have counter/timers with 32 bits of resolution, they can run at
60MHz (6x the input of 10MHz using an internal PLL), and can generate a pulse
output ("counter Match") anywhere in the second with 16.7ns resolution. They
can even generate multiple outputs, say 1PPS, 10PPS, 100PPS etc all in
paralell.
On top of that, they can generate a software-selectable pulse-width, and can
synchronize themselves to a GPS 1PPS input.
Best of all, they are <<$2 in volume.
For cheap eval boards, see:
_http://www.sparkfun.com/commerce/product_info.php?products_id=667_
(http://www.sparkfun.com/commerce/product_info.php?products_id=667)
That board can generate 5 independent pulse-outputs for $30.
bye,
Said
_______________________________________________
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
