[ntp:questions] NTP + PPS on Atom motherboards
lausts at acm.org
Thu Aug 2 00:39:39 UTC 2012
On 2012-08-01, Hahn, Ron <ron.hahn at fmr.com> wrote:
> the PPS pulse width. Maybe with the Fat PPS board? This is reminding
> me of the old days. Printers and Terminals! :)
All of my TAPR boards also drive the RS-232 PPS pin with a 'low-z' output.
They use 4 sections in parallel from a 74AC04N that gets it's input
from the PPS output pin on the Oncore. This may stretch the pulse a little,
but the pulse is very sharp!
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