[ntp:questions] NTP + PPS on Atom motherboards

Thomas Laus 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! :)
>
Ron:

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!

Tom

-- 
Public Keys:
PGP KeyID = 0x5F22FDC1
GnuPG KeyID = 0x620836CF



More information about the questions mailing list