[time-nuts] gpsd 1pps pulse?

Azelio Boriani azelio.boriani at screen.it
Mon May 6 10:21:05 EDT 2013

Yes, the rising edge is the usual UTC reference for the PPS pulse. The PPS
is used to trigger the interrupt on its rising edge so a 10uS long pulse
should be enough.

On Mon, May 6, 2013 at 3:38 PM, Chuck Forsberg WA7KGX N2469R
<caf at omen.com>wrote:

> I would like to set up a NTP server on a machine running Linux
> (currently Korora 18).
> What are the requirements for the 1 PPS signal fed to the carrier detect
> pin?
> I presume the 10 us 1pps from the Thunderbolt is too narrow.
> I assume the rising edge of CD is the one gpsd triggers on.
> --
>      Chuck Forsberg WA7KGX   caf at omen.com   www.omen.com
> Developer of Industrial ZMODEM(Tm) for Embedded Applications
>   Omen Technology Inc      "The High Reliability Software"
> 10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430
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