[ntp:questions] TXCO derived PPS and Atom PPS Clock Discipline driver

Viktar Palstsiuk viktar.palstsiuk at promwad.com
Sun Oct 24 11:10:32 UTC 2010

Sure, my TCXO PPS is adjusted by GPS receiver. I also use ntp's NMEA
driver. But there are some cases like after ntpd restart when PPS is
still valid but GPS lost fix. So I use orphan mode for that condition.

On Sun, Oct 24, 2010 at 12:57 PM, Nero Imhard <nim at pipe.nl> wrote:
> Op 18-10-10 15:05, Viktar Palstsiuk schreef:
>> I use TXCO derived PPS. I set date and time manually.
> Not sure what you're trying to do. A TXCO is a frequency source, and not a
> time source. ntp's PPS drivers expect a time source. Each pulse should be
> precisely aligned with the start of a UTC-second.
> If your PPS pulses are not aligned with UTC, you cannot use the signal as a
> time source!
> N

Viktar Palstsiuk

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