[ntp:questions] Garmin GPS 18LVC Setup but questions on best way

Steve Kostecke kostecke at ntp.org
Mon Dec 29 17:20:56 UTC 2008


On 2008-12-28, Hal Murray <hal-usenet at ip-64-139-1-69.sjc.megapath.net> wrote:
>
>>Another problem with PPS, specifically in the ATOM drivers is that the
>>driver provides no information about whether or not it is using the PPS
>>signal.
>
> The ATOM driver can't use anything else so all you can get is
> 1 bit for working or not.  Isn't the reach bit mask good enough
> for that?

The Generic NMEA ATOM driver silently uses the PPS signal. The reach bit
mask is populated regardless of whether or not the PPS signal is present
or used. And the ntpq peer billboard does not tell the user if the NMEA
driver is using PPS or just the NMEA sentences.

-- 
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/




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