[ntp:questions] PPS indication in ntpq

Harlan Stenn stenn at ntp.org
Tue Aug 2 21:55:42 UTC 2011

Hi Miguel,

> On 2 August 2011 22:29, Harlan Stenn <stenn at ntp.org> wrote:
> > Hi Miuel,
sorry about the typo...

>> I notice your different systems are using different mode bits - it
>> looks like both units are processing $GPGGA, with one defaulting to
>> 4800 baud and the other explicitly using 4800 baud.
> This is deliberate.

OK, no problem - as I said:
>> This should make no difference, but I noticed it.
>> http://support.ntp.org/bin/view/Support/TroubleshootingNTP#Section_9.4.
>> describes the tally codes ('o', '*', etc), and I wonder if it might
>> be that one machine is seeing the PPS signal and the other is not, or
>> perhaps NTP is only seeing the PPS signal on one machine.
> This is what I'm thinking... I'm assuming o is seeing PPS and the
> other one is not. Right?

I believe so, yes.  Does the other one ever switch to 'o'?


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