[ntp:questions] what happens when sys.peer turns stratum 16?

Miroslav Lichvar mlichvar at redhat.com
Wed Jun 2 14:12:33 UTC 2010

On 2010-06-02, David J Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
>> GPS18(x) LVC supports a PPS auto off mode which can be enabled with
>> "$PGRMC1,,,,,,,,,,,,,2" command.
> Interesting, Miroslav.  I was referring to this statement in section 
> 4.4.1:
>   "After the initial position fix has been calculated, the PPS signal is 
> generated and continues until the unit is powered down."
> What exactly "auto-off" mode means is something I couldn't find in the 
> technical reference for the 18x.  I would love to think you are right, but 
> I am struggling for evidence at the moment.

I couldn't find a description either, but it seems to work as expected.
PPS is turned off when the sync is lost and turned on when a fix is
back. It works only when the fix status is changed, i.e. the command
itself doesn't change the PPS status.

Miroslav Lichvar

More information about the questions mailing list