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

David J Taylor david-taylor at blueyonder.co.uk.invalid
Wed Jun 2 09:40:15 UTC 2010


"Hal Murray" <hal-usenet at ip-64-139-1-69.sjc.megapath.net> wrote in message 
news:C8OdnQf1SO3ijJvRnZ2dnUVZ_jidnZ2d at megapath.net...
> In article 
> <884d589f-378f-4568-a641-003c6bea925e at d12g2000vbr.googlegroups.com>,
> pc <Paul.Croome at softwareag.com> writes:
>>The Motorola Oncore UT GPS receiver, which was designed as a precision
>>time source, has a T-RAIM (time receiver autonomous integrity
>>monitoring)
>>feature which, properly configured, switches off the PPS output if
>>the receiver loses lock.
>
> But lots of low-cost GPS receivers don't do that.

.. including the popular GPS18 LVC.  So it's better to have a driver which 
reads the serial output of the GPS to confirm lock.

Cheers,
David 




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