[ntp:questions] Re: Please demistify the SHM driver

Tim Shoppa shoppa at trailing-edge.com
Wed Sep 24 13:50:05 UTC 2003

Paul.Croome at softwareag.com (Paul Croome) wrote in message news:<ea26a3f3.0309240143.50ec6d6c at posting.google.com>...
> Well... 4.625 is not a very good value for the jitter of a GPS refclock.
> My GPS (Motorola Oncore) is currently doing:
>      remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> *GPS_ONCORE(0)   .GPS.            0 l    9   16  377    0.000   -0.069   0.004

Apples and Oranges.  GPS_ONCORE is PPS, and he's using a serial-
attached clock.  4.6ms of jitter isn't great for a serial-attached refclock,
but it might be the best his clock does over the serial line.


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