[ntp:questions] Doubt about Syncronization of GPS SPECTRACOM(2)

Ronan Flood usenet at umbral.org.uk
Mon Mar 5 14:37:20 UTC 2007


On Fri, 2 Mar 2007 16:56:50 GMT, mlonisto at gmail.com (Marcos Onisto) wrote:

> > What does "ntpq -ccl" show on your working server?
> 
> $ ntpq -ccl
> status=0303 clk_fault, last_clk_fault
> device="Spectracom WWVB/GPS Receivers",
> timecode="  07 061 16:50:46.001  S", poll=5348, noreply=0, badformat=0,
> baddata=90, fudgetime1=0.000, stratum=0, refid=WWVB, flags=0

The timecode is Spectracom format 2.  I note by the way that
refclock_wwvb also supports the Netclock/GPS, so possibly this
*is* a GPS rather than WWVB clock -- I don't know if you would
be able to receive WWVB in Brazil, actually ...

> > I asked you before what "ls -l /dev/wwvb2" shows ...
> 
> $ ls -l /dev/wwv*
> lrwxrwxrwx   1 root     other         49 Jul  4  2006 /dev/wwvb1 ->
> ../devices/pci at 1f,0/pci at 1,1/ebus at 1/su at 14,3803f8:a
> lrwxrwxrwx   1 root     other         49 Jul  3  2006 /dev/wwvb2 ->
> ../devices/pci at 1f,0/pci at 1,1/ebus at 1/su at 14,3602f8:b

Uh, I don't know what that means, I expected a link to /dev/term/b
or /dev/cua/b rather than the raw device, but if it works OK.

I think that's as far as I get; you need to find out exactly what
you're connecting to and what the various cables are doing.  There
are PDF manuals for various Spectracom clocks available on the
net if they might help.

-- 
Ronan Flood <usenet at umbral.org.uk>




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