[ANSS-netops] Fwd: TrueTime clock at School Peak has wrong date, adsend turned off

[mwithers at memphis.edu]

If you have adsend configured to get the year from the pc then adsend will
think its January 2, 2013.  But if you check your clock, it probably says 1994.
That's 1024 weeks ago.  We were able to fix ours by manually entering the
correct date in the clock.

Mitch

Center for Earthquake Research and Information (CERI)
University of Memphis                Ph: 901-678-4940
Memphis, TN 38152                   Fax: 901-678-4734


On Sun, 18 Aug 2013, Oppenheimer, David wrote:

> I'm taking the liberty of forwarding Lynn's email to facilitate more rapid
> discussion/recognition of this problem
>
> ---------- Forwarded message ----------
> From: Dietz, Lynn <dietz at usgs.gov>
> Date: Sat, Aug 17, 2013 at 7:55 PM
> Subject: TrueTime clock at School Peak has wrong date, adsend turned off
> To: ncsn_ops at mnlons1.wr.usgs.gov, Lynn Dietz <dietz at usgs.gov>
>
>
> The TrueTime clock at School Peak now thinks it's Jan 2 (should be Aug
> 18).  The hour:min appear to be correct. The trouble started just
> after the UTC day change from Aug 17 to Aug 18, which also happens to
> be a GPS week number change.  I power-cycled the TrueTime, but the
> TrueTIme still thinks it's Jan 2. My gut feel was that there's a
> GPS-week interpretation bug in the TrueTime firmware, but my GPS-savvy
> husband said that neither the 8-bit GPS almanac week nor the 10-bit
> GPS ephemeris week is at roll-over.
>
> I turned of adsend on ad1sp to stop the flow of mis-timestamped analog
> data. The digital data from ad1sp still has correct timestamps.
>
> This will need more attention on Monday.
>
>
>
> -- 
> David Oppenheimer                   office: 650.329.4792
> U.S. Geological Survey              fax:    650.329.4732
> 345 Middlefield Road - MS 977   email: oppen at usgs.gov
> Menlo Park, CA 94025
>