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

[Oppenheimer, David]

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
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