[ANSS-netops] GPS failure at New Mexico Tech Seismological Observatory

[Gee, Lind]

I'm forwarding this from Glenn Biasi.

---------- Forwarded message ----------
From: Glenn Biasi <gbiasi.seismo at gmail.com>
Date: Tue, Jan 28, 2014 at 1:36 PM
Subject: Re: [ANSS-netops] GPS failure at New Mexico Tech Seismological
Observatory
To: "Gee, Lind" <lgee at usgs.gov>, anss-netops at geohazards.usgs.gov
Cc: singate at ees.nmt.edu


 Reftek GPS clocks did a similar thing in August of 1999.  The problem in
that case was that an internal counter of weeks since design start exceeded
1024, so clocks all reset to the date of week 0.  The year could be set
separately, and the time was okay, just not the date.  Revised firmware
revived those GPS units.  The PASSCAL team corporate memory could provide
better details.  No idea whether a similar firmware option is available for
the Geotech GTS-One.

Glenn



On 1/28/14 12:03 PM, Gee, Lind wrote:

I'm forwarding this message for Shane Ingate:

 *********************************************************************
Subject: GPS failure at New Mexico Tech Seismological Observatory

Hello,

I operate the New Mexico Tech Seismological Observatory.  We have two
networks in New Mexico.  Stations are RF-telemetered to a data center where
the signals are digitized, archived and analysed.

On Jan 14, 2014, 1335 UTC, our Geotech GTS-One GPS failed.  Symptoms
include time being reset to UTC midnight Aug 22, 1999.  Every 9 seconds, an
internal counter is reset and the clock resets to UTC midnight Aug 22,
1999.  Mike Stickney of Montana Bureau of Mines and Geology indicates that
his GTS-One failed at exactly the same time with the same symptoms.

We have an older system running the GTS-One, Windows 2000 and an older
12-bit National Instruments digitizer board feeding Earthworm.  We do have
a newer Trimble Thunderbolt E clock, Windows 7 and 16-bit National
Instruments PCle-6343 digitizer board feeding Earthworm.

My question:  We have been having problems setting-up the Thunderbolt clock
to operate with Trimble's own GPS Studio, and zero luck with having it
communicate with the NI PCle-6343 board.  Trimble have been extraordinarily
uninterested in helping us.

Has anyone had experience with this setup that they can share with me?
Are there any low-cost yet reliable solutions that I should consider?

Thanks in advance,

Shane Ingate
NMTSO
singate at ees.nmt.edu
+1/575-835-6611


 ----
 Lind S. Gee

 US Geological Survey
Albuquerque Seismological Laboratory
P.O. Box 82010
Albuquerque NM 87198-2010

 lgee at usgs.gov
505-853-8887 - direct line    243-8887 DSN
505-846-5646 - ASL office   246-5646 DSN
505-846-6973 - fax


_______________________________________________
ANSS-netops mailing
listANSS-netops at geohazards.usgs.govhttps://geohazards.usgs.gov/mailman/listinfo/anss-netops



-- 
Dr. Glenn Biasi
Nevada Seismological Laboratory
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://geohazards.usgs.gov/pipermail/anss-netops/attachments/20140128/3c66138f/attachment-0001.html>