Action required for upcoming GPS problem with Week Number Roll Over for GPS units that pre-date 2015
We have been made aware of an issue with the compact white GPS units supplied by us between 2003 and early 2015. During this time, two different chipsets were used in Güralp GPS units, both chipsets were manufactured by Trimble Inc.
The latest Trimble Product Bulletin explains that these chipsets will both be affected by a WNRO (Week Number Roll Over) event.
This issue is relevant to Güralp customers using the DM24 and CD24 digitisers or instruments integrated with these digitisers (such as the 3ESPCD, the 6TD and the 40TDE) as they use NMEA.
We ask that all requests for any of the above options are sent direct to our firstname.lastname@example.org email address so that we can monitor uptake.
We ask that all requests for support, or replacement parts/units for this issue are sent through the email@example.com email address so that we can track demand as effectively as possible.
You can read more about the issue in an article on Nature.com here. (External link)
We will keep our guidance note page as up to date as possible based on the information we receive from the manufacturer and the solutions we can offer to overcome the issues. If you would like to subscribe to hear support updates on this subject please email firstname.lastname@example.org
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For urgent enquiries please call 020 3727 1000 and speak to Fergus Wheeler, Louisa Feltes or Jess Gill.
Güralp Systems Ltd.(www.guralp.com) is a leading global provider of sophisticated seismic monitoring solutions used to understand natural seismological events such as earthquakes, aftershocks and volcanos, as well as induced seismic events, or seismic signals, resulting from human activity.
Our solutions are used in research, civil and industrial applications to increase understanding, optimise processes and to protect people and the environment. Our equipment is installed in all major ocean basins and across all continents worldwide.
Our instruments range in performance from very low frequency, very low noise for global seismology to high dynamic range instruments for local, strong motion monitoring. Our sensors and can be supplied for deployment at the surface, in boreholes and on the ocean bottom. We also provide data acquisition equipment, power and communication accessories and data interpretation software.
Our services include installation and commissioning; network operation; repair and maintenance services; data processing and interpretation.
Headquartered in Reading, in the UK, we have been operating for more than 30 years and have established a global network of distributors who provide local customer support and sales services.