From 8 to 18 October, GEObit team is visiting India for scheduled meetings with clients, training sessions and presentations.

Geobit will present new developments, new instruments and smart networking implementation.

Geobit’s India distributor, Pan India Consultants Pvt. Ltd, is organizing the meetings, presentations and training sessions.

GEObit is always next to the customer by providing complete after-sales support and on-site installation/maintenance training. Geobit ‘s clients are always satisfied deploying GEObit seismic networks and recording high-quality data.

GEOtiny20 is a compact miniature digital seismometer that integrates three seismic and three acceleration channels. It supports high-resolution 24bit digitizer, embedded linux OS and GPS or NTP timing. Seedlink server ensures reliable real-time data telemetry while large storage volume ensures long period local data recording. The instrument has very low power consumption so it can operated by getting power from a small 12Vdc battery. Due to its small size provides the ability to be buried underground. Modular sensor interface allows the user to select between a variety of sensor types and frequency corners (20sec, 10sec, 5sec, 2sec, 1sec, 2Hz, 4,5Hz), thus covering the short period and wide-band seismic range. Design simplicity is a great advantage and it is reflected in the price which is the only fraction of the common commercial seismometers. The user is able to deploy even 100% more units than using common seismometers at the same cost.

We are pleased to inform you that all GEObit digitizers are using Garmin GPS receivers for time synchronization, and they will not be affected by the GPS rollover issue. As a result, all our digitizers will continue operating properly. No action needs to be taken by GEObit Instruments users.

At GEObit, we are always working to offer state-of-the-art technology and high-reliability products, requiring the minimum possible maintenance.

What is the GPS Week Number Rollover (WNRO)?

The GPS system is world renowned for its ability to provide accurate and reliable positioning and timing information worldwide. The GPS satellites transmit to users the date and time accurate to nanoseconds. However, back in 1980, when the GPS system first began to keep track of time, the date and time were represented by a counter that could only count forward to a maximum of 1024 weeks, or about 19.7 years. After 1024 weeks had elapsed, this counter “rolled over” to zero, and GPS time started counting forward again.  This first rollover occurred in August of 1999. The second rollover will occur on April 6, 2019.

Is My Geobit Device Affected?

Our GPS supplier, Garmin, has anticipated and prepared for this event. Regardless, Garmin and Geobit have been performing exhaustive testing of current and legacy devices to determine if they will be affected by the GPS week number rollover.  Our testing shows the vast majority of Geobit devices will handle the WNRO without issues.

What is the Effect of a GPS Week Number Rollover Issue?

For GPS devices that are affected, after the rollover occurs, an incorrect date and time will be displayed. This incorrect time will also be used to timestamp track logs, compute sunrise and sunset, and other functions that rely upon the correct date and time. However, the positioning accuracy will not be affected. The device will continue to deliver the same positioning performance as before the rollover.