1/10/2024 0 Comments Gps week number rolloverTimeTools recommends replacing these devices with new T-Series units. The GPS receivers used in these models are now obsolete. The tServe 5000 series models have been out of production for over 10 years. TimeTools s5000, s5100 and s5500 models have been out of production for over 10 years. However, TimeTools strongly recommends that the SR-SC Series firmware is kept up to date. Summary: No immediate action is required. The receivers have a base week number derived from the firmware build date.Īll models up to serial number SR1443 (manufactured before April 2010) week number rollover: June 2025Īll models after serial number SR1443 (manufactured after April 2010) week number rollover: 29 December 2029. The next time the counter will reach week 1023 and rollover to zero is on April 6, 2019. Certain GPS-enabled Zebra mobile computing devices with older software images may be affected by an industry-wide change in the GPS, starting at 12:00 GMT Midnight on November 3 rd, 2019. The week counter then reset to zero, and it has been recounting ever since. The 1024 weeks counter ran out and rolled over on August 21, 1999. Legacy Models TimeTools SR, SC and LC Series Models This limits the range of the week number to 0 1023, or 1024 total weeks. Summary: No immediate action is required. However, TimeTools strongly recommends that the T-Series firmware is kept up to date. Currently, the week number of these devices will rollover on 9 August 2036. The receivers have a software updatable base week to extend the week number. TimeTools T100, T300 and T550 models utilize Trimble GPS and Multi-GNSS receivers. The next rollover event is due on 6th April 2019. The start date for the week number count was 6th January 1980. Therefore, every 1024 weeks, the week number rolls over to zero. The GPS system stores the current week number as a 10-bit number. On 6 April 2019 there will be a Global Positioning System (GPS) week number (WN) rollover on Coordinated Universal Time derived from GPS receivers and devices.
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