TRIMBLE SURVEY GNSS FIRMWARE: Special note on 31 December 2016 leap second

Trimble has made every effort to ensure our receivers will work seamlessly through the addition of one leap second on 31 December 2016. Our current firmware fully supports the introduction of a leap second on 31 December 2016.

In simple terms, the introduction will occur at the UTC cross over between 31 December 2016 and 1 January 2017. GNSS users must determine the time difference from their location to Greenwich Mean Time (GMT) to determine exactly when they should monitor their GNSS receiver.
GLONASS uses UTC in its time system and will introduce a leap second. GLONASS leap second will be introduced at 23:59:60 UTC on 31 December 2016. Any potential issues with tracking of GLONASS will be realized at 00:00:00 UTC on 1 January 2017.
To be vigilant with any continuously operating receivers for monitoring, real time networks, etc., we suggest monitoring all receivers during this period. In the event of any tracking issues during the leap second introduction (23:59:60 UTC on 31 December 2016), a simple power cycle of the receiver will fix the problem (Press and hold down the power button for 30 seconds.  Be sure to back up any static data from the GNSS unit before resetting since it will delete all files on the unit). Below is a summary of how all Trimble GPS/GNSS receiver firmware will behave with the introduction of the leap second.

Current receiver firmware version
The table below shows the current firmware versions for all Trimble receivers (Year 2000 and beyond). Receiver firmware maintenance plans are available for upgrading your receiver to the current firmware version, if required. See your local distributor for information on maintenance plans.


Please contact NEI if you have any questions.


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