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The GNSS Reference

With most applications, VersaSync will be setup such that it utilizes a GNSS signal as the primary (if not the only) timing reference, because the time derived from a GNSS signal is likely to be by far the most accurate time reference available. GNSS satellites (GNSS = Global Navigation Satellite System e.g., GPS, GLONASS, Beidou, Galileo, QZSS) transmit a time signal as part of their data stream, because a very precise time is required to accurately determine your position on earth.

VersaSync's GNSS receiver uses the GNSS signal provided by the antenna.

The GNSS receiver analyzes the incoming GNSS data stream and supplies the GNSS time and 1PPS (Pulse-Per-Second) signal to VersaSync's timing system. The timing system uses the data to control the System Time and discipline the oscillator.

While VersaSync’s default GNSS receiver configuration will likely be adequate for most installations, it is advisable that you familiarize yourself with the basic configuration features so as to achieve the best possible results. This is particularly true if you have poor GNSS reception.

To access the GNSS Receiver settings:

  2. Note: Typically, there will be only one GNSS reference, numbered "0".

  3. The GNSS 0 status window will open. To open the configuration window, click Edit in the bottom-left corner.


  1. Navigate to INTERFACES > REFERENCES: GNSS Reference.
  2. Click on the INFO button, or the GEAR button to configure the GNSS settings, or review GNSS reference status information.