Network Time Protocol (NTP) is used to set system clocks accurately to the current time. NTP makes sure that all observations have the correct timestamp.
You can also use GNSS (Global Navigation Satellite System) signals for time synchronization. To be able to use GNSS signals, you must have an external GNSS device in your system and an application that includes a GNSS device component.
Vaisala recommends that you use both NTP (if the system is connected to the Internet) and GNSS signals (if you have an external GNSS device in the system), when possible. If Internet connectivity is not available and you have no GNSS device, you can set the system time manually.
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In the Web UI, go to .
You are logged out of the Web UI. Logout does not happen if you select NTP and the resulting time does not differ considerably from the current system time.
For more information, see DMU801 Time Synchronization Management Guide (M213266EN).