Functional Description; Synchronisation - WESTERSTRAND CIRCLE LINE NTP User Manual

DOK11108en02
2023-03-31
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Functional description

Start up
When the power is switched on, the clock will display the time from the internal timekeeper.
If no correct time, the display will show lines.
After some seconds, the clock tries to receive a correct time message from an NTP server
and then display correct time.
In case the NTP would disappear, the clock will run on built-in quartz crystal.

Synchronisation

NTP
The clock is prepared for time synchronization by Network Time Protocol (NTP) from an NTP
server. When a correct time message is received the clock will display correct time
automatically.
The colon between hours and minutes will flash when the clock is in sync and the time
message is accepted.
Stand alone
If the clock does not have an external synchronisation, it operates standalone.