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Starting the devices with fiber optic connection
The devices work out among themselves which is the master (normally the one
synchronized first)
Starting the devices without fiver optic connection
The devices do not send out any time information until there is an LWL connection,
or the devices are reconfigured.
The slave synchronizes to the master.
Whereby stratum/slave = stratum/1
The time of the slave is always set immediately to the master time (no fine
adjustment).
In case of loss of the master GPS, the master stratum increases on the basis of the
configurable parameters up to the maximum stratum. The slave follows, i.e. the
slave stratum is always 1 higher. The slave takes over the master role from a
configurable stratum value (if the status of the slave is better than that of the master)
and synchronizes to its own GPS. The previous master becomes the slave. This
distribution of roles remains until the new master loses GPS synchronization.
The slave assumes the master function in the case of a loss of the master.
If the former master is working again, it assumes the actual time of the current
master and remains in slave mode.
In the case of an fiber optic connection loss, the slave checks the status of the
master over the network and remains in slave mode as long as the master is
accessible and is working normally. If the master is no longer accessible, no longer
sends out any SINEC telegrams, or has a worse status, the slave assumes the
master function.
NTP
The NTP clients select the server with the lower stratum.
DTS Master
DTS Slave
LWL connection (DTS Link)
(option for redundant
operation)
status, time
Ethernet
GPS
receiver
GPS
receiver
status, time
