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Appendix I : NTP programming
IP function programming
The programming is carried out in 2 steps.
1 – Program the IP output (parameters supplied by the network administrator) from the
technician menu of the master clock (see page 26).
2 – Software configuration.
Start the PC software and then load the USB backup of your master clock.
In the menu, select "Time outputs" and "NTP server client".
The master clock is an NTP client
In the Configuration menu, select Time base then in the section Time synchronisation select
NTP from the dropdown menu
On this NTP Client screen, it is possible to choose the mode of transmission of the time signal.
Broadcast : the Sigma receives the time sent to all the products in the network.
Multicast : the Sigma receives the time sent only by the address on which the server transmits.
Unicast : the Sigma receives the time sent by a few selected NTP server IP addresses.
It is possible to add the key number of the server to make the distribution secure.
The "Force master clock time setting with respect to server on starting" option will order the
master clock to connect to the address of the server and take the time there on starting.
Caution: The NTP user does not synchronize if the difference between the client and the server
is greater than 1000 seconds.
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