Bodet Cristalys 7 Manuel D'installation page 47

- NTP Mode: one of three modes may be selected:
o Unicast: In Address IP 1, enter the IP address of the NTP server. In this case it is the clock
that calls the NTP server.
It is also possible to set up redundancy (if the first server does not respond, the
second is queried, and so on): for this purpose up to 5 server addresses may be entered
(IP address 1/2/3/4/5).
The Periodicity field sets the frequency with which the clock queries the configured NTP servers.
o Multicast: In this case, the NTP server broadcast the time on the multicast address that
was that given to it. The multicast address of the clients (reveivers) must be the same that the
one on which the server broadcasts.
By default, the Bodet products transmit or receive using the multicast address: 239.192.54.1
The multicast addresses are included between 224.0.0.0 and 239.255.255.255.
o By DHCP: Same mode as Unicast except that the addresses of the NTP servers are gather
automatically via the DHCP server (option 42 on the DHCP server).
The checkbox «continues to display» is used to define the behavior of the clock after a loss of
NTP for 48 hours:
- In «continues to display» OFF, The clock passes to the black with both fixed points.
- In «continues to display» ON, The clock continues to work on its internal quartz.
The Save buttons save the configuration data entered.
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