Bodet Cristalys Opalys 7 NTP Instructions De Mise En Service Et D'utilisation page 30

Caution: the address configured in the clock must be the same as that entered in
the Multicast NTP server.
5. Press [SELECT] to obtain the Test display menu. This menu enables
you to check that all the clock segments are giving the correct display.
6. Press [SELECT]. The Correction menu appears. This enables you
to correct the time base manually. On leaving the factory, the value of
the offset is 0. The value of this offset may vary (using the [+]) between
-9s99 and +9s99 per 10ms step (#0.12 ppm). The addition of this daily
offset to the time base will be spread over 24 hours.
7. Press [SELECT] again to exit the technician menu and return to the
time display.
Reminder : At any time, holding down the [SELECT] button, then
pressing the [+] button quickly, goes to normal display mode and exits
the configuration menu.
If no buttons are pressed for 10 minutes, the clock returns automatically to time display
mode.
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