Bodet Cristalys Opalys 7 NTP Instructions De Mise En Service Et D'utilisation page 29

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
confi guration menu.
If no buttons are pressed for 10 minutes, the clock returns automatically to time display mode.
29