User's Manual

ISO 9001:2000 Cert. N°4500/1
Version 1.1 SDT_ARK6_User_Manual_ENG_vATSC Page 95 of 206
4. Holdover ON
 Condition: if the OCXO is no more locked to the selected frequency reference
and the Holdover function is enabled and available, the equipment enters into
holdover mode.
 Associated event: “Holdover ON”.
5. Holdover TMO Expired
 Condition: the Holdover state is “Holdover ON” (the function is enabled) and
the Holdover timeout period elapses prior to regain the lock of the selected
clock reference source.
 Associated event: “Holdover TMO Expired”.