098-00720-000 Revision D1 – February, 2018 SyncServer 600 Series User’s Guide 147
Chapter 4
Navigation Windows
Fast-track The selected input has been
qualified and the firmware
clock servo begins to actively
converge the output to the
selected input. This is the
transitional phase that leads
to the Locked clock state.
Typical duration for Quartz
and Rubidium: 20 minutes
Freerun The unit no longer has a
qualified input.
Normal Clock stabilized
Locked The unit has a qualified input
and is locked to the reference.
Recovery Clock not stabilized
adequately
Bridging The unit no longer has a
qualified input.
Bridging The unit no longer has a
qualified reference, but
remains operating within
performance associated with
Locked operation.
Holdover Bridging time exceeded
Normal Input reference re-qualified
in less than bridging time.
Holdover The unit no longer has a
qualified reference.
Recovery Input becomes qualified
Recovery The selected input has been
qualified and the firmware
clock servo begins to actively
converge the output to the
selected input.
Holdover The unit no longer has a
qualified input.
Locked Clock stabilized
Table 4-17. Clock Status (Continued)
SyncServer
Clock Status
Description
Possible Next
State
Conditions Required
for Next Transition
State
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