Calnex Sentinel - Appendix D: List of Sentinel Log Messages

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Appendix D: List of Sentinel Log Messages
The following table details messages that will appear on the Log page of the System menu, their meaning and
whether any troubleshooting actions are required.
System Events
Log Text
Explanation
Action Required
Started up
System start up
None
Powering system down
System power down
None
Configuration data was
restored from backup as errors
were detected
Configuration integrity check failed,
data restored from last good settings
Ensure that Sentinel power
down procedure is followed.
Last power down was
unexpected
System shutdown procedure was not
followed
Ensure that Sentinel power
down procedure is followed.
Rubidium Events
Log Text
Explanation
Action Required
Entering transport mode
Battery backed up transport mode
was selected during shutdown
None
Warming Up
Initial Rubidium state when Sentinel is
powered on from cold. Takes
~10mins to warm up
Error condition only if Rubidium
remains in this state constantly.
In this case export a problem
report and power cycle Sentinel.
Hold-Over
Rubidium will enter Hold-Over when
the Internal Reference
Disciplining Source is set to Ext 1
PPS in the
Measurement->Timebase page
and there is no External 1 PPS input
present
None
Manual Hold-Over
Rubidium is placed in Manual Hold-
Over by the software, when starting a
measurement and Not during
measurement is selected as the
Internal Reference Disciplining
Mode or Never is selected as the
disciplining mode in the
Measurement->Timebase page or
when the Internal Reference
Disciplining source is GNSS and
GNSS is in the unlocked state
None
Disciplining
Rubidium is disciplining to a valid 1
PPS source (External 1 PPS or GNSS)
None
Initialising Rubidium
Rubidium phase information was not
maintained during last power down.
None
No initialisation required
Rubidium phase information was
maintained during last power down.
None. Either AC cord was left
connected or transport mode
was successful.