You can delete logs at any time, see "Clearing Selected Logs" on page309.
4.5.2.1 Types of Logs
NetClock generates log files for the following event categories:
System Log
Displays log entries related to the Timing System events and daemon events (such as the Alarms,
Monitor, Notification, or SNMP daemons starting or stopping, etc.)
Events Log
Displays log entries related to GNSS reception status changes, Sync/Holdover state changes,
SNMP traps being sent, etc. Examples include:
Reference Change: NetClock has switched from one input reference to another (for
example, IRIG was the selected input being used, but now GNSS is the selected ref
erence).
GPS Antenna Problem: The GPS Antenna Problem alarm indicates the GNSS receiver
has detected an over-current or undercurrent condition (an open or short exists in the
GNSS antenna cable, or the GNSS antenna is not connected to NetClock). The receiver
will attempt to continue the normal acquisition and tracking process regardless of the
antenna status. The current draw measurements that will indicate an antenna problem
are:
Under-current indication < 8 mA
Over-current indication > 80 mA
Note: This alarm condition will also be present if a GNSS antenna splitter that
does not contain a load to simulate an antenna being present is being used.
GPS Antenna OK: The antenna coax cable was just connected or an open or short in the
antenna cable was being detected but is no longer being detected.
Frequency Error:The oscillator’s frequency was measured and the frequency error was
too large. Or, the frequency couldn’t be measured because a valid input reference was
not available.
Frequency Error cleared:The Frequency Error alarm was asserted but was then cleared.
In Holdover: Input references were available, but all input references have since been
lost. If the references are not restored before the Holdover period expires, time sync will
be lost.
4.5 Quality Management
CHAPTER 4 • NetClock User Reference Guide Rev. 16
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