IRIG becomes the selected reference. The Reference change entry is added to this log.
Authentication Log
Displays log entries for authentication events (e.g., unsuccessful login attempts, an incor-
rectly entered password, etc.) that are made to SecureSync’s command line interfaces
(such as telnet, SSH, FTP, 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: SecureSync has switched from one input reference to another
(for example, IRIG was the selected input being used, but now GNSS is the selected
reference).
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
SecureSync). The receiver will attempt to continue the normal acquisition and track-
ing 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 ref-
erence 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 • SecureSync 2400 User Manual Rev. 2
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