normally equals 3600 but drops to lower than 3600 about every 12 hours, the issue is likely
caused by the GNSS antenna having an obstructed view of the sky.
E x a m p l e G P S Q u a l i f i c a t i o n L o g E n t r y :
6 = 151 7 = 1894 8 = 480 9 = 534 10 = 433 12 = 108 Q = 3600
In this example, NetClock tracked no less that 6 satellites for the entire hour. Out of the entire
hour, it was tracking 6 satellites for a cumulative total of 151 seconds (not necessarily in a
row). For the duration of the hour, it was tracking, 7, 8, 9, 10 and 12 satellites for a period of
time. Because it was tracking at least at least one satellite for the entire hour, this Quality value
is Q=3600.
Note: If NetClock is not connected to a GNSS antenna, this log will remain
empty.
Oscillator Log
Displays log entries related to oscillator disciplining. Provides the calculated frequency error
periodically while synchronizing to a reference.
Journal Log
Displays log entries created for all configuration changes that have occurred (such as creating
a new user account, for example).
Update Log
Displays log entries related to software updates that have been performed.
Authentication Log
Displays log entries for authentication events (e.g., unsuccessful login attempts, an incorrectly
entered password, etc.) that are made to NetClock’s command line interfaces (such as the front
panel setup port, telnet, SSH, FTP, etc.).
NTP Log (Not Configurable)
The NTP log displays operational information about the NTP daemon, as well as NTP through
put statistics (e.g., packets/sec.). Examples for entries in this log include indications for when
NTP was synchronized to its configured references (e.g., it became a Stratum1 time server), as
well as stratum level of the NTP references.
The NTP throughput statistics data can be utilized to calculate mean values and the standard
deviation.
Example log entries include:
298
CHAPTER 4 • NetClock User Reference Guide Rev. 16
4.5 Quality Management
To Next Page
Loading...
