The reference window being displayed will show additional status information and
option-card specific settings. The type of input reference, and the option card model
determine which status information and option card settings will be displayed.
See "Option Cards Overview" on page10 to learn more about the different settings of
available input reference option cards.
To change settings, click the Edit button in the bottom left corner.
4.5.1.4 Reference Monitoring: Phase
The quality of input references can be assessed by comparing their phase offsets against the
current system reference, and against each other. This is called Reference Monitoring.
Reference Monitoring helps to understand and predict system behavior, and is an interference
mitigation tool. It can also be used to manually re-organize reference priorities e.g., by assign-
ing a lower reference priority to a noisy reference or a reference with a significant phase off-
set, or to automatically failover to a different reference if certain quality thresholds are no
longer met (see "Smart Reference Monitoring" on the next page).
SecureSync allows Reference Monitoring by comparing the phase data of references against
the System Ontime Point. The phase values shown are the filtered phase differences between
each input reference 1PPS, and the internal disciplined 1PPS.
The data is plotted in a graph in real-time. The plot also allows you to display historic data,
zoom in on any data range or on a specific reference. A data set can be exported, or deleted.
To monitor the quality of references:
4.5 Quality Management
CHAPTER 4 • SecureSync User Reference Guide Rev. 26
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