Reference Monitoring: Phase - Safran SecureSync 2400 User Manual

4.5 Quality Management
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 Refer-
ence 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 assigning a lower reference priority to a noisy reference or a ref-
erence with a significant phase offset, or to automatically failover to a different
reference if certain quality thresholds are no longer met.
SecureSync allows Reference Monitoring by comparing the phase data of ref-
erences against the System Ontime Point. The phase values shown are the
filtered phase differences between each input reference 1PPS, and the internal dis-
ciplined 1PPS.
The data is plotted in a graph in real-time. The plot also allows you to display his-
toric 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, navigate to TOOLS > SYSTEM: Reference
Monitor. The Reference Monitor screen will display:
On the left side of the screen, Status information is displayed for the System and
the References. Note that the Reference Status panel also displays the latest
PHASE OFFSET reading (1) for active references against the System Ontime
Point. The reading is updated every 30 seconds.
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