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.
This Reference Phase Offset Data is plotted over time (abscissa) in the Reference Mon-
itor panel in the center of the screen. Use the check boxes in the References panel (2) to
select the reference(s) for which you want to plot the phase offset data. Use the handles
(3) to zoom in on a time window.
The scale of the axis of ordinate (4) is determined by the largest amplitude of any of the ref-
erences displayed in the current time window. Use the checkboxes in the References
panel on the right to remove references from the graph, or add them to it.
3.3.2.2 BroadShield
What is BroadShield?
BroadShield is an optional software module for SecureSync that is capable of detecting
the presence of GPS jamming or spoofing in real time.
How BroadShield Works
BroadShield monitors the GPS signal frequency band by applying proprietary error detec-
tion algorithms. If a threshold signal monitoring value level is exceeded, SecureSync will
emit a Major Alarm and – depending on your system configuration – invalidate the GPS ref-
erence causing SecureSync to either transition into Holdover mode (see"Holdover Mode"
on page224), or go out of sync.
3.3 Managing References
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