Should, however, the above-mentioned higher threshold value no longer be exceeded, the unit
will remain in the 1200-second flywheel mode until either (a) the lower threshold value is no
longer exceeded, or (b) the 1200-second flywheel period expires. In both cases the PPS status
light will turn green again.
Smart reference monitoring is OFF by default. To turn it ON:
1.
Navigate to
MANAGEMENT > OTHER: Disciplining
.
2.
In the
Status
panel on the left, click the GEAR icon. The
Oscillator Settings
window will
open.
3.
Check the box next to
1PPS Phase Validation
and click Submit.
3.3.2.3
BroadShield
What is BroadShield?
BroadShield is an optional software module for NetC
lock 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 detection algorithms. If
a threshold signal monitoring value level is exceeded,
NetClock will emit a Major Alarm and – depending on
your system configuration – invalidate the GPS ref
erence causing NetClock to either transition into Hol
dover mode ("Holdover Mode" on page 210), or go
out of sync.
174
CHAPTER
3
•
NetClock User Reference Guide
Rev.
16
3.3 Managing Input References
Содержание NetClock 9400 Series
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