HOME BASE
By setting the HOMEBASE position you allow BroadShield to use this location as a ref-
erence position for spoofing detection: Should BroadShield detect that the geographic pos-
ition reported by SecureSync's GPS receiver seems to move beyond the set Alarm
Threshold (even though SecureSync does not move), an alarm will be triggered.
The standard use case is to make your GNSS 1 Position your HOME BASE:
1.
Should the position fields be populated (other than the Alarm Threshold), click
CLEARLOCATION (this will prevent BroadShield from issuing an alarm once you
SAVEd the new position.)
2.
Click USE in the GNSS 1 Position box to apply the settings.
3.
The default Alarm Threshold is 50 m, i.e. any detected position shift beyond a 50-
m circle around the HOMEBASE position will cause an alarm. You can change this
setting to adjust the sensitivity.
4.
Click SAVE to accept the entered values.
A less common use case may be that you want to pre-set the unit's position for later use
e.g., if the SecureSync unit will be deployed in a different location: Set a position manually
by entering lat/long (format: xx.xxxxxx degrees) and alt. Note, however, that this may
cause a spoofing alarm, since BroadShield detects a difference between the HOME BASE
position and the GNSS position.
198
CHAPTER 3 • SecureSync 2400 User Manual Rev. 2
3.3 Managing References