User Manual Part 3
Locations Tab
SpectraGuard® Enterprise User Guide
137
Sensor Coverage View
Detection Range is the area over which Sensors can reliably detect wireless activity of devices operating at a power
level greater than the value set in the Transmit Power slider. The Intrusion Detection Display Threshold
determines the threshold for this range.
Prevention Range is the area over which Sensors can prevent unauthorized wireless activity. The Intrusion
Prevention Display Threshold determines the threshold for this range.
Note: Prevention Range view is not visible if WIDS license is applied.
Both detection and prevention ranges are affected by various parameters under AdministrationGlobalLocation
SettingsRF Propagation. The reliability of the prevention also depends on the Intrusion Prevention Level chosen
under AdministrationLocalOperating PoliciesIntrusion Prevention Intrusion Prevention Level.
Calibrating RF Views
Calibration helps in tuning RF parameters used by the system to compare the AP and Sensor predictions to actual
observations. The system has a robust calibration technique that also allows manual intervention in case of
discrepancy. Use the following steps to calibrate RF views:
1. Generate the RF Coverage map using the steps explained in the Viewing RF Coverage Maps section and
then clicking Calibration.
2. To improve predictions, fine-tune the Min. Signal Decay Constant and the Max. Signal Decay
Constant.
Note: Min. Signal Decay Constant specifies the amount of signal loss that is acceptable for regions close to the transmitter
(Sensor). Max. Signal Decay Constant specifies the amount of signal loss that is acceptable for regions away from the
transmitter. Signal loss is directly proportional to the signal decay constants.