UCM Calibration
Page 38
FlexPI Product Guide
Setting the Climb Alarm parameters (sustained attack)
With the switches set as illustrated in
, the Climb time is 2 seconds and the Time
Window is 32 seconds. Therefore, if there is 2 seconds of sustained attack activity within a 32
second period, the processor signals a Climb alarm. If the security regulations at your facility do
not define a specific Climb time and Time Window, then these parameters should be set according
to the possibility of nuisance alarms occurring in a specific timeframe. Once the Climb Alarm
parameters are set, monitor the system for nuisance alarms. If nuisance alarms occur, determine
the source of the nuisance alarms and either correct the source, or adjust the Climb Alarm
parameters to ignore the source (i.e., extend the Climb time, extend the Time Window).
1.
Adjust the Climb Alarm parameters, if required (S1 = Climb time, S2 = Time Window).
2.
Test the Climb Alarm settings by performing a series of simulated sustained attacks along the
protected surface.
3.
If the attack simulations always cause alarms, use the current settings and monitor the system
for nuisance alarms.
4.
If the attack simulations do not cause alarms, adjust the Climb Alarm parameters and repeat
the tests.
OR
Increase the Gain/Threshold setting 1 level, and repeat the Climb Alarm tests.
Setting the Cut Alarm parameters (Impact attack)
With the switches set as illustrated in
, the Cut Count is 4 impacts and the Time Window
is 32 seconds. If the security regulations at your facility do not define specific Cut Count and Time
Window settings, then these parameters should be set according to the probability of nuisance
impacts occurring within a specific timeframe. For example, if nuisance impacts can occur, but
never in rapid succession, then the Cut Count can be set to 2 with a short Time Window (e.g., 8
seconds). If nuisance impacts should never occur, an impact count of 1 can be used so that an
intruder cannot defeat the system by waiting between impacts. Once the Cut Alarm parameters
are set, monitor the system for nuisance alarms. If nuisance alarms occur, determine the source of
the nuisance alarms and either correct the source, or adjust the Cut Alarm parameters to ignore
the source (i.e., extend the Time Window, increase the Cut Count).
Note
While setting up and testing the climb alarm parameters you can
disable cut alarm reporting by setting all S3 switches to OFF.
Note
If no Gain/Threshold setting functions for both Cut alarm and Climb
alarm detection, change the Filter Response band, and repeat the
calibration procedure.
If the Gain/Threshold setting is at the maximum level, and detection is
not adequate, redeploy the sensor cable using reduced cable
spacing. Ensure that the cable is in close contact with the protected
surface. Repeat the calibration process after modifying the sensor
cable layout.
OR
If a functional Gain/Threshold setting cannot be found, calibrate the
system with the UCM.
Note
While setting up and testing the cut alarm parameters you can disable
climb alarm reporting by setting all S1 switches to OFF.
