Interlogix FlexZone Series, Руководство по эксплуатации продукта

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Chapter 3: Calibration and setup
68
FlexZone™ Product Guide
Each FlexZone installation includes many site-specific factors, therefore, each
FlexZone
processor must be calibrated to meet the site’s detection requirements.
You can adjust the cable Threshold to increase or decrease the detection
sensitivity for the full length of detecting cable. You can adjust the segment
Threshold to increase or decrease the detection sensitivity of a defined cable
segment. You can specify the number of Events required to trigger an alarm, and
the period of time that must lapse before a subsequent Event will be recorded at
the same location. You can also specify the period of time in which a subsequent
Event must occur.
Figure 70: Detection parameter setup
Defining a zone
When the profile is completed and updated, the sensor cable will have a single
segment which is not assigned to a zone (Zone 0). Begin by assigning Segment
1 to Zone 1.
Setting the cable Threshold
Before recording a sensor plot to locate and identify the cable segments and
zones, set the full length cable Threshold. Use the arrows beside the Cable
Settings chart to lower, or raise the Threshold. A good starting point is to set the
Threshold at 6 dB below the recorded Profile.
Note: You can also adjust the Threshold by left-clicking in the window and using
the up and down arrows on the keyboard, or the mouse wheel.
The cable Threshold represents the received signal level at which the Event
Count is incremented. The cable Threshold is set with respect to the recorded
Sensitivity Profile This provides a uniform Event Threshold for each meter of
detecting cable.
Event Window setting
Event Count setting
Alarm Window setting
cable Threshold adjustment arrows
recorded Profile (gray line)
Threshold set to 6 dB below profile (red line)
(period that must lapse before a subsequent
Event is counted)
(number of Events that will cause an alarm)
(period in which a subsequent must occur)