A random scan pans randomly between the left and right scan limits. For example, the scan may start at point in the scan, then pan right 40° and pause, pan right 10° and pause, pan left 20° and pause, and pan right until it reaches the right scan limit. Figure 4–8illustrates a random scan. In this figure, the dashed line represents the scan area, and the solid line represents the scan pattern. The circle on the scan represents the start point. Each arrowhead represents a pause. “X” represents a change in direction.

Figure 4–8: Random Scan

Building

5.Right scan limit reached. Change direction.

1.

Random scan starts

 

4. Third pause.

 

Change direction.

Left Scan

2. First pause.

Limit

Parking

 

Lot

3. Second pause.

Dome

 

Change direction.

Right Scan

Limit

Programming Scan Limits

Note: Scan Limits can only be used with controllers that support the Quick Set menu.

The Quick Set menu is not available for domes used with the Manchester protocol.

1.Select Alarms/Areas/Home/Presets/PZ from the Dome Configuration Menu.

2.Select Scan Limits.

The Scan Limits screen appears:

SCAN LIMITS

PAN to LEFT limit

ZOOM to mark BOUNDARY

Cancel RIGHT limit to Delete

CANCEL

Configuring Alarms, Areas, Home, Privacy Settings, Presets and Scan Limits

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