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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 4–8 illustrates 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
5. Right scan limit reached.
Change direction.
Programming Scan Limits
1. Select Alarms/Areas/Home/Presets/PZ from the Dome Configuration Menu.
2. Select Scan Limits.
The Scan Limits screen appears:
Configuring Alarms, Areas, Home, Privacy Settings, Presets and Scan Limits
Left Scan
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.
ZOOM to mark BOUNDARY
Cancel RIGHT limit to Delete
Limit
Parking
Lot
Dome
Right Scan
Limit
SCAN LIMITS
PAN to LEFT limit
CANCEL
1. Random scan starts
4. Third pause.
Change direction.
2. First pause.
3. Second pause.
Change direction.
4–19
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