Technical data

SPEEDDOME ULTRA 8 CONFIGURATION UTILITY 8200-0600-01, REV. C
OPERATOR’S GUIDE
64 of 138
15. Highlight Exit and press the Focus Far button to select. The Select Preset to Program
screen appears.
16. Program (or reprogram) the Preset by selecting Focus Far to program a preset.
Note: If you change the parameters in the Camera Functions menu or change
Motion Detection Setup for an existing Preset, you will need to reprogram the
Preset to save the changes.
Establishing Scan Limits
Scan limits can be defined in the Dome Configuration Menu. The three types of scan can
only be activated from the Home Position function or from a controller that supports the
DirectSet menu function. The DirectSet menu is not available for domes used with Manchester
protocol.
Once these scan limits are programmed you can choose to run a smooth scan, stepped scan, or
random scan. When active, the scan repeats until interrupted by a camera command, preset,
pattern, or alarm.
Understanding Scan Limits
Scan Limits are two points around the pan axis that define a surveillance area. When a scan is
activated, the dome pans between the two surveillance points— the left and right scan limits.
This helps to ensure that only useful video is being monitored during the scan.
For example, a dome is mounted off the edge of a building to monitor a parking lot. Part of the
observable area in this situation is a wall. By setting left and right scan limits to exclude the
wall, only the viewable area of the parking lot is monitored when a scan is active.
Figure 57 illustrates the scan limits. The dashed circle represents the domes field of view. The
solid line curve represents the scan area. By setting left and right scan limits where the
building’s wall becomes visible, you ensure that only useful video of the parking lot is being
observed when the scan is active.