Cisco 8620, Справочное руководство

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Cisco Video Surveillance 8620/8630 IP Camera Reference Guide
Chapter 5 Configuration
Media > Image
The camera may be installed on a vertical, side-facing, or tilted surface in order to accommodate the
interior or exterior design of a building. The interior of a building can be shaped as a narrow rectangular
space, such as corridor. The conventional HD image, such as that of a 16:9 aspect ratio, will be
incongruous with its wide horizontal view. With video rotation, the camera can more readily cover the
field of view on a tall and narrow scene.
Day/Night settings
•
Switch to B/W in night mode—Select this to enable the camera to automatically switch to
Black/White during night mode.
•
IR cut filter—With a removable IR-cut filter, this camera can automatically remove the filter to let
IR light enter the light sensor during low light conditions.
–
Auto mode—The camera automatically removes the filter by judging the level of ambient light.
The Day/Night Exposure Profile will not be available if Auto mode is selected.
– Day mode—The camera switches on the IR cut filter at all times to block infrared light from
reaching the sensor so that the colors will not be distorted.
–
Night mode—The camera switches off the IR cut filter at all times for the sensor to accept
infrared light, thus helping to improve low light sensitivity.
– Synchronize with digital input—The camera automatically removes the IR cut filter when a
digital input is triggered.
–
–Schedule mode—The camera switches between day mode and night mode based on a specified
schedule. Enter the start and end time for day mode. Note that the time format is [hh:mm] and
is expressed in 24-hour clock time. By default, the start and end time of a day mode are set to
07:00 and 18:00.
•
Light sensor sensitivity—Tune the responsiveness of the IR filter to lighting conditions as Low,
Normal, or High.
When completed with the settings on this page, click Save to enable the settings.
IR Control
• Turn on built-in IR illuminator in night mode—Select this to turn on the camera onboard IR
illuminator when the camera detects low light condition and enters the night mode.
•
Turn on external IR illuminator in night mode—Select this to turn on the external IR illuminator
when the camera detects low light condition and enters the night mode. A Digital Output connection
to external IR is needed.
•
Smart IR:
–
Anti-overexposure—When enabled, the camera automatically adjusts the IR projection to
adjacent objects in order to avoid over-exposure in the night mode.
The Smart IR function is more beneficial when the spot of intrusions or an object of your
interest is close to the lens and the IR lights. For example, if an intruder has a chance of getting
near the range of 3 meters, Smart IR can effectively reduce the over-exposure. For a surveillance
area at a greater distance, for example, 5 meters or farther away, the Smart IR function may not
bring as significant benefits as in close range.
The following figure shows these examples:
1—Smart IR disabled; distance: 5M
2—Smart IR enabled; distance: 5M