Vivotek SD7151 User Manual
Page 42
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42 - User's Manual
CCD Settings
Click CCD settings to open the CCD Settings page. In this page, you can set the exposure time and day/
night function.
Exposure:
■ Auto
The Network Camera automatically adjusts the iris and gain, but fixed shutter speed (1/30 s) in response
to different environments. The exposure setting defaults to Auto and works well in most situations.
Depending on ambient lighting conditions, select either to turn on the back light compensation or not; this
feature is only accessible in auto exposure mode.
■ Shutter Priority
Select this option to adjust the desired shutter speed and allow the Network Camera to select an
appropriate iris and gain to obtain the correct exposure. Adjust the shutter speed in sixteen steps from
1/2 second (slowest) ~ 1/10000 second (fastest)
■ Iris Priority
Select this option to adjust the desired iris and allow the Network Camera to select an appropriate shutter
speed and gain to obtain the correct exposure. Adjust the iris in seventeen steps from F1.4 (largest size
of lens aperture opening) ~ F22 (smallest size of lens aperture opening).
■ Manual
Select this option to adjust the desired shutter speed, iris and gain. Adjust the shutter speeds in eleven
steps from 1/60 second (slowest) ~ 1/10000 second (fastest); the iris in seventeen steps from F1.4
(largest size of lens aperture opening) ~ F22 (smallest size of lens aperture opening) and the gain in
fifteen steps from 0db (lowest noise level) ~ 28db (highest noise level).
Day/Night:
■ Auto
The Network Camera automatically switches between day mode and night mode by judging the level of
ambient light. This mode is accessible only when the exposure mode is set to Auto.
■ Day mode
In day mode, the Network Camera switches on the infrared cut filter at all times to block the infrared light
from reaching the sensor so that the colors will not be distorted.
■ Night mode
In night mode, the Network Camera switches off the infrared cut filter to allow the infrared light to pass
through. This improves the sensitivity of the Network Camera in low-light conditions.
■ Schedule mode
The Network Camera switches between day mode and night mode based on specified schedule.