HIKVISION DS-2CC5181PN-VF User Manual page 15

Day/Night High-definition Dome Camera·User Manual
DAY/NIGHT Auto Switch: The cameras deliver color images
during the day. And as light diminishes at night, the cameras
switch to night mode and deliver black and white images with high
quality.
AGC: AGC is a control circuit that automatically changes the gain
of a receiver or other piece of equipment, so that the desired
output signal remains essentially. When under low illumination,
AGC will regulate the gain and amplification of the video signal.
S/N ratio: It is the ratio of Signal voltage and noise voltage. The
ratio is larger, the effect of noise is less, and the image is clearer.
OSD (On Screen Display): The on-screen display (abbreviated
OSD) is an image superimposed on a screen picture, used for
displaying information and menu.
Synchronous System: Synchronization of the camera usually
contains power synchronization and internal synchronization.
Internal synchronization is realized by the synchronous signal
which is generated by the inside crystal oscillator.
White Balance: White balance can remove the unrealistic color
casts. White balance is the white rendition function of the camera
to adjust the color temperature according to the environment
automatically.
ICR Auto Switch: The filter will filter infrared light during the
daytime and change to normal filter at night to ensure a high
sensitivity and clear image.
BLC: If you focus on an object against strong backlight, the object
will be too dark to be seen clearly. The BLC (Backlight
Compensation) function can compensate light to the object in the
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