Day/Night High-definition Dome Camera·User Manual
Figure 1-1 Privacy Mask
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.
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