DAGE-MTI CCD-100 Manuale d'uso - Pagina 8

Sfoglia online o scarica il pdf Manuale d'uso per Telecamera di sicurezza DAGE-MTI CCD-100. DAGE-MTI CCD-100 17. Camera system

Note: When using the camera in the AUTO EE mode

under certain types of lighting such as fluorescent, the

camera's output signal may seem as though it is

changing in level. This is due to the cyclical nature of the

fluorescent light. While the human eye is not capable of

viewing the light difference cycle of fluorescent lighting,

the shuttered CCD is able to see it.

BLACK LEVEL

The black level determines the output level of the darkest

portions of the image. The

manual or automatic mode to set the output video's blacks.

MANUAL

In the

determined by the

switch. This control allows the user to set the black level

to the desired position. Note that the detail below the

black set point will be lost, so the black level should be

set such that all of the useful information is visible.

AUTO

In the

the video signal are determined by the camera. This

position is useful in applications where the contrast level

of the incoming light is low and it is necessary for the

camera to expand that contrast. The camera will take the

darkest portion of the signal, which may not be close to

black in reality, and pull it down to black. This has the

effect of actually "stretching" the contrast of the signal.

Care should be taken to realize that the output signal may

not truly represent the input light level when the camera

is in this position.

BLK

black position, the video black level is

MAN

BLACK

black position, the darkest portions of

AUTO

switch allows either a

pot located above the

BLACK