Colour CCTV Cameras Operating Instructions

ALC: Select this mode when an auto iris lens (ALC
lens) is used with this camera.
ELC: Select this mode when a fixed iris lens or manual
iris lens is used with this camera.
1. Move the cursor to ALC/ELC.
2. Select ALC or ELC.
Cautions:
1. Under bright lighting conditions such as outdoors,
use an ALC type lens because the ELC control
range is not wide enough under these conditions.
2. Use an ALC type lens if the following phenomena
occur:
• Strong smear and/or blooming on highlight
objects such as spotlight or sunlight from win-
dows.
-30-
** CAM SET UP **
CAMERA ID OFF
ALC/ELC ALC
SHUTTER OFF
AGC ON(DNR-H)
SENS UP OFF
SYNC INT
WHITE BAL ATW1
MOTION DET OFF
LENS DRIVE DC
RET
↵↵
↵
↵
• Noticeable flicker in the picture and/or colour
rendition variations.
3. If ELC is selected, SHUTTER is not available.
Back Light Compensation (BACK LIGHT COMP)
Back light compensation is available for both the ALC
and ELC modes. It eliminates strong background light-
ing which makes the camera picture dark, such as a
spotlight. You can select one of two modes (PRESET
ON or PRESET OFF) of back light compensation.
2-1. ALC Mode with PRESET ON
In normal use, the important object in a scene is placed
in the centre of the monitor’s screen. In the factory
setup mode, more photometric weight is given to the
centre of the screen (where the important object is
located) than to the edge of the picture (where a bright
backlight would most likely be located). In this mode,
the object at the centre of the screen will always be
clearly visible regardless of backlight variations.
Note: If ELC is selected, set LEVEL according to this
procedure.