FLFlickerless ON/OFF, LL Line-Lock Off/On

The 4 DIP switch also locate on the side circuit board, they are Flickerless, Back Light Comp, Auto Gain Control and Line Lock accordingly.

FL Normal	On
BLC Normal	On
AGC Off	On
LL Off	On

ControlDIP switchSwitches

FL(Flickerless) ON/OFF

When picture flicker fiercely, turn FL on, then the camera will stabilize the speed of electronic shutter at 1/100(NTSC) or 1/120(PAL) automatically, and reduce the flicker immediately. The default setting is Off.

BLC (Back Light Compensation) ON/OFF

When BLC is turned on, the AGC, ES and IRIS operating points are determined by averaging over the center area instead of entire field-of-view, so that foreground object at center area can be clearly distinguished from brightly backgrounds.

BLC should not be used unless it is needed to compensate for strong backlight. The default setting is Off.

AGC (Automatic Gain Control) Off/On

AGC ON: The sensitivity increases automatically when light is low.

AGC OFF: A-low-noise picture is obtained under a low light condition.

The default setting is ON.

LL (Line-Lock) Off/On

To select the sync mode between Internal Sync.(LL off) and Line-Lock (LL on).

Set the line-lock off, the camera will synchronize to the internal time base. Set the line-lock on, the camera’s vertical synchronization can be driven by the AC signal in the power lines.

The default setting is Off.

Note: Line-Lock sync mode operation is working only when used with an AC power source; it is not working with a DC power source.