EverFocus EHD300N User Manual
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DIP SWITCH FUNCTION
¾ BLC (Back Light Compensation)
When BLC is turned on, the AGC, FL and IRIS operating point is determined by averaging over
the center area instead of entire field-of-view, so that a dimly-lit foreground object at center area
can be clearly distinguished from brightly-lit backgrounds. BLC should not be used unless it is
needed to compensate for back-light.
The default setting is OFF. For Auto-Iris lens model, the brightness can also be adjusted via the
Iris level control VR.
¾ AGC (Automatic Gain Control)
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.
¾ FL (Flickerless)
When picture flicker fiercely, turn FL on, then the camera will stabilize the speed of electronic shutter at 1/100(S)(NTSC) or 1/120(S)(PAL)
automatically, and reduce the flicker immediately. The default setting is OFF.
¾IRIS Level Control (For Vari-Focal Lens Model)
Brightness Level can be adjusted from the IRIS level VR while using the direct drive lens.
•Turn counterclockwise to L to get darker picture.
•Turn clockwise to H to get brighter picture.¾Electronic Shutter (For Fixed Lens Model)
ES ON: The camera continuously adjusts the shutter speed from 1/60 (NTSC), 1/50 (PAL) second
to 1/100,000 second according to the luminance conditions of the scene.
ES OFF: The shutter speed is fixed at 1/60 (NTSC),1/50 (PAL) second.
Set ES OFF, when auto iris lens is used or flicker is observed under a very bright fluorescent lamp.
Otherwise, turn ES on for optimum performance.