LG LD120P Owner's Manual page 10

Setup
4-pin Dip Switch Setting
This camera has the -pin Dip Switch
for setting.
ON
1 2 3 4
10
1. AGC (Auto Gain Control)
- ON : If the image is too dark,
- OFF : Not used.
2. BLC (Back Light Compensation)
- ON : Sets to this position when
- OFF : Normal position.
3. HSBLC
- ON : Use for masking brightness
- OFF : Not used.
4. WIDE BLC
- ON : Use WIDE BLC option to
ON
OFF
- OFF : Not used.
increase the AGC value to
make the image bright.
strong light comes in
behind the target.
of the specific area to view
the subject more clearly.
view the object clearly in
strong backlight conditions.