EverFocus EZ180 - Manual (Page 12)

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 possible only when used with
an AC power source; it’s not possible with a DC power source.
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