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5. ALC
ALC is for brightness control functions Auto Iris, AGC and AES.
1) OVER RIDE
: Auto iris level setting
ALC level setting in range of
-
128 to 127 (about
±
2 F stops).
Press R and L for respectively higher or lower video level
settings.
Press both L and R for about 2 seconds to set to 0.
2) SPEED
: AGC and AES response speed
•
SLOW
: Slow response to scene light variations.
Allows a stable image when a strong light source.
e.g. vehicle headlights, enters the scene.
•
STANDARD : Normal setting
•
FAST
: Quick response to scene light variations.
It is used where variations are sudden, such as changing a microscope magnification.
3) PEAK/AVERAGE
: Set auto level control for Peak or Average in 4 steps of 50/50, 25/75, 18/85 or 0/100.
At high Average setting, background may be difficult to see in picture bright components. Increasing the
Peak setting may render spotlighted components easier to see.
4) ALC GATE
: ON/OFF toggle
•
ON : Video signal of the specified area is detected for controlling AGC, lens and ALC of auto electronic
shutter. GATE SELECT is displayed 1 line below and the detection area can be selected.
•
OFF : Video signal of the entire screen is detected for ALC control.
ALC [ FILE1 ]
OVER RIDE : 0
SPEED :STANDARD
PEAK/AVE :15/85
ALC GATE :ON
GATE SEL :MANUAL
MANU GATE EDIT:[PUSH R]