Auto Exposure Function - Hitachi HV-F31CL Operation Manual

The window position is moved horizontal and vertical.
H POSITION
V POSITION
4. AUTO EXPOSURE* function
*Auto exposure (A.E) is also called Auto Level Control (ALC).
(1) ALC PEAK/AVERAGE
Sets PEAK or AVERAGE signal level detection for the AUTO EXPOSURE function.
-Manual adjustment-
Setting value 2007x0CF h
Set auto level control for Peak or Average in 4 steps of 50/50, 15/85, 25/75, 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.
(2) ALC SPEED
AGC and AES response speed
-Manual adjustment
Setting value 28110xFC h
• SLOW
• STANDARD : Standard setting.
• FAST
: Setting value 30A2xxzz h
xx: AFh to 51h signed [HV-F22] / C4h to 3Ch signed [HV-F31], zz: undefined
: Setting value 30A3xxzz h
xx: C4h to 3Ch signed [HV-F22] / D4h to 2Ch signed [HV-F31], zz: undefined
x: 0- 50/50, 1- 25/75, 2- 15/85, 3- 0/100
x: 0- SLOW, 1- STANDARD, 2- FAST
: Scene brightness variation rate is sufficiently slow to allow stable observing of detail.
Allows a stable image when a strong light source enters the scene.
: Scene brightness variation rate is too rapid to stable use of effects such as microscope
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