Alc; Shutter/Agc - Bosch NDN-921 Installation And Operation Manual

FlexiDomeHD 720p IP Camera
9.4.2

ALC

ALC level
Adjust the video output level (-15 to 0 to +15).
Select the range within which the ALC will operate. A positive
value is more useful for low-light conditions; a negative value is
more useful for very bright conditions.
Some ALC adjustment may improve scene content when Smart/
BLC is enabled.
Peak average
Adjust the balance between peak and average video control
(-15 to 0 to +15). At -15 the camera controls the average video
level, at +15 the camera controls the peak video level.
A negative value gives more priority to average light levels; a
positive value gives more priority to peak light levels. Video iris
lens: choose an average level for best results (peak settings
may cause oscillations).
Speed
Adjust the speed of the video level control loop (Slow, Medium,
or Fast). For most scenes it should remain at the default value.
9.4.3

Shutter/AGC

Shutter
–
–
Default shutter / Fixed shutter
Select the shutter speed (1/25, 1/50, 1/100, [1/30, 1/60, 1/
120] 1/250, 1/500, 1/1000, 1/2000, 1/5000, 1/10K) for the
default (AES) or fixed value.
In AES mode, the camera tries to maintain the selected shutter
speed as long as the light level of the scene is high enough.
In Fixed mode, select the shutter speed.
Bosch Security Systems
Fixed — allows a user-defined shutter speed.
AES (auto-shutter) — the camera automatically sets the
optimum shutter speed. The camera tries to maintain the
selected default shutter speed as long as the light level of
the scene permits.
Installation and Operation Manual
Advanced Mode | en
AR18-10-B013 | v1.52 | 2011.06
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