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Bosch Security Systems Software manual AM18-Q0635 | v5.6 | 2013.01
8.5 ALC
ALC mode
Select the mode:
– Fluorescent 50 Hz
– Fluorescent 60 Hz
–Outdoor
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.
8.5.1 Exposure/frame rate
Auto exposure/frame rate
Select to let the camera automatically set the optimum shutter
speed. The camera tries to maintain the selected default
shutter speed as long as the light level of the scene permits.
Select the minimum frame rate for automatic exposure:
– 1.5625 to 50 ips
or
– 1.875 to 60 ips
The values available depend on the value set for the Base Frame
Rate in the Installer Menu.
Default shutter
Select a default shutter speed:
– 1/50, 1/100, 1/250, 1/500 (50 ips - outdoor ALC mode)
1/60, 1/120, 1/250, 1/500 (60 ips - outdoor ALC mode)
The default shutter improves the motion performance in auto
exposure mode.
Fixed exposure
Select to set a fixed shutter speed.
Select the shutter speed for fixed exposure:
– 1/25, 1/30, 1/33, 1/40, 1/50, 1/60, 1/100, 1/120 1/250,
1/500, 1/1000, 1/2500, 1/5000, 1/7500, 1/15000
The values available depend on the value set for the ALC mode.