Bosch Appliances NBN-921 operation manual 2 ALC, Shutter/AGC

DinionHD 720p IP Camera Advanced Mode en 57

9.4.2ALC

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.

9.4.3Shutter/AGC

Shutter

–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.

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 Installation and Operation Manual AR18-10-B013 v1.52 2011.06