Bosch NDN-921 Manuel d'utilisateur télécharger pdf (Page 60)

60 en | Advanced Mode FlexiDomeHD 720p Camera

AR18-10-B013 | v1.52 | 2010.12 Installation and Operation Manual Bosch Security Systems

9.4.4 Day/night

The Day/Night camera is equipped with a motorized IR

(infrared) filter. The IR filter can be removed in low-light or IR-

illuminated applications. There are four different methods of

switching:

– via the alarm input,

– as part of the programmable mode profile,

– automatically, based on the observed light levels, or

– via the settings page.

Note:

For reliable Day/Night switching with an external IR illuminator,

synchronize the switching of the IR filter in the camera with the

IR illuminator using an alarm input port.

Day/night

Auto - the camera switches the IR cut-off filter on and off

depending on the scene illumination level.

Monochrome - the IR cut-off filter is removed, giving full IR

sensitivity.

Color - the camera always produces a color signal regardless of

light levels.

Switch level

Set the video Switch level at which the camera in Auto mode

switches to monochrome operation (-15 to 0 to +15).

A low (negative) value means that the camera switches to

monochrome at a lower light level. A high (positive) value

means that the camera switches to monochrome at a higher

light level.

Priority

In Auto switching mode, set the camera priority to either:

– Color: the camera gives color pictures as long as the light

level permits.

– Motion: the camera gives sharp images without motion

blur as long as the light level permits (it switches to

monochrome earlier than it would with Color priority).

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Bosch NDN-921 Manuel d'utilisateur Page 60