Selection Of The Installation Site - Gira 2551 20 Installation And Operating Instructions Manual

Selecting the installation site
The selection of the installation site and good illumination are critical for good picture
quality.
No backlighting
Do not point the colour camera towards strong backlighting, such as streetlamps or yard
illumination.
Prevent strong sunlight from hitting the lens.
Picture background
Avoid pointing the camera towards extremely bright image backgrounds and back-
grounds with strong contrasts.
Lighting
LEDs integrated in the camera provide an even illumination of the field of view in dark-
ness.
i
Black and white mode in poor lighting conditions
In poor lighting conditions (< 1 lux) or with the field of view illumination switched on, the
colour camera provides black and white pictures only.
If the entry area is equipped with additional illumination, this light source must not shine
directly into the camera lens from the front. The best installation site of an external light
source is above the colour camera.
Installation height
The recommended installation height of the colour camera is 1.50 m.
At this installation height, people with an average height of 1.80 m are optimally pre-
sented.
The minimum installation height is 1.20 m.
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