Bedienungsanleitung / User manual HEL-IR65D / HEL-IR75D
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Installation: Security notes
All the safety and operating instructions should be read thoroughly before the device is
operated.
Switch off the power supply before opening the device.
The IR-LEDs are only meant for fix installations.
Corresponding national regulations apply.
Please make sure to always keep a distance of > 1m to avoid damages to your
health.
Never look directly into the IR-LEDs – this may cause eye damages!
Please pay attention to the following:
The range of the built-in IR-LEDs strongly depend on the location and the
surroundings. Strongly absorbent surfaces, e.g. dark, rough structures (floor, lawn or
asphalt) may lead to a considerable reduction of the maximum range. Strongly
reflecting surfaces, e.g. plane and smooth structures within the scene to be recorded,
may lead to an irradiation of the picture.
The monochromatic light of the IR-LEDs leads to a considerable contrast reduction of
the recorded picture. IR-LEDs are available with different radiation characteristics. The
beam angle has to be aligned with the focal length of the used lens. The radiation
angle may depend on the surrounding.
Camera adjustments:
(Camera not included in the delivery)
Aperture adjustment should always be done on site. Flange back adjustment and focus
adjustment has to be done on site during darkness and with fully opened aperture in order to
achieve the best possible picture sharpness.
