Delta CS-H9-70HG User Manual page 98

Ip camera tester
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②Factors affecting measurement results
Based on the principle of physics, it cannot be ruled out that there will be error when some specifi c
object table is measured. For example:
--- A transparent surface (glass, water, etc.),
--- Reflective surfaces (polished metal, glass),
--- A porous surface (e.g. sound insulation material),
--- A textured surface (e.g. rough stucco walls, natural stone).
When the laser is irradiated to the surface of the object for ranging, it is necessary to place a suitable the
laser aiming target (user-supplied) to assist the measurement. If not, replace it with an object (such as
white paper) that has a smooth surface but does not directly reflect specular light, but rather scatters.
False measurements can also occur if the target point is not properly aimed.
In addition, air layers with different temperatures and indirect reflections may affect the measurements.
③Factors affecting the measurement range
The range of measurement will be affected by the brightness of the light and the reflective properties
of the target surface. When taking measurements outdoors or in intense sunlight, you can wear laser
recognition glasses (user-supplied) and use the laser aiming target (user-supplied) to identify the laser,
or you can also darken the target surface.
The better the bounce (scattering, non-specular reflection) of the laser on the target's surface, the
longer its range, which can be measured up to 100m. The range can also be increased if the laser's
brightness exceeds the brightness of surrounding environment (such as indoors, or at dusk). In poor
working conditions (for example, when making measurements in the hot sun), it is advisable to use the
laser aiming target (user-supplied).
④Accuracy check of distance measurement
You can check the accuracy of the distance measurement by the following methods:
Page.93.

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