﻿#DO - Dimming characteristic

This parameter page contains parameters for configuring the dimming characteristic of the dimming output.

The human eye is adapted to natural daylight. As a result, it works in a very wide range of brightness from twilight in the early morning and late evening to bright daylight at noon. In the lower brightness area the eye is clearly more sensitive than in the upper area. 

When dimming simple lamps, the electrical power is uniformly converted into a luminous flux that is emitted into the surrounding room. This luminous flux results in illuminance that can be measured with a luxmeter. When the lamp emits 50% of its maximum luminous flux, it already appears to the eye as intense brightness. When the luminous flux of the lamp rises to 75 %, the illuminance increases to the same extent. However, the eye perceives this change much weaker.

When different current lamp types are dimmed, luminous flux and subjective perceptions of brightness can vary considerably. For this reason, the dimming actuator offers several options for adjusting the dimming characteristics as required.

*If the lighting is regularly controlled via percentage presetting of the dimming value (0...100%), the suitability of the dimming characteristic in the value range should be checked as a priority.

*If the lighting is dimmed manually via the 4-bit object, the dimming characteristic can be adjusted in the time domain.
