L-DALI User Manual
167
LOYTEC
Version 5.2
LOYTEC electronics GmbH
3.
Select an unused index.
4.
Click on the
Calibrate
button.
5.
If necessary repeat steps 1.– 4. For different daylight illumination levels.
6.
Press the
Done
button.
The current gain table can be uploaded from the device by pressing the Upload button. It
can be cleared with the Clear button.
7.6.3 Calibrate Constant Light Controller
To calibrate the constant light controller click on the
Calibrate Constant Light Controller
…
button. The dialog shown in Figure 157 is opened.
Artificial light calibration
Artificial light calibration is required if
1.
the artificial light in the controlled area/room is dimensioned outside the range of 500lx
to 700lx. In a typical office room artificial light is dimensioned for around 600lx (500lx
+ 20%). If in the rooms artificial light is dimensioned dimmer or brighter the artificial
light factor is used to parameterize the amount of lux provided by the rooms artificial
light.
2.
the difference in sensor sensibility for artificial light vs. for natural light must be
considered. While the natural light comes through the window, the artificial light is
provided by luminaires mounted on the ceiling. Thus, the reflection and light
distribution is different depending on the light source. This results in a different ratio of
the lux level measured by the sensors mounted on the ceiling to the lux level on the
reference area (e.g. desk). In most use cases this difference is negligible. However, if it
is not the artificial light factor is used to parameterize this influence.
Figure 157: Calibrate Constant Light Controller.
To measure the amount of light provided by the rooms artificial light the following steps
have to be performed:
1.
If possible darken the room.
