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The middle image changes to illustrate the combined settings. These settings determine the
parameters that are available for the light source. See
Defining Parameters for Lighting Fixtures
on page 1182.
6
Click OK.
The outline shape for the light source may change in the drawing area, depending on the selected
light source definition settings.
7
Save changes to the lighting fixture family.
Defining Parameters for Lighting Fixtures and Light Sources
The parameters that you can define for a lighting fixture and its light source vary, depending on the light
source definition settings that you specify. (See
Defining the Geometry of a Light Source
on page 1180.)
NOTE
In addition to defining these parameters for a lighting fixture family in the Family Editor, you can also
change many of them for an instance or type of lighting fixture in a project. See
Changing a Lighting Fixture in
on page 1192.
To define parameters for a lighting fixture and its light source
1
Create a lighting fixture family, or open a lighting fixture family for editing.
See
Creating a Lighting Fixture with One Light Source
on page 1169 or
on page 1179.
2
Click Family Properties panel
➤
Types.
3
In the Family Types dialog, for Name, select the family type to modify.
You can define different parameter values for different family types. For more information, see
on page 418.
4
Define parameters as desired.
See
Parameters for Lighting Fixtures and Light Sources
on page 1182.
5
Click Apply.
6
(Optional) Repeat this process for other family types defined for the lighting fixture family: For
Name, select another family type. Define its parameters. Click Apply.
7
Click OK.
8
Save changes to the lighting fixture family.
Parameters for Lighting Fixtures and Light Sources
You can change parameters for lighting fixtures and their light sources when defining a lighting fixture in
the Family Editor, or when modifying a lighting fixture in a building model. (See
Changing a Lighting Fixture in a Building Model
on page 1192.)
Description
Parameter
Electrical - Lighting
A value used by Revit MEP to indicate that the Coefficient of Utilization
will be calculated for the lighting fixture by default. In a project, you
can change this default behavior by changing instance properties.
Calculate Coefficient of Utilization (default)
A value used by Revit MEP to define the efficiency of a lighting fixture
in transferring luminous energy to the work plane in a particular area.
Coefficient of Utilization (default)
1182 | Chapter 19 Rendering
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