So I have generated an industrial turret light fixture which allows the user to define the suspension length from the ceiling; the issue that I am having is that there doesn't appear to be a way that the light source definition can be pinned to a reference plane of the light fixture and does it really matter? When the suspension length is altered, the light source definition does not travel with the fixture. I did define the two lamps as the light source, but I am not sure whether or not REVIT uses the actual location of that light source or the light source definition to do the actual lumen method calculation.
Does anybody have any experience with this?