Abstract: An interface for a solar tracking system is disclosed. The interface can couple a bearing housing assembly to a foundation member and can include a pivot plate and a pair of brackets. The pivot plate can include a top panel configured to receive the bearing housing assembly and a pair of edge panels extending from lateral edges of the top panel. Each bracket can include a central panel, a mounting projection extending from a longitudinal end of the central panel, and a pair of foundation plates extending from lateral edges of the central panel. The mounting projection can be attached to a corresponding edge panel of the pivot plate. The pair of foundation plates can receive the foundation member therebetween. One foundation plate can include an alignment lip and the other foundation plate can include a planar edge.

Abstract: A method of operating a lighting device system. The method comprising the steps of defining a first power signature for a first light fixture based on a first resulting voltage and a first target current of the first light fixture, measuring a second power signature of a second light fixture, comparing the second power signature of the second light fixture to the first power signature of the first light fixture; and determining whether the first light fixture experienced an undesired operating state if the second power signature of the first light fixture deviates from the first power signature of the first light fixture. In one arrangement, the first light fixture is substantially equivalent to the second light fixture.