A system and method for configuring a node in a graphical program by programmatically generating graphical source code associated with the node. The performance measurement packet is forwarded from the source to a subset of one or more identified receivers over the same respective paths as non-measurement packets. The ballast starts the lamp and selectively outputs an operating power and a blanking power to the lamp. An LED light bulb has a positive pin and a negative pin inserted inside the guiding channel, respectively, and being electrically connected to the wire sets. A second stage uses a detailed gradient distribution analysis that only operates on voxels that pass a threshold of the first stage. A microprocessor manages power input to, within, and output from the system.