System and method of testing high brightness LED (HBLED)

A system of Controlled Energy Testing of a Device Under Test (DUT) with precise timing of input energy to the DUT and coordinated measurement of output energy and spectral power distribution after thermal equilibrium of the DUT is attained, comprising:

• a plurality of processors that are implemented under a shared system clock to maintain a shared time reference, such that the processors can be independently programmed yet maintaining coordination with each other;
• the plurality of processors include an inner control loop for providing an analog feedback loop used to implement a constant voltage;
• the plurality of processors include an outer control loop for providing a digital feedback loop that implements a constant power output;
• the plurality of processors include a control processor for managing execution of DUT test sequence, wherein the control processor synchronizes start and end of acquisition of the output energy of the DUT by sending precisely timed signals to an acquisition device;
• and
• wherein the inner control loop comprises a Voltage Sense Processor, a Current Sense Processor, a first A/D converter, a Current Sensor, and a second A/D converter.