The operational temperature ranges for the environmental thermal chambers are -70°C to 200°C. Spectralux laboratory has adopted IESNA LM-82-12 method of installing the unit under test in an environmental chamber.

The temperature monitoring points on the LED board (Tb) and on the case of the electronic driver (Td) are identified by the requestor. The unit under test (UUT) was evaluated via an automated heat and electrical data acquisition system fully automated.

During the test, thermocouple junction and the adjacent thermocouple conductor were held in good thermal contact with the surface of the material where a temperature is being measured. Good electrical contacts have been used to ensure the control of electrical parameters.