LRS-9434 Temperature Set Point Accuracy
Given the delicate relationship between the output of laser diodes and temperature, the success of any burn-in or life test is contingent on the test system’s ability to accurately and uniformly control device temperature. The LRS-9434 Test System utilizes a family of fixtures that are designed to ensure set point accuracy of ± 2.0°C across a range of 40°C to 150°C. Temperature set point accuracy is defined as the difference between temperature set point and actual temperature measured on the fixture heater plate adjacent to any device location. Temperature set point accuracy takes into account both accuracy of temperature control and uniformity across all device locations. Temperature control is accomplished through the use of AD590 temperature sensors, and a combination of cartridge heating and regulated air cooling. Temperature set point accuracy is optimized through fixture geometry and an advanced temperature control algorithm.