The 94042A Class ABA Solar Simulator takes solar simulation to the next level. Certified to IEC 904-9 , JIS C 8912, and ASTM E 927-05 standards, this 4 x 4 inch, 450 Watt, source uses a xenon lamp and proprietary filter to meet Class A performance parameters without compromising the 1 sun output power. The illuminator housing provides a safe enclosure for the lamp. It is equipped with safety interlock systems. An integral fan and filter blower provides forced air-cooling to maintain optimal lamp, optics and housing temperature. It includes an upgraded shutter for production-environment operation. The newly designed shutter for the Class A systems is a rugged, single-blade shutter designed for 1 million cycles. Real-world performance has exceeded 10 million cycles. The shutter has a minimum exposure time of 200 ms and can be controlled via a contact closure or logic level input, or a convenient push-button switch on the illuminator housing. The lamp is an ozone-free xenon short arc lamp. We certify each source with the supplied lamp. For continuous production environments, we recommend purchasing replacement lamps when the source is purchased, and certifying each lamp. This will ensure Class A certification as lamps are replaced. Our 1.5G Air Mass Filter retains its optical properties through the life of the lamp. Replacement filters are sold separately. The highly regulated power supply provides constant electrical power to the xenon lamp. Lamp usage can be monitored in accumulated hours from the power supply. It is important to replace the lamp at the end of its rated life to maintain the minimum 1 sun output.