Each product in this section is designed to interface with our integrating spheres, light sources and detector assemblies, as well as, being stand-alone instruments for your development requirements. Included are: SC-5500 Integrating Sphere System Control - a versatile, microprocessor-based radiometer. DAS Series Diode Array Spectrometers - multichannel analyzers designed for real time spectral analysis. LPS Series Halogen Power Supplies - precision regulated DC constant current sources. VA Series Variable Attenuators - allow users to preciously vary the intensity of an external light sources entering an integrating sphere.