The 819-IG-1.5-800PS multifunctional integrating sphere provides multiple measurement capabilities in a single integrating sphere device: a) a precision InGaAs photodiode for calibrated 940-1640 nm average power measurement, b) a fast photodiode for pulse shape characterization on an oscilloscope and a built in SMA fiber adapter, and c) an SMA fiber optic adapter for easy connection to a spectrometer. The 819-IG-1.5-800PS has a small internal diameter of 1.5 inch (38 mm), to minimize the pulse stretching effect inherent to integrating spheres, giving it a time constant of 0.7 ns. Together with its fast silicon photodiode, the 819-IG-1.5-800PS provides a pulse rise time of 0.8 ns and a fall time of 5.0 ns.