The SLR system of the TIGO Geodetic Observatory has as its purpose to take satellitebased measurements using a laser system. This laser system is implemented with high-tech equipment that makes it very stable and very precise. Nevertheless, as consequence of its transmission characteristics, the system needs to be blocked during periods of no transmission, and to perform this task we designed a Rotating Shutter. The Rotating Shutter System was designed to synchronize the pulses that are being transmitted through a disc with apertures (through which the laser light travels) in order to eliminate noises that are produced between the transmission and the receiving system. © OSA / LAOP 2010.