At the beginning of 2015, around 1200 satellites were fully operational in orbit around the planet, half of which were communication satellites. This number of satellites is expected to expand at a progressive rate within the next years. In order ensure proper performance in the satellite transponders in the payload, on-orbit measurements must be made as a part of maintenance. This application note focuses on satellite post-launch or on-orbit measurements, and monitoring strategies used for satellite functionality checks when running maintenance routines. Download the full paper for more information regarding this theory’s background, as well as its testing and monitoring procedures.