Isro on Sunday said that the Chandrayaan-3 lander successfully underwent EMI/EMC (Electro - Magnetic Interference/ Electro-Magnetic Compatibility) test between January 31 and February 2. The test, it said: "Is conducted for satellite missions to ensure the functionality of the satellite subsystems in the space environment and their compatibility with the expected electromagnetic levels. This test is a major milestone in the realisation of the satellites."