The Pluto system serves as a comprehensive solution for Active Phased Array Antenna Calibration & Test, providing antenna phase calibration and a maximum scanning angle of 60 degrees TX/RX tests for each polarization. The system has undergone thorough cross-validation with R&S ATS 1800 CATR. It consists of a shielding chamber, the capacity to accommodate up to 9 horn antennas, an up-down converter, proprietary test software, (a non-signaling tester, and a VNA). Pluto offers a robust and versatile setup that has greatly enhanced and ensured the performance of Aethertek’s beamforming antenna modules during production.