SSM5000A series switch matrix can expand the number of test ports of network analyzer, signal source, spectrum analyzer and other equipment. And the series are with up to 4 input ports and up to 24 output ports, supporting USB, LAN, Direct Control communication modes. The Direct Control interface on the switch matrix can further expand the number of test ports and support a simplified multi-port calibration algorithm, which can greatly improve the efficiency of calibration. In addition to SIGLENT instruments, it also supports other mainstream instruments. It is suitable for 19-inch standard chassis and can be widely used in multi-port test environments such as antennas and 5G component modules.