Testing RF paths on DUT often involves switching many input-ports to many output-ports in a test setup and this easily becomes cumbersome as complexity between I/O port increases. Dow-Key Microwave’s bi-directional CB-Series offers a convenient way to test multiple I/O ports on a DUT without having to connect and discount it from the setup. The crossbar series routes any input signal to any output port such that the path between I/O ports is unique at any given time.