Question: In a multi-band capable Base Station (BS) setup, how should the non-tested antenna connector be handled during single-band or multi-band testing, as per 3GPP specifications?
Option 1: Left open to allow for external monitoring
Option 2: Terminated to prevent interference
Option 3: Connected to a secondary test equipment
Option 4: Powered down but not physically disconnected
Explanation: In a multi-band capable BS with separate antenna connectors, terminating the non-tested antenna connector during single-band or multi-band tests is crucial. This approach prevents potential interference from or to the non-active band, ensuring the accuracy and reliability of the test results for the band under test. Termination in this context typically involves connecting the antenna connector to a load that matches the characteristic impedance of the system, effectively absorbing any signals that might otherwise be emitted or received.