Question: In a multi-band capable Base Station (BS) conformance testing for TDD, what is required for the antenna connector not being tested during a single-band or multi-band test with separate antenna connectors?
Option 1: It must be connected to an external RF signal generator.
Option 2: It should be left open without any termination.
Option 3: It shall be terminated.
Option 4: It needs to be disconnected from the BS entirely.
Explanation: In the context of ensuring accurate and reliable test results for a multi-band capable Base Station, especially when testing involves separate antenna connectors for different bands, terminating the non-tested antenna connector is crucial. This termination prevents potential interference or signal reflections that could skew the test outcomes for the band under test. Thus, proper termination of unused ports is a standard practice in RF testing to maintain signal integrity and ensure the validity of the measurements being taken.