Question: In a multi-band capable Base Station (BS) conformance testing for TDD (Time Division Duplexing) as per 3GPP standards, what is required for the antenna connector NOT being tested when assessing a single band?
Option 1: The non-tested antenna connector should be left open-circuited.
Option 2: The non-tested antenna connector shall be terminated.
Option 3: The non-tested antenna connector must be connected to a dummy load of 50 ohms but only for the duration of the BER measurement.
Option 4: No specific action is mandated for the non-tested antenna connector in multi-band capable BS testing.
Explanation: In the context of ensuring accurate and reliable test results for a single band on a multi-band capable Base Station, terminating the antenna connector not under test is crucial. This practice prevents potential interference or signal bleed from the non-tested band, which could skew the Bit Error Rate (BER) measurements of the wanted signal at the BS receiver. Termination ensures a controlled test environment, adhering to rigorous testing standards for telecom equipment.