Question: For a Base Station (BS) with separate RX and TX antenna ports operating in Frequency Division Duplexing (FDD) mode, how should the spurious emissions test be performed?
Option 1: With only the RX port active and the TX port disabled.
Option 2: With both TX and RX ports on, but without any termination on the TX port.
Option 3: With both TX and RX ports on, and the TX port terminated.
Option 4: By alternating between TX and RX operations to simulate real-world conditions.
Explanation: This is because, according to the specifications for FDD BS with separate RX and TX antenna ports, the test for spurious emissions should be conducted under conditions that mimic operational scenarios as closely as possible. By having both the TX and RX on (to account for potential interactions) and terminating the TX port (to prevent external interference and ensure measurement accuracy of receiver spurious emissions), the test setup accurately reflects the base station's operational state, thus providing a reliable assessment of its spurious emissions performance.