Question: In a Base Station (BS) conformance testing for TDD with 1.28 Mcps, what is the primary purpose of transmitting sequences of "Decrease Tx power" and "Increase Tx power" TPC commands to the BS?
Option 1: To measure the round-trip time of the power control loop in a live network scenario.
Option 2: To determine the power control dynamic range by measuring the difference between maximum and minimum code domain power of the active DPCH.
Option 3: To test the BS's ability to switch between different transmission bandwidths.
Option 4: To evaluate the impact of power control on handover decisions in a multi-cell environment.
Explanation: The correct answer, Option 2, reflects the actual purpose of these steps as outlined in the context. By sending "Decrease Tx power" and then "Increase Tx power" TPC commands, the test measures how the BS adjusts its transmission power, ultimately determining the range (dynamic range) over which this power can be controlled. This is crucial for ensuring the BS can effectively manage its power output to maintain optimal network performance while minimizing interference. The other options are incorrect because they describe scenarios unrelated to the primary goal of these specific test steps.