Question: When performing gain calibration for UE/MS OTA antenna testing, how should the influence of the calibration antenna feed cable be addressed?
Option 1: By assuming its impact is negligible due to data averaging, similar to efficiency calibration.
Option 2: Through theoretical calculations based on the cable's specifications without additional measurements.
Option 3: By repeating the gain calibration measurement with a differing routing of the feed cable and accounting for the largest difference in the uncertainty budget.
Option 4: Ignoring its influence as it is not significant in practical scenarios.
Explanation: This option correctly reflects the requirement to assess the influence of the calibration antenna feed cable through measurements when performing gain calibration. By repeating the measurement with a differing cable routing and accounting for the largest difference, the uncertainty budget accurately reflects potential variations, ensuring more reliable test outcomes in UE/MS OTA antenna performance conformance testing.