Question: What is the maximum allowed frequency error at each antenna connector for radio transmission and reception measurements in FDD mode, considering both the base value and the additional tolerance?
Option 1: ±0.1 ppm (parts per million) with an additional fixed offset of 10 Hz
Option 2: ±10 Hz with an additional relative error of 0.01 ppm
Option 3: A fixed value of ±50 Hz without any ppm consideration
Option 4: ±1 ppm without any additional Hz tolerance
Explanation: This option correctly combines the two components of the frequency error limit as specified for radio transmission and reception measurements in FDD mode. The base relative error is set at ±0.1 ppm, which accounts for proportional deviations across the frequency range, while the additional fixed offset of ±10 Hz covers absolute errors that are not dependent on the frequency value. This dual approach ensures both precision (through ppm) and accuracy (with the Hz component) in measuring frequency errors at antenna connectors.