Which factor is important for assessing the performance of a phased array system?

The calibration method used during inspections is a critical factor for assessing the performance of a phased array system because it directly impacts the accuracy and reliability of the inspection results. Proper calibration ensures that the system is aligned correctly and that the signals generated by the probe accurately reflect the conditions being inspected.

Calibration involves adjusting the system settings to account for variables such as probe characteristics, material properties, and environmental conditions. By doing so, it helps in achieving consistent and repeatable measurements, which are essential for evaluating performance over time and under varying conditions. Without proper calibration, any inspection results would be questionable, potentially leading to false positives or negatives.

Additionally, while other factors like physical dimensions of probe elements, display technology, and maximum allowable depths contribute to overall system performance and usability, they do not have the same direct and crucial influence on the accuracy of the inspection results as the calibration method does. Calibration serves as the foundation that ensures the reliability of the system's outputs, making it an essential aspect of the performance assessment of a phased array system.