What might indicate a calibration error in medical equipment?

Inaccurate measurements serve as a strong indicator of a calibration error in medical equipment. Calibration is the process of adjusting the precision and accuracy of equipment to ensure that it provides correct readings and functions as intended. When measurements are inaccurate, it suggests that the equipment may not be properly calibrated, leading to erroneous data which can compromise patient safety and diagnostic effectiveness. Ensuring that medical devices provide accurate measurements is crucial, as these readings are often used to make critical decisions in patient care.

The other options, while they may indicate various issues with medical equipment, do not directly reflect on the calibration accuracy in the same way that inaccurate measurements do. Excessive noise could suggest a mechanical issue or interference, an inconsistent power supply might indicate electrical problems, and overheating components could result from electrical or operational factors, but none specifically point to a calibration error.