What type of calibration is referred to if a significant discrepancy in performance shows?

The term "exhaustive calibration" refers to a comprehensive and thorough process of calibration that is typically conducted in response to significant discrepancies in performance. This type of calibration ensures that all aspects of the equipment or device are meticulously checked and adjusted as necessary to meet the required performance standards.

When a significant discrepancy is detected, it may indicate serious issues with the functionality or accuracy of the equipment, making a routine or initial calibration insufficient. Exhaustive calibration involves detailed testing of each component and functionality to identify the root cause of the performance issue. This may include testing under various conditions, making necessary adjustments, and verifying that all measurements and outputs align with expected standards.

While routine calibration focuses on regular checks to maintain accuracy during expected performance, and initial calibration is performed when a device is first put into use, neither approach captures the corrective and comprehensive nature required when significant discrepancies are evident. Trial calibration typically refers to testing procedures performed during an initial phase to establish performance baselines, rather than addressing existing discrepancies.