Final answer:
Test measurement and diagnostic equipment must be fully calibrated prior to deployment and marked accordingly on the TMDE master listing to ensure accuracy and reliability.
Step-by-step explanation:
Prior to deployment, test measurement and diagnostic equipment (TMDE) should be fully calibrated to ensure accurate readings and reliable performance during use. Calibration should be performed according to precise standards to maintain the integrity of measurement results. Once calibration is completed, the equipment should be clearly marked as calibrated on the TMDE master listing. This list serves as an official record indicating the status and calibration dates of equipment, guaranteeing that only properly calibrated instruments are used, which is crucial to maintain the quality and safety of operations. The listing is a vital element of the quality control process and assists in the management and scheduling of future calibrations.