Inspect the shipping container for damage. If the shipping container is damaged, retain it until the contents of the shipment have been checked against the packing list checked for mechanical and electrical operation. If the contents should need to be returned, see Instrument Care and Preventive Maintenance. Calibration and Verification

The power sensors and Power Masters comes fully calibrated from the factory and there are user-serviceable parts inside. Anritsu recommends annual calibration and performance verification by local Anritsu service centers. Accredited calibration to ISO17025 and ANSI/NCSL Z540-1 are available and can include a calibration certificate, test report, and uncertainty data.