JJF 1843-2020 in English

The document outlines the calibration procedures and technical requirements for devices used to measure specific absorption rate (SAR) in radio frequency electromagnetic fields. It provides detailed guidelines on the methods and conditions necessary to ensure the accuracy and reliability of SAR measurements. The content includes specifications for reference standards, calibration environments, and performance verification processes. It also describes the parameters that should be measured and the acceptable tolerances for measurement results. The document is intended to support the proper use and maintenance of SAR measurement instruments, ensuring consistency in measurement outcomes across different applications and settings. It covers various aspects of calibration, including equipment preparation, test procedures, data analysis, and reporting requirements. The information presented is essential for users involved in the calibration and validation of SAR measurement devices.