BS EN 13477-2-2010 "nondestructive inspection acoustic emission. Equipment characteristics. Verification of operating characteristics", specifies the verification method of the operating characteristics of acoustic emission testing equipment. The standard specifies the verification process and requirements, covering the verification of key performance indicators such as equipment Sensitivity, Frequency Response, channel conformity, etc., to ensure the reliable performance and accurate data of acoustic emission testing equipment in nondestructive inspection. It provides technical specifications to ensure the validity and credibility of test results, and helps to standardize the mass control of acoustic emission testing equipment.