What are the domestic and international EMC (electromagnetic compatibility) standards for digital X-ray machines?

Digital X-ray machines must meet stringent EMC standards to ensure imaging stability and avoid interference with other equipment. Domestic standards mainly follow GB 9706.1 series (General requirements for basic safety and performance of medical electrical equipment) and YY 0505 (Electromagnetic compatibility requirements for medical electrical equipment), whose testing items cover radiated emissions, conducted emissions, electrostatic discharge, surges, and conducted interference induced by radio frequency fields. The mainstream international standard is IEC 60601-1-2. To ensure equipment certification, the power supply typically requires surge and overvoltage protection using devices such as SMDJ series TVS diodes (e.g., SMDJ24CA) and 2R600L series gas discharge tubes. Signal and control ports can use electrostatic discharge protection devices such as ESDLC5V0D3B to suppress high-frequency noise and electrostatic pulses, improving the overall immunity of the machine from both conducted and radiated sources.