
Digital subtraction angiography (DSA) machines, as large-scale interventional radiology equipment, must strictly comply with GB 9706.1 and YY 0505 (domestic) and IEC 60601-1-2 (international) EMC standards. Its C-arm servo motor, high-frequency high-voltage X-ray generator, and high-speed digital image processing system are the main sources of interference and sensitivity. The standard requires the equipment to operate stably in environments with strong interference, such as those from nearby radiofrequency surgical equipment. To achieve compliance, the power lines of the motor driver must use common-mode inductors (e.g., CMZ7060A-701T) for filtering, and the control signal lines of the high-voltage generator must be shielded and ESD-protected (e.g., ESD15VAPB). All video output interfaces (e.g., DVI/DP) should integrate ultra-low capacitance ESD devices (e.g., ESDLLC5V0D8BH) to ensure high-definition, noise-free images.