Which EMC (electromagnetic compatibility) devices are helpful for the design and modification of ophthalmic OCT (Optical Characteristic Telescope) devices?

Improving OCT's anti-interference capabilities requires a multi-pronged approach. The DC-DC power input of the laser module should use a common-mode inductor (CMZ series) and a TVS diode to suppress mains noise and transients. When the weak current signal output by the photodetector is converted to voltage, the feedback resistor and capacitor of its transimpedance amplifier (TIA) must be carefully selected to limit bandwidth and suppress noise. The entire analog signal chain circuit board should be partitioned, separating digital and analog grounds. The device casing should be metal, and all external interfaces (e.g., HDMI display output) must use low-capacitance ESD protection devices (e.g., ESDULC5V0D9B) to prevent external interference coupling and ensure video signal quality.