Which EMC (electromagnetic compatibility) components are helpful for the design and modification of coagulation analyzers?

Coagulation analyzers require time-sequential isolation between detection and operation for EMC (Electromagnetic Compatibility) purposes. During the "reading" moment of optical detection or during magnetic bead detection, the system should suspend other unnecessary motor and electromagnet actions. The stepper motor drivers for the sampling needle and reagent pump should be properly filtered, and the motor housing should be grounded. A freewheeling diode and a varistor (e.g., SMDJ series) must be connected in parallel across the electromagnet coil to absorb reverse peaks. The signal conditioning circuitry of the photodetector or magnetic bead induction coil should be kept away from power lines and properly shielded. The instrument software must have robust anti-interference filtering algorithms to process the acquired data.