Designing arcade machines with minimal electromagnetic emissions (EMI) requires careful consideration of multiple engineering factors to ensure both optimal performance and regulatory compliance. The primary considerations begin with proper shielding of all electronic components. Metal enclosures and conductive coatings effectively contain electromagnetic interference, while specialized EMI gaskets around doors and access panels prevent leakage. The printed circuit board (PCB) layout plays a crucial role in emission control, requiring strategic component placement to minimize loop areas and separate analog and digital sections. Implementing multi-layer boards with dedicated power and ground planes significantly reduces EMI radiation.

Grounding strategies form another critical aspect, where a star grounding system prevents ground loops that can amplify emissions. All components should connect to a central ground point, and the entire cabinet must be properly grounded to the main power source. Careful selection of electronic components, particularly switching regulators and oscillators, can dramatically reduce emissions at the source. Choosing components with lower operating frequencies and slower rise times when possible helps minimize high-frequency noise generation.

Cable management and routing significantly impact EMI performance. Keeping power cables separated from signal cables, using twisted pair wiring for differential signals, and implementing ferrite beads on cables all contribute to emission reduction. Proper filtering on all input and output connections, including power inputs and video outputs, prevents both ingress and egress of electromagnetic interference.

Finally, comprehensive testing throughout the development process ensures compliance with international EMC standards. Pre-compliance testing during prototyping identifies potential issues early, while final verification testing confirms that the arcade machine meets all regulatory requirements for electromagnetic compatibility in various markets. These considerations collectively enable the creation of entertaining arcade experiences that coexist harmoniously with other electronic devices without causing interference.