Meaning
Modular radio transmitters are frequently integrated into larger electronic systems that must meet electromagnetic emission limits. Ensuring host device emc compliance requires evaluating the entire assembly for unintended radiated emissions. The integration of a pre-certified radio does not exempt the final product from regional interference standards.
This evaluation ensures that the completed system operates safely.
Testing Phase
System integrators must mount the pre-certified module in the physical housing and run emissions scans on the complete system. In this integration phase, host device emc compliance testing must be conducted with the radio active and transmitting. Engineers search for mixing products and harmonics generated by the combination of the module and the host board.
This ensures that the system does not interfere with other equipment.
Radiated Emission
Anomalous emissions can arise from poor routing of high-speed lines or inadequate shielding of the host housing. In many cases, achieving host device emc compliance involves adding shielding cans or ferrite beads to the host board. These modifications must be documented.
Certificate Strategy
Test reports must be added to the technical construction file to prove that the combined product is compliant. The host device emc compliance documentation allows the manufacturer to apply the required regulatory mark. This file is crucial for legal sales.
