Which of the following is a major concern in the design of avionic systems related to EMI?

Electromagnetic compatibility (EMC) is crucial in the design of avionic systems because it ensures that the electronic components and systems can operate without interference from electromagnetic interference (EMI). This is particularly important in aviation, where a malfunction or erroneous signal can lead to safety hazards.

The design process must account for how various devices emit and respond to electromagnetic fields to prevent unwanted signals from corrupting data or causing functional issues in avionic systems. Strategies such as shielding, grounding, and filtering are employed to enhance EMC, making it a central focus during the development of avionic systems.

Other factors, while important in their own right, do not specifically address the issues related to EMI in the same direct manner. For instance, weight reduction is vital for overall aircraft performance, but it does not directly relate to managing electromagnetic fields. Antenna placement is significant for signal reception but is usually a part of the broader electromagnetic compatibility strategy. Thermal management focuses on the dissipation of heat within systems, which can impact reliability, but it does not inherently concern itself with electromagnetic interference.