Electromagnetic compatibility (EMC) It is a discipline of electrical and electronic engineering and is meant to ensure that multiple interconnected operating equipment near and still function properly without disturbing each other.
To ensure compatibility between two devices should be adhered to two basic requirements:
- the equipment must not emit too much disturbance,
- the equipment must not be too sensitive to disturbances.
Electromagnetic compatibility, In addition to perturbations from electrical and electronic equipment, considers two other important sources of interference:
- voltage pulses generated by meteorological phenomena and lightning,
- electrostatic discharges coming mainly from the contact of man with the equipment.
Generally the transmission of electromagnetic fields follows two possible routes:
- the path led,
- the path radiated.
The disturbance is transmitted radiated when propagating in free space, While it transmits conducted when running along the equipment interconnecting cables.
Although starting from relatively simple principles, follow techniques to different criteria depending on the product to be tested, and in individual cases, specific instrumentation and test environments are required.