Assembled PCB EMC test methods

摘要

Most often, it is unclear where assembled PCBs are going to be used in and how these are being connected and applied. As such, it will be required, both for the OEM manufacturer as well as the end-user/system integrator, to know the EMC properties prior to system integration. EMC is, aside power integrity (PI) and signal integrity (SI), one of the crucial requirements to be met to ensure functional reliability of the end-product. The EMC requirements applicable need to be uncomplicated and easy to verify in a limited amount of test time. Last but not least, these EMC tests have to be applied in an environment which is close to the end-applications foreseen; rack-mounted, stand-alone, etc. The PCB test methods proposed cover the frequency range from (DC) several Hz to several GHz, both on RF emission and immunity. By exchanging the RF disturbance source by an impulse source, the test methods proposed can also be used with impulse immunity tests.