Chapter 13 Interfaces and filtering
Figure 11.1 on page 258 divided EMC control measures into three levels. This chapter deals with the secondary (interfaces and filtering) level. If your product has no interfaces – let’s say it is a hand-held, battery operated device – then you already have a head start when it comes to EMC since only the enclosure port is relevant to you. But for the rest of us, power, signal and data interfaces are a fact of life and they offer a ready route for disturbances into and out of a product. The first thing that gets connected to an interface is a cable, so we need to consider how cables couple these disturbances, and if they are to be screened, how the screen connection needs to be dealt with in practice; and then ...
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