Chapter 6

Interfaces, filtering and shielding

Publisher Summary

This chapter provides an overview on interfaces, filtering, and shielding. Cables, and the connectors that form the interface to the equipment, must be carefully specified. The main purpose is to ensure that differential-mode signals are prevented from radiating from the cables, and that common-mode cable currents are neither impressed on the cable by the signal circuit nor are coupled into the signal circuit from external fields via the cable. The effectiveness of the filter configuration depends on the impedances seen at either end of the filter network. Shielding involves placing a conductive surface around the critical parts of the circuit so that the electromagnetic field ...

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