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Instrumentation Reference Book, 4th Edition by Walt Boyes

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45.4. Interfaces, filtering, and shielding

45.4.1. Cables and Connectors

The most important sources of radiation from a system, or of coupling into a system, are the external cables. Due to their length these are more efficient at interacting with the electromagnetic environment than enclosures, PCBs, or other mechanical structures. Cables, and the connectors which form the interface to the equipment, must be carefully specified. The main purpose of this 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.
In many cases you will have to use ...

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