2-3
Section2 Conformance with CE marking
2-2-2 How to lay the SX bus cable
<Mounting the ferrite core>
A high-speed electric signal flows through the SX bus cable. Therefore, high-frequency noise is emitted
from the SX bus cable, making it impossible for the product to conform to the EMC directive concerning CE
marking.
To solve this problem, a ferrite core is mounted at the base of the SX bus cable.
Mount the ferrite core according to the figure below.
<How to affix the cable to the metal enclosure>
When affixing the SX bus cable to the metal enclosure, be sure to secure a 1-cm or wider gap so that the
SX bus cable does not come into contact with the metal plate.
On the one hand, the metal enclosure provides an effective shield fromelectromagnetic radiation noise; on
the other hand, it becomes an effective antenna that electromagnetic radiation noise if a cable as a noise
source is nearby or comes into actual contact with it. Not only the SX bus cable, but also other high-speed
signal transmission cables need to be kept away from the metal walls of the enclosure.
Commendable ferrite core
: ZCAT 3035-1330 from TDK
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