Advantech ADAM-5000/TCP Series, Manual

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Appendix C
Grounding Reference
Figure C-10: Double isolated cable
• Double isolated cable Figure 10 is an example of a double
isolated cablC. The first isolating layer of spiraled aluminum foil covers
the conductors. The second isola- tion layer is several bare conductors
that spiral and cross over the first shield layer. This spiraled structure
makes an isolated layer for reducing external noisC.
Additionally, follow these tips just for your referencC.
• The shield of a cable cannot be used for signal ground. The shield
is designed for carrying noise, so the environment noise will couple
and interfere with your system when you use the shield as signal
ground.
• The higher the density of the shield - the better, especially for
commu- nication network.
• Use double isolated cable for communication network / AI / AO.
• Both sides of shields should be connected to their frame while
inside the devicC. (for EMI consideration)
• Don’t strip off too long of plastic cover for soldering.
C-12 ADAM-5000/TCP User’s Manual