Advantech ADAM-5550KW Series, User Manual

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Appendix B Grounding Reference
ADAM-5510KW Series User’s Manual B- 17
B.3 Noise Reduction Techniques
• Isolate noise sources in shielded enclosures.
• Place sensitive equipment in shielded enclosure and away
from computer equipment.
• Use separate grounds between noise sources and signals.
• Keep ground/signal leads as short as possible.
• Use Twisted and Shielded signal leads.
• Ground shields on one end ONLY while the reference
grounds are not the same.
• Check for stability in communication lines.
• Add another Grounding Bar if necessary.
• The diameter of power cable must be over 2.0 mm
2
.
• Independent grounding is needed for A/I, A/O, and
communication network while using a jumper box.
• Use noise reduction filters if necessary. (TVS, etc)
• You can also refer to FIPS 94 Standard. FIPS 94
recommends that the computer system should be placed
closer to its power source to eliminate load-induced common
mode noise.
Figure B-15: Noise Reduction Techniques