Cable shield grounding guidelines.
Cable shield grounding guidelines.
(OP)
Is there standards/guidelines published for grounding the shield when using shielded cable for EMI? I have heard arguments to ground at one end only; others say to ground both ends and use capacitor to combat ground loop problems; still others say use resistor instead. Which is correct/best method? Is it based upon the signal frequency? I realize that much depends upon the application but some rule-of-thumb guidelines based upon time proven testing/experience would make for easier design decisions.
David Baird
dbaird@gemcity.com
EET degree.
Journeyman Electrician.





RE: Cable shield grounding guidelines.
RE: Cable shield grounding guidelines.
RE: Cable shield grounding guidelines.
Hewlett Packard and other companies have published some very good application notes about the grounding of shields. If you have a really critical application, research that literature to find descriptions of situations which most closely match your own. Then make your choice.
If you're interested, e-mail me at ambertec@ieee.org and I can send you a sketch which argues for grounding at the source end only for a case where the "grounds" at the source and load ends are separated by a substantial inter-ground noise voltage.