Effectiveness Test Data Magnetic (H-Field)
Loop area minimization lowers a system’s susceptibility to electromagnetic fields and reduces potential emissions of electromagnetic energy. When referring to the test data chart, note that the smaller the loop area number, the better your results.
Vermillion engaged D.L.S. Electronic Systems, Inc., Glenview, Illinois, to run tests on various shielding configurations to determine the Magnetic Shield Effectiveness, expressed as “Effective Loop Area”, of these different designs.
The Test Frequency Range was 300 Hz – 100 kHz.
|Average Effective Loop Area|
|Twisted pair with Vermalloy® 622 braided shield, clear mylar wrap, tinned copper braided shield, and a heat shrink jacket. Shielding was 95% coverage.||.0009|
|Twisted pair with Vermalloy® 622 braided shield (95% coverage) and heat shrink jacket.||.0022|
|Twisted pair with Vermalloy® 3948 braided shield (95% coverage) and heat shrink jacket.||.0035|
|Twisted pair with copper mylar wrap, tinned copper braided shield, drain wire, tinned copper braided shield and heat shrink jacket. Braided shielding was 95% coverage.||.0233|