Lub luag haujlwm ntawm cov hlau thaiv kev tiv thaiv yog cais tawm cov suab nrov ntawm electromagnetic teb los ntawm cov khoom siv rhiab thiab txiav tawm txoj kev nthuav tawm ntawm lub suab nrov. Shielding yog muab faib ua active shielding thiab passive shielding. Lub hom phiaj ntawm kev tiv thaiv kev ua haujlwm yog los tiv thaiv lub suab nrov los ntawm kev tawm mus rau sab nraud, uas yog kev tiv thaiv ntawm lub suab nrov; lub hom phiaj ntawm passive shielding yog los tiv thaiv cov cuab yeej rhiab los ntawm kev cuam tshuam los ntawm lub suab nrov, uas yog kev tiv thaiv ntawm cov khoom siv rhiab heev.
Lub shielding txheej ntawm shielded cable feem ntau yog ua los ntawm cov khoom tsis yog- cov khoom sib nqus xws li tooj liab thiab txhuas, thiab cov thickness yog nyias nyias, uas yog me dua li ntawm daim tawv nqaij qhov tob ntawm cov khoom siv hlau ntawm qhov zaus ntawm kev siv. Cov nyhuv ntawm cov txheej thaiv tsis yog tsuas yog vim qhov kev xav ntawm cov hluav taws xob thiab cov hlau nplaum los ntawm lub cev hlau nws tus kheej. , absorption, tab sis vim yog grounding ntawm shielding txheej. Cov ntawv sib txawv hauv av yuav cuam tshuam ncaj qha rau cov nyhuv thaiv. Cov txheej txheem hauv av ntawm cov hluav taws xob thiab cov hlau nplaum thaiv cov txheej txheem sib txawv. Ungrounded, ib leeg-tau kawg lossis ob npaug- xaus.
