Thaum cov zaub tsim ib lub kaw-circuit saib xyuas, nws feem ntau yuav tsum tau ua kom muaj zog tsis tu ncua 24 teev hauv ib hnub, 365 hnub hauv ib xyoos, thiab daim ntawv thov ib puag ncig ntawm qee qhov kev qhia yuav hnyav, uas yuav tsum muaj kev ntseeg siab dua thiab ruaj khov ntawm cov zaub.
Piv nrog rau cov khoom lag luam, hais txog kev tsim, qhov tam sim no, kev siv hluav taws xob, qhov kub thiab txias, kev tiv thaiv hluav taws xob cuam tshuam, hluav taws xob muaj peev xwm poob siab thiab cov npoo, thiab lub sij hawm nruab nrab ntawm kev ua tsis tiav ntawm cov lus qhia yog ntau dua li cov kua siv lead ua zoo tib yam. Nyob rau tib lub sijhawm, cov khoom lag luam yuav tsum tau siv Lub plhaub tag nrho cov hlau thaiv kom ntseeg tau tias electromagnetic compatibility thiab cuam tshuam kev ua haujlwm; nyob rau hauv cov kev xaiv ntawm cov khoom, lub withstand voltage, tam sim no, kub, av noo thiab lwm yam yam ntxwv ntawm lub Cheebtsam siv nyob rau hauv cov zaub yog siab tshaj cov uas siv nyob rau hauv lub TV. Hauv cov txheej txheem ntawm kev teeb tsa, kev debugging, tshwj xeeb tshaj yog cov khoom siv thiab kev laus ntawm tag nrho lub tshuab, cov kev xav tau ntawm cov khoom lag luam kuj tseem siab dua. Kev laus ntawm tag nrho lub tshuab feem ntau yog kwv yees li 8 teev thaum cov kab sib dhos ua kom muaj zog ntawm chav tsev kub thaum lub sij hawm tsim cov kua siv lead ua zoo tib yam. Kev laus ntawm lub tshuab yuav tsum tau ua kom muaj zog thiab muaj hnub nyoog ntau dua 24 teev ntawm cov laus sib dhos kab hauv qhov chaw kaw nrog qhov kub thiab txias siab kom ntseeg tau tias kev ruaj ntseg ntawm tag nrho lub tshuab.
