3C daim ntawv pov thawj yuav tsum muaj rau electromagnetic compatibility (EMC) feem ntau tsom rau electromagnetic cuam tshuam (EMI) yam ntxwv, yam tsis tau qhia meej meej electromagnetic cuam tshuam kev tiv thaiv kab mob (EMS) muaj peev xwm. Cov khoom kuaj tshwj xeeb sib txawv nyob ntawm seb hom khoom siv. Cov hauv qab no yog cov lus piav qhia ntxaws:
Cov ntsiab lus tseem ceeb ntawm Electromagnetic Compatibility Requirements
EMI (Electromagnetic Interference Characteristics) Yuav tsum muaj: 3C daim ntawv pov thawj tam sim no tsuas yog qhia cov kev cai rau cov khoom siv electromagnetic cuam tshuam. Qhov no txhais tau hais tias qhov cuam tshuam ntawm electromagnetic cuam tshuam los ntawm cov cuab yeej siv thaum lub sijhawm ua haujlwm yuav tsum ua kom tau raws li cov qauv kev txwv kom tsis txhob muaj kev cuam tshuam rau ib puag ncig lossis lwm yam khoom siv. Piv txwv li, suab- cov khoom siv pom kev thiab cov khoom siv thev naus laus zis yuav tsum ua kom tau raws li cov kev txwv ntawm kev cuam tshuam hluav taws xob, hluav taws xob cuam tshuam lub zog, thiab kev sib haum xeeb tam sim no nyob rau hauv ib qho tshwj xeeb zaus.
EMS (Electromagnetic Interference Immunity) Yuav Tsum Tau: Cov qauv ntawv pov thawj 3C tam sim no tsis xav kom muaj peev xwm tiv thaiv electromagnetic cuam tshuam. Qhov no txhais tau hais tias kev ua haujlwm ruaj khov ntawm cov khoom siv nyob rau hauv kev cuam tshuam sab nraud ntawm electromagnetic tsis suav nrog tam sim no nyob rau hauv qhov kev ntsuam xyuas.
EMC Standards and Testing Items for Audio-Visual Equipment
Siv tau Standard:
GB/T 13837-2012: Qhia meej txog cov kev txwv thiab kev ntsuas rau xov tooj cua cuam tshuam cov yam ntxwv ntawm lub suab thiab TV tshaj tawm xov xwm thiab cov cuab yeej muaj feem xyuam.
GB 17625.1-2012: Qhia meej cov kev txwv tsis pub muaj kev sib haum xeeb tam sim no (cov tswv yim tam sim no ib theem Tsawg dua lossis sib npaug rau 16A rau cov khoom siv).
Cov khoom xeem:
LCD TVs: cuam tshuam qhov hluav taws xob, hluav taws xob cuam tshuam lub zog, thiab kev sib haum xeeb tam sim no yuav tsum tau sim. Yog tias cov khoom lag luam muaj ntau yam haujlwm (xws li TVs ntse), cov kev ntsuas ntsuas rau cov khoom siv thev naus laus zis yuav tsum raug txiav txim siab.
Lwm lub suab- cov khoom siv pom pom: xws li tuners, xov tooj cua, suab- cov khoom kaw cia / playback, thiab lwm yam, yuav tsum raug kuaj raws li txhua yam khoom siv tau teev tseg hauv tus qauv kom paub meej tias cov yam ntxwv cuam tshuam ntawm electromagnetic cuam tshuam raws li qhov txwv.
EMC cov qauv thiab cov khoom xeem rau cov khoom siv Technology
Cov qauv siv tau:
GB/T 9254-2008: Qhia meej txog kev txwv xov tooj cua cuam tshuam thiab ntsuas txoj hauv kev rau cov khoom siv thev naus laus zis.
GB 17625.1-2012: Ib yam li cov cuab yeej siv suab pom, qhia txog kev txwv tsis pub muaj kev sib haum xeeb tam sim no.
Cov khoom xeem:
Peb qhov kev xeem tseem ceeb:
Kev cuam tshuam voltage: kuaj ntau zaus 0.15MHz-30MHz.
Radiated cuam tshuam lub zog: Kev ntsuas zaus ntau 30MHz-1000MHz. Harmonic tam sim no: Harmonic emission txwv thaum lub tswv yim tam sim no ib theem ntawm cov khoom siv ntsuas tsawg dua lossis sib npaug rau 16A.
Kev cuam tshuam ntawm Cov Khoom Tseem Ceeb ntawm Electromagnetic Compatibility (EMC)
Kev ua haujlwm ntawm cov khoom hauv qab no ncaj qha cuam tshuam rau EMC ntawm cov khoom siv thiab yuav tsum tau ua tib zoo saib xyuas thaum tsim thiab tsim khoom:
Tuners, Oscillators: Tej zaum yuav ua kom muaj suab nrov heev -; Kev cuam tshuam yuav tsum raug txwv los ntawm kev tiv thaiv los yog lim tsim.
Hloov Cov Khoom Siv Hluav Taws Xob (Switching Transistors, Transformers, Rectifier Diodes): Hloov cov haujlwm yooj yim tsim kom muaj kev sib haum xeeb thiab EMC; Circuit Court tsim xav tau kev ua kom zoo los yog ntxiv cov lim dej.
Cov Khoom Siv Hluav Taws Xob Cov Hluav Taws Xob, Cov Hluav Taws Xob cuam tshuam: Siv los txo cov pa phem rau hauv daim phiaj hluav taws xob thiab kev cuam tshuam sab nraud.
RF Modulators, Fais Amplifiers: Radiated cuam tshuam yuav tsum tau tswj nyob rau hauv siab - zaus teeb liab ua theem.
Fais fab Cables nrog Ferrite Rings, I / O Cards, HDMI Cables: Electromagnetic to yuav tsum tau txo los ntawm ferrite rings los yog shielding tsim.
Crystal Oscillators, Servo Motors, Transformers: Lawv cov yam ntxwv electromagnetic yuav tsum tau ua kom tsis txhob dhau los ua qhov cuam tshuam.
Kov Chips: Lawv tus kheej lub suab yuav tsum raug txwv kom tsis txhob cuam tshuam nrog cov teeb liab kov.
3C Certification Catalog Scope thiab Inquiry Method
Kev faib tawm Catalog: Cov ntawv pov thawj 3C tau muab faib ua 11 pawg loj, suav nrog cov xov hlau thiab cables, cov khoom siv hauv tsev, cov khoom siv hluav taws xob thiab cov khoom siv kev nyab xeeb, khoom siv teeb pom kev zoo, tsheb thiab khoom siv kev nyab xeeb, thiab lwm yam.
Audio-visual thiab Information Technology Equipment Scope:
Suab- cov khoom siv pom kev: xws li hais lus, lub hwj chim amplifiers, cov khoom kaw / playback, TV receivers, set-top boxes, thiab lwm yam.
Cov khoom siv thev naus laus zis: xws li khoos phis tawj, servers, cov khoom siv tso saib, tshuab luam ntawv, scanners, fais fab adapters, thiab lwm yam.
Txoj Kev Nug: Koj tuaj yeem tshawb xyuas seb cov khoom tshwj xeeb xav tau 3C ntawv pov thawj los ntawm lub vev xaib raug cai ntawm CQC (China Quality Certification Center) (path: Product Certification - CCC Product Certification - Certification Scope).
