Ungayenza njani ngempumelelo iPrototype ye-High-Speed ​​​​Datacom PCB

Yazisa:

Iprototyping yebhodi yesekethe eprintiweyo (PCB) enesantya esiphezulu sonxibelelwano lwedatha inokuba ngumsebenzi onzima. Nangona kunjalo, ngendlela efanelekileyo kunye nolwazi, inokuba ngamava anomdla kwaye anomvuzo.Kwesi sithuba sebhlog, siza kuphonononga inyathelo ngenyathelo lenkqubo yeprototyping yePCB enokusingatha ngempumelelo unxibelelwano lwedatha olukwisantya esiphezulu.

Funda ngeemfuno:

Inyathelo lokuqala prototyping PCB nge high-speed data unxibelelwano kukuqonda ngokucacileyo iimfuno. Qwalasela izinto ezifana nezinga lokudluliselwa kwedatha efunekayo, iiprothokholi kunye nemigangatho eza kusetyenziswa, kunye nengxolo kunye nokuphazamiseka kwesekethe kufuneka imelane. Oku kuqonda kokuqala kuya kukukhokela kwinkqubo.

Khetha amalungu afanelekileyo:

Ukuqinisekisa unxibelelwano lwedatha olukhawulezayo, kubalulekile ukukhetha amacandelo achanekileyo kwiPCB. Khangela amacandelo anempendulo ephezulu rhoqo kunye nejitter ephantsi. Kubalulekile ukuphonononga idatha kunye neenkcukacha ngononophelo ukuqinisekisa ukuba ziyahlangabezana neemfuno zakho. Ukongezelela, cinga ukusebenzisa amacandelo aphambili afana ne-high-speed transceivers okanye i-serializers/deserializers (SerDes) ukuphucula ukusebenza.

Yila uyilo lwePCB:

Uyilo lwePCB ludlala indima ebalulekileyo ekuphumezeni unxibelelwano lwedatha olukhawulezayo. Nika ingqalelo kwimfezeko yomqondiso, ukuthelekisa ubude kunye nolawulo lwe-impedance. Sebenzisa ubuchule obufana nokubonisa umahluko, umzila wemigca, kunye nokuphepha ukugoba okubukhali ukunciphisa ukugqwetheka komqondiso kunye ne-crosstalk. Ukongeza, cinga ukusebenzisa iinqwelomoya ezisemhlabeni kunye namandla ukunyusa ukusebenza ngokubanzi kunye nokunciphisa ukuphazamiseka kwe-electromagnetic (EMI).

Ukulinganisa kunye noYilo loHlahlo:

Ngaphambi kokuqhubeka nophuhliso lweprototype, uyilo kufuneka lufaniswe kwaye luhlalutywe. Sebenzisa izixhobo zesoftware ezifana ne-SPICE (INkqubo yoMfaniso woQhamiso lweSekethe eDityanisiweyo) okanye isifanisi sombane ukuqinisekisa ukusebenza koyilo lwakho. Jonga nayiphi na imiba enokubakho efana nokubonakaliswa komqondiso, ukwaphulwa kwexesha, okanye ingxolo egqithisileyo. Ukwenza uhlengahlengiso oluyimfuneko ngexesha lesigaba soyilo kuya kusindisa ixesha kunye nokunciphisa umngcipheko wokungaphumeleli ngexesha lenkqubo yeprototyping.

Ukwenza iiprototypes zePCB:

Nje ukuba uyilo lugqitywe kwaye luqinisekiswe ngokulinganisa, iprototype yePCB inokuveliswa. Iifayile zoyilo zinokuthunyelwa kwinkampani yokuvelisa iPCB, okanye, ukuba unezixhobo eziyimfuneko, unokucinga ngokwenza iiPCBs endlwini. Qinisekisa ukuba indlela yokuvelisa ekhethiweyo ihlangabezana neemfuno zesantya esiphezulu, njengenkqubo yokuvelisa i-impedance elawulwayo kunye nezixhobo eziphezulu.

Ukudibanisa iprototype:

Nje ukuba ufumane iprototype yePCB egqityiweyo, ungahlanganisa amacandelo. Ngononophelo thengisa icandelo ngalinye kwi-PCB, unike ingqwalasela eyodwa kwizalathisi ezinovakalelo ezinesantya esiphezulu. Sebenzisa ubuchule obufanelekileyo bokuthengisa kwaye uqinisekise ukuba amalungu akho e-solder acocekile kwaye athembekile. Ukulandela iindlela ezigqwesileyo zoshishino kunye nemigangatho kuya kunceda ukuphepha iingxaki ezinokuthi zibe khona ezifana neebhulorho ze-solder okanye ukudibanisa okuvulekileyo.

Vavanya kwaye uqinisekise iiprototypes:

Nje ukuba iprototype yePCB idityanisiwe, kufuneka ivavanywe ngokucokisekileyo kwaye ingqinisiswe. Sebenzisa izixhobo ezifanelekileyo zokuvavanya, ezifana ne-oscilloscope okanye i-analyzer yenethiwekhi, ukuvavanya ukusebenza konxibelelwano lwedatha. Vavanya iindidi ngeendidi zeemeko, kubandakanywa amaxabiso edatha ahlukeneyo, imithwalo eyahlukeneyo kunye nemithombo yengxolo echaphazelekileyo, ukuqinisekisa ukuba iPCB iyahlangabezana neemfuno ezifunekayo. Bhala nayiphi na imiba okanye imida efunyenwe ngexesha lovavanyo ukuze kuphuculwe ngakumbi xa kukho imfuneko.

Phinda kwaye usulungekise uyilo:

Iprototyping yinkqubo ephindaphindwayo, kwaye imingeni okanye iindawo zokuphucula ziya kuhlala zidibana ngexesha lesigaba sovavanyo. Hlalutya iziphumo zovavanyo, chonga imimandla yokuphucula, kwaye wenze utshintsho loyilo ngokufanelekileyo. Khumbula ukuqwalasela imfezeko yomqondiso, ukucinezelwa kwe-EMI, kunye nokubanakho ukwenziwa xa usenza uhlengahlengiso. Phinda uyilo kunye nezigaba zovavanyo njengoko zifuneka de unxibelelwano lwedatha olunqwenelekayo lufezekisiwe.

Ukuququmbela:

Ukuchwetheza nge-PCB enonxibelelwano lwedatha olukwisantya esiphezulu kufuna ukucwangciswa ngononophelo, ingqalelo kwiinkcukacha, kunye nokubambelela kwezona zenzo zilungileyo. Ngokuqonda iimfuno, ukukhetha amacandelo afanelekileyo, ukuyila uyilo oluphuculweyo, ukulinganisa kunye nokuhlalutya uyilo, ukuvelisa i-PCB, ukuyihlanganisa ngokuchanekileyo, kunye nokuvavanya ngokucokisekileyo kunye nokuphindaphinda kwiiprototypes, unokuphuhlisa ngempumelelo ii-PCBs eziphezulu zokusebenza. Unxibelelwano lwedatha olukhawulezayo. Hlala uphucula uyilo kwaye uhlale uhlaziywa ngetekhnoloji yamva nje kunye nemigangatho ukuze uhlale uphambi kwegophe kulo mmandla usoloko uvela.