Pamene kupangaPCB njira, chifukwa cha kusanthula koyambirira kwa ntchito sikunachitike kapena kusachitidwa, pambuyo pokonza ndizovuta.Ngati gulu la PCB likufananizidwa ndi mzinda wathu, zigawozo zili ngati mzere pa mzere wa mitundu yonse ya nyumba, mizere yowonetsera ndi misewu ndi zikwalala mumzinda, flyover kuzungulira chilumba, kutuluka kwa msewu uliwonse ndikukonzekera mwatsatanetsatane, mawaya alinso. momwemonso.
1. Wiring zofunika zofunika
A) Mizere yofunikira imakondedwa: magetsi, chizindikiro chaching'ono cha analogi, chizindikiro chothamanga kwambiri, chizindikiro cha wotchi, chizindikiro cholumikizira ndi zizindikiro zina zofunika.
B) Mfundo yofunika kwambiri ya mawaya: Yambitsani mawaya kuchokera pagawo lomwe lili ndi mgwirizano wovuta kwambiri pa bolodi.Cabling imayambira pamalo olumikizidwa kwambiri pa bolodi.
C) Kusamala pakukonza ma siginecha ofunikira: yesetsani kupereka wosanjikiza mawaya apadera pazizindikiro zazikulu monga chizindikiro cha wotchi, chizindikiro chambiri komanso chizindikiritso chodziwika bwino, ndikuwonetsetsa kuti pali malo ocheperako.Ngati ndi kotheka, kutetezedwa ndi kuonjezera malo otetezedwa kuyenera kutengedwa.Tsimikizirani mtundu wa chizindikiro.
D) Maukonde omwe ali ndi zofunikira zowongolera zowongolera adzakonzedwa pagawo lowongolera la impedance, ndipo magawo ake azizindikiro ayenera kupewedwa.
2.Wiring scrambler control
A) Kutanthauzira kwa mfundo ya 3W
Mtunda wapakati pa mizereyo uyenera kukhala 3 kuchulukitsa kwa mzerewo.Kuti muchepetse kukambirana pakati pa mizere, mizere iyenera kukhala yayikulu mokwanira.Ngati mtunda wapakati pa mzere suli wocheperapo nthawi 3 m'lifupi mwake, 70% ya magetsi pakati pa mizere imatha kusungidwa popanda kusokoneza, yomwe imatchedwa lamulo la 3W.
B) Kuwongolera Kusokoneza: CrossTalk imatanthawuza kusokonezana pakati pa maukonde osiyanasiyana pa PCB chifukwa cha mawaya atali ofananira, makamaka chifukwa cha kugawa kwamphamvu komanso kugawa kwapakati pakati pa mizere yofananira.Njira zazikulu zothetsera crosstalk ndi:
I. Wonjezerani masitayilo a ma cabling ofanana ndikutsatira lamulo la 3W;
Ii.Ikani zingwe zodzipatula pakati pa zingwe zofananira
Iii.Kuchepetsa mtunda pakati pa cabling wosanjikiza ndi pansi ndege.
3. General malamulo zofunika mawaya
A) Mayendedwe a ndege yoyandikana ndi orthogonal.Pewani mizere yosiyana yolumikizirana moyandikana kuti muchepetse kusokoneza kosafunikira;Ngati izi ndizovuta kuzipewa chifukwa cha kuchepa kwa kapangidwe ka bolodi (monga ma backplanes ena), makamaka pamene chiwongola dzanja chakwera, muyenera kuganizira zopatula zigawo za mawaya pansi pa ndege ndi zingwe zowonetsera pansi.
B) Mawaya a zida zing'onozing'ono ziyenera kukhala zofananira, ndipo ma SMT pad omwe ali ndi malo otalikirana ayenera kulumikizidwa kuchokera kunja kwa pad.Kulumikizana mwachindunji pakati pa pad sikuloledwa.
C) Lamulo lochepa la loop, ndiko kuti, malo ozungulira omwe amapangidwa ndi mzere wa chizindikiro ndi chingwe chake chiyenera kukhala chaching'ono momwe zingathere.Malo ang'onoang'ono a kuzungulira, kuchepa kwa ma radiation akunja ndi kusokoneza kwakunja.
D) Zingwe za STUB ndizosaloledwa
E) Makulidwe a mawaya a netiweki omwewo akuyenera kukhala chimodzimodzi.Kusiyanasiyana kwa makulidwe a wiring kumapangitsa kuti mzerewo ukhale wosagwirizana.Pamene liwiro lotumizira liri lalitali, kulingalira kudzachitika.Pazifukwa zina, monga cholumikizira kutsogolera waya, BGA phukusi kutsogolera waya dongosolo ofanana, chifukwa cha katayanitsidwe yaing'ono sangathe kupewa kusintha kwa mzere m'lifupi, ayenera kuyesetsa kuchepetsa kutalika ogwira mbali yapakati zosagwirizana.
F) Pewani zingwe zama siginecha kuti zisapange malupu pakati pa zigawo zosiyanasiyana.Vuto lamtunduwu ndilosavuta kuchitika pamapangidwe a mbale za multilayer, ndipo kudzipanga nokha kumayambitsa kusokoneza kwa radiation.
G) Acute Angle ndi ngodya yakumanja ziyenera kupewedwaPCB kupanga, kuchititsa ma radiation osafunika, ndi kupanga ntchito yaPCBsi zabwino.
