1. Ukuba zininzi PCB umhlaba, i-SGND, i-AGND, i-GND njl. Kulula ukuthi umhlaba wedijithali kunye nomhlaba we-analog zisetyenziselwa ngokwahlukeneyo ukutyabeka ubhedu. 5.0V, 3.3V, njl. Ngale ndlela, izakhiwo ze-deformation ezininzi zenziwe ngeendlela ezahlukeneyo.

2, kunxibelelwano olwahlukileyo lwendawo enye, indlela ihamba ngo-0 ohms ukumelana okanye ubuhlalu bemagnethi okanye uqhagamshelo lwe-inductance;

3, yikristale oscillator kufutshane ukutyabeka ubhedu, le oscillator yikristale kwisekethe ngumthombo samaza eliphezulu ukukhutshwa, indlela kukuba ingqonge yikristale oscillator ukutyabeka ubhedu, kwaye ke iqokobhe yikristale oscillator ngokwahlukeneyo emhlabeni.

4, isiqithi (indawo efileyo) ingxaki, ukuba uziva umkhulu kakhulu, ke chaza umngxunya wokuyongeza ayisiyongxaki.

5, ekuqaleni kweentambo, kufuneka ilingane emhlabeni, xa ucingo kufanelekile, alunakuthembela kwisambatho sobhedu ngokongeza imingxunya yokuphelisa uqhagamshelo lwepini, esi siphumo sibi kakhulu.

6, ebhodini bekungcono ukuba angabinayo i-Angle ebukhali (= i-180 degrees), kuba ngokwembono ye-electromagnetism, oku kuyindlela yokudlulisela i-eriyali!

7, maleko maleko umaleko ophakathi wendawo evulekileyo ye-wiring, musa ukusebenzisa ubhedu. Kuba kunzima kakhulu ukwenza le pakethi yobhedu “ibekwe kakuhle.”

8, isinyithi ngaphakathi kwezixhobo, ezinje ngerediyetha yentsimbi, umcu wokomeleza isinyithi, kufuneka kufezekiswe “umhlaba olungileyo”.

I-9, isiginali yesithathu yesilawuli sentsimbi esasaza ubushushu, kufuneka ibe yindawo elungileyo. Ibhanti yokuzahlula emhlabeni ecaleni kwecrystal oscillator kufuneka ibekwe kakuhle. Ngamafutshane: ukutyabeka ubhedu kwi-PCB, ukuba ingxaki yokusombulula iphethwe kakuhle, ngokuqinisekileyo “ilungile kunokubi”, inokunciphisa indawo yokubuyela umva yomgca wesiginali, ukunciphisa uphawu lwangaphandle lokuphazanyiswa kombane.