Tonse tikudziwa kuti kupanga bolodi PCB ndi kutembenuza schema anakonza kukhala PCB bolodi weniweni. Chonde musachepetse njirayi. Pali zinthu zambiri zotheka kwenikweni koma zovuta kukwaniritsa mu polojekiti, kapena ena akhoza kukwaniritsa zinthu zimene anthu ena sangathe kukwaniritsa Mood.
Zovuta ziwiri zazikulu m'munda wa ma microelectronics ndikukonza ma siginecha apamwamba kwambiri komanso ma sign ofooka. Pachifukwa ichi, kupanga kwa PCB ndikofunikira kwambiri. Mfundo kamangidwe yemweyo, zigawo zofanana, anthu osiyana opangidwa PCB adzakhala ndi zotsatira zosiyana, kotero kuti bwino PCB bolodi?
1.Khalani momveka bwino za zolinga zanu zapangidwe
Atalandira ntchito kamangidwe, chinthu choyamba kuchita ndi kumveketsa zolinga zake kamangidwe, amene ali wamba PCB bolodi, mkulu pafupipafupi PCB bolodi, yaing'ono chizindikiro processing PCB bolodi kapena onse pafupipafupi mkulu ndi yaing'ono chizindikiro processing PCB bolodi. Ngati ndi wamba PCB bolodi, malinga ngati masanjidwe ndi wololera ndi mwaukhondo, kukula makina ndi zolondola, monga sing'anga katundu mzere ndi mzere wautali, m'pofunika kugwiritsa ntchito njira zina processing, kuchepetsa katundu, mzere wautali kuti. limbitsani kuyendetsa, cholinga chake ndikuletsa kuwunikira kwa mzere wautali. Pakakhala mizere yopitilira 40MHz pa bolodi, malingaliro apadera ayenera kupangidwa pamizere iyi, monga kuyankhulana pakati pa mizere ndi zina. Ngati mafupipafupi ndi apamwamba, padzakhala malire okhwima pa kutalika kwa waya. Malingana ndi chiphunzitso cha intaneti cha magawo omwe amagawidwa, kuyanjana pakati pa dera lothamanga kwambiri ndi mawaya ake ndi chinthu chotsimikizika, chomwe sichinganyalanyazidwe pakupanga dongosolo. Ndi kuwonjezeka kwa kuthamanga kwa chipata, kutsutsa pa mzere wa chizindikiro kudzawonjezeka mofanana, ndipo crosstalk pakati pa mizere yoyandikana nayo idzawonjezeka molunjika. Nthawi zambiri, kugwiritsa ntchito mphamvu ndi kutentha kwa mabwalo othamanga kwambiri kumakhalanso kwakukulu, kotero chidwi chokwanira chiyenera kuperekedwa kwa PCB yothamanga kwambiri.
Pakakhala chizindikiro chofooka cha millivolt level kapena ngakhale microvolt level pa bolodi, chisamaliro chapadera chimafunika pa mizere iyi. Zizindikiro zazing'ono ndizofooka kwambiri ndipo zimatha kusokonezedwa ndi zizindikiro zina zamphamvu. Njira zotetezera nthawi zambiri zimakhala zofunikira, apo ayi chiŵerengero cha chizindikiro-ku phokoso chidzachepetsedwa kwambiri. Kotero kuti zizindikiro zothandiza zimamizidwa ndi phokoso ndipo sizingathe kuchotsedwa bwino.
Kutumizidwa kwa bolodi kuyeneranso kuganiziridwa mu gawo la mapangidwe, malo enieni a malo oyesera, kudzipatula kwa malo oyesera ndi zinthu zina sizinganyalanyazidwe, chifukwa zizindikiro zina zazing'ono ndi zizindikiro zafupipafupi sizingawonjezedwe mwachindunji probe kuyeza.
Komanso, zinthu zina zofunika ziyenera kuganiziridwa, monga chiwerengero cha zigawo za bolodi, ma CD mawonekedwe a zigawo zikuluzikulu ntchito, mphamvu mawotchi a bolodi, etc. Musanachite PCB bolodi, kupanga kapangidwe kamangidwe. cholinga mu malingaliro.
2.Dziwani masanjidwe ndi mawaya zofunikira za ntchito za zigawo zomwe zimagwiritsidwa ntchito
Monga tikudziwira, zigawo zina zapadera zimakhala ndi zofunikira zapadera pamapangidwe ndi mawaya, monga LOTI ndi amplifier ya chizindikiro cha analogi yogwiritsidwa ntchito ndi APH. Chokulitsa chizindikiro cha analogi chimafuna magetsi okhazikika komanso phokoso laling'ono. Gawo laling'ono la analogi liyenera kukhala kutali ndi chipangizo chamagetsi momwe zingathere. Pa bolodi la OTI, gawo laling'ono lokulitsa ma siginecha lilinso ndi chishango chapadera kuti chiteteze kusokonekera kwa ma electromagnetic. Chip cha GLINK chomwe chimagwiritsidwa ntchito pa bolodi la NTOI chimagwiritsa ntchito njira ya ECL, mphamvu yogwiritsira ntchito mphamvu ndi yayikulu komanso kutentha kwambiri. Vuto la kuwonongeka kwa kutentha liyenera kuganiziridwa pamakonzedwe. Ngati kutentha kwachilengedwe kumagwiritsidwa ntchito, chipangizo cha GLINK chiyenera kuikidwa pamalo omwe mpweya umakhala wosalala, ndipo kutentha komwe kumatulutsidwa sikungakhale ndi mphamvu zambiri pazitsulo zina. Ngati bolodi ili ndi nyanga kapena zida zina zamphamvu kwambiri, ndizotheka kuyambitsa kuipitsidwa kwakukulu kwa magetsi mfundoyi iyeneranso kuyambitsa chidwi chokwanira.
3.Kuganizira za kamangidwe kagawo
Chimodzi mwazinthu zoyamba zomwe ziyenera kuganiziridwa pakuyika kwa zigawo ndizochita zamagetsi. Ikani zigawozo molumikizana kwambiri momwe mungathere. Makamaka kwa mizere ina yothamanga kwambiri, mapangidwe ake ayenera kukhala achidule momwe angathere, ndipo chizindikiro cha mphamvu ndi zipangizo zazing'ono ziyenera kupatulidwa. Pachiyambi chokumana ndi machitidwe adera, zigawozo ziyenera kuikidwa bwino, zokongola, komanso zosavuta kuyesa. Kukula kwamakina kwa bolodi ndi malo a soketi ziyeneranso kuganiziridwa mozama.
Nthawi yochedwa kufalitsa pansi ndi kugwirizanitsa muzitsulo zothamanga kwambiri ndi chinthu choyamba chomwe chiyenera kuganiziridwa pakupanga dongosolo. Nthawi yotumizira pamzere wamakina imakhudza kwambiri liwiro la dongosolo lonse, makamaka pamayendedwe othamanga kwambiri a ECL. Ngakhale kuti chipika chophatikizika chophatikizika chokha chimakhala ndi liwiro lalikulu, liwiro la dongosolo limatha kuchepetsedwa kwambiri chifukwa cha kuchuluka kwa nthawi yochedwa yomwe imabweretsedwa ndi kulumikizana kwapakatikati pa mbale yapansi (pafupifupi 2ns kuchedwa pa 30cm kutalika kwa mzere). Monga kaundula wosinthira, kalunzanitsidwe kauntala mtundu uwu wa kalunzanitsidwe ntchito gawo bwino anaika pa bolodi lomwelo pulagi, chifukwa kufala kuchedwa nthawi ya chizindikiro wotchi osiyana pulagi-mu matabwa si wofanana, akhoza kupanga kusintha kaundula kutulutsa. cholakwika chachikulu, ngati sichingayikidwe pa bolodi, mu kulunzanitsa ndi malo ofunikira, kuchokera ku gwero la wotchi wamba kupita ku pulagi-mu bolodi la kutalika kwa mzere wa wotchi kuyenera kukhala kofanana.
4.Considerations kwa mawaya
Ndikamaliza kupanga OTNI ndi star fiber network, padzakhala matabwa a 100MHz + okhala ndi mizere yothamanga kwambiri kuti apangidwe mtsogolo.
