Insinga za SAS zihuta cyane: Ibihuza n'Ikoranabuhanga mu Guteza Imbere Amajwi

Insinga za SAS zihuta cyane: Ibihuza n'Ikoranabuhanga mu Guteza Imbere Amajwi

Ibisobanuro by'ubuziranenge bw'ibimenyetso

Bimwe mu bipimo by'ingenzi by'ubuziranenge bw'ibimenyetso birimo gutakaza umurongo, kuvugana hagati y'amajwi n'amajwi, gutakaza gusubira inyuma, guhindagurika kw'amajwi mu buryo butandukanye, n'uburebure kuva ku buryo butandukanye kugera ku buryo busanzwe. Nubwo ibi bintu bifitanye isano kandi bigira ingaruka ku bindi, dushobora gusuzuma buri kintu kimwe kimwe kugira ngo twige ingaruka zacyo z'ibanze.
Igihombo cyo gushyiramo
Gutakaza insinga ni ukugabanya uburebure bw'ikimenyetso kuva ku mpera yo kohereza kugeza ku mpera y'insinga yakira, kandi bihuye neza n'inshuro. Gutakaza insinga biterwa kandi n'igipimo cy'insinga, nk'uko bigaragara ku gishushanyo mbonera kiri hepfo. Ku bice by'imbere by'intera bigufi bikoresha insinga za 30 cyangwa 28-AWG, insinga nziza zigomba kugira igipimo kiri munsi ya 2 dB/m kuri 1.5 GHz. Ku byuma byo hanze bya 6 Gb/s SAS bikoresha insinga za 10m, ni byiza gukoresha insinga zifite igipimo cy'insinga cya 24, zifite igipimo cy'igipimo cya 13 dB gusa kuri 3 GHz. Niba ushaka kugera ku gipimo cy'ikimenyetso kinini ku gipimo cyo kohereza amakuru kiri hejuru, garagaza insinga zifite igipimo cy'igipimo kiri hasi ku nsinga ndende, nka SFF-8482 ifite insinga ya POWER cyangwa SlimSAS SFF-8654 8i.

Ikiganiro cy'uruhererekane
Crosstalk yerekeza ku ngufu zoherezwa kuva ku kimenyetso kimwe cyangwa ku kimenyetso kimwe kijya ku kindi kimenyetso cyangwa ku kimenyetso kimwe. Ku nsinga za SAS, niba crosstalk yo hafi (NEXT) idahagije, bizatera ibibazo byinshi byo guhuza. Gupima NEXT bikorwa gusa ku mpera imwe y'umugozi, kandi ni ingano y'ingufu ziva ku kimenyetso cyo kohereza gisohoka kijya ku kimenyetso cyo kwakira gisohoka. Gupima crosstalk yo hafi (FEXT) bikorwa binyuze mu gushyira ikimenyetso mu kimenyetso cyo kohereza gisohoka ku mpera imwe y'umugozi no kureba ingufu zingana zigihari ku kimenyetso cyo kohereza gisohoka ku yindi mpera y'umugozi. NEXT mu bice by'insinga n'ibihuza akenshi biterwa no kutagaragara neza kw'ikimenyetso, bishoboka ko biterwa n'amasoko n'amaplagi, kudashyira hasi neza, cyangwa gukoresha nabi agace gahagarika insinga. Abashushanya sisitemu bagomba kwemeza ko abateranya insinga bakemuye ibi bibazo bitatu, nko mu bice nka MINI SAS HD SFF-8644 cyangwa OCuLink SFF-8611 4i.

24, 26 na 28 ni zo nsinga zisanzwe zitakaza 100Ω.

Ku bijyanye n'insinga nziza, NEXT ipimwa hakurikijwe "SFF-8410 - Ibisobanuro by'ibisabwa mu gupima no gukora neza kwa HSS Copper" igomba kuba iri munsi ya 3%. Ku bijyanye na S-parameter, NEXT igomba kuba iri hejuru ya 28 dB.
Igihombo cyo kugaruza
Igihombo cyo kugaruka gipima ingano y'ingufu zigaragara muri sisitemu cyangwa insinga iyo ikimenyetso gishyizwemo. Izi ngufu zigaragara zituma ikimenyetso kigabanuka ku mpera y'insinga kandi zishobora gutera ibibazo by'ubuziranenge bw'ibimenyetso ku mpera y'itumanaho, ibyo bikaba byatera ibibazo byo kubangamira amashanyarazi kuri sisitemu n'abashushanya sisitemu.
Uku gutakaza ubushobozi bwo gusubiza inyuma guterwa no kudahuza neza kw'impedance mu bice by'insinga. Gusa iyo usuzumye iki kibazo witonze cyane, impedance ntishobora guhinduka iyo ikimenyetso kinyuze mu masoketi, mu miyoboro, no mu miyoboro y'insinga, kugira ngo ugabanye ihindagurika ry'impedance. Ubusanzwe SAS-4 ivugurura agaciro k'impedance kuva kuri ± 10Ω muri SAS-2 kugeza kuri ± 3Ω. Insinga nziza zigomba kugumana ibisabwa mu rugero rwa nominee 85 cyangwa 100 ± 3Ω, nka SFF-8639 hamwe na SATA 15P cyangwa MCIO 74 Pin Cable.

Guhindura isura y'amabara
Mu nsinga za SAS, hari ubwoko bubiri bw'ihindagurika ry'amajwi: hagati y'amajwi atandukanye no mu majwi atandukanye (ikimenyetso cy'ubunyangamugayo bw'ibimenyetso - ikimenyetso cy'itandukaniro). Mu buryo bw'imitekerereze, niba ibimenyetso byinshi byinjijwe icyarimwe ku mpera imwe y'insinga, bigomba kugera ku yindi mpera icyarimwe. Niba ibyo bimenyetso bitageze icyarimwe, iki kintu cyitwa ihindagurika ry'amajwi, cyangwa ihindagurika ry'amajwi. Ku majwi atandukanye, ihindagurika ry'amajwi muri majwi atandukanye ni ugutinda hagati y'abayobora amajwi babiri b'amajwi atandukanye, mu gihe ihindagurika ry'amajwi hagati y'amajwi atandukanye ari ugutinda hagati y'amajwi abiri atandukanye. Ihindagurika ry'amajwi rinini muri majwi atandukanye rishobora kwangiza uburinganire bw'ikimenyetso cyoherezwa, kugabanya uburebure bw'ikimenyetso, kongera igihe, no guteza ibibazo byo kubangamira amashanyarazi. Ku nsinga nziza, ihindagurika ry'amajwi muri majwi atandukanye rigomba kuba munsi ya 10 ps, ​​nka SFF-8654 8i kuri SFF-8643 cyangwa Insinga yo Kurwanya kwibeshya.
Kwivanga kw'amashanyarazi
Hari impamvu nyinshi zitera ibibazo byo kubangamira insinga za elegitoroniki: uburinzi buke cyangwa nta burinzi buhari, uburyo bwo gushingira hasi butari bwo, ibimenyetso bidafite uburinganire, kandi nanone, kudahuza neza kw'imipaka nabyo ni impamvu. Ku nsinga zo hanze, uburinzi n'uburinzi bishobora kuba ibintu bibiri by'ingenzi bigomba kwitabwaho, nka SFF-8087 ifite mesh itukura cyangwa insinga ya Cooper mesh yo gushingira hasi.
Ubusanzwe, uburinzi bwo hanze cyangwa amashanyarazi bugomba kuba ari uburinzi bubiri bwakozwe mu byuma n'urwego rwometseho, bufite uburinzi bungana na 85%. Muri icyo gihe, ubu burinzi bugomba guhuzwa n'ikoti ry'inyuma ry'umuhuza, bufite uburinzi bwa dogere 360. Uburinzi bw'imirongo itandukanye bugomba gutandukanywa n'uburinzi bwo hanze, kandi imirongo yabwo yo kuyungurura igomba kurangirira ku kimenyetso cya sisitemu cyangwa ku butaka bwa DC kugira ngo harebwe uburyo bwo kugenzura impedance ku gice cy'umuhuza n'ibice by'umuhuza, nka SFF-8654 8i Full Wrap anti-slash cyangwa Scoop-proof connector cable.