{"id":14858,"date":"2022-01-11T00:00:00","date_gmt":"2022-01-10T23:00:00","guid":{"rendered":"https:\/\/www.sylex.sk\/prakticky-sprievodca-vyberom-polarity\/"},"modified":"2024-06-05T17:57:34","modified_gmt":"2024-06-05T16:57:34","slug":"prakticky-sprievodca-vyberom-polarity","status":"publish","type":"post","link":"https:\/\/www.sylex.sk\/sk\/prakticky-sprievodca-vyberom-polarity\/","title":{"rendered":"Praktick\u00fd sprievodca v\u00fdberom polarity"},"content":{"rendered":"\t\t
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Od ide\u00e1lneho viacvl\u00e1knov\u00e9ho optick\u00e9ho zv\u00e4zku sa o\u010dak\u00e1va dokonal\u00e1 vizu\u00e1lna str\u00e1nka vyle\u0161ten\u00fdch vl\u00e1kien, vynikaj\u00faca geometria \u010delnej strany a v\u00fdnimo\u010dn\u00e9 optick\u00e9 parametre. \u0160tvrt\u00fdm z\u00e1kladn\u00fdm krit\u00e9riom je spr\u00e1vne spojenie jednotliv\u00fdch vl\u00e1kien v ukon\u010den\u00fdch konektoroch. Pre\u010d\u00edtan\u00edm tohto \u010dl\u00e1nku z\u00edskate jednoduch\u00fd a stru\u010dn\u00fd preh\u013ead faktov t\u00fdkaj\u00facich sa tejto t\u00e9my.<\/p>\n

Spr\u00e1vne pripojenie\/polarita optick\u00fdch zv\u00e4zkov sa \u010dasto pova\u017euje za jasn\u00fa t\u00e9mu bez \u010fal\u0161\u00edch ot\u00e1znikov. V d\u00f4sledku toho sa m\u00f4\u017ee sta\u0165, \u017ee sa tomuto bodu nevenuje dostato\u010dn\u00e1 pozornos\u0165, \u010do m\u00f4\u017ee vies\u0165 k v\u00e1\u017enym probl\u00e9mom, ke\u010f je kompletn\u00e1 optick\u00e1 cesta dokonale vybudovan\u00e1, ale nie je funk\u010dn\u00e1. Cie\u013eom tohto dokumentu nie je vysvetli\u0165 r\u00f4zne typy polariz\u00e1cie a ich funk\u010dnos\u0165, ale upozorni\u0165 na praktick\u00fa \u010das\u0165 ich pou\u017eitia v z\u00e1vislosti od typu pou\u017eit\u00e9ho vysiela\u010da a jeho rozhrania z\u00e1visl\u00e9ho od m\u00e9dia (MDI).<\/p>\n

Z\u00e1kladn\u00e9 pojmy:<\/strong><\/p>\n

– Transceiver – akt\u00edvna \u010das\u0165 optick\u00e9ho kan\u00e1la, ktor\u00e1 obsahuje prij\u00edma\u010d (RX) a vysiela\u010d (TX). V s\u00fa\u010dasnosti s\u00fa najzn\u00e1mej\u0161ie tieto typy:
o SFP
o QSFP
o QSFP DD
o CXP\/CFP (2, 4)
o CPAK<\/p>\n

– Media dependent interface (MDI) – rozhranie (konektor\/adapt\u00e9r) vysiela\u010da, cez ktor\u00e9 je pripojen\u00fd optick\u00fd kan\u00e1l. Existuj\u00fa dva tradi\u010dn\u00e9 typy (LC, MTP\/MPO) a tri nov\u00e9 vyv\u00edjaj\u00face sa typy (MDC, SN, CS).
– Polarita – definuje sp\u00f4sob, ak\u00fdm s\u00fa jednotliv\u00e9 poz\u00edcie vl\u00e1kien dvoch optick\u00fdch konektorov pripojen\u00e9 v r\u00e1mci toho ist\u00e9ho zv\u00e4zku optick\u00fdch vl\u00e1kien.
– Point-to-Point – priame optick\u00e9 pripojenie dvoch vysiela\u010dov bez \u010fal\u0161\u00edch optick\u00fdch modulov\/jednotiek.<\/p>\n

Jedno vl\u00e1kno – duplexn\u00e9 konfigur\u00e1cie<\/span><\/strong><\/span><\/h4>\n
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V pr\u00edpade optick\u00fdch siet\u00ed zalo\u017een\u00fdch na vysiela\u010doch s duplexn\u00fdmi konektormi (v\u00e4\u010d\u0161inou LCD) sa ich vz\u00e1jomn\u00e9 prepojenie realizuje duplexn\u00fdm prepojovac\u00edm k\u00e1blom\/prepojkou. Pou\u017eit\u00fd konektor LCD m\u00e1 zrete\u013en\u00e9 ozna\u010denie „A“ a „B“ na jednotliv\u00fdch poz\u00edci\u00e1ch hlav\u00edc LC. Na vytvorenie spojenia bod-bod sa pou\u017e\u00edva takzvan\u00fd duplexn\u00fd zv\u00e4zok s polaritou „A-B“, ktor\u00fd zabezpe\u010duje spr\u00e1vne pripojenie prij\u00edma\u010da a vysielacej jednotky na oboch stran\u00e1ch optickej cesty. Tento typ polarity sa ozna\u010duje aj ako „CROSS“, preto\u017ee optick\u00fd sign\u00e1l je veden\u00fd z polohy A na jednej strane do polohy B na zv\u00e4zku (obr. 1). Typick\u00e9 pou\u017eitie je pripojenie dvoch modulov SFP (obr. 2).<\/p>\n

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Nov\u00e9 typy vysiela\u010dov ur\u010den\u00e9 pre aplik\u00e1cie 200\/400G maj\u00fa svoje rozhrania zalo\u017een\u00e9 na in\u00fdch typoch duplexn\u00fdch konektorov, ako s\u00fa MDC<\/a>, SN<\/a> alebo CS<\/a>. (Obr. 3). V\u0161etky tri typy vytv\u00e1raj\u00fa zn\u00e1me spojenie TX-RX len pomocou dvoch vl\u00e1kien, ktor\u00e9 s\u00fa v r\u00e1mci zv\u00e4zku kr\u00ed\u017eovo prepojen\u00e9, tak\u017ee polarita sa naz\u00fdva CROSS (pr\u00edklad verzie MDC na obr. 4)<\/p>\n

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Konfigur\u00e1cia s viacer\u00fdmi vl\u00e1knami<\/strong><\/span><\/h4>\n
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Najpou\u017e\u00edvanej\u0161\u00edm viacvl\u00e1knov\u00fdm konektorom je typ MPO. Existuje viacero verzi\u00ed tohto konektora v z\u00e1vislosti od po\u010dtu vl\u00e1kien vo ferule. Na prepojenie transceiverov sa pou\u017e\u00edvaj\u00fa mo\u017enosti s 12, 24 alebo 16 vl\u00e1knami, pri\u010dom 24-vl\u00e1knov\u00e1 mo\u017enos\u0165 m\u00e1 vl\u00e1kna v dvoch paraleln\u00fdch radoch. Poloha vl\u00e1kien v konektore vzh\u013eadom na k\u013e\u00fa\u010d konektora je zn\u00e1zornen\u00e1 na obr. 5.<\/p>\n

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Mo\u017enos\u0165 12 a 16 vl\u00e1kien<\/strong><\/span><\/h4>\n
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Pri pou\u017eit\u00ed 12-vl\u00e1knovej verzie viacvl\u00e1knov\u00e9ho konektora sa uzn\u00e1vaj\u00fa tri r\u00f4zne sp\u00f4soby polarity, ktor\u00e9 s\u00fa podrobne op\u00edsan\u00e9 v norme TIA 568.3 ako typ A:1-1, typ B:1-1 a typ C:1-1. Konkr\u00e9tne zapojenie pou\u017eit\u00fdch zv\u00e4zkov MPO\/MTP sa l\u00ed\u0161i v z\u00e1vislosti od kombin\u00e1cie pou\u017eit\u00e9ho duplexn\u00e9ho prepojovacieho k\u00e1bla a kazety Plug and Play (PnP). Tieto tri stavebn\u00e9 prvky s\u00fa z\u00e1kladn\u00fdmi \u010das\u0165ami v\u00e4\u010d\u0161iny architekt\u00far pou\u017e\u00edvan\u00fdch pre aplik\u00e1cie 10G, v ktor\u00fdch sa po prv\u00fdkr\u00e1t pou\u017e\u00edvaj\u00fa viacvl\u00e1knov\u00e9 zv\u00e4zky. Vzh\u013eadom na to, \u017ee rie\u0161enia 10G s\u00fa zalo\u017een\u00e9 na vysiela\u010doch SFP (s rozhran\u00edm LCD), zv\u00e4zky MPO\/MTP sa pou\u017e\u00edvaj\u00fa ako hlavn\u00e9 k\u00e1ble na pripojenie kaziet PnP, a preto priamo nesp\u00e1jaj\u00fa akt\u00edvne \u010dasti. V\u00fdber polarity kme\u0148a MPO\/MTP zohr\u00e1va d\u00f4le\u017eit\u00fa \u00falohu, najm\u00e4 z h\u013eadiska bud\u00faceho pou\u017eitia. V pr\u00edpade, \u017ee existuje z\u00e1mer migrova\u0165 existuj\u00facu architekt\u00faru 10G na architekt\u00faru s vy\u0161\u0161ou \u0161\u00edrkou p\u00e1sma\/r\u00fdchlos\u0165ou, ako je 40\/100\/400G, u\u017e nasaden\u00e9 MPO\/MTP trunky sa m\u00f4\u017eu pou\u017ei\u0165 na priame pripojenie k QSFP\/QSFP DD.<\/p>\n

Z h\u013eadiska migr\u00e1cie je jedin\u00e1 vhodn\u00e1 verzia Polarita B (TYP B: 1-1). Kr\u00ed\u017eov\u00e9 zapojenie bo\u010dn\u00fdch poz\u00edci\u00ed (na obr. 6 ozna\u010den\u00e9 \u010derven\u00fdmi bodkami) pou\u017eit\u00fdch viacvl\u00e1knov\u00fdch konektorov zabezpe\u010duje spr\u00e1vne pripojenie pr\u00edslu\u0161n\u00fdch kan\u00e1lov TX a RX (4+4) transceiverov typu QSFP\/QSFP DD. MDI tak\u00fdchto akt\u00edvnych \u010dast\u00ed je zn\u00e1zornen\u00fd na obr. 7.<\/p>\n

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Pokia\u013e ide o konektor MPO\/MTP zv\u00e4zku, jeho poz\u00edcia 1 sa nach\u00e1dza v \u013eavom hornom rohu obj\u00edmky (pozri obr. 5). Po zasunut\u00ed tohto konektora do MDI akt\u00edvnej \u010dasti QSFP (obr. 7) sa vl\u00e1kna 1 a 12 konektora spoja s poz\u00edciami RX1 a TX1 MDI. Ke\u010f\u017ee pou\u017eit\u00fd zv\u00e4zok je polarita B, prep\u00e1ja sa poz\u00edcia 1 na jednej strane zv\u00e4zku s poz\u00edciou 12 na druhej strane. V d\u00f4sledku toho sign\u00e1l z TX1 na jednej strane vst\u00fapi do RX1 na druhej strane. Podobne bud\u00fa pripojen\u00e9 aj ostatn\u00e9 p\u00e1ry TX-RX. Rovnak\u00fd princ\u00edp kr\u00ed\u017eov\u00e9ho prepojenia TX a RX pomocou zv\u00e4zkov Polarity B sa pou\u017e\u00edva pri pou\u017eit\u00ed 16-vl\u00e1knov\u00e9ho rozhrania MPO\/MTP – pozri MDI na obr. 8, ktor\u00fd je \u0161pecifick\u00fd pre vysiela\u010de QSFP DD.<\/p>\n

Mo\u017enos\u0165 24 vl\u00e1kien<\/strong><\/span><\/h4>\n
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Rozhranie s vy\u0161\u0161\u00edm po\u010dtom vl\u00e1kien je rozhranie s 24 vl\u00e1knami a dvoma radmi vl\u00e1kien. TIA 568.3 rozozn\u00e1va tri r\u00f4zne polarity: TYP-A:2-2, TYP-B:2-2, TYP-C:2-2 (kompletn\u00fd preh\u013ead je k dispoz\u00edcii tu<\/a>). Z h\u013eadiska poz\u00edci\u00ed TX a RX v r\u00e1mci MDI konkr\u00e9tneho vysiela\u010da existuj\u00fa tri z\u00e1kladn\u00e9 typy: CXP\/CFP, QSFP DD, OSFP – pozri obr. 9.<\/p>\n

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S t\u00fdmto vedom\u00edm je d\u00f4le\u017eit\u00e9 pochopi\u0165 po\u017eadovan\u00e9 prepojenie medzi nimi a vybra\u0165 zv\u00e4zok MPO\/MTP so spr\u00e1vnou polaritou. Na z\u00e1klade obr. 9, pre \u0161t\u00fdl vysiela\u010dov CXP\/CFP a OSFP, kde s\u00fa kan\u00e1ly RX v jednom rade a TX v druhom, mo\u017eno pou\u017ei\u0165 rovnak\u00fd typ polarity – zn\u00e1mu polaritu TYPE-A:2-2( ozna\u010denie SYLEX Polarity „X“) – pozri obr. 10. Zodpovedaj\u00face p\u00e1ry TX-RX s\u00fa umiestnen\u00e9 nad sebou, tak\u017ee pri pou\u017eit\u00ed polarity TYPE-A:2-2 sa spoja oba. Situ\u00e1cia je odli\u0161n\u00e1 v pr\u00edpade transceiveru QSFP DD, kde s\u00fa poz\u00edcie TX a RX rozdelen\u00e9 in\u00fdm sp\u00f4sobom. Na ich spr\u00e1vne pripojenie je potrebn\u00e9 pou\u017ei\u0165 zv\u00e4zok s odli\u0161nou polaritou. \u017dia\u013e, norma TIA 568.3 nepozn\u00e1 polaritu, ktor\u00e1 by zabezpe\u010dila ich spr\u00e1vne pripojenie. Po\u017eadovan\u00e1 polarita zv\u00e4zku mus\u00ed nastavi\u0165 zapojenie 24 vl\u00e1knov\u00fdch konektorov MPO\/MTP tak, aby sa vytvorilo kr\u00ed\u017eov\u00e9 prepojenie v r\u00e1mci toho ist\u00e9ho radu (poz\u00edcia 1 na poz\u00edciu 12 – rad 1 a poz\u00edcia 13 na poz\u00edciu 24 rad \u010d. 2). – pozri obr. 11 – Polarita B.<\/p>\n

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V tabu\u013eke 1 je uveden\u00fd \u00fapln\u00fd preh\u013ead met\u00f3d polarity pre Point-to-Point pripojenie typick\u00fdch vysiela\u010dov v z\u00e1vislosti od pou\u017eit\u00e9ho MDI.<\/p>\n

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V skuto\u010dnosti sa spojenie Point-to-Point nepou\u017e\u00edva vo ve\u013ekom rozsahu, preto\u017ee je v kone\u010dn\u00fdch aplik\u00e1ci\u00e1ch nedostato\u010dne flexibiln\u00e9. Vysiela\u010de sa pou\u017e\u00edvaj\u00fa najm\u00e4 v d\u00e1tov\u00fdch centr\u00e1ch, kde sa vy\u017eaduje vysoko modul\u00e1rna a komplexn\u00e1 \u0161trukt\u00farovan\u00e1 infra\u0161trukt\u00fara optick\u00fdch vl\u00e1kien. Optick\u00fd kan\u00e1l pozost\u00e1va z viacer\u00fdch prvkov, ako s\u00fa prepojovacie k\u00e1ble, kme\u0148ov\u00e9 k\u00e1ble, moduly PnP, dosky zrkadliacich adapt\u00e9rov, fanout a migra\u010dn\u00e9 zv\u00e4zky. Aby sa zabezpe\u010dilo splnenie z\u00e1kladn\u00e9ho princ\u00edpu ka\u017edej sign\u00e1lovej cesty – prepojenie vysiela\u010da a prij\u00edma\u010da -, ka\u017ed\u00e1 jednotliv\u00e1 \u010das\u0165 cesty by mala ma\u0165 spr\u00e1vnu polaritu – nielen hlavn\u00fd viacvl\u00e1knov\u00fd zv\u00e4zok. Na tento \u00fa\u010del by sa mal vo f\u00e1ze n\u00e1vrhu pou\u017ei\u0165 pomerne zlo\u017eit\u00fd proces definovania a kontroly, preto\u017ee ka\u017ed\u00fd prvok vlo\u017een\u00fd do optick\u00e9ho kan\u00e1la priamo ovplyvn\u00ed smerovanie sign\u00e1lu. Na za\u010diatku tohto procesu je nevyhnutn\u00e9 pozna\u0165 nasleduj\u00face vstupy:<\/p>\n

1. Tranceiver<\/strong>
a. Presn\u00e9 typy vysiela\u010dov pou\u017e\u00edvan\u00fdch na oboch stran\u00e1ch optick\u00e9ho kan\u00e1la
b. Rozhranie z\u00e1visl\u00e9 od m\u00e9dia (MDI) v\u0161etk\u00fdch vysiela\u010dov<\/p>\n

2. Optick\u00e9 zv\u00e4zky<\/strong>
a. Typy pou\u017eit\u00fdch konektorov (jednoduch\u00e9\/viacvl\u00e1knov\u00e9, po\u010det vl\u00e1kien)
b. Mno\u017estvo
c. Ich poz\u00edcia v r\u00e1mci optick\u00e9ho kan\u00e1la<\/p>\n

3. Moduly PnP<\/strong>
a. Mno\u017estvo a poloha v optickom kan\u00e1li
b. Optick\u00e9 rozhrania (pou\u017eit\u00e9 adapt\u00e9ry) na vstupnej a v\u00fdstupnej strane
c. Vn\u00fatorn\u00e9 pripojenie modulu PnP.
d. K\u013e\u00fa\u010dovanie adapt\u00e9rov („key-UP\/keyDOWN alebo key-UP\/key-UP“) – v pr\u00edpade viacvl\u00e1knov\u00fdch rozhran\u00ed<\/p>\n

4. Adapt\u00e9ry<\/strong>
a. Mno\u017estvo a poloha v optickom kan\u00e1li
b. Typy a k\u013e\u00fa\u010dovanie pou\u017eit\u00fdch adapt\u00e9rov<\/p>\n

5. Fanout a migra\u010dn\u00e9 zv\u00e4zky<\/strong>
a. Mno\u017estvo a poloha v optickom kan\u00e1li
b. Zapojenie\/polarita – ak existuje preferencia
c. Typy pou\u017eit\u00fdch konektorov<\/p>\n

Na z\u00e1klade uveden\u00fdch \u00fadajov je mo\u017en\u00e9 simulova\u0165 cel\u00fd optick\u00fd kan\u00e1l, sledova\u0165 smerovanie optick\u00e9ho sign\u00e1lu a vybra\u0165 najlep\u0161iu kombin\u00e1ciu polar\u00edt v\u0161etk\u00fdch komponentov s oh\u013eadom na priemyseln\u00e9 normy.<\/span><\/p>\n

Ako pom\u00f4cku n\u00e1jdete v pr\u00edlohe tohto blogu v\u0161etky \u0161tandardn\u00e9 typy z\u00e1kladn\u00fdch konfigur\u00e1ci\u00ed, ktor\u00e9 sa pou\u017e\u00edvaj\u00fa vo v\u00e4\u010d\u0161ine re\u00e1lnych pr\u00edpadov viacvl\u00e1knovej infra\u0161trukt\u00fary.<\/span><\/p>\n

V pr\u00edpade, \u017ee optick\u00fd kan\u00e1l alebo jeho \u010das\u0165 u\u017e existuje, je st\u00e1le mo\u017en\u00e9 navrhn\u00fa\u0165 a vybra\u0165 vhodn\u00e9 ch\u00fdbaj\u00face alebo doplnkov\u00e9 komponenty tak, aby sa nastavilo spr\u00e1vne smerovanie medzi RX a TX na oboch stran\u00e1ch. Ako spolo\u010dnos\u0165 s 25-ro\u010dn\u00fdmi sk\u00fasenos\u0165ami v oblasti n\u00e1vrhu a v\u00fdroby pas\u00edvnych optick\u00fdch syst\u00e9mov je SYLEX v\u017edy pripraven\u00fd rie\u0161i\u0165 \u0161pecifick\u00e9 po\u017eiadavky a probl\u00e9my z\u00e1kazn\u00edkov. To ur\u010dite zah\u0155\u0148a spr\u00e1vne definovanie polarity a monitorovanie komplexn\u00fdch projektov po\u010das v\u00fdrobn\u00e9ho procesu. Ak chcete z\u00edska\u0165 viac inform\u00e1ci\u00ed, kontaktujte n\u00e1s na adrese <\/span>sales@sylex.sk<\/a><\/p>\n

U\u017eito\u010dn\u00e9 odkazy:<\/strong>
[1] Polarity pre 12-vl\u00e1knov\u00e9 MTP zostavy (1-S-2657<\/a>)
[2] Polarity pre 16-vl\u00e1knov\u00e9 MTP zostavy (1-W-8063<\/a>)
[3] Polarity pre 24-vl\u00e1knov\u00e9 MTP zostavy (1-S-2663<\/a>)<\/p>\n

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DODATOK<\/span><\/span><\/strong><\/h1>\n

Odpor\u00fa\u010dan\u00e1 polarita pripojenia Sylex<\/span><\/span><\/strong><\/h1>\n



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10G aplik\u00e1cie (vysiela\u010de SFP)<\/span><\/h4>\n
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VERZIA S 12 VL\u00c1KNAMI<\/span><\/h4>\n

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Na z\u00e1klade 12 vl\u00e1knov\u00e9ho MTP k\u00e1bla s polaritou A ( TIA568.3: Type-A:1-1)<\/span><\/strong><\/p>\n

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Na z\u00e1klade 12 vl\u00e1knov\u00e9ho MTP k\u00e1bla s polaritou B (TIA568.3: Typ-B:1-1)<\/span><\/strong><\/p>\n

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Na z\u00e1klade 12 vl\u00e1knov\u00e9ho MTP k\u00e1bla s polaritou C ( TIA568.3: Type-C:1-1)<\/span><\/strong><\/p>\n

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Na z\u00e1klade 12 vl\u00e1knov\u00e9ho MTP k\u00e1bla s polaritou A ( TIA568.3: Type-A:1-1) + MTP-LC fanout<\/span> <\/b><\/p>\n

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Na z\u00e1klade 12-vl\u00e1knov\u00e9ho modulu PnP a ventil\u00e1tora MTP-LC<\/span><\/strong><\/p>\n

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VERZIA S 24 VL\u00c1KNAMI<\/span><\/h4>\n

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Na z\u00e1klade polarity 24 vl\u00e1knov\u00e9ho MTP k\u00e1bla X ( TIA568.3: Type-A:2-2)<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Pozn\u00e1mky:<\/strong>
– <\/span>V\u0161etky MPO\/MTP adapt\u00e9ry v PnP boxoch s\u00fa typu KEY\/UP – KEY\/DOWN
<\/span>– <\/span>V\u0161etky verzie s\u00fa k dispoz\u00edcii v jednovidovej a viacvidovej verzii
<\/span>– <\/span>Pod podmienkou pou\u017e\u00edvania <\/span>
\n KL\u00c1VES\/HORE – KL\u00c1VES\/DOLE <\/span>
\n<\/strong>MTP adapt\u00e9ry ak\u00fdko\u013evek dodato\u010dn\u00fd po\u010det <\/span>
\n Polarita „A“ <\/span>
\n<\/strong>MTP trunky (ako extender)
mo\u017eno pou\u017ei\u0165 s vyu\u017eit\u00edm rovnakej funkcionality kompletn\u00e9ho kan\u00e1la.<\/span><\/p>\n

40G a 100G aplik\u00e1cie (vysiela\u010de QSFP)<\/span><\/h4>\n
\n

Priame pripojenie vysiela\u010dov QSFP<\/span><\/strong><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Priame pripojenie vysiela\u010dov QSFP + roz\u0161iruj\u00faci kme\u0148<\/span><\/strong><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Pozn\u00e1mky:<\/strong>
– <\/span>Pod podmienkou pou\u017eitia <\/span>
\n KEY\/UP – K\u013d\u00da\u010c\/UP <\/span>
\n<\/strong>MTP adapt\u00e9rov ak\u00fdko\u013evek dodato\u010dn\u00fd po\u010det <\/span>
\n Polarita „B“ <\/span>
\n<\/strong>MTP trunky (ako extender)
mo\u017eno pou\u017ei\u0165 s vyu\u017eit\u00edm rovnakej funkcie kompletn\u00e9ho kan\u00e1la<\/span><\/p>\n

Prechodov\u00fd zv\u00e4zok QSFP na SFP<\/span><\/h4>\n
\n

Priame pripojenie vysiela\u010dov QSFP a SFP<\/span><\/strong><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Kme\u0148 MTP + LC fanout<\/span><\/h4>\n

\"\"<\/p>\n

Na z\u00e1klade 24 vl\u00e1knov\u00e9ho MTP k\u00e1bla s polaritou B ( TIA568.3: Typ-B:1-1) a MTP-LC fanout na priame pripojenie QSFP a SFP transceiverov<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Na z\u00e1klade 12 optick\u00fdch k\u00e1blov MTP s polaritou A (TIA568.3: Typ-A:1-1) a MTP-LC fanout na priame pripojenie vysiela\u010dov QSFP a SFP<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Pozn\u00e1mky:<\/strong>
– <\/span>Pod podmienkou pou\u017e\u00edvania <\/span>
\n KEY\/UP – K\u013d\u00da\u010c\/UP <\/span>
\n<\/strong>MTP adapt\u00e9ry ak\u00fdko\u013evek dodato\u010dn\u00fd po\u010det <\/span>
\n Polarita „B“<\/span>
\n<\/strong>MTP trunky (ako extender)
mo\u017eno pou\u017ei\u0165 s vyu\u017eit\u00edm rovnakej funkcie kompletn\u00e9ho kan\u00e1la
<\/span>– <\/span>Za podmienky pou\u017eitia K<\/strong><\/span>
\n EY\/UP – KL\u00c1VES\/DOWN <\/span>
\n<\/strong>MTP adapt\u00e9ry ak\u00fdko\u013evek \u010fal\u0161\u00ed po\u010det <\/span>
\n Polarita „A“<\/span>
\n<\/strong>MTP trunky (ako extender)
m\u00f4\u017eu by\u0165 pou\u017eit\u00e9 s vyu\u017eit\u00edm rovnakej funkcionality kompletn\u00e9ho kan\u00e1la<\/span><\/p>\n

Zv\u00e4zky CXP \/ CFP \/ OSFP \/ QSFP DD – 24 vl\u00e1kien jeden<\/span><\/h4>\n
\n

Priame pripojenie<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Pripojenie vysiela\u010dov CXP, CFP alebo OSFP<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Pripojenie vysiela\u010dov QSFP DD<\/span><\/strong><\/p>\n

\"\"<\/p>\n

Pozn\u00e1mky:<\/strong>
– <\/span>Pod podmienkou pou\u017e\u00edvania <\/span>
\n KEY\/UP – K\u013d\u00da\u010c\/UP <\/span>
\n<\/strong>MTP adapt\u00e9ry ak\u00fdko\u013evek dodato\u010dn\u00fd po\u010det <\/span>
\n Polarita „B“<\/span>
\n<\/strong>MTP<\/strong>trunky (ako extender)
mo\u017eno pou\u017ei\u0165 s vyu\u017eit\u00edm rovnakej funkcie kompletn\u00e9ho kan\u00e1la
<\/span>– <\/span>Za podmienky pou\u017eitia K<\/strong><\/span>
\n EY\/UP – KL\u00c1VES\/DOWN <\/span>
\n<\/strong>MTP adapt\u00e9ry ak\u00fdko\u013evek \u010fal\u0161\u00ed po\u010det <\/span>
\n Polarita „A“<\/span>
\n<\/strong>MTP trunky (ako extender)
m\u00f4\u017eu by\u0165 pou\u017eit\u00e9 s vyu\u017eit\u00edm rovnakej funkcionality kompletn\u00e9ho kan\u00e1la<\/span><\/p>\n

\n

Eduard Koza <\/b>,mana\u017e\u00e9r v\u00fdskumu a v\u00fdvoja<\/b>, Kontakt<\/a><\/p>\n

Eduard Koza je mana\u017e\u00e9r v\u00fdskumu a v\u00fdvoja v spolo\u010dnosti Sylex. Za\u010d\u00ednal ako projektov\u00fd in\u017einier pre vysoko v\u00fdkonn\u00e9 meden\u00e9 zv\u00e4zky. V roku 2000 roz\u0161\u00edril svoje aktivity o pas\u00edvne produkty na prepojenie optick\u00fdch vl\u00e1kien a syst\u00e9my na sn\u00edmanie optick\u00fdch vl\u00e1kien. Na za\u010diatku tohto obdobia viedol najm\u00e4 viacer\u00e9 technologick\u00e9 transfery a zastre\u0161oval implement\u00e1ciu nov\u00fdch produktov do portf\u00f3lia spolo\u010dnosti.<\/span><\/p>\n

Nesk\u00f4r v spolo\u010dnosti zast\u00e1val funkciu mana\u017e\u00e9ra pre in\u017einierstvo a viedol technologick\u00e9 a in\u017einierske \u010dinnosti zodpovedn\u00e9 za prenos n\u00e1padov z\u00e1kazn\u00edkov do fin\u00e1lnych produktov. Jeho s\u00fa\u010dasn\u00e1 poz\u00edcia zah\u0155\u0148a riadenie novozaveden\u00fdch technick\u00fdch rie\u0161en\u00ed, pri\u010dom vyu\u017e\u00edva svoje poradensk\u00e9 schopnosti t\u00fdkaj\u00face sa prisp\u00f4soben\u00fdch produktov optick\u00fdch prepojen\u00ed.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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New types of transceivers designed for 200\/400G application have their interfaces based on other types of duplex connectors such as MDC<\/a>, SN<\/a> or CS<\/a>. (Fig. 3). All three types create the well-known TX to RX connection using only two fibres, which are cross-connected within the harness, so the polarity is named CROSS (example of MDC version in Fig.4)<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Multi fibre configuration<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The most-used multifibre connector is the MPO type. There are multiple versions of this connector depending on the fibre count within the ferrule. For transceiver interconnection, the 12, 24 or 16 fibre options are used, where the 24 fibre one has the fibres in two parallel rows. The fibre positions within the connector relative to the connector key are shown in Fig. 5.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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12 and 16 fiber option<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Using the 12 fibre version of multifibre connector, three different polarity methods are recognised which are described in detail in the TIA 568.3 standard as Type-A:1-1, Type-B:1-1 and Type-C:1-1. The specific wiring of the MPO\/MTP harnesses used differs depending on the combination of duplex patch cord and Plug and Play (PnP) cassette used. Those three building blocks are the essential parts of most of the architectures used for the 10G applications in which the multifibre harnesses are being used for the first time. Due to the fact that the 10G solutions are based on the SFP transceivers (with LCD interface), the MPO\/MTP harnesses are used as trunk cables for the connection of the PnP cassettes and therefore they do not directly connect the active parts. The polarity selection of the MPO\/MTP trunk plays an important role, especially from the future use point of view. In case there is an intention to migrate the existing 10G architecture to the one with higher bandwidth\/speed, such as 40\/100\/400G, the already deployed MPO\/MTP trunks can be used for direct connection to QSFP\/QSFP DD.<\/p>\n

From the migration perspective, the only suitable version is Polarity B (TYPE B: 1-1). The cross-style wiring of lateral positions (marked by the RED dots in Fig.6) of the multifibre connectors used ensures the proper connection of the corresponding TX and RX channels (4+4) of the QSFP\/QSFP DD types of transceivers. The MDI of such active parts is showed in Fig. 7.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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In regard to the MPO\/MTP connector of the harness, its position 1 is located in the top-left corner of the ferrule (see Fig. 5). Once this connector is plugged into the MDI of the QSFP active part (Fig. 7), fibres 1 and 12 of the connector will mate with the RX1 and TX1 positions of the MDI, respectively. As the harness used is a Polarity B, it cross-connects position 1 on one side of the harness with position 12 on the other side. As a consequence, the signal from TX1 on one side will enter RX1 on the other side. Similarly, the other TX-RX pairs will be connected. The same principle of TX and RX cross-connection using the Polarity B harnesses is used when the 16 fibre MPO\/MTP interface is used \u2013 see MDI in Fig. 8, which is specific for QSFP DD transceivers.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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24 fiber option<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A higher fibre count interface is the 24 fibre one with two rows of fibres. TIA 568.3 recognises three different polarities: TYPE-A:2-2, TYPE-B:2-2, TYPE-C:2-2 (complete overview available here<\/a>). From the perspective of TX and RX positions within the MDI of a specific transceiver, there are three basic types: CXP\/CFP, QSFP DD, OSFP \u2013 see Fig. 9.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Knowing this, it is important to understand the required connection between them and to choose the MPO\/MTP harness with the proper polarity. Based on Fig. 9, for the CXP\/CFP and OSFP style of transceivers where the RX channels are in one row and the TX in another, the same type of polarity can be used \u2013 the well-known polarity TYPE-A:2-2( SYLEX\u2019s designation Polarity \u201cX\u201d) \u2013 see Fig. 10. Corresponding TX-RX pairs are located one above the other, so when using the TYPE-A:2-2 polarity, the two of them will be connected. The situation is different in the case of a QSFP DD transceiver where the TX and RX positions are split a different way. To connect them properly, a harness with different polarity has to be used. Unfortunately, TIA 568.3 does not recognise a polarity which ensures their proper connection. The required harness polarity must set the wiring of the 24 fibre MPO\/MTP connectors in such a way that a cross-connection within the same row (position 1 to position 12 \u2013 row 1 and position 13 to position 24 row No. 2) will be made. \u2013 see Fig. 11 \u2013 Polarity B.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Table 1 shows the complete overview of polarity methods for Point-to-Point connection of typical transceivers depending on the MDI used.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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n reality, the Point-to-Point connection is not widely used because of its insufficient flexibility in final applications. Transceivers are mainly used in datacentres where the high modular and complex structured fibre optic cabling infrastructure is required. The optical channel consists of multiple elements such as patch cords, trunk cables, PnP modules, mirroring adapter plates, fanout and migration harnesses. To ensure that the basic principle of each signal path \u2013 connect the transmitter and receiver \u2013 is fulfilled, each single part of the path should have a proper polarity \u2013 not only the main multifibre harness. To do so, a quite complicated definition and checking process should be applied at the design phase, as each element inserted into the optical channel will directly influence the signal routing. At the beginning of this process, it is essential to know the following inputs:<\/p>\n

1. Tranceiver<\/strong>
a. Exact types of transceivers used on both sides of the optical channel
b. Media dependent interface (MDI) of all transceivers<\/p>\n

2. Optical harnesses<\/strong>
a. Types of connectors used (single\/multifibre, fibre count)
b. Quantity
c. Their positoin within the optical channell<\/p>\n

3. PnP modules<\/strong>
a. Quantity and position within the optical channel
b. Optical interfaces (adapters used) on the input and output side
c. Inner connection of the PnP module.
d. Keying of adapters (\u201ckey-UP\/keyDOWN or key-UP\/key-UP\u201d) \u2013 in the case of multifibre interfaces<\/p>\n

4. Adapter plates<\/strong>
a. Quantity and position within the optical channel
b. Types and keying of adapters used<\/p>\n

5. Fanout and migration harnesses<\/strong>
a. Quantity and position within the optical channel
b. Wiring\/polarity \u2013 if any preference exists
c. Types of connectors used<\/p>\n

Based on the above-mentioned details, there is the possibility to simulate the complete optical channel, track the optical signal routing and choose the best combination of polarities of all components considering the industry standards.<\/span><\/p>\n

As a guideline, please see the appendix of this blog where are listed all the standard types of basic configurations which are used in the most of the real cases of multifiber infrastructure.<\/span><\/p>\n

In case the optical channel or its part is already in place, it is still possible to design and choose the suitable missing or supplementary components in a way which sets up the correct routing between the RX and TX on both sides. As a company with 25 years\u2019 experience in the design and manufacture of passive optical systems, SYLEX is always ready to resolve customers\u2019 specific requirements and issues. This certainly includes the proper polarity definition and monitoring of complex projects during the manufacturing process. For more information, contact us at <\/span>sales@sylex.sk<\/a><\/p>\n

Useful links:<\/strong>
[1] Polarities for 12-fibre MTP assemblies (1-S-2657)<\/a>
[2] Polarities for 16-fibre MTP assemblies (1-W-8063)<\/a>
[3] Polarities for 24-fibre MTP assemblies (1-S-2663)<\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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APPENDIX\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Sylex recommended polarity connections<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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10G applications (SFP transceivers)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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12 FIBER VERSION<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Based on 12 fiber MTP\u2008trunk cable polarity A ( TIA568.3: Type-A:1-1)<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Based on 12 fiber MTP trunk cable polarity B (TIA568.3: Type-B:1-1)<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Based on 12 fiber MTP\u2008trunk cable polarity C ( TIA568.3: Type-C:1-1)<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Based on 12 fiber MTP\u2008trunk cable polarity A ( TIA568.3: Type-A:1-1) + MTP-LC fanout<\/span><\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

24 FIBER VERSION<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Based on 24 fiber MTP\u2008trunk cable polarity X ( TIA568.3: Type-A:2-2)<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Notes:<\/strong>
\u2022 <\/span>All MPO\/MTP adapters in PnP boxes are KEY\/UP \u2013 KEY\/DOWN type
<\/span>\u2022 <\/span>All versions are available in single-mode and multimode version
<\/span>\u2022 <\/span>Under a condition of using <\/span>KEY\/UP \u2013 KEY\/DOWN <\/span><\/strong>MTP adapters any additional count of <\/span>Polarity \u201cA\u201d <\/span><\/strong>MTP trunks (as an extender)
can be used utilizing the same functionality of the complete channel.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

40G and 100G applications (QSFP transceivers)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Direct connection of QSFP\u2008transceivers<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Direct connection of QSFP transceivers + extender trunk<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Notes:<\/strong>
\u2022 <\/span>Under a condition of using <\/span>KEY\/UP \u2013 KEY\/UP <\/span><\/strong>MTP adapters any additional count of <\/span>Polarity \u201cB\u201d <\/span><\/strong>MTP\u2008trunks (as an extender)
can be used utilizing the same functionality of the complete channel<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

QSFP to SFP transition harness<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Direct connection of QSFP and SFP\u2008transceivers<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

MTP trunk + LC\u2008fanout<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Based on 24 fiber MTP\u2008trunk cable polarity B ( TIA568.3: Type-B:1-1) and MTP-LC fanout for direct connection of QSFP and SFP\u2008transceivers<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Based on 12 fiber MTP trunk cable polarity\u2008A (TIA568.3: Type-A:1-1) and MTP-LC fanout for direct connection of QSFP and SFP\u2008transceivers<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Notes:<\/strong>
\u2022 <\/span>Under a condition of using <\/span>KEY\/UP \u2013 KEY\/UP <\/span><\/strong>MTP adapters any additional count of <\/span>Polarity \u201cB\u201d<\/span><\/strong>\u2008MTP\u2008trunks (as an extender)
can be used utilizing the same functionality of the complete channel
<\/span>\u2022 <\/span>Under a condition of using K<\/strong><\/span>EY\/UP \u2013 KEY\/DOWN <\/span><\/strong>MTP adapters any additional count of <\/span>Polarity \u201cA\u201d<\/span><\/strong>\u2008MTP\u2008trunks (as an extender)
can be used utilizing the same functionality of the complete channel<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

CXP\u2008\/\u2008CFP \/\u2008OSFP\u2008\/\u2008QSFP\u2008DD harnesses \u2013 24 fiber one<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Direct connection<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Connection of CXP, CFP or OSFP transceivers<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Connection of QSFP DD transceivers<\/span><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Notes:<\/strong>
\u2022 <\/span>Under a condition of using <\/span>KEY\/UP \u2013 KEY\/UP <\/span><\/strong>MTP adapters any additional count of <\/span>Polarity \u201cB\u201d<\/span><\/strong>\u2008<\/strong>MTP\u2008trunks (as an extender)
can be used utilizing the same functionality of the complete channel
<\/span>\u2022 <\/span>Under a condition of using K<\/strong><\/span>EY\/UP \u2013 KEY\/DOWN <\/span><\/strong>MTP adapters any additional count of <\/span>Polarity \u201cA\u201d<\/span><\/strong>\u2008MTP\u2008trunks (as an extender)
can be used utilizing the same functionality of the complete channel<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

E<\/b>duard Koza, <\/b>R&D Manager<\/b>, Contact<\/a><\/p>\n

Eduard Koza is R&D manager at Sylex. He started as a project engineer for high-performance copper harnesses. In 2000, he widened his activities to passive fiber optic interconnection products and fiber optic sensing systems. At the beginning of this period, he mainly led multiple technology transfers and covered the implementation of new products into the company portfolio.<\/span><\/p>\n

Later, he held the role of Engineering manager in the company and headed the technology and engineering activities responsible for transferring customer ideas to the final products. His current position covers the management of newly introduced technical solutions, utilizing his consultancy skills related to customized fiber optic interconnection products.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Od ide\u00e1lneho viacvl\u00e1knov\u00e9ho optick\u00e9ho zv\u00e4zku sa o\u010dak\u00e1va dokonal\u00e1 vizu\u00e1lna str\u00e1nka vyle\u0161ten\u00fdch vl\u00e1kien, vynikaj\u00faca geometria \u010delnej strany a v\u00fdnimo\u010dn\u00e9 optick\u00e9 parametre. \u0160tvrt\u00fdm z\u00e1kladn\u00fdm krit\u00e9riom je spr\u00e1vne spojenie jednotliv\u00fdch vl\u00e1kien v erminovan\u00fdch konektoroch.<\/p>\n","protected":false},"author":3,"featured_media":11864,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[543,375],"tags":[542],"class_list":["post-14858","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-sk","category-uncategorized-sk","tag-podujatia"],"acf":[],"yoast_head":"\nPraktick\u00fd sprievodca v\u00fdberom polarity - Sylex<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sylex.sk\/sk\/prakticky-sprievodca-vyberom-polarity\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Praktick\u00fd sprievodca v\u00fdberom polarity - 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