{"id":34904,"date":"2019-10-31T22:01:10","date_gmt":"2019-10-31T19:01:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-7-opticheskie-priyomniki\/"},"modified":"2019-10-31T22:01:10","modified_gmt":"2019-10-31T19:01:10","slug":"seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-7-opticheskie-priyomniki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-7-opticheskie-priyomniki","title":{"rendered":"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/584ee7cc84df80ab2b060e30286e5b2a.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA hat\u00e1r az optikai k\u00f6zeg \u00e9s a koaxi\u00e1lis k\u00e1bel k\u00f6z\u00f6tt \u2013 az optikai vev\u0151. Ebben a cikkben megvizsg\u00e1ljuk azok fel\u00e9p\u00edt\u00e9s\u00e9t \u00e9s be\u00e1ll\u00edt\u00e1sait.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">Cikk sorozat tartalma<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">1. r\u00e9sz: A KTV h\u00e1l\u00f3zat \u00e1ltal\u00e1nos architekt\u00far\u00e1ja<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">2. r\u00e9sz: A jel \u00f6sszet\u00e9tele \u00e9s form\u00e1ja<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">3. r\u00e9sz: A jel anal\u00f3g komponense<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">4. r\u00e9sz: A jel digit\u00e1lis komponense<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">5. r\u00e9sz: Koaxi\u00e1lis eloszt\u00f3h\u00e1l\u00f3zat<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">6. r\u00e9sz: RF-jelsz\u00f3r\u00f3k<\/a><\/noindex><\/li>\n<li>7. r\u00e9sz: Optikai vev\u0151k<\/li>\n<li>8. r\u00e9sz: Optikai gerinch\u00e1l\u00f3zat<\/li>\n<li>9. r\u00e9sz: Fej\u00e1llom\u00e1s<\/li>\n<li>10. r\u00e9sz: Hib\u00e1k keres\u00e9se \u00e9s elh\u00e1r\u00edt\u00e1sa a KTV h\u00e1l\u00f3zaton<\/li>\n<\/ul>\n<p>\nAz optikai vev\u0151 feladata a jel \u00e1tvitele az optikai k\u00f6zegb\u0151l elektromosba. A legegyszer\u0171bb form\u00e1ban ezt egy passz\u00edv eszk\u00f6zzel lehet megoldani, amelynek egyszer\u0171s\u00e9ge elragad\u00f3:<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/5f137917cad905f73f5be394bca7743c.JPG\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Ugyanakkor ez a m\u00e9rn\u00f6ki csoda meglehet\u0151sen k\u00f6zepes jelparam\u00e9tereket biztos\u00edt: a -1 \u2014 -2 dBm optikai jelszint mellett a kimeneti param\u00e9terek alig felelnek meg a szabv\u00e1nynak, m\u00edg a jel t\u00falhajt\u00e1sa jelent\u0151s zajn\u00f6veked\u00e9st eredm\u00e9nyez.<\/p>\n<p>A FTTB architekt\u00fara megszor\u00edtott jelmin\u0151s\u00e9g\u00e9nek biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben bonyolultabb eszk\u00f6z\u00f6k haszn\u00e1lata sz\u00fcks\u00e9ges:<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/a39ede72e21499c856667d0b2b280969.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA h\u00e1l\u00f3zatunkban el\u0151fordul\u00f3 vev\u0151k: Vector Lambda, Telmor MOB \u00e9s hazai Planar.<\/p>\n<p>Mindegyik\u00fck a passz\u00edv kisebb testv\u00e9r\u00fckh\u00f6z k\u00e9pest bonyolultabb \u00e1ramkonstrukci\u00f3kkal rendelkezik, amelyek sz\u0171r\u0151ket \u00e9s er\u0151s\u00edt\u0151ket tartalmaznak, ez\u00e1ltal biztosak lehet\u00fcnk abban, hogy a jel eljut az el\u0151fizet\u0151h\u00f6z. Vizsg\u00e1ljuk meg \u0151ket k\u00f6zelebbr\u0151l:<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/1a899e7150b65ff76e73208946ae2156.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA Telmor optikai vev\u0151 belsej\u00e9ben tal\u00e1lhat\u00f3 egy panel, amely a strukt\u00far\u00e1j\u00e1t \u00e1br\u00e1zolja. Ez a s\u00e9ma tipikus az optikai vev\u0151kn\u00e9l.<\/p>\n<p>A sz\u00fcks\u00e9ges optikai jelszint \u00e1ltal\u00e1ban -10 \u00e9s +3 dBm k\u00f6z\u00f6tt van, a tervez\u00e9s \u00e9s ind\u00edt\u00e1s sor\u00e1n az optim\u00e1lis \u00e9rt\u00e9k -1 dBm: ez egy megfelel\u0151 tartal\u00e9k a hordoz\u00f3vonal esetleges degrad\u00e1l\u00f3d\u00e1s\u00e1ra, \u00e9s a viszonylag alacsony jelszint kevesebb zajt kelt az eszk\u00f6z\u00f6k \u00e1ramk\u00f6rein.<\/p>\n<p>Az optikai vev\u0151be be\u00e9p\u00edtett AGC (Automatikus Jelszint Szab\u00e1lyoz\u00f3) \u00e9ppen azt v\u00e9gzi, hogy a bej\u00f6v\u0151 jel szintj\u00e9nek szab\u00e1lyoz\u00e1s\u00e1val a kimeneti param\u00e9tereket a megadott \u00e9rt\u00e9keken tartja. Ez azt jelenti, hogy ha valamilyen okb\u00f3l az optikai jel hirtelen jelent\u0151sen v\u00e1ltozik, de tov\u00e1bbra is az AGC munkatartom\u00e1ny\u00e1n bel\u00fcl marad (kb. 0 \u00e9s -7 dBm k\u00f6z\u00f6tt), akkor a vev\u0151 megb\u00edzhat\u00f3an adja a koaxi\u00e1lis h\u00e1l\u00f3zatba azt a szintet, amelyet a be\u00e1ll\u00edt\u00e1s sor\u00e1n megadtunk. K\u00fcl\u00f6n\u00f6sen fontos esetekben olyan eszk\u00f6z\u00f6k \u00e1llnak rendelkez\u00e9sre, amelyek k\u00e9t optikai bemenettel rendelkeznek, mindegyik folyamatosan figyelhet\u0151 \u00e9s manu\u00e1lisan vagy automatikusan bekapcsolhat\u00f3.<\/p>\n<p>Minden akt\u00edv OP tartalmaz egy er\u0151s\u00edt\u0151 l\u00e1ncot, amely lehet\u0151v\u00e9 teszi a kimeneti jel d\u0151l\u00e9ssz\u00f6g\u00e9nek \u00e9s szintj\u00e9nek szab\u00e1lyoz\u00e1s\u00e1t.<\/p>\n<h1>Optikai vev\u0151k vez\u00e9rl\u00e9se<\/h1>\n<p>\nA jelparam\u00e9terek be\u00e1ll\u00edt\u00e1s\u00e1hoz, valamint az integr\u00e1lt szolg\u00e1ltat\u00e1si funkci\u00f3k m\u00f3dos\u00edt\u00e1s\u00e1hoz \u00e9s ellen\u0151rz\u00e9s\u00e9hez \u00e1ltal\u00e1ban egyszer\u0171 vez\u00e9rl\u0151elemek \u00e1llnak rendelkez\u00e9sre. A fel\u00fcl l\u00e1that\u00f3 MOB eset\u00e9ben ez egy k\u00fcl\u00f6n lap, amely opcion\u00e1lisan telep\u00edthet\u0151 a h\u00e1zba. Alternat\u00edv megold\u00e1sk\u00e9nt egy gyorsan elt\u00e1vol\u00edthat\u00f3 lap haszn\u00e1lata javasolt, amelyet csak a be\u00e1ll\u00edt\u00e1s idej\u00e9re telep\u00edtenek az alaplap portjaiba. A gyakorlatban ez term\u00e9szetesen nem t\u00fal k\u00e9nyelmes.<\/p>\n<p>A vez\u00e9rl\u0151panel lehet\u0151v\u00e9 teszi a bemeneti attan\u00fc\u00e1tor \u00e9rt\u00e9keinek be\u00e1ll\u00edt\u00e1s\u00e1t (amelynek n\u00f6vel\u00e9s\u00e9vel a kimeneti jel a nyeres\u00e9gi t\u00e9nyez\u0151 szerint cs\u00f6kken), az AGC be- \u00e9s kikapcsol\u00e1s\u00e1t (valamint fix \u00e9rt\u00e9kek be\u00e1ll\u00edt\u00e1s\u00e1t), a d\u0151l\u00e9ssz\u00f6g param\u00e9tereinek be\u00e1ll\u00edt\u00e1s\u00e1t \u00e9s az ethernet interf\u00e9sz konfigur\u00e1l\u00e1s\u00e1t.<\/p>\n<p>A cseljabinszki OP Planar vil\u00e1gos optikai jelszint-indik\u00e1torral rendelkezik, a be\u00e1ll\u00edt\u00e1sok pedig rendk\u00edv\u00fcl egyszer\u0171ek: kapcsol\u00f3val \u00e9s cser\u00e9lhet\u0151 bet\u00e9tekkel, amelyek az er\u0151s\u00edt\u0151 l\u00e1nc jellemz\u0151it m\u00f3dos\u00edtj\u00e1k. A lehajthat\u00f3 fed\u00e9l alatt tal\u00e1lhat\u00f3 az t\u00e1pegys\u00e9g.<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/9c0873567e055c0292484b3f71ed9f26.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA \"technoporn\u00f3\" diz\u00e1jnban k\u00e9sz\u00fclt OP Vector Lambda k\u00e9tjegy\u0171 kijelz\u0151vel rendelkezik, \u00e9s mind\u00f6ssze h\u00e1rom gombja van.<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/ee9f491e8d40db7a66573189429b0fd2.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA pozit\u00edv \u00e9rt\u00e9kek elk\u00fcl\u00f6n\u00edt\u00e9se \u00e9rdek\u00e9ben ez az OP a negat\u00edv \u00e9rt\u00e9keket minden szegmensen megjelen\u00edti, m\u00edg a pozit\u00edv null\u00e1t \u00e9s +1-et a k\u00e9perny\u0151 fel\u00e9n\u00e9l magasabban mutatja. +1,9-n\u00e9l nagyobb \u00e9rt\u00e9kek eset\u00e9n egyszer\u0171en \"HI\" feliratot \u00edr ki.<\/p>\n<p>Ezek a vez\u00e9rl\u0151elemek k\u00e9nyelmesek a helysz\u00edni gyors be\u00e1ll\u00edt\u00e1shoz, de a t\u00e1voli nyomon k\u00f6vet\u00e9s \u00e9s vez\u00e9rl\u00e9s lehet\u0151s\u00e9ge \u00e9rdek\u00e9ben szinte minden vev\u0151 rendelkezik ethernet porttal. A webes fel\u00fclet lehet\u0151v\u00e9 teszi a param\u00e9terek ellen\u0151rz\u00e9s\u00e9t \u00e9s m\u00f3dos\u00edt\u00e1s\u00e1t, \u00e9s a megfigyel\u0151rendszerekkel val\u00f3 integr\u00e1ci\u00f3 \u00e9rdek\u00e9ben SNMP lek\u00e9rdez\u00e9st t\u00e1mogat.<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/bd6d6b70f246cbd3355a53f6f28b0fe5.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nItt l\u00e1tjuk ugyanazt a tipikus strukt\u00far\u00e1j\u00fa OP-t, amely lehet\u0151v\u00e9 teszi az AGC \u00e9s az attan\u00fc\u00e1tor param\u00e9tereinek m\u00f3dos\u00edt\u00e1s\u00e1t. A d\u0151l\u00e9ssz\u00f6g ebben az OP-ban csak jumperok seg\u00edts\u00e9g\u00e9vel \u00e1ll\u00edthat\u00f3 be, \u00e9s h\u00e1rom fix poz\u00edci\u00f3val rendelkezik.<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/0b8f2ccc0529f472a5a7721c3cc958ce.JPG\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>A fontos ellen\u0151rz\u00e9si param\u00e9terek, mint az incoming \u00e9s outgoing jelek szintje, valamint az integr\u00e1lt t\u00e1pegys\u00e9gt\u0151l kapott fesz\u00fclts\u00e9g\u00e9rt\u00e9kek, a s\u00e9ma mellett l\u00e1that\u00f3k. Az ilyen OP-k 99%-\u00e1nak meghib\u00e1sod\u00e1sa a fesz\u00fclts\u00e9gek roml\u00e1sa ut\u00e1n k\u00f6vetkezik be, ez\u00e9rt \u00e9rdemes \u0151ket figyelni a balesetek megel\u0151z\u00e9se \u00e9rdek\u00e9ben.<\/p>\n<p>A \"Transponder\" alatt itt az IP interf\u00e9szt \u00e9rtj\u00fck, \u00e9s ez a f\u00fcl tartalmazza a c\u00edm, maszk \u00e9s \u00e1tj\u00e1r\u00f3 be\u00e1ll\u00edt\u00e1sait \u2014 semmi \u00e9rdekes.<\/p>\n<h1>B\u00f3nusz: leveg\u0151ben v\u00e9tel<\/h1>\n<p>\nEz nem kapcsol\u00f3dik a sorozat t\u00e9m\u00e1j\u00e1hoz, de csak r\u00f6viden mes\u00e9lek a TV l\u00e9gv\u00e9tel\u00e9r\u0151l. Mi\u00e9rt most? Csak annyira, hogy ha egy lak\u00f3h\u00e1z h\u00e1l\u00f3zat\u00e1t n\u00e9zz\u00fck, akkor a jelek forr\u00e1sa a koaxi\u00e1lis eloszt\u00f3h\u00e1l\u00f3zatban hat\u00e1rozza meg, hogy a h\u00e1l\u00f3zat k\u00e1bel- vagy l\u00e9gv\u00e9teli lesz. <\/p>\n<p>Optikai sz\u00e1l hi\u00e1ny\u00e1ban a KTV jel helyett ak\u00e1r egy l\u00e9gv\u00e9teli v\u00e9tel is telep\u00edthet\u0151, p\u00e9ld\u00e1ul a Terra MA201:<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/f35f28a1c7813f0a13ac883472bc34e2.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA vev\u0151 bemeneti portjaihoz t\u00f6bb antenna csatlakozik (\u00e1ltal\u00e1ban h\u00e1rom), mindegyik a saj\u00e1t frekvencias\u00e1vj\u00e1t biztos\u00edtja.<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/240704544381b0cb45201ae229c3cb09.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<code>Val\u00f3j\u00e1ban a digit\u00e1lis telev\u00edzi\u00f3z\u00e1sra val\u00f3 \u00e1tt\u00e9r\u00e9ssel m\u00e1r nincs sz\u00fcks\u00e9g erre, mivel a digit\u00e1lis multiplexek egy s\u00e1vban sug\u00e1roznak.<\/code><\/p>\n<p>Minden egyes antenna \u00e9rz\u00e9kenys\u00e9ge be\u00e1ll\u00edthat\u00f3 a zaj cs\u00f6kkent\u00e9s\u00e9re, \u00e9s sz\u00fcks\u00e9g eset\u00e9n t\u00e1voli t\u00e1pot is adhatunk az antenn\u00e1ba \u00e9p\u00edtett er\u0151s\u00edt\u0151nek. Ezut\u00e1n a jel \u00e1thalad az er\u0151s\u00edt\u0151 l\u00e1ncon \u00e9s \u00f6sszead\u00f3dik. A kimeneti szint szab\u00e1lyoz\u00e1s\u00e1nak lehet\u0151s\u00e9ge a l\u00e9pcs\u0151k kikapcsol\u00e1s\u00e1ra korl\u00e1toz\u00f3dik, r\u00e1ad\u00e1sul a hajl\u00edt\u00e1si szab\u00e1lyoz\u00e1s egy\u00e1ltal\u00e1n nem biztos\u00edtott: a megfelel\u0151 spektrumforma el\u00e9r\u00e9s\u00e9hez minden antenna \u00e9rz\u00e9kenys\u00e9g\u00e9t k\u00fcl\u00f6n-k\u00fcl\u00f6n kell be\u00e1ll\u00edtani. Ha a vev\u0151h\u00f6z kilom\u00e9terek koaxi\u00e1lis k\u00e1bel van csatlakoztatva, akkor a csillap\u00edt\u00e1ssal a telep\u00edt\u00e9ssel \u00e9s az er\u0151s\u00edt\u0151k be\u00e1ll\u00edt\u00e1s\u00e1val kell foglalkozni, ugyanazokkal, mint a k\u00e1belh\u00e1l\u00f3zaton.<\/p>\n<p>Ha szeretn\u00e9nk, jeleket kombin\u00e1lhatunk: \u00f6sszegy\u0171jthetj\u00fck egy h\u00e1l\u00f3zatba a k\u00e1bel-, l\u00e9gv\u00e9teli \u00e9s m\u0171holdas jelet. Ezt multiswitch-ekkel \u2014 az eszk\u00f6z\u00f6kkel, amelyek lehet\u0151v\u00e9 teszik a jelek \u00f6sszegz\u00e9s\u00e9t \u00e9s eloszt\u00e1s\u00e1t k\u00fcl\u00f6nb\u00f6z\u0151 forr\u00e1sokb\u00f3l \u2014 hajthatjuk v\u00e9gre.<\/p>\n<p><img decoding=\"async\" alt=\"K\u00e1beltelev\u00edzi\u00f3s h\u00e1l\u00f3zatok a legkisebbeknek. 7. r\u00e9sz: Optikai vev\u0151k\" src=\"\/wp-content\/uploads\/2019\/06\/1cecfac52fdf6c4ea6852a64f7b404a1.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0413\u0440\u0430\u043d\u0438\u0446\u0430 \u043c\u0435\u0436\u0434\u0443 \u043e\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u0440\u0435\u0434\u043e\u0439 \u0438 \u043a\u043e\u0430\u043a\u0441\u0438\u0430\u043b\u044c\u043d\u044b\u043c \u043a\u0430\u0431\u0435\u043b\u0435\u043c \u2014 \u043e\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043f\u0440\u0438\u0451\u043c\u043d\u0438\u043a. \u0412 \u044d\u0442\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0438\u0445 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044e \u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438. \u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u0441\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0442\u0435\u0439 \u0427\u0430\u0441\u0442\u044c 1: \u041e\u0431\u0449\u0430\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 \u0441\u0435\u0442\u0438 \u041a\u0422\u0412 \u0427\u0430\u0441\u0442\u044c 2: \u0421\u043e\u0441\u0442\u0430\u0432 \u0438 \u0444\u043e\u0440\u043c\u0430 \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 3: \u0410\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u0430\u044f \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 4: \u0426\u0438\u0444\u0440\u043e\u0432\u0430\u044f \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 5: \u041a\u043e\u0430\u043a\u0441\u0438\u0430\u043b\u044c\u043d\u0430\u044f \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0441\u0435\u0442\u044c \u0427\u0430\u0441\u0442\u044c 6: \u0423\u0441\u0438\u043b\u0438\u0442\u0435\u043b\u0438 RF-\u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 7: \u041e\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26277,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-34904","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-7-opticheskie-priyomniki\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"hu_HU\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c 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