{"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\/cs\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-7-opticheskie-priyomniki","title":{"rendered":"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/584ee7cc84df80ab2b060e30286e5b2a.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nHranice mezi optick\u00fdm m\u00e9diem a koaxi\u00e1ln\u00edm kabelem je optick\u00fd p\u0159ij\u00edma\u010d. V tomto \u010dl\u00e1nku se pod\u00edv\u00e1me na jejich konstrukci a nastaven\u00ed.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">Obsah s\u00e9rie \u010dl\u00e1nk\u016f<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">\u010c\u00e1st 1: Obecn\u00e1 architektura s\u00edt\u011b KTV<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">\u010c\u00e1st 2: Slo\u017een\u00ed a forma sign\u00e1lu<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">\u010c\u00e1st 3: Analogov\u00e1 slo\u017eka sign\u00e1lu<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">\u010c\u00e1st 4: Digit\u00e1ln\u00ed slo\u017eka sign\u00e1lu<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">\u010c\u00e1st 5: Koaxi\u00e1ln\u00ed distribu\u010dn\u00ed s\u00ed\u0165<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">\u010c\u00e1st 6: RF sign\u00e1ln\u00ed zesilova\u010de<\/a><\/noindex><\/li>\n<li>\u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de<\/li>\n<li>\u010c\u00e1st 8: Optick\u00e1 p\u00e1te\u0159n\u00ed s\u00ed\u0165<\/li>\n<li>\u010c\u00e1st 9: Hlavn\u00ed stanice<\/li>\n<li>\u010c\u00e1st 10: Diagnostika a \u0159e\u0161en\u00ed probl\u00e9m\u016f na KTV s\u00edti<\/li>\n<\/ul>\n<p>\n\u00dakolem optick\u00e9ho p\u0159ij\u00edma\u010de je p\u0159en\u00e9st sign\u00e1l z optick\u00e9ho m\u00e9dia do elektrick\u00e9ho. V nejjednodu\u0161\u0161\u00ed podob\u011b to lze prov\u00e9st pomoc\u00ed pasivn\u00edho za\u0159\u00edzen\u00ed, kter\u00e9 zaujme svou jednoduchost\u00ed:<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/5f137917cad905f73f5be394bca7743c.JPG\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Tato in\u017een\u00fdrsk\u00e1 novinka v\u0161ak zaji\u0161\u0165uje pom\u011brn\u011b pr\u016fm\u011brn\u00e9 parametry sign\u00e1lu: p\u0159i \u00farovni optick\u00e9ho sign\u00e1lu -1 a\u017e -2 dBm v\u00fdstupn\u00ed parametry sotva spl\u0148uj\u00ed normu a zv\u00fd\u0161en\u00ed sign\u00e1lu vede k v\u00fdrazn\u00e9mu n\u00e1r\u016fstu \u0161umu.<\/p>\n<p>Abychom m\u011bli jistotu o kvalit\u011b dod\u00e1van\u00e9ho sign\u00e1lu, vy\u017eaduje architektura FTTB pou\u017eit\u00ed slo\u017eit\u011bj\u0161\u00edch za\u0159\u00edzen\u00ed:<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/a39ede72e21499c856667d0b2b280969.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nP\u0159ij\u00edma\u010de, kter\u00e9 se v na\u0161\u00ed s\u00edti vyskytuj\u00ed: Vector Lambda, Telmor MOB a dom\u00e1c\u00ed Planar.<\/p>\n<p>Od sv\u00e9ho pasivn\u00edho mlad\u0161\u00edho bratra se v\u0161echny tyto p\u0159ij\u00edma\u010de li\u0161\u00ed slo\u017eit\u011bj\u0161\u00edmi obvody, zahrnuj\u00edc\u00edmi filtry a zesilova\u010de, d\u00edky nim\u017e si m\u016f\u017eeme b\u00fdt jisti, \u017ee sign\u00e1l doraz\u00ed k u\u017eivateli v po\u0159\u00e1dku. Pod\u00edvejme se na n\u011b bl\u00ed\u017ee:<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/1a899e7150b65ff76e73208946ae2156.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nOptick\u00fd p\u0159ij\u00edma\u010d Telmor m\u00e1 uvnit\u0159 panel se sch\u00e9matem struktury. Toto sch\u00e9ma je typick\u00e9 pro OPM.<\/p>\n<p>Po\u017eadovan\u00e1 \u00farove\u0148 optick\u00e9ho sign\u00e1lu se obvykle pohybuje od -10 do +3 dBm, p\u0159i projektov\u00e1n\u00ed a uveden\u00ed do provozu je optim\u00e1ln\u00ed hodnota -1 dBm: to je slu\u0161n\u00e1 rezerva pro p\u0159\u00edpad degradace p\u0159enosov\u00e9 linky a z\u00e1rove\u0148 n\u00edzk\u00e1 \u00farove\u0148 vytv\u00e1\u0159\u00ed m\u00e9n\u011b \u0161umu b\u011bhem pr\u016fchodu obvody za\u0159\u00edzen\u00ed.<\/p>\n<p>Vestav\u011bn\u00fd obvod APU (AGC) v optick\u00e9m p\u0159ij\u00edma\u010di m\u00e1 na starosti regulaci \u00farovn\u011b p\u0159\u00edchoz\u00edho sign\u00e1lu a t\u00edm udr\u017euje v\u00fdstupn\u00ed v r\u00e1mci stanoven\u00fdch parametr\u016f. To znamen\u00e1, \u017ee pokud se z n\u011bjak\u00e9ho d\u016fvodu optick\u00fd sign\u00e1l n\u00e1hle v\u00fdrazn\u011b zm\u011bn\u00ed, ale z\u016fstane v pracovn\u00edm rozsahu APU (p\u0159ibli\u017en\u011b od 0 do -7 dBm), p\u0159ij\u00edma\u010d bude bez probl\u00e9m\u016f pos\u00edlat do koaxi\u00e1ln\u00ed s\u00edt\u011b sign\u00e1l na \u00farovni, kter\u00e1 byla nastavena. Pro zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9 p\u0159\u00edpady existuj\u00ed za\u0159\u00edzen\u00ed s dv\u011bma optick\u00fdmi vstupy, z nich\u017e ka\u017ed\u00fd je monitorov\u00e1n a m\u016f\u017ee b\u00fdt pou\u017eit jak manu\u00e1ln\u011b, tak automaticky.<\/p>\n<p>V\u0161echny aktivn\u00ed OPM obsahuj\u00ed zesilovac\u00ed stupe\u0148, kter\u00fd tak\u00e9 zaji\u0161\u0165uje mo\u017enost regulace sklonu a \u00farovn\u011b v\u00fdstupn\u00edho sign\u00e1lu.<\/p>\n<h1>\u0158\u00edzen\u00ed optick\u00fdch p\u0159ij\u00edma\u010d\u016f<\/h1>\n<p>\nPro nastaven\u00ed parametr\u016f sign\u00e1lu a tak\u00e9 pro zm\u011bnu a kontrolu vestav\u011bn\u00fdch servisn\u00edch funkc\u00ed v p\u0159ij\u00edma\u010d\u00edch obvykle existuj\u00ed jednoduch\u00e9 ovl\u00e1dac\u00ed prvky. U MOBu zobrazen\u00e9ho na v\u00fd\u0161e uveden\u00e9m obr\u00e1zku je to samostatn\u00e1 deska, kter\u00e1 se voliteln\u011b instaluje do sk\u0159\u00edn\u011b. Jako alternativu se nab\u00edz\u00ed rychloup\u00ednac\u00ed deska, kter\u00e1 se instaluje pouze na dobu nastaven\u00ed do port\u016f na hlavn\u00ed desce. V praxi to nen\u00ed p\u0159\u00edli\u0161 pohodln\u00e9, samoz\u0159ejm\u011b.<\/p>\n<p>Ovl\u00e1dac\u00ed panel umo\u017e\u0148uje nastavit hodnoty vstupn\u00edho atenu\u00e1toru (p\u0159i jeho\u017e zv\u00fd\u0161en\u00ed se sni\u017euje v\u00fdstupn\u00ed sign\u00e1l podle koeficientu zes\u00edlen\u00ed), zap\u00ednat nebo vyp\u00ednat (a tak\u00e9 nastavovat pevn\u00e9 hodnoty) ALC, nastavovat parametry sklonu a konfigurovat ethernetov\u00fd interface.<\/p>\n<p>\u010celjabinsk\u00fd OP Planar m\u00e1 p\u0159ehledn\u00fd indik\u00e1tor \u00farovn\u011b optick\u00e9ho sign\u00e1lu a nastaven\u00ed se prov\u00e1d\u00ed jednodu\u0161e: oto\u010dn\u00fdm ovlada\u010dem a v\u00fdm\u011bnou z\u00e1suvek, kter\u00e9 m\u011bn\u00ed charakteristiky zesilovac\u00edho bloku. V odkl\u00e1p\u011bc\u00ed v\u00edku je um\u00edst\u011bn nap\u00e1jec\u00ed blok.<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/9c0873567e055c0292484b3f71ed9f26.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nOP Vector Lambda, navr\u017een\u00fd ve stylu \u201etechnopornografie\u201c, m\u00e1 dvou\u010d\u00edseln\u00fd displej a pouze t\u0159i tla\u010d\u00edtka.<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/ee9f491e8d40db7a66573189429b0fd2.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAby bylo mo\u017en\u00e9 rozli\u0161it kladn\u00e9 hodnoty od z\u00e1porn\u00fdch, tento OP zobrazuje z\u00e1porn\u00e9 hodnoty v\u0161emi segmenty, zat\u00edmco kladnou nulu a +1 ukazuje v\u00fd\u0161kou v polovin\u011b obrazovky. P\u0159i hodnot\u00e1ch nad +1,9 pouze zobrazuje \u201eHI\u201c.<\/p>\n<p>Takov\u00e9 ovl\u00e1dac\u00ed prvky jsou pohodln\u00e9 p\u0159i operativn\u00edm nastaven\u00ed na m\u00edst\u011b, ale pro mo\u017enost vzd\u00e1len\u00e9ho monitorov\u00e1n\u00ed a ovl\u00e1d\u00e1n\u00ed maj\u00ed t\u00e9m\u011b\u0159 v\u0161echny p\u0159ij\u00edma\u010de ethernetov\u00fd port. Webov\u00e9 rozhran\u00ed umo\u017e\u0148uje kontrolovat a m\u011bnit parametry, a pro integraci s monitorovac\u00edmi syst\u00e9my podporuje polling podle SNMP.<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/bd6d6b70f246cbd3355a53f6f28b0fe5.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZde vid\u00edme stejnou typickou struktur\u00e1ln\u00ed sch\u00e9ma OP, na kter\u00e9m je mo\u017enost m\u011bnit parametry ALC a atenu\u00e1toru. Sklon tohoto OP se nastavuje pouze jumpery na desce a m\u00e1 t\u0159i pevn\u00e1 nastaven\u00ed.<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/0b8f2ccc0529f472a5a7721c3cc958ce.JPG\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Vedle sch\u00e9matu jsou zobrazeny d\u016fle\u017eit\u00e9 parametry pro kontrolu: \u00farovn\u011b p\u0159\u00edchoz\u00edch a odchoz\u00edch sign\u00e1l\u016f, a tak\u00e9 hodnoty nap\u011bt\u00ed z\u00edsk\u00e1van\u00e9 z vestav\u011bn\u00e9ho nap\u00e1jec\u00edho bloku. 99 % poruch t\u011bchto OP nast\u00e1v\u00e1 po zhor\u0161en\u00ed t\u011bchto nap\u011bt\u00ed, tak\u017ee je dobr\u00e9 je monitorovat pro prevenci hav\u00e1ri\u00ed.<\/p>\n<p>Pod pojmem Transponder se zde rozum\u00ed IP rozhran\u00ed a tato z\u00e1lo\u017eka obsahuje nastaven\u00ed adresy, masky a br\u00e1ny \u2013 nic zaj\u00edmav\u00e9ho.<\/p>\n<h1>Bonus: pozemn\u00ed televize<\/h1>\n<p>\nToto nesouvis\u00ed s t\u00e9matem s\u00e9rie, ale jen kr\u00e1tce \u0159eknu o p\u0159\u00edjmu televizn\u00edho sign\u00e1lu. Pro\u010d pr\u00e1v\u011b te\u010f? Proto\u017ee kdy\u017e se pod\u00edv\u00e1me na s\u00ed\u0165 v bytov\u00e9m dom\u011b, pr\u00e1v\u011b od zdroje sign\u00e1lu v koaxi\u00e1ln\u00ed distribu\u010dn\u00ed s\u00edti z\u00e1le\u017e\u00ed, zda bude s\u00ed\u0165 kabelov\u00e1 nebo pozemn\u00ed. <\/p>\n<p>P\u0159i absenci optick\u00fdch vl\u00e1ken se m\u00edsto O\/P m\u016f\u017ee nainstalovat p\u0159\u00edjemn\u00edk pozemn\u00edho vys\u00edl\u00e1n\u00ed, nap\u0159\u00edklad Terra MA201:<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/f35f28a1c7813f0a13ac883472bc34e2.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nK vstupn\u00edm port\u016fm p\u0159\u00edjemn\u00edku se p\u0159ipojuje n\u011bkolik ant\u00e9n (obvykle t\u0159i), p\u0159i\u010dem\u017e ka\u017ed\u00e1 zaji\u0161\u0165uje p\u0159\u00edjem sv\u00e9ho frekven\u010dn\u00edho p\u00e1sma.<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/240704544381b0cb45201ae229c3cb09.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<code>S p\u0159echodem na digit\u00e1ln\u00ed vys\u00edl\u00e1n\u00ed tato pot\u0159eba odpad\u00e1, proto\u017ee digit\u00e1ln\u00ed multiplexy se vys\u00edlaj\u00ed v jednom p\u00e1smu.<\/code><\/p>\n<p>Pro ka\u017edou z ant\u00e9n lze nastavit citlivost pro sn\u00ed\u017een\u00ed \u0161umu a tak\u00e9 p\u0159\u00edpadn\u011b poskytnout d\u00e1lkov\u00e9 nap\u00e1jen\u00ed pro vestav\u011bn\u00fd zesilova\u010d v ant\u00e9n\u011b. D\u00e1le sign\u00e1l proch\u00e1z\u00ed zesilovac\u00edm stupn\u011bm a je sumov\u00e1n. Mo\u017enost regulace v\u00fdstupn\u00ed \u00farovn\u011b se omezuje na vyp\u00edn\u00e1n\u00ed stup\u0148\u016f stupn\u011b, p\u0159i\u010dem\u017e regulace sklonu nen\u00ed v\u016fbec p\u0159edpokl\u00e1d\u00e1na: \u017e\u00e1douc\u00ed tvar spektra lze z\u00edskat \u00fapravami citlivosti ka\u017ed\u00e9 ant\u00e9ny jednotliv\u011b. A pokud za takov\u00fdm p\u0159\u00edjemn\u00edkem le\u017e\u00ed kilometry koaxi\u00e1ln\u00edho kabelu, pak se \u00fatlum v n\u011bm \u0159e\u0161\u00ed instalac\u00ed a nastaven\u00edm zesilova\u010d\u016f, podobn\u011b jako na kabelov\u00e9 s\u00edti.<\/p>\n<p>Pokud si p\u0159ejete, m\u016f\u017eete kombinovat zdroje sign\u00e1lu: spojit do jedn\u00e9 s\u00edt\u011b kabelov\u00fd, pozemn\u00ed a tak\u00e9 satelitn\u00ed sign\u00e1l. To se prov\u00e1d\u00ed pomoc\u00ed multiswitch\u016f \u2013 za\u0159\u00edzen\u00ed, kter\u00e1 umo\u017e\u0148uj\u00ed sumovat a rozd\u011blovat sign\u00e1ly z r\u016fzn\u00fdch zdroj\u016f.<\/p>\n<p><img decoding=\"async\" alt=\"Kabelov\u00e9 televizn\u00ed s\u00edt\u011b pro nejmen\u0161\u00ed. \u010c\u00e1st 7: Optick\u00e9 p\u0159ij\u00edma\u010de\" src=\"\/wp-content\/uploads\/2019\/06\/1cecfac52fdf6c4ea6852a64f7b404a1.JPG\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>Zdroj: <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\/cs\/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=\"cs_CZ\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c 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