{"id":35609,"date":"2019-10-31T22:05:19","date_gmt":"2019-10-31T19:05:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-10-poisk-i-ustranenie-neispravnostej-na-seti-ktv\/"},"modified":"2019-10-31T22:05:19","modified_gmt":"2019-10-31T19:05:19","slug":"seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-10-poisk-i-ustranenie-neispravnostej-na-seti-ktv","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-10-poisk-i-ustranenie-neispravnostej-na-seti-ktv","title":{"rendered":"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/d2ca072078d1d2c6bf120118f98a27cf.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nArtikulli p\u00ebrfundimtar, m\u00eb i m\u00ebrzitshmi. T\u00eb lexosh at\u00eb p\u00ebr zhvillim t\u00eb p\u00ebrgjithsh\u00ebm ndoshta nuk ka kuptim, por kur t\u00eb ndodh\u00eb, do t'ju ndihmoj\u00eb shum\u00eb.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">P\u00ebrmbajtja e seris\u00eb s\u00eb artikujve<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">Pjesa 1: Arkitektura e p\u00ebrgjithshme e rrjetit KTV<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">Pjesa 2: Struktur\u00eb dhe forma e sinjalit<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">Pjesa 3: Komponenti analog i sinjalit<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">Pjesa 4: Komponenti digjital i sinjalit<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">Pjesa 5: Rrjeti koaksial shp\u00ebrndar\u00ebs<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">Pjesa 6: Amplifikator\u00ebt e sinjalit RF<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">Pjesa 7: Marr\u00ebsit optik\u00eb<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455355\/\">Pjesa 8: Rrjeti magistral optik<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455858\/\">Pjesa 9: Stacioni kryesor<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/456574\/\">Pjesa 10: Gjetja dhe ndreqja e defekteve n\u00eb rrjetin KTV<\/a><\/noindex><\/li>\n<\/ul>\n<p><\/p>\n<h1>Territori i abonentit<\/h1>\n<p>\nPra, gjyshja juaj nuk po shfaq televizorin. Ju i blenit nj\u00eb t\u00eb ri, por u duk se problemi nuk \u00ebsht\u00eb n\u00eb receptor \u2014 p\u00ebr k\u00ebt\u00eb arsye duhet t\u00eb kontrolloni kabllon. S\u00eb pari, shpesh ndodhin q\u00eb nd\u00ebrlidh\u00ebsit q\u00eb nuk k\u00ebrkojn\u00eb presim t\u00eb \u00e7uditen dhe t\u00eb rrotullohen vet\u00eb me kabllon, gj\u00eb q\u00eb \u00e7on n\u00eb humbje kontakti me mb\u00ebshtjelljen ose madje edhe me filin qendror. Edhe n\u00ebse nd\u00ebrlidh\u00ebsi sapo \u00ebsht\u00eb b\u00ebr\u00eb, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb siguroheni q\u00eb asnj\u00eb nga fijet e mb\u00ebshtjelljes nuk \u00ebsht\u00eb lidhur me p\u00ebrcjell\u00ebsin qendror. P\u00ebrve\u00e7 k\u00ebsaj, diametri i filit qendror zakonisht \u00ebsht\u00eb duksh\u00ebm m\u00eb i gjer\u00eb se apertura n\u00eb priz\u00ebn e receptorit \u2014 kjo \u00ebsht\u00eb e nevojshme p\u00ebr kontakt t\u00eb mir\u00eb p\u00ebrmes skedave q\u00eb hapen n\u00eb nd\u00ebrlidh\u00ebs. Sidoqoft\u00eb, n\u00ebse rast\u00ebsisht e keni z\u00ebvend\u00ebsuar nd\u00ebrlidh\u00ebsin me nj\u00eb q\u00eb fili qendror nuk del \"si\u00e7 \u00ebsht\u00eb\", por kalon n\u00eb nj\u00eb gjilp\u00ebr (si n\u00eb ato q\u00eb kam treguar n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">Pjes\u00ebn 5<\/a><\/noindex> n\u00eb lidhjet p\u00ebr RG-11), ose n\u00ebse keni nd\u00ebrruar nj\u00eb pjes\u00eb t\u00eb kabllit dhe p\u00ebrndryshe jeta e re doli m\u00eb e holl\u00eb, mund t\u00eb p\u00ebrballeni me situat\u00ebn ku petalet e lodhura n\u00eb vendin e lidhjes nuk sigurojn\u00eb nj\u00eb kontakt t\u00eb mir\u00eb me jet\u00ebn qendrore.<\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/2acb909847e7b3b6ef183e5ee7513c65.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nGjat\u00eb matjeve me aparat, t\u00eb gjitha k\u00ebto mund t\u00eb shihen leht\u00ebsisht nga forma e k\u00ebndit t\u00eb spektorit t\u00eb sinjalit, p\u00ebr t\u00eb cilin kam shkruar n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">Pjesa 2<\/a><\/noindex>. K\u00ebshtu mund t\u00eb kontrollojm\u00eb menj\u00ebher\u00eb nivelin e sinjalit (e kujtoj, sipas GOST duhet t\u00eb jet\u00eb jo m\u00eb i ul\u00ebt se 50dBmV p\u00ebr sinjalin digjital dhe 60 p\u00ebr at\u00eb analog) dhe t\u00eb vler\u00ebsojm\u00eb humbjet n\u00eb zon\u00ebn e frekuencave t\u00eb ul\u00ebta dhe ato t\u00eb larta, \u00e7ka do t\u00eb na jap\u00eb shenja p\u00ebr k\u00ebrkimin m\u00eb t\u00eb thell\u00eb t\u00eb problemit.<\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/65e7696d72cbe6ef7185f7b813fdb02c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKujtoj: humbja e frekuencave t\u00eb ul\u00ebta zakonisht lidhet me probleme n\u00eb jet\u00ebn qendrore, nd\u00ebrsa degradimi i fort\u00eb i frekuencave t\u00eb larta tregon p\u00ebr kontakt t\u00eb dob\u00ebt me mb\u00ebshtjell\u00ebsin, \u00e7ka zakonisht \u00ebsht\u00eb e lidhur me lidhjen (ose me gjendjen e p\u00ebrgjithshme t\u00eb dob\u00ebt t\u00eb kabllit, duke p\u00ebrfshir\u00eb gjat\u00ebsin\u00eb e tep\u00ebrt).<\/p>\n<p>Duke t\u00eb shqyrtoni kabllon me koneksion n\u00eb televizor, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb p\u00ebrshkruani gjat\u00ebsin\u00eb e tij n\u00eb t\u00eb gjith\u00eb banes\u00ebn: pasi kablli koaksial nuk \u00ebsht\u00eb thjesht nj\u00eb conductor elektrik, por nj\u00eb valv\u00eb, ndalimet dhe d\u00ebmtimet mekanike nuk jan\u00eb t\u00eb vetmet shqet\u00ebsime; gjithashtu jan\u00eb t\u00eb r\u00ebnd\u00ebsishme edhe p\u00ebrkuljet dhe kthesat. Po ashtu, duhet t\u00eb gjeni t\u00eb gjitha ndar\u00ebsit e sinjalit dhe t\u00eb llogaritni humbjen totale: mund t\u00eb rezultoj\u00eb se deri tani gjith\u00e7ka ka funksionuar n\u00eb kufij dhe nj\u00eb degradim i vog\u00ebl i kabllos ka \u00e7uar n\u00eb mosfunksionim t\u00eb plot\u00eb. N\u00eb k\u00ebt\u00eb rast, p\u00ebr t\u00eb mos e riparuar kabllon e fshehur pas finishit, mund t\u00eb zgjidhni me m\u00eb shum\u00eb men\u00e7uri nominalet e ndar\u00ebsve ose t\u00eb vendosni nj\u00eb amplifikator t\u00eb vog\u00ebl n\u00eb hyrje t\u00eb apartamentit.<\/p>\n<p>N\u00ebse asgj\u00eb nga k\u00ebto nuk v\u00ebrehet dhe kabulli \u00ebsht\u00eb n\u00eb rregull deri n\u00eb panelin e ul\u00ebt t\u00eb energjis\u00eb n\u00eb shkall\u00eb, \u00ebsht\u00eb e nevojshme t\u00eb matet niveli i sinjalit q\u00eb shkon n\u00eb apartament. N\u00eb rast se niveli dhe forma e sinjalit n\u00eb deg\u00ebn e ndar\u00ebsit t\u00eb abonent\u00ebve jan\u00eb normale, at\u00ebher\u00eb vlen t\u00eb vler\u00ebsohet diferenca midis vlerave n\u00eb televizor dhe n\u00eb panel dhe t\u00eb mendojm\u00eb se \u00e7far\u00eb kemi humbur. N\u00ebse shohim q\u00eb humbja deri n\u00eb televizor ka p\u00ebrb\u00ebr\u00eb nj\u00eb vler\u00eb t\u00eb arsyeshme, por gjithsesi shohim probleme me sinjalin n\u00eb deg\u00ebn e ndar\u00ebsit, at\u00ebher\u00eb do t\u00eb ishte e men\u00e7ur t\u00eb vazhdojm\u00eb m\u00eb tej.<\/p>\n<h1>Kali<\/h1>\n<p>\n<img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/e46f8b5f8072a40020d0dbd91d5c300d.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPasi t\u00eb v\u00ebrehesh nj\u00eb problem n\u00eb ndar\u00ebsin e abonent\u00ebve, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb sigurohesh q\u00eb shkaktari nuk \u00ebsht\u00eb vet\u00eb ndar\u00ebsi. Her\u00eb pas here, nj\u00eb nga ndar\u00ebsit mund t\u00eb p\u00ebrkeq\u00ebsoj\u00eb menj\u00ebher\u00eb ose gradualisht parametrat e sinjalit, sidomos n\u00eb ndar\u00ebsit q\u00eb sh\u00ebrbejn\u00eb p\u00ebr nj\u00eb num\u00ebr t\u00eb madh abonent\u00ebsh (m\u00eb shum\u00eb se 4). P\u00ebr k\u00ebt\u00eb, duhet t\u00eb mat\u00ebsh nivelin e sinjalit n\u00eb nj\u00eb ndar\u00ebs tjet\u00ebr (sa m\u00eb larg nga problemi, aq m\u00eb mir\u00eb), si dhe n\u00eb kabllon kryesore q\u00eb hyn. K\u00ebtu, p\u00ebrs\u00ebri, kuptimi i form\u00ebs dhe nivelit t\u00eb duhur t\u00eb sinjalit do t\u00eb ndihmoj\u00eb. Vlera e sh\u00ebnuar n\u00eb ndar\u00ebs p\u00ebr zbehjen n\u00eb ndar\u00ebsin e abonent\u00ebve (p.sh., 412 - 4 ndar\u00ebs me -12dB) duhet t\u00eb hiqet nga ajo q\u00eb u shkall\u00ebzua n\u00eb magistral. N\u00eb ideal, ne duhet t\u00eb marrim numrin q\u00eb arrit\u00ebm nga ndar\u00ebsi i abonent\u00ebve. N\u00ebse ai ndryshon m\u00eb shum\u00eb se nj\u00eb ose dy dB, at\u00ebher\u00eb \u00ebsht\u00eb m\u00eb mir\u00eb t\u00eb z\u00ebvend\u00ebsosh k\u00ebt\u00eb ndar\u00ebs.<\/p>\n<p>N\u00ebse shohim se sinjali tashm\u00eb po vjen p\u00ebrmes magistrales me nj\u00eb pjerr\u00ebsi t\u00eb madhe ose nj\u00eb nivel t\u00eb ul\u00ebt, at\u00ebher\u00eb do t\u00eb duhet t\u00eb njohim ose projektin e stend\u00ebs, ose, duke p\u00ebrfshir\u00eb logjik\u00ebn, t\u00eb mendojm\u00eb dy gj\u00ebra: a \u00ebsht\u00eb nd\u00ebrtuar stenda nga lart ose nga posht\u00eb dhe sa larg jemi nga ndar\u00ebsja m\u00eb e af\u00ebrt. E para mund t\u00eb kuptohet nga se nga vjen ajo kabllo q\u00eb \u00ebsht\u00eb e lidhur me hyrjen e ndar\u00ebsit dhe ku shkon ajo q\u00eb del nga dalja. Zakonisht nuk \u00ebsht\u00eb e v\u00ebshtir\u00eb t\u00eb ndjekim kabllot magistrale direkt n\u00eb panel. N\u00ebse ato nuk jan\u00eb t\u00eb dukshme, mund t\u00eb shkojm\u00eb n\u00eb katin m\u00eb sip\u00ebr (ose m\u00eb posht\u00eb) dhe t\u00eb shohim se \u00e7far\u00eb nominali ka ndarja atje. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">pjesa e pest\u00eb<\/a><\/noindex> ju ndoshta e mbani mend se me largimin nga fillimi, nominali duhet t\u00eb reduktohet. Aty kam shkruar gjithashtu p\u00ebr ndarjen e stend\u00ebs n\u00eb pjes\u00eb (n\u00eb gjuh\u00ebn ton\u00eb ato quhen \"pilyastrat\", nuk jam i sigurt n\u00ebse kjo \u00ebsht\u00eb nj\u00eb terminologji e zakonshme). Zakonisht nj\u00eb pilyastr\u0103 shtrihet n\u00eb 5-6 kate dhe n\u00eb fillim t\u00eb saj ndodhen ndar\u00ebsit me nominalet 20-24 dB, nd\u00ebrsa n\u00eb fund 8-10. Kur b\u00ebhet e qart\u00eb se problemi ndodhet p\u00ebrtej katit, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb gjeni fillimin e pilyastr\u00ebs dhe t\u00eb b\u00ebni matjen nga ndar\u00ebsi kryesor, nga i cili ajo fillon. Problemet k\u00ebtu jan\u00eb t\u00eb nj\u00ebjta: si ndar\u00ebsi vet\u00eb, ashtu edhe kablli i d\u00ebmtuar dhe p\u00ebrfundimi i dob\u00ebt mund t\u00eb ken\u00eb ndikim. Ndonj\u00ebher\u00eb ndodh q\u00eb pas l\u00ebvizjes s\u00eb koneksioneve, sinjali rikthehet (por m\u00eb shpesh krejt\u00ebsisht humbet). N\u00eb k\u00ebt\u00eb rast, duhet t\u00eb rib\u00ebni p\u00ebrfundimet lidh\u00ebse, dhe do t\u00eb ishte thjesht mrekulli n\u00ebse nd\u00ebrtuesit, duke e parashikuar k\u00ebt\u00eb, lan\u00eb nj\u00eb rezerv\u00eb kablli. Sepse gjat\u00eb rib\u00ebrjes, ai duhet t\u00eb shkurtohet. N\u00eb kabllin RG-11 problemi i gabuar i p\u00ebrfundimeve \u00ebsht\u00eb shum\u00eb i zakonsh\u00ebm: kjo \u00ebsht\u00eb ose mosrespektimi i standardit p\u00ebr pastrimin, ku lihen centrale t\u00eb tep\u00ebrta (si rezultat, koneksioni nuk vendoset ngusht dhe kablli mund t\u00eb dal\u00eb nga ai), ose e nj\u00ebjta gj\u00eb, por p\u00ebr shkak t\u00eb nj\u00eb pjese shum\u00eb t\u00eb madhe A (shih figur\u00ebn m\u00eb posht\u00eb).<\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/36f34a2f4c8ee7a4c6e011365ca34f4e.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKjo \u00ebsht\u00eb nj\u00eb gj\u00eb e r\u00ebnd\u00ebsishme p\u00ebr t'u theksuar: edhe pas nj\u00eb pastrimi t\u00eb sakt\u00eb, nuk do t\u00eb ruhet nga gabimi n\u00ebse ai q\u00eb shkrin nuk e vendos mir\u00eb lidhjen dhe jeta qendrore nuk hyn n\u00eb \"gjilp\u00ebr\" e lidhjes. N\u00eb k\u00ebt\u00eb pik\u00eb, gjilp\u00ebra ka l\u00ebvizshm\u00ebri, n\u00ebse e tund at\u00eb me gishta. Kur jeta ka hyr\u00eb mir\u00eb, nuk \u00ebsht\u00eb e mundur ta l\u00ebviz\u00ebsh. Kjo duhet t\u00eb kontrollohet n\u00eb \u00e7do lidhje q\u00eb hiqet.<\/p>\n<p>Me ndar\u00ebsit n\u00eb sht\u00ebpi t\u00eb cilat jan\u00eb m\u00eb shum\u00eb se 10 vje\u00e7are, mund t\u00eb ndodhin ato q\u00eb jan\u00eb t\u00eb njohura mes koleksionist\u00ebve t\u00eb modeleve n\u00eb shkall\u00eb si \"zgjebja e zinkut\".<\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/04815ea2df9846c9aaf81a28bdbbd877.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Foto nga faqja <noindex><a rel=\"nofollow\" href=\"http:\/\/a-time.ru\/forum\/?PAGE_NAME=read&amp;FID=16&amp;TID=266&amp;PAGEN_1=12\">a-time.ru<\/a><\/noindex><\/i><\/p>\n<p>Korpus\u00ebt e ndar\u00ebsve, t\u00eb prodhuar nga aliazh t\u00eb panjohura dhe q\u00eb gjenden n\u00eb kushte t\u00eb k\u00ebqija klimatike, mund t\u00eb shp\u00ebrb\u00ebhen thjesht\u00eb n\u00eb duar n\u00eb p\u00ebrpjekje p\u00ebr t\u00eb hequr lidhjen, ose madje vet\u00ebm duke l\u00ebvizur kabllot n\u00eb pult. Zakonisht, kjo ndodh kur punonj\u00ebsit e lidhjeve jan\u00eb n\u00eb pult, duke shtrir\u00eb internet p\u00ebr dik\u00eb, ose ndonj\u00eb pun\u00eb tjet\u00ebr p\u00ebr domofonin.<\/p>\n<p>N\u00ebse ndarja nga e cila fillon pilastra nuk \u00ebsht\u00eb prishur n\u00eb gjysm\u00eb, dhe niveli i sinjalit n\u00eb t\u00eb \u00ebsht\u00eb po aq i dob\u00ebt sa n\u00eb apartament, at\u00ebher\u00eb duhet t\u00eb k\u00ebrkoni edhe at\u00eb ndar\u00ebs ku ndodh deg\u00ebzimi i par\u00eb dhe t\u00eb matni sinjalin q\u00eb na vjen nga pajisjet aktive nga bodrumi (ose nga habitatet - si \u00ebsht\u00eb nd\u00ebrtuar). N\u00ebse kaloni n\u00eb k\u00ebt\u00eb m\u00ebnyr\u00eb p\u00ebrmes styllit dhe nuk zgjidhni problemin, do t'ju duhet t\u00eb shkoni t\u00eb k\u00ebrkoni pajisjet aktive dhe t\u00eb b\u00ebni matjet atje.<\/p>\n<h1>Pajisje aktive<\/h1>\n<p>\nS\u00eb pari, duhet t\u00eb vini re se midis pranuesve optik\u00eb dhe amplifikator\u00ebve ndodhet gjithashtu nj\u00eb rrjet shp\u00ebrndar\u00ebs, i nd\u00ebrtuar sipas t\u00eb nj\u00ebjtave parime si styllat, dhe k\u00ebshtu ka probleme t\u00eb natyrshme t\u00eb ngjashme. Prandaj, gjith\u00e7ka q\u00eb \u00ebsht\u00eb shkruar m\u00eb sip\u00ebr duhet t\u00eb kontrollohet edhe k\u00ebtu, dhe vet\u00ebm pastaj t\u00eb dyshoni p\u00ebr funksionimin e pajisjeve.<\/p>\n<p>Tani jemi n\u00eb bodrum (n\u00eb \u00e7ati, GRS), p\u00ebrpara kutis\u00eb me amplifikator\u00eb<\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/d3b32e7e60d724633e61bd530ba680c1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDhe gjithashtu ndodh...<\/p>\n<p>N\u00ebse sinjali n\u00eb stend\u00eb nuk ka aspak dhe ka dyshime se amplifikatori \u00ebsht\u00eb i vdekur, at\u00ebher\u00eb \u00ebsht\u00eb m\u00eb e leht\u00eb t\u00eb p\u00ebrcaktohet se cili \u00ebsht\u00eb duke u prekur nga temperatura e tij. Edhe n\u00eb acarin m\u00eb t\u00eb eg\u00ebr n\u00eb ambiente t\u00eb pa ngrohur, nj\u00eb amplifikator funksional do t\u00eb jet\u00eb m\u00eb i ngroht\u00eb se ambienti, nd\u00ebrsa ai q\u00eb \u00ebsht\u00eb djegur do t\u00eb ndiej\u00eb ftoht\u00ebsi. N\u00ebse ndryshimi i temperatur\u00ebs nuk \u00ebsht\u00eb mjaft i madh, hapja do t\u00eb tregoj\u00eb me siguri se brenda amplifikatorit nuk ndizet treguesi i fuqis\u00eb. Nj\u00eb amplifikator i till\u00eb z\u00ebvend\u00ebsohet me nj\u00eb q\u00eb \u00ebsht\u00eb me siguri funksional, dhe m\u00eb pas riparimi b\u00ebhet me ndihm\u00ebn e nj\u00eb stacioni t\u00eb zakonsh\u00ebm t\u00eb saldimit, pasi pothuajse t\u00eb gjitha defektet e shfaqura lidhen me kondensator\u00ebt e fryr\u00eb. Kur z\u00ebvend\u00ebsoni amplifikator\u00ebt me ushqim nga distanca, \u00ebsht\u00eb e nevojshme t\u00eb \u00e7aktivizoni gjith\u00eb rrjetin p\u00ebr t\u00eb parandaluar shkurtimin. Edhe pse tensioni aty nuk \u00ebsht\u00eb shum\u00eb i lart\u00eb (60 V), por rryma nga ai burim energjie q\u00eb ju tregova \u00ebsht\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">pjesa e gjasht\u00eb<\/a><\/noindex> mund t\u00eb jap\u00eb mjaft: me kontaktin e qendr\u00ebs me trupin, nj\u00eb zjarr i mrekulluesh\u00ebm \u00ebsht\u00eb i garantuar. Dhe n\u00ebse forca t\u00eb tilla nuk e kalojn\u00eb gjithmon\u00eb me sukses nd\u00ebrprerjen e energjis\u00eb n\u00eb sht\u00ebpi, at\u00ebher\u00eb me k\u00ebto efekte speciale ka nj\u00eb probabilitet t\u00eb konsideruesh\u00ebm p\u00ebr t\u00eb d\u00ebmtuar edhe disa pajisje t\u00eb tjera, t\u00eb cilat m\u00eb pas do t\u00eb duhet t'i k\u00ebrkoni n\u00eb t\u00eb gjith\u00eb sht\u00ebpin\u00eb.<\/p>\n<p>Por ndonj\u00ebher\u00eb ndodh q\u00eb amplifikatori \u00ebsht\u00eb aktiv, por n\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb b\u00ebn shum\u00eb zhurm\u00eb n\u00eb rrjet, ose thjesht nuk arrin t\u00eb arrij\u00eb nivelin e parashikuar t\u00eb sinjalit (zakonisht 110 dBmV). K\u00ebtu duhet t\u00eb sigurohemi fillimisht q\u00eb sinjali nuk po vjen i d\u00ebmtuar, duke e matur sinjalin n\u00eb hyrje. Disa nga problemet e pazgjidhshme karakteristike t\u00eb amplifikator\u00ebve mund t\u00eb p\u00ebrmenden si m\u00eb posht\u00eb:<\/p>\n<ul>\n<li>Ulja e koeficientit t\u00eb amplifikimit. P\u00ebr shkak t\u00eb degradimit t\u00eb nj\u00eb pjese ose t\u00eb gjith\u00eb kasht\u00ebs amplifikatore, n\u00eb daljen e saj kemi t\u00eb nj\u00ebjtin nivel sinjali si n\u00eb hyrje (ose m\u00eb shum\u00eb, por jo mjaftuesh\u00ebm p\u00ebr funksionim normal).<\/li>\n<li>Zhurma e sinjalit. Puna e amplifikatorit e deformon sinjalin n\u00eb nj\u00eb mas\u00eb sa parametri i marr\u00eb n\u00eb dalje Pista\/Zhurm (C\/N) kalon norm\u00ebn dhe pengon njohjen e sinjalit nga marr\u00ebsit. <\/li>\n<li>Shk\u00ebputja e p\u00ebrb\u00ebr\u00ebsit dixhital t\u00eb sinjalit. Ndonj\u00ebher\u00eb forca amplifikuese kalon n\u00eb m\u00ebnyr\u00eb t\u00eb k\u00ebnaqshme sinjalin analog, por nuk arrin t\u00eb p\u00ebrballoj\u00eb fare \"digjitalin\". Shpesh her\u00eb parametra MER dhe BER, t\u00eb p\u00ebrshkruar n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">4 pjes\u00eb<\/a><\/noindex> kalojn\u00eb jasht\u00eb kufijve t\u00eb pranuesh\u00ebm dhe konstelacioni shnd\u00ebrrohet n\u00eb nj\u00eb kaos, por ndodhin edhe situata arg\u00ebtuese, kur, p\u00ebr shembull, amplifikuesi harrohet p\u00ebr nj\u00eb nga parametrat e modulacionit dhe n\u00eb vend q\u00eb t\u00eb vizatoj\u00eb nj\u00eb konstelacion, tregon n\u00eb ekranin e aparatit nj\u00eb unaz\u00eb ose rreth.<\/li>\n<\/ul>\n<p>\nN\u00ebse shfaqen k\u00ebto defekte, amplifikatori duhet t\u00eb z\u00ebvend\u00ebsohet, por ka probleme q\u00eb mund t\u00eb zgjidhen duke rregulluar. Zakonisht, sinjali n\u00eb daljen e amplifikatorit bie dhe mund t\u00eb jet\u00eb e mjaftueshme t\u00eb zvog\u00eblohet vlera e attenuatorit t\u00eb hyrjes. Ndonj\u00ebher\u00eb ndodh q\u00eb amplifikatori fillon t\u00eb zhurmoj\u00eb p\u00ebr shkak t\u00eb nj\u00eb rritjeje t\u00eb nivelit n\u00eb hyrje, at\u00ebher\u00eb e shtypim at\u00eb me attenuatorin. T\u00eb gjitha rregullimet duhet t\u00eb b\u00ebhen n\u00eb nj\u00eb amplifikator problematik, pasi n\u00ebse, p\u00ebr shembull, zvog\u00eblojm\u00eb sinjalin q\u00eb del nga marr\u00ebsi optik, kjo do t\u00eb ndikoj\u00eb te amplifikator\u00ebt e tjer\u00eb, t\u00eb cil\u00ebt jan\u00eb t\u00eb funksionuesh\u00ebm, dhe do t\u00eb duhet t'i rregullojm\u00eb manualisht p\u00ebr parametrat e ndryshuar. Gjithashtu, p\u00ebr shkak t\u00eb amplifikimit t\u00eb tep\u00ebrt, numri mund t\u00eb shp\u00ebrb\u00ebhet (n\u00eb rast t\u00eb zhurm\u00ebs s\u00eb vog\u00ebl n\u00eb analog). N\u00eb detaje, kam p\u00ebrshkruar rregullimet e amplifikator\u00ebve n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">pjesa e gjasht\u00eb<\/a><\/noindex>.<\/p>\n<p>Mund t\u00eb provoni t\u00eb korrigjoni theksin me konfigurimet. Shumic\u00ebn e koh\u00ebs, gjat\u00eb aktivizimit t\u00eb nj\u00eb rrjeti t\u00eb sapoekipuar, nuk k\u00ebrkohet nj\u00eb theks fillestar i madh p\u00ebr t\u00eb siguruar parametra t\u00eb mir\u00eb n\u00eb skajet e autostrad\u00ebs. Megjithat\u00eb, me kalimin e koh\u00ebs, p\u00ebr shkak t\u00eb degradimit t\u00eb kabllove, mund t\u00eb jet\u00eb e nevojshme t\u00eb rritet theksi, q\u00eb, si\u00e7 e mbajm\u00eb mend, rritet p\u00ebr shkak t\u00eb uljes s\u00eb niveleve t\u00eb frekuencave t\u00eb ul\u00ebta, t\u00eb cil\u00ebn do t\u00eb duhet ta kompensojm\u00eb me nj\u00eb attenuator.<\/p>\n<p>Pranuesit optik\u00eb gjithashtu shpesh vdesin thjesht nga energjia. N\u00ebse n\u00eb hyrje ka nj\u00eb nivel t\u00eb mjaftuesh\u00ebm sinjali (\u00e7far\u00eb \u2014 e kam shkruar n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">pjesa 7<\/a><\/noindex>), at\u00ebher\u00eb zakonisht nuk ka probleme me daljen. Rralle her\u00eb ndodh e nj\u00ebjta gj\u00eb \u2014 zhurm\u00eb e rritur dhe nivel dale t\u00eb pamjaftuesh\u00ebm, por p\u00ebr shkak t\u00eb pakujdesis\u00eb n\u00eb konfigurim, ky problem zakonisht nuk trajtohet. Diagnostikimi \u00ebsht\u00eb i nj\u00ebjt\u00eb \u2014 kontrolloni n\u00ebse \u00ebsht\u00eb ngroht\u00eb apo jo, pas s\u00eb cil\u00ebs matni sinjalin nga dalja.<\/p>\n<p>Dua t\u00eb p\u00ebrmend nj\u00eb her\u00eb lidhjet testuese: nuk \u00ebsht\u00eb gjithmon\u00eb e sigurta t\u2019u besosh atyre. E v\u00ebrteta \u00ebsht\u00eb se, edhe n\u00ebse gjith\u00e7ka \u00ebsht\u00eb n\u00eb rregull, nj\u00eb sinjal i reduktuar me 20-30 dB mund t\u00eb mos ket\u00eb ato probleme q\u00eb ka nj\u00eb dalje \"t\u00eb v\u00ebrtet\u00eb\". Por shpesh ndodhin probleme n\u00eb rrug\u00ebn e sinjalit pas lidhjes testuese, duke krijuar p\u00ebrshtypjen se gjith\u00e7ka \u00ebsht\u00eb mir\u00eb \u2014 kur n\u00eb fakt \u00ebsht\u00eb e tmerrshme. Prandaj, p\u00ebr nj\u00eb besim t\u00eb plot\u00eb, gjithmon\u00eb duhet t\u00eb kontrollojm\u00eb pik\u00ebrisht at\u00eb dalje q\u00eb \u00ebsht\u00eb n\u00eb lidhje me magjistralen.<\/p>\n<h1>Magjistralja optike<\/h1>\n<p>\nMund t\u00eb flas\u00ebsh shum\u00eb p\u00ebr problemet dhe gjetjen e tyre n\u00eb optik\u00eb, dhe \u00ebsht\u00eb shum\u00eb mir\u00eb q\u00eb k\u00ebt\u00eb e kan\u00eb b\u00ebr\u00eb para meje: <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/227647\/\">Salimi i fibrave optike. Pjesa 4: matjet n\u00eb optik\u00eb, marrja dhe analiza e reflektogram\u00ebs<\/a><\/noindex>. Thjesht do t\u00eb them shkurtimisht se n\u00ebse n\u00eb marr\u00ebsin optik shohim nj\u00eb r\u00ebnie t\u00eb sinjalit dhe kjo nuk lidhet me di\u00e7ka t\u00eb till\u00eb:<\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/03c2c7a03122f86a6e9910f2ad8b59f2.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>K\u00ebtu n\u00eb Sh\u00ebn Pet\u00ebrburg, hallet dihen. Dhe optik\u00ebn e nxjerrin edhe n\u00ebn tok\u00eb.<\/i><\/p>\n<p>P\u00ebr t\u00eb ndihmuar mund t\u00eb jet\u00eb pastrimi ose nd\u00ebrrimi i kabllit p\u00ebrfundimtar. Ndonj\u00ebher\u00eb ndodh q\u00eb t\u00eb degradohet receptori optik, ose forca optike, n\u00eb k\u00ebt\u00eb rast medicina \u00ebsht\u00eb sigurisht e pafuqishme. Por n\u00eb p\u00ebrgjith\u00ebsi, pa ndikimin e d\u00ebmsh\u00ebm t\u00eb jasht\u00ebm, optika \u00ebsht\u00eb jasht\u00ebzakonisht e besueshme dhe problemet me t\u00eb, zakonisht, reduktohen n\u00eb nj\u00eb traktor q\u00eb dhunon n\u00eb barin p\u00ebrreth.<\/p>\n<h1>Stacioni kryesor<\/h1>\n<p>\nP\u00ebrve\u00e7 problemeve t\u00eb dukshme me furnizimin me energji dhe lidhjen me burimet p\u00ebrmes rrjetit IP, nj\u00eb nga faktor\u00ebt kryesor\u00eb t\u00eb funksionimit t\u00eb stacionit kryesor \u00ebsht\u00eb moti. Era e fort\u00eb mund leht\u00ebsisht t\u00eb shk\u00ebput\u00eb ose t\u00eb kthej\u00eb antenat, nd\u00ebrsa d\u00ebbora e lag\u00ebsht, q\u00eb mbulon en\u00ebn satelitore, p\u00ebrkeq\u00ebson ndjesh\u00ebm cil\u00ebsin\u00eb e marrjes. \u00cbsht\u00eb e v\u00ebshtir\u00eb t\u00eb luftohet me k\u00ebt\u00eb, pasi antenat vendosen sa m\u00eb lart q\u00eb t\u00eb jet\u00eb e mundur, ku moti \u00ebsht\u00eb i dhunsh\u00ebm dhe madje ngrohja anti-krip\u00eb nuk shpesh e shp\u00ebton, prandaj ndonj\u00ebher\u00eb duhet t\u00eb pastroni ato manualisht. <\/p>\n<p><img decoding=\"async\" alt=\"Rrjetet e televizioneve kabllore p\u00ebr t\u00eb vegjlit. Pjesa 10: Gjetja dhe zgjidhja e problemeve n\u00eb rrjetin KTV\" src=\"\/wp-content\/uploads\/2019\/06\/6f80f8c4bfb6615109b1e1a8fc6bab6e.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nP.S. K\u00ebtu p\u00ebrfundoj ekskursin tim t\u00eb shkurt\u00ebr n\u00eb bot\u00ebn e televizionit kabllor. Shpresoj se k\u00ebto artikuj ndihmuan n\u00eb zgjerimin e horizontit dhe n\u00eb zbulimin e di\u00e7kaje t\u00eb re n\u00eb t\u00eb njohur. P\u00ebr ata q\u00eb punojn\u00eb me k\u00ebt\u00eb, rekomandoj p\u00ebr thellim librin \"Rrjetet kabllore t\u00eb televizionit\", autor Volkov S.V., ISBN 5-93517-190-2. Aty p\u00ebrshkruhet gjith\u00e7ka q\u00eb \u00ebsht\u00eb e nevojshme n\u00eb nj\u00eb gjuh\u00eb mjaft t\u00eb kuptueshme.<br \/>\n<br \/>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/456574\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0417\u0430\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f, \u0441\u0430\u043c\u0430\u044f \u0441\u043a\u0443\u0447\u043d\u0430\u044f \u0441\u0442\u0430\u0442\u044c\u044f-\u0441\u043f\u0440\u0430\u0432\u043e\u0447\u043d\u0438\u043a. \u0427\u0438\u0442\u0430\u0442\u044c \u0435\u0451 \u0434\u043b\u044f \u043e\u0431\u0449\u0435\u0433\u043e \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u044f \u0441\u043c\u044b\u0441\u043b\u0430 \u043d\u0430\u0432\u0435\u0440\u043d\u043e\u0435 \u043d\u0435\u0442, \u043d\u043e \u043a\u043e\u0433\u0434\u0430 \u044d\u0442\u043e \u0441\u043b\u0443\u0447\u0438\u0442\u0441\u044f \u2014 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\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 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26684,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-35609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0417\u0430\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f, 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