Digital kanyanga nokuti DVB-T2 nemaoko avo

Digital Coding inoita terevhizheni mureza kuidzosera mugamuchiri, kurerutsa chero kurasikirwa. TV kutsigira unyanzvi, unofanira kuva kanyanga nokuda DVB-T2. Maoko avo kuita mudziyo akadaro isingadhuri zvikuru pane kutenga vakagadzirira-yakaitwa, kubhadhara nokuti vanenge 3 zviuru. Rubles. Air digitaalinen TV unotsiva zvakafanana marudzi ose yedzimudzangara anonongedzera, apo chinopiwa yepamusoro uye zvakasiyana-siyana nhepfenyuro makwara.

Kuchinja mudenga

Ita kanyanga nokuti kumicheto TV kwainzi sezvechinyakare panguva yake nomukurumbira uye inoratidza padanho unyanzvi ari ano nyika iri kufarira mukaravhani mano usingadzimwi, uye vazhinji vakaitwa zvinokosha DVB-T2 kanyanga nemaoko enyu. maindasitiri michina vagadziri kuchinja changing ezvinhu kugamuchirwa kuti batanidza zvemagetsi zvemazuva ano kuti mureza kuvazivisa kuvakwa, kwete kuteerera chokwadi kuti huru zvimiso nokushanda kanyanga raro kudyidzana pamwe pano anonongedzera.

Mumakore achangopfuura, anenge zvose nhepfenyuro kunoitika kuwanda DVB-T2, izvo zvinoderedza mari uye huve nyore, kubva zvoupfumi nemaonero, ari kanyanga-feeder purazi chinja zvechitima. Nokuti nguva nenguva Nokuraramisa kunoda zvishoma zvikuru vakadzidziswa vashandi, basa rake zvishoma kunokuvadza uye ngozi.

Zvinotakura nhepfenyuro anonongedzera akafukidza maguta makuru ose nemisha dzakati vakawanda saka kubata dzakaonda chinozunguzirwa kubva vasina akavatarisa nenhepfenyuro kumaruwa inofambidzana akakodzera kana yakaiswa kanyanga pakugamuchira DVB-T2, Maoko avo chakaitwa nyore zvinhu.

Nokuda kwenguva kuvakwa yanyatsosimba kongiri hurongwa muguta kunge yekudyidzana akachinja mamiriro ezvinhu chiratidzo kupararira munyika yawo. Multi-storey zvivakwa pamwe simbi mapuranga vari mhando girazi, kufungisisa mafungu ane nguva shoma kusvikira kuora wakakwana.

In mhenyu nhepfenyuro dzakawanda dzokuwana vanhasi. The digitaalinen mureza akasiyana nevamwe pakuti kana iri kana isina, pakati nzvimbo hakuna kupiwa. Other hutachiwana hurongwa dzinoratidzwa ndechokuti migero kuonesesa ruzha zvakasiyana, zvichikonzera akaderedza unhu rokushandura, dzimwe nguva mufananidzo anogona chete kurasika. Kanyanga nokuti DVB-T2, nemaoko ake akaita, kuchaita kuti anogamuchira chiratidzo nokuda migero zvose, izvo aratidze unhu mufananidzo.

inokosha-digital kutepfenyura chiratidzo kuti haushandi chipingaidzo kana kwazvo nehafu Decibel ruzha, zvakanaka kugamuchira rinoitwa. On kurasikirwa chiratidzo mismatch rinokanganisa waya kana danho kukanganisa chero chikamu nokupfuuridzirwa mukamuri kusvikira tuner, mufananidzo inogona vakapararira munzvimbo duku zvikamu kunyange kana munhu simba chiratidzo.

Baseline zvatariswa nokuti kugadzirwa ari kanyanga

Asati sei kuti kanyanga DVB-T2 nemaoko avo, vanofanira kuongorora nheyo huchishanda.

Kukomba digitaalinen chiratidzo kunodiwa UHF kanyanga, riri nyore kwazvo kuti kugadzira kubva nyore waya kunyange, achiita zvakarurama kukarukureta.

The dzidziso ndechokuti digitaalinen anonongedzera vari nyore kushandurirwa decimeter siyana uye rinogona kutora mhando kanyanga, asi chaizvoizvo havasi kushanda.

Ita Terevhizheni vakazvimiririra zvinogoneka shoma mari uye pasina rubatsiro kunze, asi zvinofanira kuyeukwa kuti chigadzirwa yaunganidzwa nokugamuchirwa unhu muduku nyanzvi namano.

Zvinodiwa Kuti antennas

New ezvinhu kuti nhepfenyuro, kugoverwa uye negashiro dzedenga kuchinja zvinodiwa zvinokosha kuti vakasangana ne- TV kanyanga nemaoko enyu. DVB-T2 akaita akadzima kare zvinokosha coefficients uye achitaura unodzivirira chiito. Vane ano mano haana basa, sezvo mhepo yakasvibiswa, uye kurwa kunyange navaduku ingress chipingaidzo zvinogoneka chete pachishandiswa Electronics. Panguva imwe cheteyo, izvozvo inoita basa rinokosha coefficient pachavo kanyanga pfuma (CG).

Kanyanga zvakanaka yokuronda Ester ane simba headroom nokuda akagamuchira chiratidzo iyo rinobvumira zvemagetsi akuzungurei kubva kukanganiswa uye ruzha. Modern kanyanga nokuti DVB-T2, nemaoko ake akaita, anoramba zvemagetsi kuita takasununguka, uye kwete dzakashandisa zvinogamuchirika parameters uchishandisa ouinjiniya unyanzvi. Zvinonzi vakabvumirana ari uchishandisa kakawanda yose siyana pasina kushandisa BALANCInG mano.

The zvechadenga amplitude uye kakawanda pamusoro kanyanga

The kanyanga anoitwa zvikwanisike kupfuura mvere, danho kusarurama kunoitika nokuda unopinza achine unhu uye dips. Single-Frequency kanyanga ruchatambanudzirwa zvinogamuchirika chokuita ruzha chiratidzo, nokudaro kuzviraira kugamuchira kusvika 40 makwara. Asi vanongoda mberi harmonization pamusoro amplifiers kuti Sechipanji mafungu kana kukanganisa Pasika zviratidzo.

Inonyatsobudirira digitaalinen kanyanga DVB-T2 yakaitwa nemaoko avo:

• chastotonezavisimoy - pamwe yakaderera chaitwa, asi zvakachipa uye nyore kugadzira, kuti kuvakwa nenzira pfupi, pakugamuchira mune mhepo hwakanyatsorwisa yakachena kure pfupi kubva zvitange chiteshi;
• Periodic chikuva, kuunganidza zvose mafungu noruvazhe, yakanaka siyana avo akasiyana nyore Murongerwo mabasa zvakakwana aiwanzopiwa wokushanda pamwe Frieder yose pakugamuchira chiwedzerwa.

Kana isu kutaura pamusoro design, kupfuura nyore DVB-T2 kanyanga nemaoko enyu ari kugadzirwa shanduro "masere", "Polish" uye "mativi".

The kanyanga kuti "masere" mhando

Rinoreva kuti nyore constructible mudziyo configured maererano mhando neezvitendero masere, iyo reflector chinobviswa. Akakodzera acho ari waya mhangura, asi zvinoshanda aruminiyamu zviuno, pakona, chubhu, tai, imwe profile. The pamusoro Ukuru 140 neMM, ari lateral chikamu pakureba 130 neMM, asi kukura izvi vanopiwa kuti mutungamiriri pakuburitswa haafaniri kurwa navo yakarurama kuti millimeter.

Chokutanga chekawo waya kureba 112 cm kutanga zvakabaya chikamu 140 mm urefu wokutanga, 130 mm iro anoenda kanyanga, uye 10 mm hadzizi loop. Two mugove panguva imwe pakureba 140 neMM, zvinotevera maviri mberi akapeta - 130 neMM, zvinotevera peya 140 neMM, zvichiteverwa mumwe 140 neMM, ipapo - 130 neMM, uye kuita loop wechipiri. Compounds kwerubwinyo rwakagara rwuripo kucheneswa, kukabatanidzwa uye soldered, vari zvakare kutaura kuti vanomhanyisa ari waya core.

Nokutorera waya uye connector anoitwa ane scalpel uye tsono mafaira. Mushure pokunamatidza panosangana chakaputirwa uye waakaita namira kubva inopisa pfuti. Kana isu kutaura pamusoro chivhariso, kuti namira yakadururirwa mukomboni pakati adhesions, uye ipapo mukati mhango pakati chivharo, ipapo zvakawandisa chinobviswa. The mhesano chinoenda nokukurumidza, kuti hazvina kuitika achirapa namira guru. Zvachinja zvikukutu uye kusingaperi vakashinga kubatana. Nokuti kuonana isu kuchenesa waya chinoguma nenzira chivhariso pana 1 masendimita kubva kanyanga - 2 cm.

Indoor Digital kanyanga DVB-T2 nemaoko avo maererano kubatana uye rakanamwa guruu, apo pfungwa kunyorerana inokurudzirwa kuisa yakaoma yemibvunzo iri kukura pejoinhi. Kana chinoshandiswa kuva pachako uye nokuramba wakaomerera panzira wakaiswa mukushanda, asi kuchinjwa harudikanwi, ipapo urongwa haaiti. An midziyo chakatorwa hworudzi urwu nyore rinoburitsa digitaalinen anonongedzera kuna zvakananga mudzinza pamberi TV shongwe ari chinhambwe 10 km pagungano kwokunze kugadzwa.

Uchishandisa "Polish" kanyanga

"Polish" dhishi akamuka zita raro panguva yaimbova Soviet Union somunhu yakavimbika mudziyo pakugamuchira Soviet terevhizheni anonongedzera uyewo mugero ari UHF siyana. Kugamuchira digitaalinen nhepfenyuro izvozvo chaizvo chinozoiswa nokuda kunyatsoshanda duku. Vamwe Fans vari kuedza kutungamirira dzakanakira rakagadzirwa vachigurisira ndebvu decimeter refu uye nokubviswa reflector. Kuchinja kwakadaro, mune zvimwe zviitiko unokubvumira kugadzirisa mufananidzo mune digital format, asi kutaura pamusoro inosimbiswa yakavimbika nemigumisiro hazvigoneki. Achitaura pamusoro Polish zviridzwa, tinogona kuona munhu Qualitative nokushanda gudzazwi, iyo inoshanda zvakanaka chete digital chiratidzo.

Kanyanga mhando "mativi"

Izvi indoor kanyanga DVB-T2, nemaoko ake, ari dzakachinja kopi mureza design, anozivikanwa pasi zita "dzinoungana matatu", umo mune zvinoumba matanhatu uye akapa chienderane transformer. Homemade kanyanga of mhando kubata nechivimbo kugamuchira hova digitaalinen Manyorerwo ari chinhambwe 10 km nenzira yakarurama mutsetse, nokuti yakareba madaro kwaida chiratidzo simba.

Kanyanga Magadzirirwo nyore zviitwe. Huru STRUCTURAL maatomu akafanana ine imwe aruminiyamu Circular muchinjikwa-chikamu waya uye waya chikukutu. The waya ndeyokubvisa matanhatu akaenzana chienderane uye kuti kubviswa anomiririra refu kakawanda transformer, zvikabatanidzwa kuti chiratidzo wire uye DVB-T2-kanyanga pamwe gudzazwi. Nemaoko avo kuita pokunamatidza kuti pfungwa, vachizeya uku ari waya zvemhangura uye pokunamatidza ludyat.

The waya wanamatira kuti kanyanga kuburikidza anokosha okusungisa kana achishandisa zvavo insulating tepi. Kugumiswa rinoitwa nokuisa rutsigiro, achishandisa kudanda kana zvimwe zvinhu. Kana kugadzwa mukati kana kunze nemamiriro huru mamiriro wakanaka-Tuning pamusoro TV shongwe. Izvi zvinoitwa nokushandisa aidzidzisa, kana pasina mutsetse nokuona mirayiridzo raanotaura kubudisa mugumisiro zvakasimba chiratidzo.

ari kanyanga midziyo kwedoro magaba

Mukugadzira michina sezvo zvinobudirira kanyanga iri nyore chaizvo uye kunoda hapana unyanzvi.

With gobvu sikurudhiraivha kana mutsunda kuita akashambidzika buri mutsipa nechimwe nemakeni vaviri vari ipapo Volt kupinda screws. Cable migumo vakasununguka kubva rakarukwa mhangura waya vakagadziridza nebanga kubva varnish, batanidza navo pasi chivharo screws. Very solder zvakanaka kunoguma remubatanidzwa asi hazvo.

Digital kanyanga DVB-T2 akaita inenge maoko avo vanoramba pamusoro yakagadzirirwa njanji kana chubhu yokugadziridza pemahombekombe kuitira kuti daro pakati pavo anoramba 7.5cm. Yechipiri waya Kuguma akashongedzerwa ane mwero chivhariso kuti anopinda mugamuchiri mudziyo iri kuiswa panzvimbo kugadzira zvakanakisisa chiratidzo. Placement kwaiita mudziyo mumugwagwa kunoda zvakavimbika kudzivirirwa okunze. Izvi zvinoitwa chero isapinda zvinhu, kazhinji munzira ndivo epurasitiki mabhodhoro yakakura. The kanyanga anogamuchira kusvika 15 dzokuwana Satellite terevhizheni uye digitaalinen nhepfenyuro.

Kushandisa zviridzwa uye amplification

Pane imwe kure neterevhizheni shongwe kanyanga inokwanisa kugamuchira anonongedzera asina kuisa mamwe muedzo namano. Pakugamuchira chiratidzo kubva mukuru kure stocking chinozunguzirwa gudzazwi pamwe yoga simba zvitengeswa. The mudziyo inogutswa pedyo tuner, uye nhaurirano chikwata anoita mamwe, zvakakodzera kuti kwayo kugadzirwa:

• mumwe potentiometer nekuwedzera fuma;
• mureza cheeky inductors L4 uye L3;
• Coils L1 uye L2 vari muchikuvadza pamusoro kukura dhairetori;
• Nhoo rakagadzirwa nesimbi nokuda mekuparadzanisa goho mumatunhu kubva chiridzwa redunhu.

Amplifiers akaisa mukati 3 metres kubva panzvimbo kanyanga iri akagadzawo DVB-T2 pamusoro waya, ayo neshamwari kuti kanyanga wire kugamuchira simba kubva wayo nechepamberi. Kana kugadzwa zviri kanyanga pedyo kutepfenyura shongwe, haisi varumbidzwa kushandisa wokuwedzera gudzazwi, somureza simba inoderedza mufananidzo uye chinopa mamwe yemagetsi mutoro pamusoro yose marongerwo. Varumbidzwa waya kureba mamita matatu, mamwe waya mutobvu kuti unbalance symmetrizer.

Application symmetrizer

Chishandiso Izvi zvakakodzera nokuti chero mhando kanyanga, hazvina kuita basa, takaita izvozvo kuti fekitari kana workshop mhizha. Kanyanga nokuti DVB-T2, nemaoko ake, unobereka zvakanaka unhu mifananidzo, kana zvakabatana kusvika tuner. Kana waya kureba 10 m, installation mamiriro kunze kusiyana simuka muchadenga uye kurwisa yacho waya. Muchiitiko chino, unoda kushandisa misoro mhinduro symmetrizer kanyanga purazi, izvo inovandudzika zvikuru unhu chidzitiro mufananidzo.

cabling uye kugadzwa kanyanga

The chikuru Kutonga ndiko kuisa kanyanga pakakwirira. Kana izvi hazvigoni kuitwa kamuri, unofanira kuita kuti mudziyo kune rusvingo rwokunze. Kuisa kanyanga mune imwe sechivako digital nhepfenyuro dzaishandisa vanovimba kukwirira midziyo 10 mamita. Kana kanyanga iri pasi reimba rokutanga, ipapo ari pedyo esimbi zvivako, maindasitiri zvinhu zvinokonzera kudzikisirana kugamuchirwa.

Kana kanyanga nzvimbo pasi nedenga kana padenga reimba kuteerera denga remba - rirege ane metallized unhani kana spraying murwiyo. Metal, chemarata, simbi foil kana kuputira pozi zvinokosha kuvhiringidzwa nokuda negashiro digitaalinen terevhizheni anonongedzera.

Nokuti mukuru kugamuchira antennas dzinongoda pamusoro simbi rechikepe kana Pin anosanganisira simbi makirisito saizi kwete mita asingasviki rimwe, iro kwakabatana kuti grounding waya. The Unit, riri padenga, anosanganisira vakawanda hurongwa musha pasi.

The waya haana asunungurwa nomukombiyuta flue uye mhepo ducts, regai vanonyatsoteerera aivapo waya magetsi, kunyange kana vanoonekwa anopfuura akachengeteka. Mumakomba masvingo ane kurereka, saka kuti mwando kubva mumugwagwa kana anopinda mumba, kushandisa plugs zviri kutengeswa. Kana kanyanga unoitwa soundly uye nemazvo, utore waya uye yepamusoro rusvingo nezvigadziko, nekuti mushure mokupedza masvingo Zvakaoma kuchinja waya pamadziro uye atsive nezvinoitika kupfuura yakavimbika.

Compliance nekuchengetedzwa panguva paungano kanyanga

Asati kugadzwa kana kubata kare vakatasva ari kanyanga pamusoro, iva nechokwadi chokuti oparesheni ichi makarwe:

• Regai vanokwira pamusoro simba uye shaky yakamisirwa chivako, kana dzemakomo basa chokuita ngozi, iva nechokwadi kuti kupfeka nokuwedzera bhandi uye pamurume mumwe yakamisirwa chikamu sechivako meimba;
• havabvumirwi abate kuguma nokuwedzera bhandi mubatsiri pasina asunga naro pachine, kana achiwira mushandi asinganyimi mumaoko uremu muviri;
• Regai vanokwira mumhu oga, icing at mazano, famba pamusoro yekare denga, danho riri unobatanidza majoini;
• Regai kuisa kanyanga mvura uye bvungapfunga.

In mhedziso, zviri nyore zvikuru kuti yako mugamuchiri kuti terevhizheni digitaalinen. DVB-T2 - kanyanga, nemaoko ake pachake - unhu (kana uchitevera kurudyi Michina) iri zvinenge zvisiri muduku pandingaunganidzira-akatenga dzomuzana. Mari nezvinhu kuchabatsira kuponesa kwayo mari, izvo zvinokosha vamwe vanhu.