Kubva pakatanga dhijitari yeTV, makambani enhepfenyuro akawedzera zvishoma nezvishoma simba resimba rakazara analog TV transmitters uye shandisa madhijitari eTV edhijitari zvakanyanya uye zvakanyanya nekuda kweakasiyana mabhenefiti edhijitari tekinoroji. Heino mubvunzo: Ndeapi akasiyana hunhu pakati peanalog TV transmitter uye yedhijitari TV transmitter?
Kugovera Kuchengeta!
gutsikana
Tsanangudzo yeTV Transmitter
A Muturikiri weTV chinhu chemagetsi chinovheneka masaisai eredhiyo, chinotakura chiratidzo chevhidhiyo chinomiririra mufananidzo une simba uye chiratidzo cheaudio chakawiriraniswa nacho. Ichagamuchirwa neterevhizheni inogamuchira uye inoratidza mufananidzo pahwindo uye inobudisa inzwi rinoenderana. Kushanda kwayo frequency inogumira kuVHF uye UHF frequency band, uye simba rayo rekushanda rinobva pa5W kusvika 10kW. Inowanzo shandiswa mumunda wekutepfenyura terevhizheni sezviteshi zveTV.
Vatepfenyuri veTV vanofambisa masaisai eredhiyo nenzira mbiri:
- Kutenderera kweanalog -Mufananidzo uye ruzivo rwemutsindo rwunofambiswa kuburikidza nechiratidzo cheanalog chakagadziridzwa paredhiyo inotakura. Iyo modulation mode yeodhiyo ndeyeFM uye iyo yevhidhiyo ndeye AM.
- Digital transmission - Mifananidzo nemanzwi zvinofambiswa kuburikidza nemasaini edhijitari "1" uye "0".
Idzi nzira mbiri dzekutapurirana dzinokonzera akasiyana mativi eanalog TV transmitter uye dijitari TV transmitter. Misiyano iyi ichatsanangurwa zvakadzama mune inotevera.
Musiyano pakati peAnalog & Digital TV Transmitter
Sezvambotaurwa pamusoro apa, nzira dzakasiyana dzekutumira masaini ndicho chikonzero chakakosha chemutsauko pakati peanalog TV transmitter uye yedhijitari TV transmitter mune akasiyana mativi, ayo ari kunyanya muzvikamu zvina.
Kugona kweTV chiteshi
Analog masiginecha anofanirwa kutora yakafara frequency bhendi. Pakutanga, FCC inokamura 6MHz yega yega chiteshi pakati peiyo inotenderwa frequency bhendi, uye imwe chiteshi inogara imwe chiteshi cheTV. Naizvozvo, analog TV transmitter inotepfenyura shoma shoma yeTV chiteshi.
Mushure mekugamuchirwa kwedhijitari TV transmitter, kunyangwe iyo inotenderwa frequency bhendi uye chiteshi bandwidth yakafanana kare, chiratidzo chedhijitari chinoda yakaderera bandwidth. Iye zvino chiteshi che6MHz chinogona kugarisa 3-6 TV chiteshi. Naizvozvo, iyo dhijitari TV transmitter inogona kufambisa mamwe maTV chiteshi.
Signal Transmission
Nekuti iyo analog TV transmitter inoshandisa FM modulation uye AM modulation, nepo dijitari TV transmitter inoshandisa iyo dhijitari siginecha inomiririrwa ne1 uye 0. Naizvozvo, maererano nekufambiswa kwemasaini, dijitari TV transmitter ine aya maitiro:
- Inogona kufambisa zvikwangwani pamusoro pechinhambwe chakareba pasina kukanganiswa kwechiratidzo, kuve nechokwadi chedhijitari uye ruzha rwemhando.
- Iyo Digital TV transmitter inogona kufambisa tsananguro yepamusoro vhidhiyo yemhando yemhando uye yakajeka ruzha.
- Iyo digital TV transmitter inotsigira kufambiswa kwemifananidzo yakagadziridzwa, sekuchinja kugadzirisa kwemufananidzo mune chimwe chikamu, kuwedzera mamwe mavara, animation, nezvimwe kuti upfumise mufananidzo.
Iyo digital TV transmitter inogona kufambisa mamwe anonakidza TV zvirongwa kune vateereri. Ndiyo tekinoroji yedhijitari inozivisa kutepfenyura kweTV kunopinda munguva yeHDTV.
Signal Simba
Mukutepfenyura kweanalogi, inogamuchira terevhizheni haidi simba repamusoro reredhiyo inofambiswa neanalog TV transmitter. Kunyangwe neredhiyo ine simba shoma redhiyo inogona kuridza terevhizheni inoridza mufananidzo uye ruzha, ichingoenda pamwe chete nemazaya echando uye ruzha.
Kune rimwe divi, iyo dhijitari terevhizheni inogamuchira inoda kuti chiratidzo chesimba ive pamusoro peimwe nhanho, zvino inogona kuridza mufananidzo uye ruzha. Asi kana chiratidzo chesimba chisina kukwana, pane rima rasara.
Kutenga Mari
Iyo analog TV transmitter uye analog TV haina zvakakwirira zvinodikanwa kune imwe yakakodzera michina. Vanhu vanogona kutenga seti yeanalog tv michina nemutengo wakaderera. Nekudaro, kutepfenyura kwedhijitari kune chinodiwa chepamusoro chemidziyo yakakodzera nekuda kweiyo tekinoroji yakaoma, zvinoreva kuti anoshanda nevateereri vanofanirwa kubhadhara mari yakawanda kuti vagadzirise michina yavo yeTV senge digital TV transmitter, digital TV antenna, digital TV inogamuchira, zvichingodaro. .
Nekuda kwemaitiro akasiyana ekushanda edhijitari TV transmitter uye analog TV transmitter, yakaunza akasiyana maitiro kune vanoshanda nevaoni, kusanganisira mutengo, chiratidzo chekufambisa mhando, ruzivo rwekuona, chirongwa chemukati dhizaini, zvichingodaro.
Nzira yekusarudza Yakanakisa TV Transmitter?
Paunenge uchisarudza terevhizheni yeTV, mukuwedzera pakusarudza kana iri dijiti yeTV yekuparadzira kana an analog TV transmitter, inofanirwawo kufunga nezvekushanda kwayo frequency renji, kupatsanurwa pakati peodhiyo frequency uye vhidhiyo frequency, uye bandwidth.
Zvakwana Radio Frequency
Zvinoreva iyo inowanikwa redhiyo frequency renji yeTV transmitter. Iwo maredhiyo eredhiyo anotenderwa parizvino yeTV transmitter iHF, VHF, uye UHF. Aya anotevera ndiwo ma frequency band mune zvakadzama:
- 54 kusvika 88 MHz yechiteshi 2 kusvika 6
- 174 kusvika 216 MHz chiteshi 7 kusvika 13
- 470 kusvika 890 MHz yeUHF chiteshi 14 kusvika 83
Iyo TV transmitter yaunosarudza inofanirwa kukwanisa kushanda mumabhendi matatu ari pamusoro apa.
Kupatsanurwa kwakakwirira kweAudio Frequency uye Vhidhiyo Frequency
Zvinoenderana nemutemo weUS, iyo yepakati frequency yeaural carrier inofanirwa kunge iri 4.5 MHz ± 5 kHz pamusoro peiyo frequency yeinoona inotakura pakubuda kweiyo modulating kana kugadzirisa michina yetambo terevhizheni system.tinya pano
Wide Bandwidth
Inoreva kuwanda kweredhiyo masaini anofambiswa neTV transmitter, ndiko kuti, bandwidth yaanoshandisa. Iyo yakafara bandwidth, iyo yakawanda TV chiteshi inogona kutakurwa.
Iri pamusoro ndiro hurongwa hwepasirese hwekutepfenyura hwakagadzirwa neITU, iyo yakaratidza kuti nhamba dzakanyanya kukosha dzemutapuri weTV iFrequency kupatsanurwa pakati pevanonzwa nevanoona, Radio Frequency, uye Bandwidth. Kana iwe uchida kugadzirisa kana kutenga maTV ekutumira, ndapota tsvaga mutengesi wemidziyo yekutepfenyura redhiyo akaita seFMUSER, anogona kukupa zvemhando yepamusoro, zvinodhura zvedhijitari & analog TV madhijitari uye zvine chekuita nazvo, senge ma antenna eTV zvichingodaro. Kana uchifarira, tinya pano kudzidza zvakawanda.
FMUSER CZH518A-3KW Nyanzvi VHF/UHF Analog TV Transmitter yezviteshi zveTV.
Mibvunzo Inonyanya Kubvunzwa
1. Q: Inosvika Sei paTV Transmitter Broadcast?
A: Inogona kutepfenyura chinhambwe chinotenderedza 40 - 60 mamaira.
A Muturikiri weTV inogona kufambisa pane frequency chiteshi muVHF, uye UHF mabhendi. Sezvo masaisai eredhiyo emafrequency aya achifamba nemutsara wekuona, anogona kufamba chinhambwe chemamaira makumi mana kusvika makumi matanhatu zvichienderana nehurefu hwechiteshi chekufambisa.
2. Mubvunzo: Chii Chinogona Kupindira neZviratidzo zveTV?
A: Izvo zvipingamupinyi zvakatenderedza TV transmitter zvinokanganisa kunaka kwemasaini eTV.
Kazhinji, zvipingamupinyi ndezviya pakati peshongwe dzenhepfenyuro yako yemunharaunda uye yako Over-the-Air TV antenna inogona kukanganisa zviratidzo zveTV, kusanganisira miti, makomo & mipata, zvivakwa zvikuru, zvichingodaro.
3. Mubvunzo: Zviratidzo zveTV zvinofambiswa sei?
A: Iwo anofambiswa nenzira yemasaisai eredhiyo kumhepo.
Chiratidzo cheTV chinotakurwa netambo kuenda kune antenna, iyo inowanzova pagomo refu kana chivakwa. Zviratidzo zvinotepfenyurwa nemumhepo semasaisai eredhiyo. Vanogona kufamba nemumhepo nekumhanya kwechiedza.
4. Q: Chii chinonzi Frequency Band yeTV Transmitter?
A: Inogona kutepfenyura pamabhendi eVHF neUHF.
A Muturikiri weTV inogona kufambisa muVHF uye UHF mabhendi. Aya anotevera ndiwo ma frequency band mune zvakadzama:
- 54 kusvika 88 MHz yechiteshi 2 kusvika 6
- 174 kusvika 216 MHz chiteshi 7 kusvika 13
- 470 kusvika 890 MHz yeUHF chiteshi 14 kusvika 83
mhedziso
Kutaura nezvazvo, tinoziva kuti analog TV transmitters uye dijitari TV transmitters anogona kusangana zvakasiyana zvinodiwa. Iwe unoda kutenga maTV transmitters? FMUSER mupi akavimbika wenhepfenyuro yeredhiyo michina uye mhinduro, iyo inogona kukupa iwe yakazara TV transmitter package kusanganisira analog&digital TV transmitters ari kutengeswa, anofananidzwa neTV antenna ari kutengeswa. Ndapota bata FMUSER. Isu tinoedza kuita kuti vatengi vedu vanzwe kunzwa uye kunzwisisa.
Uyewo Verenga
