Qaadashada Furaha
- Anteenooyinka HDTV-ga waxay helayaan calaamadaha baahinta hawada sare ee xarumaha TV-ga maxalliga ah.
- Calaamadahaan waxaa sida caadiga ah lagu sii daayaa xargaha UHF ama VHF.
- Anteenada waxaa la dhigayaa meel si ay u helaan calaamadaha.
- Anteenadu waxay u beddeshaa signalka RF-ga signalka dhijitaalka ah.
- Calaamadda dhijitaalka ah waxaa lagu soo bandhigay TV-ga si sawir heersare ah loo eego.
Sidee bay anteenooyinka HDTV u shaqeeyaan?
Anteenooyinka HDTV waxaa loogu talagalay inay helaan calaamado telefishin oo qeexan sare. Anteenooyinkani waxay ku shaqeeyaan inay qabtaan mowjadaha elektromagnetic-ka ee ay sii daayaan telefishinada oo ku dhex safraya hawada. Anteenadu waxay door muhiim ah ka ciyaartaa habka helitaanka iyo u beddelka calaamadahan calaamadaha korantada ee laga baaraandegi karo oo lagu soo bandhigi karo telefishin ama decoder.
Tallaabada 1: Dhigista anteenada
Talaabada ugu horeysa ee samaynta anteenada HDTV waa in la helo meel ugu fiican. Anteenadu waxay u baahan tahay in la dhigo meel ay si hufan uga heli karto calaamadaha TV-yada maxalliga ah. Waxyaabaha ay ka midka yihiin masaafada u jirta xarunta telefishinka, joogga anteenada, iyo joogitaanka caqabadaha ayaa saameyn ku yeelan kara waxtarka anteenada.
Markaad hesho goobta saxda ah, waxaad xaqiijin kartaa soo dhawayn wanaagsan oo ah calaamadaha baahinta.
Tallaabada 2: Helitaanka signalka baahinta
Marka anteenadu meesha taal, waxay bilaabataa inay hesho signalka baahinta. Calaamaduhu waa calaamada soo noqnoqoshada raadiyaha (RF) ee xanbaarsan nuxurka telefishinka. Naqshadaynta anteenadu waxay u oggolaanaysaa inay qabato calaamadaha RF-ga oo ay u beddesho calaamado koronto oo si dheeraad ah loo sii wadi karo.
Talaabada 3: Diritaanka signalka tunerka TV-ga
Calaamadda RF ee ay anteenadu hesho ayaa markaa loo diraa qalabeeyaha TV-ga. Qalabka TV-ga waxaa lagu dhex dhisi karaa telefiishanka laftiisa ama qalab gooni ah. Shaqadeeda aasaasiga ah waa inay u beddesho calaamadda RF si ay u noqoto calaamad dhijitaal ah oo lagu soo bandhigi karo TV-ga.
Habka beddeliddani waa lama huraan si loo hubiyo iswaafajinta u dhexeeya signalka anteenada iyo awooda bandhigga telefishinka.
Tallaabada 4: U beddelashada signalka dhijitaalka ah
Marka signalka RF uu gaaro tuner-ka TV-ga, waxa uu maraa habka beddelka. Qalabka TV-ga ayaa u beddela calaamadda RF-ga calaamad dhijitaal ah oo uu taleefishinku fahmi karo oo muujin karo. Beddelkaani wuxuu u oggolaanayaa gudbinta nuxurka qeexitaanka sare, isagoo siinaya sawir cad oo faahfaahsan shaashadda TV-ga.
Tallaabada 5: Muujinta sawirka qeexitaanka sare
Ka dib marka la sameeyo calaamada dhijitaalka ah, waxaa loo diraa bandhigga TV-ga. Shaashadda, hadday tahay LCD, LED, ama OLED, waxay qaadataa calaamadda dhijitaalka ah waxayna u beddeshaa sawir qeexid sare leh.
Nidaamkani waxa uu ku lug leeyahay khariidadeynta macluumaadka dhijitaalka ah ee loo yaqaan pixels ee ku habboon shaashadda, taasoo keentay muuqaal soo jiidasho leh oo faahfaahsan.
Fadlan ogow in tayada sawirka aad anteenada HDTV ku heleyso ay kala duwanaan karto. Dhowr arrimood ayaa saameeya tayada sawirka, oo ay ku jiraan xoogga signalka baahinta, tayada anteenada, iyo masaafada u dhaxaysa anteenada iyo xarunta TV-ga.
Si aad u wanaajiso soo dhaweynta ishaarada, waxaa laga yaabaa inaad u baahato inaad hagaajiso booska anteenada ama aad tixgeliso inaad isticmaasho anteeno tayo sare leh.
Noocyada anteenooyinka HDTV
Anteenooyinka HDTV waxay ku yimaadaan noocyo kala duwan, oo ay ku jiraan anteenooyinka gudaha iyo dibadda. Doorashada anteenadu waxay ku xidhan tahay arrimo kala duwan, sida goobtaada, u dhowaanshaha xarumaha TV-ga, iyo deegaanka ku xeeran.
Waa kuwan labada nooc ee ugu waaweyn anteenooyinka HDTV:
1. Anteenooyinka gudaha
Anteenooyinka gudaha waxaa loogu talagalay in la dhigo gurigaaga gudihiisa, sida caadiga ah meel u dhow daaqadda ama meel sare. Waa kuwo is haysta oo sahlan in la rakibo, taas oo ka dhigaysa doorasho caan ah meelaha magaalooyinka ama meelaha leh calaamadaha baahinta xooggan.
Anteenooyinka gudaha waxay ku habboon yihiin in laga helo calaamadaha TV-yada u dhow, laakiin waxtarkoodu wuu yaraan karaa haddii ay jiraan caqabado sida dhismayaasha dhaadheer ama caleenta cufan.
2. Anteenooyinka dibadda
Anteenooyinka dibadda ayaa lagu rakibay meel ka baxsan gurigaaga, badanaa saqafka sare ama qaab dhismeed sare leh. Way ka weyn yihiin kana xoog badan yihiin anteenooyinka gudaha, taas oo u oggolaanaysa in si fiican loo soo dhaweeyo calaamadaha masaafo dheer.
Anteenooyinka dibadda waxay ku habboon yihiin aagagga leh calaamadaha baahinta daciifka ah ama marka xarumaha TV-gu ay fog yihiin.
Waxay ka gudbi karaan caqabadaha iyo faragelinta si wax ku ool ah, taasoo keenta calaamad xooggan oo la isku halleyn karo.
Anteenooyinka HDTV waxay door muhiim ah ka ciyaaraan helitaanka calaamadaha telefishinka ee qeexan sare. Qabashada mowjadaha elektromagneticiga ah ee ay sii daayaan TV-yadu, anteenooyinkani waxay calaamadaha u beddelaan calaamado koronto oo la farsamayn karo oo lagu soo bandhigi karo telefishin ama decoder.
Meelaynta anteenada, soo dhawaynta signalka baahinta, iyo u beddelashada signalka dhijitaalka ah ayaa ah tillaabooyinka muhiimka ah ee samaynta anteenada HDTV si hufan u shaqaynaysa.
Haddii aad dooratid anteeno gudaha ah ama dibadda ah, hagaajinta soo dhaweynta calaamaduhu waxay kor u qaadi kartaa tayada sawirka sare ee aad hesho.
Markaa, hel meesha saxda ah, tixgeli nooca anteenada, oo ku raaxayso faa'iidooyinka telefishinnada hawada lagu sii daayo ee bilaashka ah.
Xiriirinta iyo tixraacyada
- TV Antennas and Good Reception Guide (FCC)
- User Guide for Philips Amplified HD Digital TV Antenna (Amazon)
- User Manual for Philips Amplified HD Digital TV Antenna (Amazon)
- RCA HDTV Antenna Amplifier Manual
- HG-995 Outdoor Antenna Instruction Manual
- HDTV Antenna Design Theory PDF
- Digital TV Coat Hanger Antenna PDF
Maqaalkayga mowduuca:
In this article waxaan ka jawaabaa su'aalo caadi ah oo ku saabsan MPEG, oo ay ku jiraan waxa ay tahay, sida ay u shaqeyso, iyo faa'iidooyinkeeda:
Su'aalaha soo noqnoqda ee ku saabsan mpeg