COFDM Wireless yees duab Transmitter thiab Receiver
Cov Txheej Txheem
COFDM Wireless yees duab transmitter thiab receiver Dimension
2-watt PA COFDM Wireless yees duab Transmitter
Raws li cov: 90x65x22m
Cov kev kho tshiab tsis ntev los no nyob coFDM (Coded Orthogonal Frequency Division Multiplexing) wireless yees duab transmitter thiab receiver tshuab muaj transformed li cas yees duab yog transmitted thiab tau txais. COFDM yog ib tug txheej txheem modulation uas tso cai rau cov ntaub ntawv kom tau kis dua ntau hom frequencies, Ua rau muaj kev txhim khu kev qha thiab zoo tuaj cov ntaub ntawv transmission.
Peb siv COFDM tshuab nyob rau hauv ntaub ntawv heev heev, Xws li cov TV, wireless yees duab transmission, thiab cov xov tooj cua. Nws tseem pom muaj nyob rau hauv cov tub rog thiab aerospace daim ntaub ntawv xws li satellite naiskhu thiab unmanned aerial tsheb.
Thaum kawg, Tsis ntev los no kev kho tshiab hauv COFDM wireless yees duab transmitter thiab receiver tshuab muaj transformed txoj kev yees duab yog kis thiab tau txais. Lub tshuab no muaj enabled high-txhais yees duab transmission hla wireless tes hauj lwm, As Well as yees duab transmission dua ntau tes hauj lwm thiab li. Siv cov txheej txheem coding txheej txheem, Xws li rau pem hauv ntej yuam kev correction (quav hniav) thiab adaptive modulation, Muaj enabled qhov no.
5-watt PA COFDM Wireless yees duab Transmitter
5-Watt PA COFDM-912T luj
Pob rau ib daim ntawv qhia txog txheej cov COFDM Wireless yees duab Transmitter
FAQ ntawm tus COFDM Wireless yees duab Transmitter thiab Receiver
nyob zoo, Kuv tab tom nrhiav ib tug ntev-ntau yam hd yees duab transmitter nrog hdmi input thiab ib receiver nrog hdmi tso zis.
Koj puas xav tau ib tug ib-txoj kev los sis ob-txoj kev kaw lus? Tsuav koj yuav tsum xa cov yees duab, Koj tseem yuav tau xa lub lag luam tswj lub drone?
Tsuas transmit thiab tau txais nyob rau hauv ib qhov chaw yoos center. Tsab cai idea yog siv cov HDMI tso zis ntawm tej thaj chaw deb tswj thiab retransmit nws rau lub hab txhawb. Tus drone muaj ib lub kaw lus los transmit hla lub internet, Tiam sis yog tsis muaj internet nyob rau hauv cov suab puam, Li ntawd, peb yuav tsum tau retransmit tab sis tsis nrog internet.
Ua li, Peb ib-txoj kev ntev-ntau yam wireless yees duab transmission yog puag ntawm COFDM tshuab (Zoo ib yam li DVB-T cov TV broadcasting). Nws tsi muaj nyob rau puag hauv Internet.
Qhov no COFDM wireless yees duab transmitter thiab receiver muaj AES 256 los sis 128 encryption? Daim ntawv tso zis yog tag nrho hd?
Yog, COFDM-912T txhawb AES 128 encryption. Thov qhia rau peb ntxiv rau ib tug neeg ntxiv Parameter Configuration board teem cov lus zais AES128 password thaum koj tso qhov kev txiav txim. Nws yog ib qho kev xaiv yuav.
Tus COFDM-912T transmitter tsuas txhawb SD720P yees duab input. Li ntawd, txawm tias tus receiver muaj HDMI tso zis, Nws tsis tso zis tiag 1080P high-txhais yees duab, tsuas 720P.
Yog hais tias koj muaj tej yam yuav tsum tau ua nyob rau ntawm daim duab tso zis, Kuv hais rau koj xaiv ib tug qauv uas ob lub transmitter thiab receiver txhawb 1080P, COFDM-908T
Nws yuav ncav cuag 30 km nyob ib ncig ntawm?
Nyob rau hauv cov kev taw qhia txog cov wireless yees duab transmission lawv, Tag nrho cov transmission nyob deb li cas yog raws li cov pom ntau yam (POOB). Lub hwj huam 2WPA amplifier txhawb 30 kilometers thiab feem ntau yog siv rau drones. Tus altitude heev siab heev thiab cov receiver yog rau hauv av, Li ntawd, yog ib qho cuab kev qhov txawv ntawm tus transmitter thiab cov receiver, thiab cov wireless teeb liab yog kis raws li tus waveform. Lub teeb liab poob yog me me thiab lwm cuam tshuam yog me ntsis clutter.
Koj hais tias koj scenario scenario yog tias ob lub transmitter thiab receiver yog nyob rau hauv av, Tshwj xeeb tshaj yog nyob rau tej cheeb tsam suab puam, thiab tej zaum yuav tau dov xuab zeb dunes. Yog li ntawd, Lub teeb liab transmitted wirelessly yog yooj yim cuam tshuam nrog. Li no yog cov tswv yim:
1. Sim siv lub hwj huam high-power transmitter, xws li 10 Watts los yog 20 Watts. Muaj coob tus neeg muas zaub siv 20W transmitters.
2. Sim siv ib antenna los yog muab lub antenna rau lub-ru tsev los yog ib tug nyob ze toj, thiab koj kuj yuav ua tau kom tus antenna tripod. Peb cov neeg tau ib txwm xaiv ib co 1.8-meter FRP omnidirectional fiberglass antennas.
3. Yog tias mob heev, ib rov qab ua dua Kuj yuav ntxiv txhim khu lub zog thiab ua kom tus transmission nyob deb li cas. Tus repeater yuav tsau rau ib qho chaw siab los yog ntawm lub-ru tsev ntawm ib lub tsheb mus.
Yuav ua li cas los ua ke cov wireless yees duab transmitter, koob yees duab, thiab roj teeb?
Thov mus saib rau hauv qab daim duab. 
Muaj ob lub hwj huam connectors ntawm tus transmitter, Tus liab connector yog 12V tso zis rau lub koob yees duab, thiab cov connector dub yog 12V input.
Lub lag luam los yog qeeb hauv milliseconds ntawm koj COFDM-912T?
200-300MS nrog ib koob yees duab mus tsis tu ncua thiab saib xyuas.
Koob yees duab thiab tshuaj ntsuam muaj ib qeeb ntawm 200 milliseconds, Sab xis?
Nrog peb 100 milliseconds, Nws yog hais txog 300 mus 400.
Peb kuj muaj ib tug nrog 30 milliseconds, tiam sis tus nqi yog 6 lub sij hawm ntawd
300 milliseconds yog hais tias koj lub dav hlau muaj ib obstacle avoidance.
Kuv muab sau koj tus transmitter yuav txhawb tau 30 Cia li mus ua ib tug tub rog. Deb li cas yuav nws txhawb nyob rau hauv lub NLOS ib puag ncig?
Nws yog ib qho nyuaj hais ntau yam uas tsis yog-line-of-sight siv, Nws nyob ntawm seb ntau npaum li cas obstacles yog nyob nruab nrab. Nws tsis yooj yim rau transmit yog siab surrounded hlau los yog roob thaiv nws.
Qhov kev kuaj ntawd yog nws unique, thiab nyob deb li cas los ntawm qhov kev kuaj ntawd kuj txawv. Peb tsis tau ua tej guarantees los yog promises txog qhov no.
Peb yog ib lub tuam txhab uas muaj ib cov kua rau tej thaj chaw deb ntawm no nyob rau hauv lub Philippines saib lawv cov dej. Yog peb muas ib 2W(30riam) Nyob rau hauv qhov chaw NLOS, Nws yuav raug txo rau 20km los yog ntau tshaj?
Nws yog ib qho nyuaj hais, Nws yuav tsum nyob ntawm tus obstacles ntawm tus transmitter thiab receiver. Peb tsis kuaj nws nyob rau hauv koj cheeb tsam siv, Li ntawd, kuv tsis tau qhia rau koj.
Tib yam khoom yuav tau cuam tshuam nrog txawv ib puag ncig, thiab tus transmission nyob deb li cas yog ib qho nyuaj hais. Tsuas yog qhov kev kuaj ntawd xwb thiaj paub.
Buyer: ua tau, Peb tau ntsia ib xov tooj cua transceiver uas sau ib cov ntaub ntawv sensor thiab transmits nws cov ntaub ntawv rau ib 18km nyob deb li cas qhov chaw command. Lub lag luam yog smooth thiab ok.
Tib qhov chaw peb yuav muab tso rau tus ntaus ntawv uas peb yuav los ntawm koj.
Thaum koj tau hais, Tsuas yog ib qho kev kuaj ntawd xwb yuav teb tag nrho kuv cov lus nug.
Yuav tus COFDM-912T TX ntaus tso zis cais serial ntaub ntawv?
Cov ntaub ntawv yuav tsuas kis tau nyob rau hauv ib cov kev taw qhia los ntawm tus transmitter rau tus receiver.
Yog hais tias koj yuav tsum tau transmit cov ntaub ntawv nyob rau hauv ob cov lus qhia, koj yuav tsum ntxiv ib tug xov tooj cua telemetry. (wireless cov ntaub ntawv transceiver).
Kuv xav paub tias yog tus transmitter kuj tso zis serial ntaub ntawv rau dab tsi lub koob yees duab yog capturing. Lwm yam uas tsis yog RF puas muaj ib cais rs232 tso zis rau cov transmitter?
Yog, COFDM-912T txhawb transferring cov ntaub ntawv serial rau koj. Thov mus saib rau hauv qab daim duab. 
Nyob rau hauv no module uas kuv yuav muab tso rau lub koob yees duab? Hom koob yees duab yog suited rau no ntaus ntawv?
Tus dub ib sab laug qhia tau hais tias me ntsis saum daim duab saum toj no, uas yog txuas nrog lub koob yees duab.
Nws txhawb ib 720p CVBS composite AV koob yees duab. LOS yog tej HDMI koob yees duab los ntawm HDMI rau AV converter box.
Cas kuv yuav cia tus transmission tseem ua hauj lwm zoo yog hais tias kuv tshem cov zaub mov thiab vaj huam sib luag board ntawm tus receiver?
Yog muaj ib txoj kev los disable lub vaj huam sib luag kom tus receiver yuav pom cov yees duab los ntawm tus transmitter?
Yog hais tias kuv tshem cov tswj vaj huam sib luag rau lub receiver, Tus receiver tsis pom lub teeb liab ntawm tus transmitter.
Teb: Thov xyuas cov FAQ hauv qab no txuas.
https://ivcan.com/p/cofdm-video-transmitter-receiver-av-in-hdmi-out/#accordion-item-6._i_have_changed_the_parameter_on_the_configure_board_tool,_why_it_is_not_saving_when_i_restart?
Kuv twv tias koj yeej tsis txuag lub frequency, Tom qab koj tshem cov zaub mov rau lub receiver, Lawv yuav rov qab mus rau lub default frequency ntawm 340Mhz. Li ntawd, koj yuav tsis tau lub teeb liab.
Yog GPS thiab TX yog muab cais tsawg tshaj li 1 ' meter ' – GPS yog jammed. COFDM-912T muaj teeb meem loj nrov hauv GPS l1 thiab l2 freq. Koj puas muaj tej filters uas yuav daws tau qhov teeb meem no?
nyob zoo! Peb puas tau kim heev kuaj ua ntej ordering ib batch loj batch. Thiab muag teeb meem yog combining tus COFDM-912T transmitter nrog GPS.
Teb:
1. Yog hais tias koj yuav rov qab dua, Kuv yuav ntxiv ib lub limtiam uas tsis muaj lim dej hauv lub transmitter hauv dawb. Kuv kuj muab ib qho lwm low-pass filter rau koj dawb.
2. “Koj puas paub dab tsi insertion poob yog nyob rau hauv cov-filtered zaus?”, Teb: max 0.6db
3. “Koj puas paub tias dBm poob yog kis tau zaus dua?” 0.4dbm
COFDM-912T Customize Development
2 Watts default 595Mhz nrog 1.8-meter transmitter thiab receiver antenna
Tus neeg tau hais rau peb tias nws daim ntawv thov kom paub meej, tus transmitter thiab receiver, ob leeg siv rau hauv av. Yuav kom txhim khu cov wireless transmission nyob deb li cas thiab tsis txhob lwm yam teeb liab cuam tshuam, Kuv xav tias ob lub transmitter thiab receiver antennas siv 1.8-meter fiberglass antennas.
Yog thawj thawj zaug cov neeg muab cov qauv rau kev kuaj ntawd, Ces nws siv cov default ob-watt amplifier thiab 595 MHz frequency.
Cov neeg muas zaub yuav tsum tau tias tus transmitter muaj ib qho HDMI tso zis kom nws yuav transmit tus tau txais yees duab rau lwm li lawm. Tib lub sijhawm, yuav txhawb HDMI input, Kuv kuj matched ib HDMI rau CVBS RCA AV converter thawv.
Cov neeg muas zaub tau ntxiv ib qho kev xaiv parameter kho kom haum, Lub ntsiab muaj nuj nqi uas yog hloov tus transmitter transmission frequency thiab impedance. Koj kuj ntxiv ib password rau lub wirelessly transmitted yees duab los encrypt tus yees duab ntawm tus transmitter. Peb yuav tsum sau tib lo lus zais rau tus receiver los decode tus yees duab kom zoo ruaj ntseg ntawm cov yees duab.
Hloov COFDM Transmitter rau 200 mW PA, Nrog lub hwj huam hloov ntawm tus kiv cua txias rau lub cev hnav
Customize tus yees duab on-off hloov ntawm tus COFDM Transmitter rau audio-tsuas wireless hloov.
Ntawm no yog qhov kev kuaj ntawd yees duab rau tus neeg tau txais kev pab yuav tsum tau, Ntxiv ib tug yees duab on-off hloov ntawm lub 10-watt PA wireless yees duab transmitter hloov mus rau lub suab xwb.
Ntawm no yog ib tug yees duab los qhia koj tias peb yuav ntxiv ib tug yees duab on-off hloov ntawm lub COFDM wireless yees duab audio transmitter.
Yees duab rau, Ces tus transmitter yuav hloov cov yees duab thiab audio tib lub sijhawm.
Yees duab tawm, Ces tus transmitter yuav hloov lub suab xwb.
Yog hais tias koj muaj peb tes num los yog yuav tsum tau customize lub function ntawm tus wireless yees duab transmitter thiab receiver, thov hu rau peb.
Lub hwj huam default amplifier yog 2-watt, Peb kuj ua ib 10-watt PA hauv, txhawb kev them nyiaj yug mus sij hawm ntev thiab hloov mus ntxiv nyob deb li cas.
2 Watts default 595Mhz nrog Yagi Directional Antenna thiab Omnidirectional antenna
300 Watts hwj huam amplifier hloov 230Mhz COFDM wireless yees duab transmitter thiab receiver
FAQs
- Yog, Cov zauv ntau yam yuav tau hloov ntawm 170Mhz (Zoo ntawm 220Mhz) rau 860Mhz. Li ntawd, nws yuav ua hauj lwm zoo ntawm 260Mhz qhab.
- Qhov frequency yuav tsum tau hloov mus rau tib yam rau cov transmitter thiab receiver. ua kom muaj kev ua kom muaj, Lub hwj huam Amplifier thiab antenna frequency yuav tsum hloov tib zaus. (Koj yuav tau mus yuav ib lub hwj huam amplifier thiab antenna rau lub transmitter thiab receiver kom tau raws li koj hloov zaus).
- Yuav kom cov rhiab ntawm transmitting thiab tau txais, Cov frequency bandwidth feem ntau ua nqaim heev (qhov chaw ±15Mhz, Li ntawd, bandwidth yuav tsum tau 30Mhz). Lub hwj huam amplifier ntawm tus transmitter thiab cov frequency ntawm tus antenna yog tshwj xeeb tshaj yog customized raws li tus frequency koj xav tau.
- Nws zoo tshaj plaws thaum koj muab ib qho kev txiav txim, thov qhia kuv seb koj ua hauj lwm zoo li cas uas koj xav tau. Peb engineers yuav hloov lub frequency ntawm tus transmitter thiab receiver, thiab kuj hloov cov PA thiab kev lis kev cai antenna raws li no zaus ntau yam Xyuas kom meej tias qhov zoo tshaj plaws thiab txhawb qhov ntev transmission nyob deb li cas.
- Tus default frequency yog 590Mhz, Nrog 30Mhz (+/-15Mhz), Koj yuav hloov nws tsis modifying lub hwj huam Amplifier thiab antenna. Piv txwv, 578Mhz, 584Mhz, 590Mhz, 596Mhz, thiab 602Mhz.
- Yog hais tias koj yuav tsum tau hloov tus transmitter frequency thiab bandwidth, Koj xav tau ib tug tshwj xeeb ntawm lub parameter configure board, thov saib daim duab hauv qab no, Nws tsi muaj ib tug default accessory, Thov yuav nws ntawm tus nqi ntxiv los yog hu rau peb ua ntej yuav txiav txim.
Yog, Nws txhawb xa cov yees duab thiab UART cov ntaub ntawv Ntawm tus transmitter thiab receiver.
Thaum nws yog ib txoj kev transmission, Li ntawd, nws yuav tsis xa tus tswj command ntawm tus receiver rau lub transmitter.
Yog hais tias koj yuav tsum xa tswj commands los yog lwm cov ntaub ntawv los ntawm tus receiver los tswj lwm yam li koob yees duab los yog drones ntawm tus transmitter, Koj yuav ntxiv ib txheej pheej yig transmission khoom, hu rau peb, thiab peb yuav customize nws rau koj.
Thov xyuas cov UART txhais ntawm tus transmitter thiab receiver ntawm qhov txuas hauv qab no. Thov qhia rau kuv yog hais tias koj xav kom muaj ib cov hlau lead cable. (tsis muaj)
Tus transmitter default Power Amplifier yog 2 Watts, Li ntawd, nws yuav txhawb tau 30 KM ntawm line-of-sight.
Cov duab hauv qab no yog peb kuaj nyob deb li cas ntawm lub roob rau lub seaside.
Yog hais tias koj xav transmit ntau yam ntev, Koj yuav ua tau kom lub hwj huam amplifier. Ntxiv rau ib watt thiab ob watts, Peb kuj ua tau 5 watts, 10 watts, thiab 20 watts rau koj xaiv. Loj amplifiers kuj yuav tsum tau loj roj teeb thiab tam sim no txhawb.
Rau 20W PA, Lub hwj huam mov yuav tsum muaj 24.28V. Tsuas yog thaum kawg xwb 28 volts yuav lub hwj huam amplifier cuag qhov zoo tshaj plaws ua hauj lwm.
Peb engineer yuav hloov cov frequency rau 300Mhz ntawm tus default 590Mhz, Tus antenna, Thiab PA hauv lub warehouse yog 590Mhz, 300Mhz xav tau ob lub lis piam rau customize, Li ntawd, tus me nyuam lub sij hawm yuav tsum tau ntev dua peb default 590Mhz.
kauj ruam 1: Thov nias ok thiab txoj cai khawm tib lub sijhawm, Ib tug txiv neej uas yuav txuag tau tshwm rau ntawm qhov screen.
kauj ruam 2: Thov xovxwm OK xaiv Yes txuag tau.
nco ntsoov qhia, Thov siv qhov loj los yog ntev dua antenna yog hais tias koj qhov project tso cai, Nws yuav tau txais tos txais tos kev kawm nyob rau hauv cov ntau yam loj.
Lub default daim ntawv qhia txog teev
- SD Transmitter ( PA 0.5W, 1W, 2W, 5W, 10W, 20W, 50W xaiv raws li koj qhov kev txiav txim thov)
- SD Transmitter antenna
- HDMI CVBS tso zis receiver nrog parameter tswj zaub mov thiab me me screen
- 0.8-meter receiver antenna 1 pcs. (Muaj ob hom installing los yog kho cov antenna: 1. magnetic sucker puag antenna, 2. Default U-hom clamp FRP fiberglass antenna )
- Yeem, parameter configuration board rau lub wireless yees duab transmitter.
(Yog hais tias koj xav tau ib tug magnetic sucker puag antenna, Tus qhia los yog carrier xav tias cov khoom magnetic yuav cuam tshuam nrog lawv lub dav hlau kev ruaj ntseg, Li ntawd, tus nqi shipping yog ntau tshaj ib U-hom clamp antenna. )
Tus default daim ntawv qhia txog teev pob dimension
- 84*21*12CM
- Tag nrho luj 4.5KG
- Yog hais tias koj xaiv tshaj 100cm antenna thiab magnetic sucker puag antenna, Ib txhia freight forwarders yuav them nqi ntxiv, Xws li cov nqi ntxiv thiab cov nqi ntxiv rau cov khoom magnetic khoom.
- Tus transmitter parameter configures board yog txawv ntawm ib tus receiver. Qhov ruaj rau lub parameter configure board yog txawv ntawm tus transmitter thiab receiver, Lawv tsis tau siv interchangeably.
- Tus transmitter parameter configures board yuav kho tau lub teeb liab attenuation rau lub transmitter. Ib 0.3db yuav txo tau qhov 0.5W PA.
Lus nug: Tej zaum yuav hloov lub hwj huam outpout (paj thoob ntiaj teb 0,5 w, 1 w, 2 w) Ntawm lub rooj tswjhwm saib cov configuration?
- Teb saum toj no, Koj yuav kho tau cov zis tso zis los teev cov parameters ntawm ATTEN los ntawm cov parameter configuration board tool rau lub transmitter. (Qhov no tsis muaj xws li cov pob default pob, Koj yuav tsum qhia rau koj paub tias koj xav kom muaj cov cuab yeej no thaum koj txiav txim)
- Yog hais tias koj yuav 2W PA, Ces koj yuav teem nws 0.5W, 1W, Tiam sis yuav tsis hloov nws mus rau 5W.
- Peb kuj yuav ua rau 5W, 10W, 20W, thiab 50W yog hais tias koj xav tau kev pab txhawb mus sij hawm ntev.
Tsis muaj.
No wireless yees duab transmitter tsuas txhawb CVBS koob yees duab los yog yees duab input, Lwm hom yees duab yees duab xav tau ib lub thawv converter ntxiv.
Tsis muaj. Nws yog COFDM (DVB-T) Tej txuj ci tshiab.
Li ntawd, cov COFDM frequency ntau yam yog 170-860Mhz. Nws yuav txhawb tau kev them nyiaj yug me nyuam 477, 610, 675, 724, 816Mhz, tab sis yuav tsis txhawb 970, 1180, 1230 Mhz.
Peb tus qauv tshwj xeeb transmitter yuav txhawb tag nrho cov saum toj no ntau yam, Tiam sis tus receiver yuav tsum siv cov downconverter thaiv.
Thiaj li yuav cia peb wireless transmitting lawv txhawb ib wider ntau yam thiab zoo teeb liab lub zog, Peb feem ntau teem cov kev khiav hauj lwm frequency rau ib kis (170£860Mhz), Thiab nws txaus siab ntau yam yog tsuas plus los yog rho tawm 15Mhz. Piv txwv, Qhov chaw frequency yog 590Mhz, max kev them nyiaj yug frequency ntau yam yuav tsum tau 575Mhz$605Mhz, Cov PA thiab antenna yog tshwj xeeb tshaj yog customized raws li qhov chaw no zaus.
Yuav ua li cas ntxiv ib lub limtiam uas tsis muaj lim nti rau lub transmitter?
Ib txhia neeg muas zaub qhia tias thaum tus nyob deb li cas ntawm peb transmitter thiab cov GPS antenna yog tsawg tshaj li ib meter, Tus transmitter yuav cuam tshuam nrog qhov chaw ua hauj lwm ntawm lub GPS los ntawm tus transmitting antenna.
GPS satellite teeb liab yog faib ua L1 thiab L2, Nrog frequencies ntawm 1575.42MHZ thiab 1228MHZ feem. Peb transmitter frequency yog 595Mhz los ntawm default. Yog peb pom tias qhov teeb meem no, Peb yuav xav ntxiv ib filter tsawg-kis filter, Nws txhais tau tias frequencies hauv qab 600Mhz. Zauv saum toj no 600 MHz yuav tau suppressed kom tsis txhob cuam tshuam nrog lwm emitting electronic khoom.
Muaj ob txoj kev ntxiv ib filter. Ib tug ntxiv ib lim dej IC rau lub COFDM-912T transmitter board, thiab lwm yam yog ntxiv ib lub thawv lim dej sab nraum lub transmitter. Lub down-pass filter yuav suppress frequencies hauv qab ib yam frequency taw tes, thiab cov yoj-dhau filter yuav suppress lub frequencies hauv qab no ib yam frequency taw tes los ntawm tas lawv kis tau los ntawm.
