COFDM Wireless Video Transmitter le Receiver
Tafole ea likateng
COFDM Wireless video transmitter le receiver Dimension
2-watt PA COFDM Wireless Video Transmitter
Size: 90x65x22mm
Likhatelo-pele tsa morao-rao ho COFDM (Coded Orthogonal Frequency Division Multiplexing) Theknoloji ea li-wireless video transmitter le e amohelang li fetotse tsela eo video e fetisoang le ho amoheloa ka eona. COFDM ke mokhoa oa ho feto-fetoha o lumellang data ea dijithale hore e fetisoe ka mefuta e mengata e fapaneng, ho fella ka lets'oao le tšepahalang haholoanyane le phetiso e ntlafalitsoeng ea data.
Re sebelisa theknoloji ea COFDM lits'ebetsong tse ngata, joalo ka thelevishene ea digital, phetiso ea video e se nang mohala, le seea-le-a digital. E boetse e fumaneha lits'ebetsong tsa sesole le tsa sefofane joalo ka likhokahano tsa sathelaete le likoloi tsa sefofane tse sa sebetsoeng.
Qetellong, tsoelo-pele ea morao-rao ho COFDM e tsamaisang video e se nang mohala le theknoloji e amohelang li fetotse tsela eo video e fetisoang le ho amoheloa ka eona.. Theknoloji ena e nolofalelitse phetisetso ea video e nang le tlhaloso e phahameng ka marang-rang a se nang mohala, hammoho le phetiso ea livideo ka marang-rang le lisebelisoa tse fapaneng. Tšebeliso ea mekhoa e tsoetseng pele ea ho khouta, joalo ka ho lokisa phoso pele (FEC) le ho feto-fetoha ha molumo, e nolofalelitse sena.
5-watt PA COFDM Wireless Video Transmitter
5-Watt PA COFDM-912T Weight
Package for one full set of the COFDM Wireless Video Transmitter
FAQ of the COFDM Wireless Video Transmitter and Receiver
Hi, Ke batla transmitter ea nako e telele ea hd e nang le hdmi input le se amohelang se nang le tlhahiso ea hdmi.
Na u ka rata a tsela e le 'ngoe kapa tsela tse pedi tsamaiso e khopo? Ha feela o hloka ho romella video, na u ntse u hloka ho romella ts'ebetso ea taolo ea drone?
Fetisetsa le ho amohela feela setsing sa ho lebela. Morero ke ho sebelisa tlhahiso ea HDMI ea taolo e hole le ho e fetisetsa bohareng. Drone e na le mokhoa oa ho fetisa marang-rang, empa ha ho na inthanete lehoatateng, kahoo re hloka ho fetisetsa hape empa eseng ka marang-rang.
OK, tharollo ea rona ea nako e telele ea phetisetso ea video e se nang mohala ke motheo oa theknoloji ea COFDM (e tšoanang le DVB-T digital TV khaso). Ha se motheong oa Marang-rang.
Na transmitter ea video e se nang mohala ea COFDM le moamoheli e na le AES 256 kapa 128 taetsitshireletso? sebopeho sa tlhahiso ke HD e felletseng?
E, COFDM-912T e tšehetsa AES 128 taetsitshireletso. Ka kopo, re tsebise ho eketsa a Parameter Configuration board bakeng sa ho beha phasewete ea AES128 ha o etsa odara. Ke boikhethelo ho reka.
Transmitter ea COFDM-912T e ts'ehetsa feela tlhahiso ea Video ea SD720P. Kahoo le haeba moamoheli a na le tlhahiso ea HDMI, ha e khone ho hlahisa video ea 'nete ea 1080P e phahameng, 720P feela.
Haeba u na le litlhoko tse phahameng haholo ho tlhaloso ea tlhahiso ea setšoantšo, Ke fana ka maikutlo a hore u khethe mohlala oo transmitter le receiver li tšehetsang 1080P, COFDM-908T
E ka fihla 30 km ho pota?
Kenyelletsong ea sistimi ea phetiso ea video e se nang mohala, libaka tsohle tsa phetisetso tse boletsoeng li ipapisitse le sebaka se bonahalang (THE). 2WPA amplifier ea matla e tšehetsa 30 lik'hilomithara 'me hangata e sebelisoa ho li-drones. Bophahamo bo phahameng haholo mme moamoheli o fatše, kahoo ho na le phapang e totobetseng ea bophahamo pakeng tsa transmitter le moamoheli, mme lets'oao la waelese le fetisoa ho latela sebopeho sa maqhubu. Tahlehelo ea lets'oao e nyane mme tšitiso e 'ngoe e nyane haholo.
U boletse hore boemo ba ts'ebeliso ea hau ke hore transmitter le moamoheli li fatše, haholo dibakeng tse lehoatata, mme ho ka ba le ditutulu tsa lehlabathe tse bidikang. Ka lebaka leo,, lets'oao le fetisoang ntle le waelese le sitisoa habonolo. Kahoo litlhahiso ke tsena:
1. Leka ho sebelisa transmitter e matla haholo, joalo ka 10 Watts kapa 20 Li-Watts. Boholo ba bareki ba rona ba likepe ba sebelisa li-transmitters tsa 20W.
2. Leka ho sebelisa antenna e phahameng kapa ho beha lenakana marulelong kapa leralleng le haufi, hape o ka eketsa tripod ea antenna. Bareki ba rona ba lula ba khetha tse ling 1.8-mitha FRP omnidirectional fiberglass antenna's.
3. Haeba maemo a dumella, e mopheta-pheta e ka boela ea eketsoa ho matlafatsa matla a lets'oao le ho eketsa sebaka sa phetiso. Ho pheta-pheta ho ka ts'oaroa sebakeng se phahameng kapa marulelong a koloi e tsamaeang.
Mokhoa oa ho kopanya mochini o fetisang mohala oa video, khamera, le betri?
Ka kopo, sheba setshwantsho tlase. 
Ho na le lihokelo tse peli tsa motlakase ho transmitter, sehokelo se sefubelu ke tlhahiso ea 12V bakeng sa khamera, 'me sehokelo se setšo ke 12V input.
Ho salla morao ke eng kapa ho lieha ho milliseconds ea COFDM-912T ea hau?
200-300ms ka kh'amera e tloaelehileng le sebali.
Khamera e tloaelehileng le skrine li na le tieho ea 200 milliseconds, le letona?
Ka rona 100 milliseconds, e mabapi le 300 ho 400.
Re boetse re na le e 'ngoe le 30 milliseconds, empa theko ke 6 linako tseo
300 li-milliseconds lia amoheleha haeba sefofane sa hau se e-na le ts'ebetso ea ho qoba litšitiso tse ikemetseng.
Ke hlokometse hore transmitter ea hau e ka tšehetsa ho fihlela 30 lik'hilomithara ho LOS. E tla tšehetsa hole hakae tikolohong ea NLOS?
Ho thata ho bolela mefuta e mengata ea tšebeliso e se nang moeli, ho ipapisitse le hore na ho na le litšitiso tse kae bohareng. Ho thata ho e fetisetsa haeba tšepe e pota-potiloeng ka ho feletseng kapa lithaba li e thibela.
Tikoloho ea teko e ikhethile, mme sebaka se fumanwang tekong le sona se fapane. Re ke ke ra etsa litiiso kapa litšepiso leha e le life mabapi le sena.
Re k'hamphani e fanang ka tharollo libakeng tse ling tsa mahaeng mona Philippines ho beha leihlo linōka tsa bona. Haeba re rekile 2W(30km SE) sebakeng sa NLOS, e ka fokotsoa ho 20km kapa ho feta?
Ho thata ho bua, e lokela ho itšetleha ka litšitiso pakeng tsa transmitter le receiver. Ha re e leke sebakeng sa hau sa ts'ebeliso, Kahoo ha ke khone ho u bolella.
Sehlahisoa se tšoanang se tla sitisoa ka tsela e fapaneng libakeng tse fapaneng, mme sebaka sa phetiso se thata ho se bolela. Ke teko ea sebele feela e tla tseba.
Moreki: Haele hantle, re kentse transceiver ea seea-le-moea e bokellang sensor ea data ebe e fetisetsa data ea eona ho 18km distance center command.. Opereishene e bonolo ebile e lokile.
Sebakeng sona seo re tla beha sesebelisoa seo re tla se reka ho uena.
Joalokaha u boletse, teko ea sebele feela e tla araba lipotso tsohle tsa ka.
Na sesebelisoa sa COFDM-912T TX se ka ntša data ea serial ka thoko?
Lintlha li ka fetisoa ka tsela e le 'ngoe feela ho tloha ho transmitter ho ea ho moamoheli.
Haeba o hloka ho fetisetsa data ka mahlakore ka bobeli, o hloka ho eketsa a telemetry ea radio ea digital. (wireless data transceiver).
Ke kopa ho tseba hore na transmitter e ka boela ea ntša data ea serial ho seo khamera e se nkang. Ntle le RF na e na le tlhahiso e arohaneng ea rs232 bakeng sa transmitter?
E, COFDM-912T e ts'ehetsa ho fetisetsa data ea seriale bakeng sa hau. Ka kopo, sheba setshwantsho tlase. 
Mojuleng ona moo nka behang khamera teng? Ke khamera ea mofuta ofe e loketseng sesebelisoa sena?
E ntšo ka ho le letšehali e bontša hanyenyane setšoantšo se ka holimo, e hokahaneng le khamera.
E ts'ehetsa kh'amera e kopaneng ea 720p CVBS ea AV. kapa leha e le efe khamera ea HDMI ka HDMI ho AV converter lebokose le reng.
How can I let the transmission still work well if I remove the menu and panel board from the receiver?
Is there any way to disable the control panel so that the receiver can see the video from the transmitter?
If I remove the control panel on the receiver, the receiver does not see the signal from the transmitter.
karabo: Please check the FAQ in the below link.
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?
I guess that you did not save the frequency, after you remove the menu on the receiver, the system will be back to the default frequency of 340Mhz. So you can not get the signal.
If GPS and TX are separated less than 1 mitha – GPS is jammed. COFDM-912T has significant noise in GPS l1 and l2 freq. Do you have any low-pass filters to solve this problem?
Hi! We did extensive testing before ordering a bigger batch. And faced issues if combining the COFDM-912T transmitter with GPS.
karabo:
1. If you buy it again, I can add a low pass filter in the transmitter inside free. I can also provide an external low-pass filter for you for free.
2. “Do you know what insertion loss is in non-filtered frequency?”, karabo: max 0.6db
3. “Do you know what dBm loss is pass frequency?” 0.4dBm
COFDM-912T Customize Development
2 Li-Watts tsa kamehla ke 595Mhz e nang le transmitter ea 1.8-meter le antenna ea ho amohela
Moreki o re boleletse lintlha tsa kopo ea hae, mochine o fetisang molaetsa le moamoheli, ka bobeli li sebelisoa fatše. Bakeng sa ho ntlafatsa sebaka sa phetiso ea waelese le ho qoba tšitiso e 'ngoe ea lets'oao, Ke khothaletsa hore li-antenna tsa transmitter le tse amohelang li sebelise li-antenna tsa fiberglass ea limithara tse 1.8..
E ne e le lekhetlo la pele moreki a nka sampole bakeng sa tlhahlobo, kahoo o ile a sebelisa seamplifier sa kamehla sa li-watt tse peli le 595 Maqhubu a MHz.
Moreki o hloka hore transmitter e be le HDMI e le hore a ka fetisetsa video e amoheloang lisebelisoa tse ling. Ka nako e tšoanang, molemong oa ho ts'ehetsa tlhahiso ea HDMI, Ke boetse ke bapisa lebokose la converter la HDMI ho CVBS RCA AV.
Moreki o kentse sesebelisoa sa ho lokisa paramethara, mosebetsi o ka sehloohong oa eona ke ho fetola maqhubu a phetisetso ea transmitter le impedance. U ka boela ua kenya phasewete ho video e fetisoang ka waelese ho patala video ea transmitter. Re tlameha ho kenya phasewete e tšoanang ho moamoheli ho khetholla video ho ntlafatsa ts'ireletso ea video.
Change COFDM Transmitter to 200 mW HASE, with a power switch of the cooling fan for body wear
Customize a video on-off switch on the COFDM Transmitter for audio-only wireless transfer.
Here is the test video for this client’s requirement, added a video on-off switch at the 10-watt PA wireless video transmitter to transfer the audio only.
Here is a video to show you that we can add one video on-off switch on the COFDM wireless video audio transmitter.
Video on, then the transmitter will transfer the video and audio at the same time.
Video off, then the transmitter will transfer the audio only.
If you have any project or need to customize the function of the wireless video transmitter and receiver, kotjwa hore o iteanye le rona.
The default power amplifier is 2-watt, we also make a 10-watt PA inside, to support long-range and transfer more extended distances.
2 Watts default 595Mhz with Yagi Directional Antenna and Omnidirectional antenna
300 Watts power amplifier modified 230Mhz COFDM wireless video transmitter and receiver
FAQs
- E, sebaka sa maqhubu se ka fetoloa ho tloha 170Mhz (molemo ho tloha 220Mhz) ho fihla ho 860Mhz. Kahoo e ka sebetsa hantle ho sehlopha sa 260Mhz.
- Maqhubu a lokela ho fetoloa hore a be a tšoanang ho transmitter le receiver. Ka lebaka, Power Amplifier le antenna frequency li lokela ho fetola maqhubu a tšoanang. (U hloka ho reka amplifier ea matla le antenna bakeng sa transmitter le receiver ho kopana le maqhubu a hau a fetotsoeng).
- Bakeng sa ho ntlafatsa kutloisiso ea ho fetisa le ho amohela, bandwidth ea maqhubu hangata e etsoa e moqotetsane haholo (maqhubu a bohareng ±15MHz, Kahoo bandwidth e lokela ho ba 30Mhz). Amplifier ea matla ea transmitter le frequency ea antenna li etselitsoe ka ho khetheha ho latela makhetlo ao u a hlokang..
- Ho molemo ha o etsa odara, ke kopa o mpolelle hore na o hloka frequency ea ho sebetsa ea mofuta ofe. Baenjineri ba rona ba tla fetola maqhubu a transmitter le moamoheli, hape u fetole PA le antenna ea tloaelo ho latela mofuta ona oa maqhubu ho netefatsa kutlo e ntle ka ho fetisisa le ho ts'ehetsa sebaka se selelele sa phetiso.
- Maqhubu a kamehla ke 590Mhz, Ka 30Mhz (+/-15MHz), u ka e fetola ntle le ho fetola Power Amplifier le antenna. Ka mohlala, 578MHz, 584MHz, 590MHz, 596MHz, le 602Mhz.
- Haeba o hloka ho fetola maqhubu a transmitter le bandwidth, o hloka sesebelisoa se khethehileng sa parameter configure board, ka kopo sheba setšoantšo se ka tlase, ha se sesebelisoa sa kamehla, ka kopo e reke ka litšenyehelo tse ling kapa ikopanye le rona pele o reka.
E, e tšehetsa ho romella video le data ea UART ho tsoa ho transmitter le receiver.
Kaha ke phetiso ea tsela e le 'ngoe, kahoo e ke ke ea romela taelo ea taolo ho tloha ho moamoheli ho ea ho transmitter.
Haeba o hloka ho romella litaelo tsa taolo kapa lintlha tse ling ho tsoa ho moamoheli ho laola lisebelisoa tse ling joalo ka lik'hamera kapa li-drones ho transmitter., o ka eketsa lisebelisoa tse theko e tlaase tsa phetiso ea dijithale, iteanye le rona, 'me re ka u etsetsa eona.
Ka kopo, sheba tlhaloso ea UART ho transmitter le moamoheli sehokelong se ka tlase. Ke kopa o mpolelle haeba o batla ho ba le thapo e etellang pele. (kamehla ke che)
Sehlahisoa sa kamehla sa Transmitter Power Amplifier ke 2 Li-Watts, kahoo e ka tšehetsa 30 KM sebakeng sa pono.
Setšoantšo se ka tlase ke sebaka sa rona se lekiloeng ho tloha thabeng ho ea lebōpong la leoatle.
Haeba u batla ho fetisetsa sebaka se selelele, o ka eketsa amplifier ea matla. Ho phaella ho watts e le 'ngoe le li-watts tse peli, re ka boela ra etsa 5 Watts, 10 Watts, le 20 watts bakeng sa khetho ea hau. Li-amplifiers tse kholo li boetse li hloka libeteri tse kholoanyane le tšehetso ea hona joale.
Bakeng sa 20W PA, phepelo ea motlakase e lokela ho ba 24 ~ 28V. Feela ho 28 li-volts li ka etsa hore amplifier ea matla e fihlelle ts'ebetso e ntle ka ho fetisisa.
Moenjiniere oa rona a ka fetola maqhubu ho 300Mhz ho tloha ho 590Mhz ea kamehla, Lenakana, le PA sebakeng sa polokelo ke 590Mhz, 300Mhz e hloka libeke tse peli ho itloaetsa, kahoo nako ea ho fana e hloka nako e telele ho feta 590Mhz ea rona ea kamehla.
Mohato 1: Ka kopo, tobetsa OK le konopo e nepahetseng ka nako e le 'ngoe, lenane la hore na o boloka le hlahella skrineng.
Mohato 2: Ka kopo tobetsa OK ho khetha Ee ho boloka.
Hopotsa, Ka kopo sebelisa antenna e kholoanyane kapa e telele haeba projeke ea hau e u lumella, e ka fumana ts'ebetso e ntle ea kamohelo mefuteng e kholoanyane.
Sete e felletseng ea kamehla
- SD Transmitter ( PA 0.5W, 1The, 2The, 5The, 10The, 20The, 50W boikhethelo ho latela tlhoko ea odara ea hau)
- SD Transmitter antenna
- HDMI CVBS e amohelang tlhahiso e nang le menu ea taolo ea parameter le skrine e nyane
- 0.8-mitha Antenna ea ho amohela 1 likhomphutha. (Ho na le mefuta e 'meli ea ho kenya kapa ho lokisa antenna: 1. antenna ea motheo ea magnetic sucker, 2. Default U-mofuta oa clamp FRP fiberglass antenna )
- boikgethelo, boto ea tlhophiso ea parameter bakeng sa transmitter ea video e se nang mohala.
(Haeba o hloka antenna ea motheo ea magnetic sucker, motho ea hlalosang kapa ea tsamaisang thepa o nahana hore lihlahisoa tsa makenete li tla kena-kenana le polokeho ea sefofane sa bona, kahoo litšenyehelo tsa ho romella li phahame ho feta antenna ea clamp ea mofuta oa U. )
Tekanyo ea sephutheloana se felletseng se felletseng
- 84*21*12CM
- Gross Weight 4.5KG
- Haeba u khetha antenna e fetang 100cm le antenna ea motheo ea magnetic sucker, Barekisi ba bang ba thepa ba tla lefisa litefiso tse eketsehileng, joalo ka litefiso tse telele tse eketsehileng le litefiso tse eketsehileng bakeng sa lintho tse matla tsa makenete.
- The transmitter parameter configures board e fapane le e ho moamoheli. The firmware ho parameter configure board e ne e fapane le transmitter le receiver, li ke ke tsa sebelisoa ka ho fapanyetsana.
- The transmitter parameter configures board e ka fetola attenuation ea lets'oao ho transmitter. Ka 0.3db e tla fokotsa 0.5W PA.
potso: Na hoa khoneha ho fetola matla a ho tsoa (ka hare PA 0,5 w Le, 1 w Le, 2 w Le) ka boto ea tlhophiso?
- Joalokaha ho arajoa ka holimo, o ka fetola matla a tlhahiso ka ho beha liparamente tsa ATTEN ka sesebelisoa sa boto ea paramethara ho transmitter.. (Sesebelisoa sena ha se kenyelle sephutheloana sa kamehla, o hloka ho tsebisa hore o batla ho ba le sesebelisoa sena ha o odara)
- Haeba u reka 2W PA, joale o ka e beha 0.5W, 1The, empa ha e khone ho e fetola ho 5W.
- Hape re ka fihla ho 5W, 10The, 20The, le 50W haeba o hloka ho ts'ehetsa nako e telele.
No.
Sesebelisoa sena sa video se se nang mohala se tšehetsa feela kh'amera ea CVBS kapa tlhahiso ea video, mofuta o mong oa khamera ea video e hloka e eketsehileng converter lebokose le reng.
No. Ke CFDM (DVB-T) theknoloji.
Kahoo lebelo la maqhubu a COFDM ke 170-860Mhz. E ka tšehetsa 477, 610, 675, 724, 816MHz, empa ha ke khone ho tšehetsa 970, 1180, 1230 MHz.
Transmitter ea rona e khethehileng ea mohlala e ka tšehetsa mefuta eohle e kaholimo, empa moamoheli o hloka ho sebelisa block ea downconverter.
E le ho lumella sistimi ea rona ea ho fetisa mohala ho ts'ehetsa mefuta e mengata e fapaneng le matla a mats'oao a betere, ka kakaretso re beha maqhubu a ts'ebetso sebakeng se itseng (170~860Mhz), 'me sebaka sa eona se tšehetsoeng se kenyelletsa feela kapa ho fokotsa 15Mhz. Ka mohlala, maqhubu a bohareng ke 590Mhz, boholo ba maqhubu a tšehetso e lokela ho ba 575Mhz ~ 605Mhz, PA le antenna li hlophisitsoe ka ho khetheha ho latela maqhubu a setsi sena.
How to add a low-pass filter chip to the transmitter?
Some customers reported that when the distance between our transmitter and the GPS antenna is less than one meter, the transmitter will interfere with the work of the GPS through the transmitting antenna.
GPS satellite signals are divided into L1 and L2, with frequencies of 1575.42MHZ and 1228MHZ respectively. Our transmitter frequency is 595Mhz by default. If we encounter this situation, we can consider adding a low-pass filter, which means frequencies below 600Mhz. Frequencies above 600 MHz can be suppressed to avoid interference with other emitting electronic products.
There are two ways to add a filter. One is to add a filter IC to the COFDM-912T transmitter board, and the other is to add a filter box outside the transmitter. The down-pass filter can suppress frequencies below a certain frequency point, and the wave-pass filter can suppress the frequencies below a certain frequency point by allowing them to pass through.
