COFDM ni iYaya ni Vidio kei na iCiqociqo
iTuvatuva ni Lewena
COFDM wireless ni vakau vidio kei na iciqociqo Dimension
2-watt PA COFDM Wireless Video Transmitter
Kena levu: 90x65x22mm
Na toso wale tikoga oqo ena COFDM (Mataqali Veitaratara ni Orthogonal Wase Vakacakacaka) isema ni vidio isema kei na tekinolaji ni ciqoma sa veisautaka na ivakarau ni kena vakau ka ciqomi na vidio. Na COFDM e dua na iwalewale ni modulation ka rawa kina na itukutuku vakalivaliva me vakau ena dua na ivakarau rabailevu, ka yaco kina e dua na sikinala nuitaki ka vakavinakataki cake na itukutuku ni vakadewataki.
We use COFDM technology in numerous applications, such as digital television, vakau vidio isema, kei na retio vakalivaliva. E kune talega ena ivolakerekere ni mataivalu kei na aerospace me vaka na veitaratara ni setilaiti kei na lori waqavuka sega ni kau.
Kena itinitini, toso wale tikoga oqo ena COFDM isema ni vidio vakadewataki kei na iciqociqo tekinolaji sa veisautaka na ivakarau ni kena vakau ka ciqomi na vidio. Na tekinolaji oqo sa rawa kina na kena vakadewataki vakavinaka na vidio ena veisemati isema, ka vakakina na vidio ni vakau ena veimataqali ilawalawa vakacakacaka kei na gacagaca. Na vakayagataki ni iwalewale ni coding torocake, me vakataka na vakadodonutaki ni cala e liu (FEC) kei na modulation vakamatautaki, sa rawa kina vei.
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
Bula, Au vaqara tiko e dua na icurucuru ni vidio hd balavu ena hdmi input kei na dua na iciqociqo e tiko kina na hdmi output.
O na vinakata beka e dua na dua ga na sala se rua na sala ivakarau ni? Ena gauna ga o gadreva mo vakauta kina na vidio, o se gadreva tikoga mo vakauta na veiliutaki ni drone?
Vakauta ga ka ciqomi ena dua na valenivolavola ni vakaraici. The idea is to use the HDMI output of the remote control and retransmit it to the central. E tiko na ivakarau ni drone me vakau ena initaneti, ia e sega na initaneti ena vanua dravuisiga, ka sa gadrevi kina meda vakadewataka tale ia e sega ena initaneti.
OK, na noda iwali ni vidio isema ni dua ga na sala sa ikoya na yavu ni COFDM tekinolaji (tautauvata kei na DVB-T kakaburaki ena TV livaliva). E sega ni tiko ena yavu ni Initaneti.
E tiko beka na COFDM isema ni vidio transmitter kei na iciqociqo ni AES 256 se 128 kena sosomuni? na ituvatuva ni output e taucoko na hd?
Io, COFDM-912T tokona na AES 128 kena sosomuni. Yalovinaka tukuna vei keitou me vakaikuritaki e dua na Matabose ni Configuration ni iTuvatuva me baleta na kena tuvanaki na vosanicuru ni AES128 ni ko sa biuta tiko na ota. E sega ni gadrevi me voli.
Na COFDM-912T transmitter e tokona walega na SD720P ni vidio. Kevaka sara mada ga e tiko vei koya e ciqoma na HDMI output, e sega ni rawa ni output dina na vidio ni ivakamacala cecere ni 1080P, 720P walega.
Kevaka e cecere sara na nomu gagadre ena ivakamacala ni kena icurucuru na iyaloyalo, Au vakatura mo digitaka e dua na ivakaraitaki ka tokona ruarua na iyaya ni vakau kei na iciqociqo na 1080P, COFDM-908T
E rawa beka ni yacova na 30 km wavokita?
Ena kena vakaveikilaitaki na ivakarau ni vakau vidio isema, na yawa kece ni retioyaloyalo ka tukuni tiko era yavutaki ena kena laurai (LOS). Na 2WPA kaukauwa ni vakaukauwataki e tokona na 30 kilomita ka dau vakayagataki ena waqavuka. E cecere sara na balavu ka sa tu e qele na iciqociqo, ka sa matata tu kina na duidui cecere ena kedrau maliwa na dauvakauta kei na iciqociqo, ka sa vakau yani na sikinala isema me vaka na ua. E lailai na sikinala ni yali ka lailai sara na veivakataotaki tale eso.
O tukuna ni nomu ivakarau ni vakayagataki sai koya ni sa tu ruarua e ra na ivakadewa kei na iciqociqo, vakabibi ena veivanua dravuisiga, ka na rairai tiko beka na veitobu nuku. O koya gona, na sikinala e vakau vakawelewele e rawarawa sara na vakataotaki ena. Oqo na vakatutu:
1. Tovolea mo vakayagataka e dua na dauvakau livaliva cecere, me vaka 10 Watts se 20 Watts. E vuqa vei ira na noda kasitama era vakayagataka na iyaya ni vakau 20W.
2. Tovolea mo vakayagataka e dua na antenna cecere se biuta na antenna ena delavuvu se dua na delana voleka, ka rawa talega ni o vakalevutaka na antenna tripod. O ira na noda itokani era dau digitaka eso 1.8-meter FRP fiberglass fiberglasss.
3. Kevaka e vakatara na ituvaki, E DUA daukaruataka e rawa talega ni vakuri me vakavinakataka cake na kaukauwa ni sikinala ka vakalevutaka na yawa ni retioyaloyalo. Na dau tokaruataki e rawa ni vakavinakataki ena dua na vanua cecere se ena delavuvu ni dua na motoka toso.
Na sala me vakasoqoni vata kina na iyaya ni vakau vidio isema, na itaba, kei na batiri?
Yalovinaka dikeva na iyaloyalo e ra. 
E rua tiko na isema kaukauwa ena ivakauta, na isema damudamu e 12V output me baleta na itaba veilawa, kei na isema loaloa e 12V na icurucuru.
What is the lag or delay in milliseconds of your COFDM-912T?
200-300ms with a regular camera and monitor.
Normal camera and screen have a delay of 200 iroini vakasigauna, iMatau?
With our 100 iroini vakasigauna, it’s about 300 me 400.
We also have one with 30 iroini vakasigauna, but the price is 6 times that
300 milliseconds is acceptable if your plane has an automatic obstacle avoidance function.
I noted your transmitter can support up to 30 kilometers in LOS. How far will it support in the NLOS environment?
It’s hard to say the range of non-line-of-sight use, it depends on how many obstacles are in the middle. It is difficult to transmit if fully surrounded metal or mountains block it.
The test environment is unique, and the distance obtained from the test is also different. We can’t make any guarantees or promises about this.
We are a company that offers a solution to some rural areas here in the Philippines to monitor their rivers. If we purchased a 2W(30kilomita) in the NLOS location, it could be reduced to 20km or more?
It is hard to say, it should depend on the obstacles between the transmitter and receiver. We don’t test it in your use environment, So I can’t tell you.
The same product will be interfered with differently in different environments, and the transmission distance is hard to say. Only the actual test will know.
Buyer: Actually, we have installed a radio transceiver that gathers a data sensor and transmits its data to an 18km distance center command. The operation is smooth and ok.
The same place we’re going to put up the device that we will buy from you.
As you have said, only an actual test will answer all of my questions.
Can the COFDM-912T TX device output separate serial data?
Data can only be transmitted in one direction from the transmitter to the receiver.
If you need to transmit data in both directions, you need to add a digital radio telemetry. (wireless data transceiver).
I would like to know if the transmitter can also output serial data on what the camera is capturing. Other than RF does it have a separate rs232 output for the transmitter?
Io, COFDM-912T supports transferring the serial data for you. Yalovinaka dikeva na iyaloyalo e ra. 
In this module where I can put up the camera? What type of camera is suited for this device?
The black one on the left shows a little bit of the above picture, which is connected to the camera.
It supports a 720p CVBS composite AV camera. or any HDMI camera by HDMI to AV converter box.
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.
Na kena isau: 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 mita – 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?
Bula! We did extensive testing before ordering a bigger batch. And faced issues if combining the COFDM-912T transmitter with GPS.
Na kena isau:
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?”, Na kena isau: max 0.6db
3. “Do you know what dBm loss is pass frequency?” 0.4dBm
COFDM-912T Customize vakatorocaketaki
2 Watts sega ni 595Mhz ena 1.8 na mita ni transmitter kei na iciqociqo ena
A tukuna vei keitou na dauvolivoli ni veika matailalai ni nona kerekere, the transmitter and receiver, are both used on the ground. Me rawa ni vakavinakataki cake na yawa ni isema ni vakauitukutuku ka levea na veivakataotaki tale eso ni sikinala, I recommend that both the transmitter and receiver antennas use 1.8-meter fiberglass antennas.
Oqo na imatai ni gauna a taura kina na kasitama na sabolo ni vakatovotovo, ka sa vakayagataka kina na kena vakaukauwataki e rua na watt ka 595 Ivakarau ni MHz.
E gadreva na kasitama me tiko vua na transmitter e dua na HDMI output me rawa ni vakauta kina na vidio ciqomi ki na gacagaca tale eso. Ena gauna vata o ya, me rawa ni tokona na hDMI na icurucuru, Au sa veidonui talega kei na dua na kato ni HDMI ki na CVBS RCA AV converter.
Sa vakuria na kasitama e dua na iyaya ni veisau ni ivakarau, na itavi levu duadua oya me veisautaka na kena ivakarau kei na impedance ni iyaya ni vakau. E rawa talega ni o vakuria e dua na vosanicuru ki na vidio ni vakau isema me encrypt na vidio ni transmitter. We must enter the same password on the receiver to decode the video to improve the security of the video.
Change COFDM Transmitter to 200 mW PA, 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, yalovinaka veitaratara mai vei keitou.
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
YVT
- Io, na ivakarau ni kena ivakarau e rawa ni veisautaki mai na 170Mhz (vinaka cake mai na 220Mhz) ki na 860Mhz. Sa rawa ni cakacaka vinaka ena 260Mhz na mataivakatagi.
- E dodonu me na veisau na kena gauna me tautauvata ena misini kei na dauciqociqo. Ena vuku ni inaki, na gauna e veivakayadrati kina na Power amplifier kei na ivakayaca me na tautauvata na gauna me veisautaki kina. (E gadrevi mo volia e dua na vakaukauwataki ni kaukauwa kei na antenna me baleta na iyaya ni vakau kei na iciqociqo me sotavi kina na nomu veisau).
- Me rawa ni vakatorocaketaki na kilai ni vakau kei na ciqomi, na iwiliwili ni mataivakatagi e dau vaka me qiqo sara (wasoma ni valenivolavola ±15Mhz, sa dodonu me 30Mhz na bandwidth). Na vakaukauwataki ni iyaya ni vakau kei na kena ivakarau ni antenna e dau vakavinakataki vakatabakidua me vaka na wasoma o gadreva.
- Ena vinaka cake ni o o otataka, yalovinaka tukuna vei au na mataqali ivakarau ni cakacaka o gadreva. Era na veisautaka na noda idinia na ivakarau ni dauvakau itukutuku kei na iciqociqo, ka veisautaka talega na PA kei na ivakamacala ni ena gauna oqo me vaka na kena ivakarau me vakadeitaki na kena e kilai vakavinaka ka tokona na yawa balavu duadua ni vakau itukutuku.
- Na kena itaukei e 590Mca, Ena 30Mca (+/-15Mhz), e rawa ni o veisautaka ka sega ni veisautaka na Power Amplifier kei na ivakayaca. Me kena ivakaraitaki, 578Mhz, 584Mhz, 590Mhz, 596Mhz, kei na 602Mhz.
- Kevaka o gadreva mo veisautaka na ivakarau ni vakau kei na bandwidth, o gadreva e dua na iyaya digitaki ni parameter configure board, yalovinaka raica na iyaloyalo e ra, e sega ni iyaya ni iyaya sega ni vakayagataki, yalovinaka volia ena dua tale na isau se veitaratara kei keitou ni bera ni otataki.
Io, e tokona me vakauta na itukutuku ni vidio kei na UART mai na misini kei na iciqociqo.
Me vaka ga ni vakau ga ena dua na sala, me kakua kina ni vakauta na ivunau ni ivakasaribariba mai na iciqociqo ki na misini ni vakau itukutuku.
Kevaka o gadreva mo vakauta na ivakaro ni lewa se so tale na itukutuku mai na iciqociqo me lewai kina na iyaya tale eso me vaka na itaba veilawa se dro ena vakau, e rawa ni o vakuria e dua na iyaya ni vakacurumi livaliva sau lailai, veitaratara kei keda, ka rawa ni keimami vakacuruma me baleti kemuni.
Yalovinaka raica na UART e vakamacalataki tiko ena misini kei na iciqociqo ena isema e ra. Yalovinaka ni tukuna vei au kevaka o vinakata me dua na keveli i liu. (sega ni o)
Na itaukei ni Power amplifier na misini ni vakau itukutuku e 2 Watts, me rawa ni tokona 30 KM ena laini ni rai.
Na iyaloyalo e ra sai koya na noda yawa mai na ulunivanua ki na matasawa.
Kevaka o vinakata mo vakauta e dua na iwiliwili balavu cake, e rawa ni o vakalevutaka na vakaukauwataki ni kaukauwa. Me ikuri ni dua na watt kei na rua na wati, e rawa talega ni da cakava 5 Watts, 10 Watts, kei na 20 watt me nomu digidigi. Na vakaukauwataki lelevu e gadrevi talega kina na batiri lelevu kei na veitokoni ena gauna oqo.
Me baleta na 20W PA, na kaukauwa e dodonu me 24 ~ 28V. Ena 28 na idini e rawa ni vakaukauwataka na kaukauwa me rawata na cakacaka vinaka duadua.
E rawa ni veisautaka na noda idinia na ivakarau ki na 300Mhz mai na 590Mhz, Na antenna, kei na PA ena veikauyaki e 590Mhz, 300Mhz e gadreva e rua na macawa me vakavinakataki kina, sa gadrevi kina na gauna ni kena vakau e balavu cake mai na noda 590Mhz.
iKalawa 1: Yalovinaka tabaka na OK kei na ibulukau imatau ena dua vata ga na gauna, e dua na menu me baleta na me maroroi ena laurai ena sikirini.
iKalawa 2: Yalovinaka tabaka na OK mo digitaka na Io mo maroroya.
Vakananuma, yalovinaka vakayagataka na levu se balavu ni antenna kevaka e vakatara na nomu cakacaka, e rawa ni vakavinakataka cake na vakatasuasua ni veikidavaki ena kena levu cake.
Na ituvatuva taucoko e sega ni vakatarai
- IVakauta ni SD ( PA 0.5W, 1VACAVA, 2VACAVA, 5VACAVA, 10VACAVA, 20VACAVA, 50W me vaka na nomu ota)
- SD Transmitter antenna
- HDMI CVBS ni icurucuru ni icurucuru kei na menu ni kena lewai na parameter kei na sikirini lailai
- 0.8-meter ni ivakaciqociqo 1 pcs. (E rua tiko na mataqali vakacurumi se vakavinakataka na antenna: 1. na ivakaboi ni sucker ni magnetic, 2. Sega ni tiko U-mataqali clamp FRP fiberglass antenna )
- Vakatau vei iko, parameter configuration board me baleta na ivakadewa ni vidio isema.
(Kevaka o gadreva e dua na magnetic sucker base antenna, e nanuma na dauvakacaca se na iyaya ni magnetic ena vakataotaka na kena taqomaki na waqavuka, ka sa cecere cake kina na isau ni vakauyaya mai na dua na dauveiqaravi ni mataqali U. )
Na ivakarau ni pakete taucoko e sega ni vakatarai
- 84*21*12NA SETIMITA
- iLavo Levu 4.5KG
- Kevaka o digitaka e sivia na 100cm antenna kei na magnetic sucker base antenna, Eso na dauveiqaravi ni iyaya era na sauma eso tale, me vakataka na ikuri ni icurucuru balavu kei na ikuri ni icurucuru ni iyaya ni magnetic.
- Na parameter ni transmitter configures board e duidui mai na kena e tiko ena iciqociqo. Na firmware ena parameter configure board e duidui mai na iyaya ni vakau kei na iciqociqo, e sega ni rawa ni veisautaki.
- Na parameter ni transmitter configures board e rawa ni veisautaka na sikinala attenuation ena transmitter. Ena dua na 0.3db ena vakalailaitaka na 0.5W PA.
Taro: E rawa beka ni veisautaki na kaukauwa ni outpout (e loma NI 0,5 w, 1 w, 2 w) ena papa ni configuration?
- Me vaka e saumi e cake, e rawa ni o veisautaka na kaukauwa ni output ena nomu tuvanaka na parameters ni ATTEN ena parameter configuration board iyaya ni cakacaka ena transmitter. (Na iyaya oqo e sega ni okati kina na pakete sega ni vakayagataki, mo na vakaraitaka ni o vinakata me tiko vei iko na iyaya oqo ni ko otataka)
- Kevaka o volia na 2W PA, oti sa na qai rawa ni o tuvanaka 0.5W, 1VACAVA, ia e sega ni rawa ni veisautaka ki na 5W.
- E rawa talega ni da yaco ki na 5W, 10VACAVA, 20VACAVA, kei na 50W kevaka o gadreva mo tokona na kena balavu.
Sega.
Na vakau vidio isema oqo e tokona walega na CVBS itaba veilawa se vidio, eso tale na mataqali itaba veilawa ni vidio e gadrevi kina e dua tale na kato ni saumaki mai.
Sega. Oqo na COFDM (DVB-YA) Tekinoloji.
Sa qai 170-860Mhz na COFDM. E rawa ni tokona na 477, 610, 675, 724, 816Mhz, ia e sega ni rawa ni tokona 970, 1180, 1230 Mhz.
Na noda ivakaraitaki ni vakau ena rawa ni tokona na kena iwiliwili taucoko e cake, ia na iciqociqo e gadrevi me vakayagataka na buloko ni downconverter.
Me rawa ni rawa ni tokona na noda ivakarau ni vakau isema me tokona e dua na iwiliwili rabailevu ka kaukauwa vinaka cake ni sikinala, eda dau tuvanaka na ivakarau ni kena cicivaki ki na dua na gauna (170~ 860Mhz), ka sa tokoni na kena iwiliwili e levu walega se minus 15Mhz. Me kena ivakaraitaki, na ivakarau ni valenivolavola e 590Mhz, ivakarau ni veitokoni levu duadua e dodonu me 575Mhz ~ 605Mhz, Na PA kei na antenna era sa customized vakatabakidua me vaka na ivakarau ni valenivolavola oqo.
Dua tikoga na nomu taro?
Yalovinaka veitaratara mai me baleta na ikuri ni ivakamacala.
Vakauta Na Nomu TaroHow 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.
