30Km long distance COFDM HDMI Wireless Video Transmitter Pogosta vprašanja
30Km long distance COFDM HDMI Wireless Video Transmitter Receiver Full Set Audio Video TX RX for UAV Drone 1080P 908T
30-150Km na dolge razdalje COFDM HDMI oddajnik Brezžični video prenosni sistem Sprejemnik Celoten komplet Avdio Video TX RX za UAV Drone UGV 1080P
funkcija
- zelo povezano, modularna kombinirana oblika
- Uporaba COFDM modulacijske tehnologije, H.264 image coding technology
- Lahko prenaša en kanal 1080P HDMI (opcijski SDI) Signal
- Spodnja zakasnitev, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 milisekund.
- All-round komunikacija, ne boji gradi zidove
- Hitra komunikacija med potovanjem, the maximum moving speed can reach 600 km / h.
- Ohišje tipa hladilnika oddajnika, odporen na udarce, Waterproof case is optional.
- Podpora LOS in brez vidnega polja (NLOS) mobilni prenos
- Razdalja ni manjša od 30 kilometrov pod pogojem vidnosti ( Power amplifier and distance: 2 Watts PA 30km, 5 Watts PA 60KM, 10 Watts PA 100km, 20 Watts 150km at LOS)
- Sinhroni sprejem avdio in video signalov, neobvezna multi-format HDMI1080P visoke ločljivosti, kakovost izhodnega DVD-ja s standardno ločljivostjo
- Sprejemnik lahko izvaja funkcije snemanja in varnostnega kopiranja
- 128-bitno šifriranje in dešifriranje AES
- Na voljo popolna prilagoditev
- Upgrade tool: Parameter Configure board
- Uporaba: UAV, Vozila & UGV
- modulacija: COFDM
- Delovna napetost: DC11V-DC13V
- delovni tok: 0.5~ 2W (odvisno od različnih PA)
- Moč prenosa: 0.5W~20W optional
Kazalo
uporaba
Ta izdelek se uporablja predvsem za tehnično izvidništvo in zbiranje dokazov v oddelkih za javno varnost in varnost, prenos posnetkov brez posadke v realnem času, ladje brez posadke, radijski in televizijski rele, radijski in televizijski prenosi v živo: oddajno polje, športna oddaja, socialno novice, zrak v živo, studio, planinska odprava, in druge vidike. Primeren je za mobilni prenos visokokakovostnih slik v realnem času v različnih zapletenih okoljih, kot so mestna območja, morja, in gore.
Specifikacija oddajnika
modulacijska metoda | COFDM |
delovna napetost | DC11V ~ DC13V |
delovni tok | 0.5 Watts: ≤0,6A DC12V, 1 Watts: ≤0,8A DC12V, 2 Watts: ≤1.5A DC12V 5 Watts: ≤3,0A DC12V 10 Watts: ≤5.0A DC12V 20 Watts: ≤7.0A DC12V |
nadzorni vmesnik | standardni vmesnik RS232, 8 Podatkovni bit, 1 Szgornji bit, Paritetni bit, Hitrost prenosa: 19200 |
pregleden podatkovni vmesnik, | enosmerni pregleden prenos serijskih vrat, 8 Podatkovni bit, 1 Stop bit, podpirajo Odd Parity, Paritetni bit, Brezžična parnost, Hitrost prenosa: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
metode šifriranja | podpira 128-bitno šifriranje |
preslikava modulacije | QPSK (4QAM), 16QAM, 64QAM |
naprej popravljanje napak | 1/2 2/3 3/4 5/6 7/ 8 |
interval Guard | 1/32 1/16 1/8 1/4 |
Številka prevoznika | 2K |
frekvenca pasovne širine | 2 / 3 / 4 / 5 / 6 / 7 / 8M Nastavljivo |
prenos kode prenosa | 2000kbs ~ 20000kbs Nastavljivo |
oddajna moč | 0.5 / 1 / 2 / 5 / 10 Watts |
oddajna frekvenca | Prilagodljiva poljubna frekvenca, Korak 1MHz |
ploskost moči | znotraj 10MHz brez pasu od 0,2 dB |
razmerje rame | izhodna moč 27dB, ramensko razmerje je boljše od -30dB |
druga harmonika | ≤-45 dB |
VEČ | 32Db |
vhodni video | 720×480 60jaz(NTSC), 720×576 50jaz(PAL), 720 50P, 720 60P, 1080 50jaz, 1080 60jaz, 1080 24P, 1080 25P, 1080 30P, 1080 50P, različni načini so prilagodljivi. |
HD vmesnik | HDMI, SDI neobvezno |
format video kodiranja | H.264 |
standard zaščite | popolnoma aluminijasto ohišje hladilnika, Antikorozijska, odporna proti udarcem |
Skupna velikost | 9 x 6.4 x 2.3 cm |
Skupna teža | ≤0,20KG |
Specifikacija sprejemnika
Strojni parametri sprejemnika HD z več pasovno širino sprejemnika | |
Sprejema frekvenčno območje | 170-860MHz VHF&UHF |
frekvenčna pasovna širina | 2/3/4/5/6/7/8MHz, neobvezno |
RF vhodna raven | -94dBm ~ -15dBm (8M pasovne širine)/-98dBm ~ -15dBm (2M pasovne širine) |
RF vhodni impedanca | 50 ohmov |
Priključek za vhod RF | N-glava |
način demodulacije | COFDM |
ozvezdje | QPSK, 16QAM, 64QAM (neobvezno) |
naprej popravljanje napak | 1/2, 2/3, 3/4, 5 /6,7/8 (neobvezno) |
številka prevoznika | 2K, |
interval stražar | 1/32, 1/16, 1/8, 1/4 (neobvezno) |
video dekodiranje | MPEG-2MP@ML/H.264 |
razmerje | 4: 3 16: 9 |
video slika je | 720 * 576 @ 8MHz 1080P @ 60P |
avdio izhodni način | stereo neuravnoteženo 300 / 200mv |
avdio izhod | output2Audio + 2Video izhod |
delovna napetost | AC220V / DC12V <0.5A |
Delovna temperatura | – 20℃ ~ + 50 ℃ |
Velikost videza | 480*260*45 (1U) podvozje |
teža opreme | 1.5kg (dvosmerni jezik 2,5 kg) |
Opomba: privzeti priključek je HDMI, če potrebujete cenejši model, priključek za CVBS rumeni video priključek 720p HDMI, prosim Preverite tukaj za drug model.
Opis:
– Ta naprava uporablja tehnologijo COFDM, ki vključuje prenosno anteno, digitalna modulacija, audio, in video funkcijo.
– Kompaktna velikost, majhna toplota, in dolg razpon prenosa
– združljiv z majhno kamero, lahko omogočil zajem in prenos slike HD
– domet prenosa bo daljši, če sprejme anteno z visokim ojačanjem
– Območje prenosa: 5000m (brez kakršne koli prekinitve)/500M z ovirami prekine
Lastnosti:
– Kompaktna velikost, modulacijsko načrtovanje
– Sprejema modulacijsko tehnologijo COFDM, MPEG-2 tehnologija stiskanja slik
– Vsesmerna komunikacija
– hitra komunikacija omogoča prenos zvoka in slike v realnem času
– Aluminijasto ohišje, ki je odporno na udarce
– Prenos NLOS
Tehnični podatki:
oddajnik:
– Velikost:90x64x23mm
– teža:200g
– antena:22mm
sprejemnik
– velikost: 87x70x20mm
– teža:200g
– Višina antene:42.5cm (lahko upognjen)
Tehnična specifikacija
– modulacija: COFDM
– delovna napetost: DC11V-DC13V
– delovni tok:0.5W: manj kot 0,6 A @ DC12V
– krmilna vrata: standrad RS232 vrata. 8-bitni podatkovni bit, 1-bit stop bit, hitrost prenosa:19200, podpora preverjanju neparnih paritet
– vrata za prenos podatkov:8 bitni podatkovni bit,1 bit stop bit, hitrost prenosa,1200,2400,4800,9600,19200,38400,57600,115200,230400
– šifriranje: podpora 128 šifriranje
– modulacija kartiranje: QPSK (4QAM),16QAM,64QQAM
– Naprej popravljanje napak: 1/2,2/3,3/4,5/6,7/8
– Zaščitite interval: 1/32,1/16,1/8,1/4
– Številka prevoznika:2K
– frekvenca pasovne širine:2/3/4/5/6/7/8M nastavljiv
– prometni tok:2000kbs-20000kbs nastavljiv
– prenosna moč: 2W
– oddajna frekvenca: lahko prilagodite, korak je 1 MHz
– moč ploskost: manj kot 0,2 db znotraj 10 MHz
– drugi harmonična: manj kot -45db
– VEČ:32db
– vhodni video:1Vp-p,75ohm
– Format video programa: MPEG-2
– Kakovost videa: 720×576 ko je nad 4M
– oblika: NTSC in PAL je mogoče nastaviti
Tehnična specifikacija sprejemnika:
– Frekvenčno območje sprejemnika: 170-860Mhz, VHF in UHF
– frekvenca pasovne širine: 2/3/4/5/6/7/8 Mhz, nastavljiva
– RF vhodna raven:-94SMO-0dbm pri 8M / -98dbm-0dbm pri 2M
– RF vhodni impedanca: 50ohm
– RF vhodna vrata: Srednja šola
– modulacija: COFDM
– Konstelacijski način: QPSK,16QAM,64QAM neobvezno
– Naprej popravljanje napak: 1/2,2/3,3/4,5/6,7/8 neobvezno
– Številka prevoznika:2K
– Zaščitna vrzel:1/32,1/16,1/8,1/4
– Hitrost zaslona:4:3,16:9
– video sliko:720×576 @ 6Mhz
– Avdio in video izhodna vrata: standardna 3.5 port
– Delovna napetost: DC12V 0,3A
Komplet vsebuje:
– 1 x oddajnik
– 1 x sprejemnik
– 1 set x dodatkov
30Km long distance COFDM HDMI Wireless Video Transmitter
Pogosta vprašanja
vprašanje 1: Potrebujem vsaj 30 km dosega od zraka do tal za UAV UGV USV.
odgovor 1:Naš sistem to podpira, naj uporablja 2W ojačevalnik, bolje je uporabiti posebno dolgo oddajno anteno in dve višji sprejemni anteni.
COFDM-912T VS COFDM-908T
vprašanje 2: Kako daleč lahko pridem, če uporabljam oddajnik in sprejemnik na tleh?
odgovor: Pri uporabi na tleh, oddajnik in sprejemnik morata imeti določeno višinsko razliko za prenos na velike razdalje.
Najdaljša razdalja je samo 2.5 kilometrov, če sta oddajnik in sprejemnik na isti višini na tleh. Oglejte si naš testni video; ker sta oddajnik in sprejemnik postavljena na različnih nivojih, ena stran je na gori, druga stran je ob morju, za prenos smo uporabili privzeta dva vata 27 kilometrov.
vprašanje 3: Ali podpira delovno okolje -20 stopinj?
odgovor: Da, podprta
vprašanje 4: Želim kupiti module in vgradne naprave, prosim povejte mi dimenzijo teh modulov.
odgovor: SD model: 6X7X1,6 cm, HD model: 5X7X1,6 cm
vprašanje 5:Do you have any special case shells for marine use?
odgovor: Da, Preverite spodnjo sliko. (For the transmitter with a three-proof shell, vodoodporen, odporen na udarce, anti-salt spray, 防水,防震,防盐雾)
Precautions for order customization
- frekvenca: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- antena dolžina: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 ali 1.8 meters optional)
- Antenna type:
According to your application scenario, the wireless video transmitter be placed on the drone or on the ground, or on the vehicle? Select different transmit antennas for transmitter and receiver antennas.
The transmitter of the UAV uses a short omnidirectional antenna as much as possible. The transmitter antenna installed on the ground or on the vehicle should be as long as possible, and it can be installed higher to avoid other obstacles on the ground. The receiver is generally used on the ground, try to choose a longer receiver antenna. If it is fixed in one place, a directional antenna can also be used. For more antenna types, please refer to https://ivcan.com/price-list-for-wireless-video-transmitter-and-receiver-antenna/.
pogosta vprašanja
Q. What is the video resolution?
A: HDMI 1080P.
Q. Does the transmitter power current is high?
A: Za oddajnik, the different PA (ojačevalnik moči) znotraj, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
Za sprejemnik, the current is only 0.3A (300mA)
Q: Like we only need 10km, how much PA is recommended?
A: Considering that your transmitter and receiver are used on the ground, unlike drones, the heights of the transmitter and receiver are very different. It is recommended to use a 10W PA transmitter for 10 kilometrov. You also need to consider that your receiver is installed on the car, and it keeps moving at high speed at any time. Only a high-power transmitter can ensure the signal stability at the receiver.
Q: What frequency is better? 2.4G or 5.8G?
A: The frequency range of Cofdm is 170~860Mhz.
We also have products that use 2.4G or 5.8G, but the range of these two intervals is the same as the frequency of WiFi, which will cause the transmission to be greatly interfered by WiFi, and the transmission distance will be greatly shortened.
If there are digital TV DVB-T signals locally, try to avoid frequencies in these ranges when selecting frequencies.
Q: Can customers adjust the frequency by themselves? If sometimes the frequency is occupied.
A: The default center frequency is 595Mhz, generally there is +/-15Mhz bandwidth, which is 30Mhz, and the frequency range can be adjusted. (580-610Mhz).
Beyond this range, it is necessary to change the antenna and PA customized according to this center frequency.
Q:How does the customer adjust the frequency of the transmitter or receiver? Is there any software to change the frequency?
A:It's very easy, the transmitter can use the assistant board next to the picture, and the receiver's assistant board is on the fuselage, with a screen and buttons.
But it is not recommended for customers to adjust, because sometimes he changed the parameters of the transmitter but did not change the parameters of the receiver, saying that he could not receive the signal.
Q: Can I adjust the power amplifier on the transmitter?
A: The user can reduce the actual output power by increasing the impedance of the high power, but cannot increase the transmitter of the low power PA.
na primer:, 10W PA can change to 5W PA, but can not change 5W PA to 10W.
- No one can tell you the exact transmission distance. Because the transmission distance depends on the height of your transceiver antenna and the type and thickness of obstacles, whether the transmitted signal can be diffracted, whether there is interference in the current frequency, etc.
- There are trees or a mountain in the middle, and the transmission distance is different.
- It is difficult to tell you an accurate transmission distance, even the walls have thickness, generally 500-1000 metrov.
- Please watch our test video, if you think it is suitable, you can buy a sample for testing, if you are not satisfied, you can return it to us.
- Here is a form for COFDM PA and LOS and NLOS transmission distance for your references.
PA | THE | NLOS |
500mW | >10Km | <300m |
1W | >30Km | <500m |
5W | >60Km | <1500m |
20W | >120km | <3000m |
50W | >200Km | <5000m |
100W | >250Km | <10Km |
Now COFDM-908T supports H.264, not H265.
Max support 1080 50P. We have actually tested that at 1080P60, the frame will be stuck, or the recognition will be incomplete
- Power consumption is equal to current times voltage. na primer:, for a 10W transmitter, the current is 5.5A, and the voltage is 12V, so its power consumption is 66W.
- If you prepare a 1000W rechargeable battery and use a 10W PA transmitter, it is estimated that you can use 1000W divided by 66W, which is equal to 15 ure.
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Whether the link between the transmitter and receiver is good or the signal strength can be seen on the small screen at the COFDM receiver.
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Not on the transmitter. Ker je COFDM enosmerni prenos, only the receiver can receive the signal strength of the transmission and show them on the screen. If the transmitter needs to see these signals, it is necessary to add a set of data transmission devices to transfer the status signal from the receiver to the transmitter and display them by the signal light.
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The transmitter and receiver of two-way transmission can have this function, and it is recommended to choose a bidirectional transmission device.
- First of all the frequency is correct.
- In order to achieve the best performance of the transmitter, power amplifier and antenna, they are generally customized according to a central operating frequency point, and they can all work within a working frequency range, generally ±15Mhz. That is to say, when the central operating frequency is 290Mhz, the working range of the transmitter is 275Mhz~305Mhz. So it meets the frequency range of 280~300Mhz required by customers.
- Da, the wireless video signal reception is improved by using Yagi and omni-directional antennas.
- Da, we can build the transmission of telemetry and video in COFDM-908T.
- Prvič, the 10-watt RF linear amplifier and the 20-watt RF linear amplifier use the same cavity, which is machined by a CNC mill.
- CNC milling machines are not only expensive but also take a long time to process. The 20W and 10W cavities are universal, so they can be used with each other. For faster delivery, this character was not changed and used directly.
- This product actually has 20 W. We used special instruments to test it before shipment. Please see the video below. (The instrument shows 3.04dBm plus the black attenuator 40dBm equals 43.04dBm)
- Test video at youtube: https://www.youtube.com/shorts/jfNoZeb1BIA
- Here are some correspondences between the output power and the dBm parameters displayed by the instrument.
- 20mW is 13dBm
200mW is 23dBm
1 Watts is 30dBm
2 Watts is 33dBm
5 Watts is 37dBm
10 Watts is 40dBm
20 Watts is 43dBm
50 Watts is 47dBm
100 Watts is 50dBm
Normal Four HDMI Video input and One HDMI output box
If it is just a simple splicing of four camera videos into one video, you can add a box with four HDMI inputs and one HDMI output in front of the transmitter. This means that the monitor on the receiver will always display each video on a quarter of the screen.
Da, our dual antenna RF input receiver supports diversity. You can use two yagi directional antenna on our cofdm wireless video receiver.
For better signal reception, it is recommended to have one Yagi directional antenna and one omnidirectional antenna installed on the receiver.
It can be used by photographers. Currently supports 1080@60P, 1080dvokanalni video vhod/kodiranje/oddajanje hkrati, 1080dvokanalni video vhod/kodiranje/oddajanje hkrati
trenutno, it does not support 1080i, nor does it support 4K transmission.
20km čez morje, preizkus brezžičnega video oddajnika in sprejemnika HDMI za čoln ali od obale do ladje
Long-range 20 Watts Power Amplifier Transmitter and Receiver needs a 12V 6A power supply
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