30Km long distance COFDM HDMI Wireless Video Transmitter Pitanja
30Km long distance COFDM HDMI Wireless Video Transmitter Receiver Full Set Audio Video TX RX for UAV Drone 1080P 908T
30-150Km na velike udaljenosti COFDM HDMI odašiljač Bežični sustav video prijenosa Prijemnik kompletan audio video TX RX za UAV Drone UGV 1080P
svojstvo
- visoko integrirani, modularni kombinirani dizajn
- Korištenje COFDM modulacijske tehnologije, H.264 image coding technology
- Može prenositi jedan kanal 1080P HDMI (opcijski SDI) signal
- Donje kašnjenje, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 milisekundi.
- All-round komunikacija, Ne boji se gradi zidove
- Brza komunikacija između putovanja, the maximum moving speed can reach 600 km / sat.
- Aluminijsko kućište hladnjaka odašiljača, otporan na udarce, Waterproof case is optional.
- Podrška za LOS i bez vidljivosti (NLOS) mobilni prijenos
- Udaljenost nije manja od 30 kilometara pod uvjetom vidljivosti ( Power amplifier and distance: 2 Watts PA 30km, 5 Watts PA 60KM, 10 Watts PA 100km, 20 Watts 150km at LOS)
- Sinkroni prijem audio i video signala, višenamjenski HDMI1080P visoke razlučivosti opcionalno, kvaliteta DVD slike izlaza standardne rezolucije
- Prijemnik može ostvariti funkcije snimanja video zapisa i sigurnosne kopije
- 128-bit AES enkripcija i dešifriranje
- Dostupna potpuna prilagodba
- Upgrade tool: Parameter Configure board
- Koristiti: UAV, Vozila & UGV
- Modulacija: COFDM
- radni napon: DC11V-DC13V
- Rad struje: 0.5~ 2W (ovisno o različitim PA)
- Snaga prijenosa: 0.5W~20W optional
Sadržaj
primjena
Ovaj se proizvod uglavnom koristi u tehničkom izviđanju i prikupljanju dokaza u odjelima inspekcije javne sigurnosti i sigurnosti, prijenos slike bespilotnih letjelica u stvarnom vremenu, brodovi bez posade, radio i televizija relej, radijski i televizijski prijenosi uživo: emitirano polje, sportski emitiranje, društvene vijesti, zrak uživo, studio, planinarska ekspedicija, i drugi aspekti. Pogodan je za mobilni prijenos visokokvalitetnih slika u stvarnom vremenu u raznim složenim okruženjima, poput urbanih područja, mora, i planine.
Specifikacija odašiljača
modulacijska metoda | COFDM |
radni napon | DC11V ~ DC13V |
radna struja | 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 |
upravljačko sučelje | standardno RS232 sučelje, 8 Bitovi podataka, 1 Svrh Bit, Paritetni bit, Brzina prijenosa: 19200 |
transparentno podatkovno sučelje, | jednosmjerni prozirni prijenos serijskog porta, 8 Bitovi podataka, 1 Stop bit, podržavaju Neparni paritet, Paritetni bit, Bežični paritet, Brzina prijenosa: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
metode šifriranja | podržavaju 128-bitno šifriranje |
preslikavanje modulacije | QPSK (4QAM), 16QAM, 64QAM |
unaprijedno ispravljanje pogrješke | 1/2 2/3 3/4 5/6 7/ 8 |
interval straža | 1/32 1/16 1/8 1/4 |
Broj prijevoznika | 2K |
frekvencijski pojas | 2 / 3 / 4 / 5 / 6 / 7 / 8M Podesiva |
prijenosni kodni prijenos | 2000kbs ~ 20000kbs Podesivo |
prijenos snage | 0.5 / 1 / 2 / 5 / 10 Watts |
frekvencija prijenosa | Any Frequency Customizable, Korak 1MHz |
spljoštenost snage | unutar 10MHz bez pojasa od 0,2dB |
omjer ramena | izlazna snaga 27dB, omjer ramena je bolji od -30dB |
drugi harmonik | ≤-45dB |
VIŠE | 32Db |
ulazni video | 720×480 60ja(NTSC), 720×576 50ja(PAL), 720 50P, 720 60P, 1080 50ja, 1080 60ja, 1080 24P, 1080 25P, 1080 30P, 1080 50P, razni su načini prilagodljivi. |
HD sučelje | HDMI, SDI nije obavezan |
format video kodiranja | H.264 |
standard zaštite | potpuno aluminijska šasija hladnjaka, anti-korozije, dizajn otporan na udarce |
Ukupna veličina | 9 x 6.4 x 2.3 cm |
Ukupna težina | ≤0.20KG |
Specifikacija prijemnika
Strojni parametri višepropusnog opsega HD prijemnika postavljeni u stalak | |
Primanje frekvencijskog raspona | 170-860MHz VHF&UHF |
širina pojasa frekvencije | 2/3/4/5/6/7/8MHz, neobavezan |
Razina RF ulaza | -94dBm ~ -15dBm (8M propusnost)/-98dBm ~ -15dBm (2M propusnost) |
RF ulazne impedancije | 50 oma |
ulazni priključak RF | N-glava |
način demodulacije | COFDM |
način sazviježđa | QPSK, 16QAM, 64QAM (neobavezan) |
unaprijedno ispravljanje pogrješke | 1/2, 2/3, 3/4, 5 /6,7/8 (neobavezan) |
broj prijevoznika | 2k, |
interval straža | 1/32, 1/16, 1/8, 1/4 (neobavezan) |
Video dekodiranje | MPEG-2MP@ML/H.264 |
omjer slike | 4: 3 16: 9 |
video slika je | 720 * 576 @ 8MHz 1080P @ 60P |
način audio izlaza | stereo neuravnotežen 300 / 200mv |
audio izlaz | output2Audio + 2Video izlaz |
radni napon | AC220V / DC12V <0.5A |
Radna temperatura | – 20℃ ~ + 50 ℃ |
Veličina izgleda | 480*260*45 (1U) šasija |
težina opreme | 1.5kg (dvosmjerni jezik 2,5Kg) |
Bilješka: zadani priključak je HDMI, ako trebate jeftiniji model, konektor za CVBS žuti video konektor 720p HDMI, Molim Provjerite ovdje za drugi model.
Opis:
– Ovaj uređaj prihvaća COFDM tehnologiju, koji integrira prijenosnu antenu, digitalna modulacija, zvučni, i video funkcija.
– Kompaktne veličine, mala vrućina, i dug domet prijenosa
– kompatibilno s malim fotoaparatom, mogao omogućiti HD snimanje i prijenos slike
– domet prijenosa bit će veći ako se koristi antena s visokim pojačanjem
– Područje prijenosa: 5000m (bez ikakvog prekida)/500M s preprekama prekidaju
Značajke:
– Kompaktne veličine, modulacijski dizajn
– Usvaja tehnologiju modulacije COFDM, MPEG-2 tehnologija kompresije slike
– Svesmjerna komunikacija
– brza komunikacija omogućuje prijenos zvuka i slike u stvarnom vremenu
– Aluminijsko kućište otporno na udarce
– NLOS prijenos
Tehnički podaci:
Odašiljač:
– Veličina:90x64x23mm
– težina:200g
– antena:22mm
Prijamnik
– veličina: 87x70x20mm
– težina:200g
– Visina antene:42.5cm (mogao biti savijen)
Tehničke karakteristike
– Modulacija: COFDM
– radni napon: DC11V-DC13V
– Rad struje:0.5W: manje od 0,6A @ DC12V
– kontrolni port: standrad RS232 priključak. 8-bitni bitovi podataka, 1-bit stop bit, broj bauda:19200, podrška neparna provjera pariteta
– prijenos podataka port:8 bitni bitovi podataka,1 bit stop bit, broj bauda,1200,2400,4800,9600,19200,38400,57600,115200,230400
– Šifriranje: podrška 128 šifriranje
– modulacija mapiranje: QPSK (4QAM),16QAM,64QQAM
– Unaprijedno ispravljanje pogrješke: 1/2,2/3,3/4,5/6,7/8
– Zaštitite interval: 1/32,1/16,1/8,1/4
– Broj prijevoznika:2K
– frekvencijski pojas:2/3/4/5/6/7/8M podesiva
– transportni tok:2000kbs-20000kbs podesivo
– prijenosna snaga: 2W
– frekvencija prijenosa: mogao prilagoditi, korak je 1 MHz
– ravne snage: manje od 0,2 db unutar 10 MHz
– drugo harmonika: manje od -45db
– VIŠE:32db
– ulazni video:1Vp-p,75om
– Format video programa: MPEG-2
– Kvaliteta videa: 720×576 kada je iznad 4M
– Format: NTSC i PAL se mogu postaviti
Tehnička specifikacija prijemnika:
– Raspon frekvencije prijamnika: 170-860MHz, VHF i UHF
– frekvencijski pojas: 2/3/4/5/6/7/8 MHz, prilagodljiv
– Razina RF ulaza:-94DBM-0dbm na 8M / -98dbm-0dbm na 2M
– RF ulazne impedancije: 50om
– RF ulazni priključak: Srednja škola
– modulacija: COFDM
– Sazviježđe: QPSK,16QAM,64QAM opcionalno
– Unaprijedno ispravljanje pogrješke: 1/2,2/3,3/4,5/6,7/8 neobavezan
– Broj prijevoznika:2K
– Zaštitni jaz:1/32,1/16,1/8,1/4
– Brzina zaslona:4:3,16:9
– video slika:720×576 @ 6 MHz
– Audio i video izlazni priključak: standard 3.5 luka
– radni napon: DC12V 0,3A
Paket uključen:
– 1 x odašiljač
– 1 x prijamnik
– 1 set x pribor
30Km long distance COFDM HDMI Wireless Video Transmitter
Pitanja
Pitanje 1: Trebam najmanje 30 km dometa od zraka do zemlje za UAV UGV USV.
Odgovor 1:Naš sustav to podržava, trebalo bi koristiti pojačalo snage 2W, bolje je koristiti posebnu dugačku antenu odašiljača i dvije više antene prijemnika.
COFDM-912T VS COFDM-908T
Pitanje 2: Koliko daleko mogu stići ako koristim i odašiljač i prijemnik na zemlji?
Odgovor: Na tlu, odašiljač i prijamnik moraju imati određenu visinsku razliku za prijenos na velike udaljenosti.
Najveća udaljenost je samo 2.5 kilometara ako su odašiljač i prijamnik na istoj visini na tlu. Pogledajte naš testni video; jer su odašiljač i prijamnik postavljeni na različite razine, jedna strana je na planini, druga strana je na moru, koristili smo zadana dva vata za prijenos 27 kilometara.
Pitanje 3: Podržava li radno okruženje od -20 stupnjeva?
Odgovor: Da, podržan
Pitanje 4: I want to buy modules and built-in my devices, please tell me the dimension of that modules.
Odgovor: SD model: 6X7X1.6cm, HD model: 5X7X1.6cm
Pitanje 5:Do you have any special case shells for marine use?
Odgovor: Da, Molimo provjerite donju sliku. (For the transmitter with a three-proof shell, vodootporan, otporan na udarce, anti-salt spray, 防水,防震,防盐雾)
Precautions for order customization
- Frekvencija: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- dužina antene: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 ili 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/.
FAQ
Q. What is the video resolution?
A: HDMI 1080p.
Q. Does the transmitter power current is high?
A: Za Odašiljač, the different PA (pojačalo) iznutra, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
Za Prijamnik, 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 kilometara. 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 primjer, 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, itd.
- 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 metara.
- 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.
GODIŠNJE | 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 primjer, 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 sati.
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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. Because COFDM is a one-way transmission, 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.
- Prvi, 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 vata. 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, 1080@50p, 1080@30p
trenutno, it does not support 1080i, nor does it support 4K transmission.
20km iznad mora HDMI bežični video odašiljač i test prijemnika za brod ili s obale na brod
Long-range 20 Watts Power Amplifier Transmitter and Receiver needs a 12V 6A power supply
Recenzije
Nema recenzija gostiju.