30Km long distance COFDM HDMI Wireless Video Transmitter FAQ
30Km long distance COFDM HDMI Wireless Video Transmitter Receiver Full Set Audio Video TX RX for UAV Drone 1080P 908T
30-150Km long-distance COFDM HDMI Transmitter Wireless Video Transmission system Receiver full Set Audio Video TX RX para sa UAV Drone UGV 1080P
tampok
- Lubos na isinama, modular pinagsamang disenyo
- Paggamit ng teknolohiyang modyulasyon ng COFDM, H.264 image coding technology
- Maaari itong magpadala ng isang channel ng 1080P HDMI (opsyonal na SDI) senyas
- Mababang pagkaantala, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 milliseconds.
- Ang lahat ng-round komunikasyon, hindi takot ng pagbuo ng mga pader
- Mabilis na komunikasyon sa pagitan ng paglalakbay, the maximum moving speed can reach 600 km / hour.
- Transmitter heat sink type na kaso ng aluminyo, shockproof, Waterproof case is optional.
- Suportahan ang LOS at Non-line-of-sight (NLOS) mobile transmission
- Ang distansya ay hindi bababa sa 30 kilometro sa ilalim ng kondisyon ng line-of-sight ( Power amplifier and distance: 2 Watts PA 30km, 5 Watts PA 60KM, 10 Watts PA 100km, 20 Watts 150km at LOS)
- Kasabay na pagtanggap ng mga signal ng audio at video, mataas na kahulugan na HDMI1080P multi-format na opsyonal, standard-kahulugan output kalidad ng imahe ng DVD
- Maaaring mapagtanto ng tatanggap ang pag-record ng video at pag-andar ng pag-backup
- 128-pag-encrypt at pag-decry ng bit AES
- Magagamit ang buong pagpapasadya
- Upgrade tool: Parameter Configure board
- paggamit: UAV, Mga Sasakyan & UGV
- modulasyon: COFDM
- Paggawa boltahe: DC11V-DC13V
- Paggawa kasalukuyang: 0.5~ 2W (depende sa iba't ibang PA)
- kapangyarihan ng paghahatid: 0.5W~20W optional
Talaan ng nilalaman
application
Pangunahing ginagamit ang produktong ito sa teknikal na pagsisiyasat at koleksyon ng katibayan ng seguridad ng publiko at mga kagawaran ng inspeksyon sa kaligtasan, paghahatid ng real-time na imahe ng mga walang sasakyan na mga sasakyang panghimpapawid, mga bapor na walang tao, relay ng radyo at telebisyon, mga live na broadcast sa radyo at telebisyon: larangan ng pag-broadcast, sports broadcast, panlipunan balita, mabuhay ang hangin, talyer, paglalakbay sa bundok ng Expedition, at iba pang mga aspeto. Ito ay angkop para sa real-time na mobile na paghahatid ng mga de-kalidad na imahe sa iba't ibang mga kumplikadong kapaligiran tulad ng mga lugar sa lunsod, dagat, at mga bundok.
Pagtukoy ng Transmitter
pamamaraang modulation | COFDM |
nagtatrabaho boltahe | DC11V ~ DC13V |
kasalukuyang pagtatrabaho | 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 |
control interface | karaniwang interface ng RS232, 8 Mga Bits ng Data, 1 Snangungunang Bit, Parity Bit, Rate ng Baud: 19200 |
transparent data interface, | isang one-way transparent serial port transmission, 8 Mga Bits ng Data, 1 Itigil ang Bit, suportahan ang Odd Parity, Parity Bit, Wireless Parity, Rate ng Baud: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
mga pamamaraan ng pag-encrypt | suportahan ang 128-bit na pag-encrypt |
pagmamapa ng modulation | QPSK (4QAM), 16QAM, 64QAM |
pasulong error koreksyon | 1/2 2/3 3/4 5/6 7/ 8 |
Guard interval | 1/32 1/16 1/8 1/4 |
Numero ng carrier | 2K |
Dalas ng bandwidth | 2 / 3 / 4 / 5 / 6 / 7 / 8M Naaayos |
stream ng paghahatid ng code | 2000kbs ~ 20000kbs Naaayos |
magpadala ng kapangyarihan | 0.5 / 1 / 2 / 5 / 10 Watts |
dalas ng paghahatid | Anumang Dalas Nako-customize, Hakbang 1MHz |
isang power flatness | sa loob ng 10MHz walang banda kaysa sa 0.2dB |
ratio ng balikat | ang output power na 27dB, ang ratio ng balikat ay mas mahusay kaysa sa -30dB |
ang pangalawang maharmonya | ≤-45dB |
MORE | 32Db |
input video | 720×480 60ako(NTSC), 720×576 50ako(PAL), 720 50P, 720 60P, 1080 50ako, 1080 60ako, 1080 24P, 1080 25P, 1080 30P, 1080 50P, iba't ibang mga mode ay umaangkop. |
HD Interface | HDMI, Opsyonal ng SDI |
format ng pag-encode ng video | H.264 |
pamantayan ng proteksyon | all-aluminyo chassis na uri ng radiator, anti-kaagnasan, disenyo ng shock-proof |
kabuuang sukat | 9 x 6.4 x 2.3 cm |
Pangkalahatang timbang | ≤0.20KG |
Pagtutukoy ng Tagatanggap
Ang mga parameter ng tatanggap na multi-bandwidth na naka-mount sa Machine Rack | |
Makatanggap ng saklaw ng dalas | 170-860MHz VHF&UHF |
dalas ng bandwidth | 2/3/4/5/6/7/8MHz, opsyonal |
Antas ng pag-input ng RF | -94dBm ~ -15dBm (8M bandwidth)/-98dBm ~ -15dBm (2M bandwidth) |
RF input impedance | 50 ohms |
RF input connector | N-ulo |
mode ng demodulation | COFDM |
mode ng konstelasyon | QPSK, 16QAM, 64QAM (opsyonal) |
pasulong error koreksyon | 1/2, 2/3, 3/4, 5 /6,7/8 (opsyonal) |
numero ng carrier | 2k, |
guard interval | 1/32, 1/16, 1/8, 1/4 (opsyonal) |
pag-decode ng video | MPEG-2MP@ML/H.264 |
ratio ng aspeto | 4: 3 16: 9 |
imahe ng video ay | 720 * 576 @ 8MHz 1080P @ 60P |
audio output mode | hindi timbang ang stereo 300 / 200mv |
Audio output | output2Audio + 2Video output |
operating boltahe | AC220V / DC12V <0.5A |
operating temperatura | – 20℃ ~ + 50 ℃ |
Laki ng hitsura | 480*260*45 (1U) tsasis |
bigat ng kagamitan | 1.5kg (dalwang wika 2.5Kg) |
nota: ang default na konektor ay HDMI, kung kailangan mo ng mas murang modelo, isang konektor para sa CVBS Dilaw na konektor ng video 720p HDMI, pakiusap Suriin dito para sa ibang modelo.
paglalarawan:
– Ang aparatong ito ay gumagamit ng teknolohiya ng COFDM, na nagsasama ng antena ng paghahatid, digital na modulasyon, audio, at pag-andar ng video.
– Laki ng siksik, maliit na init, at mahabang saklaw ng paghahatid
– katugma sa isang maliit na camera, maaaring paganahin ang pagkuha ng imahe at paghahatid ng HD
– ang hanay ng transmission ay magiging mas mahaba kung ito ay gumagamit ng high gain antenna
– Saklaw ng paghahatid: 5000m (nang walang anumang makagambala)/500M na may mga hadlang na makagambala
Mga tampok:
– Laki ng siksik, disenyo ng modulation
– Pinagtibay ang teknolohiyang modyulasyon ng COFDM, Teknolohiya ng compression ng imahe ng MPEG-2
– Komunikasyon sa Omnidirectional
– ang mabilis na komunikasyon ay nagbibigay-daan sa real-time na paghahatid ng audio at video
– Isang aluminum case na hindi shockproof
– Paghahatid ng NLOS
Mismong:
transmiter:
– laki:90x64x23mm
– timbang:200g
– antena:22mm
receiver
– laki: 87x70x20mm
– timbang:200g
– Taas ng antena:42.5cm (maaaring baluktot)
Teknikal na pagtutukoy
– modulasyon: COFDM
– nagtatrabaho boltahe: DC11V-DC13V
– Paggawa kasalukuyang:0.5W: mas mababa sa 0.6A @ DC12V
– control port: standrad RS232 port. 8-bit data bits, 1-medyo huminto ng kaunti, baud rate:19200, suportahan ang kakaibang pagsusuri ng pagkakapareho
– paghahatid ng data port:8 bit data bits,1 medyo huminto ng kaunti, baud rate,1200,2400,4800,9600,19200,38400,57600,115200,230400
– encryption: tulong 128 naka-encrypt
– modulasyon mapping: QPSK (4QAM),16QAM,64QQAM
– Pasulong error koreksyon: 1/2,2/3,3/4,5/6,7/8
– Protektahan ang agwat: 1/32,1/16,1/8,1/4
– Numero ng carrier:2K
– Dalas ng bandwidth:2/3/4/5/6/7/8M naaayos
– stream ng transportasyon:2000adjustable ang kbs-20000kbs
– lakas ng paghahatid: 2W
– dalas ng paghahatid: maaaring ipasadya, ang hakbang ay 1Mhz
– kabaguan ng kuryente: mas mababa sa 0.2db sa loob ng10Mhz
– ikalawang maharmonya: mas mababa sa -45db
– MORE:32db
– input video:1VP-p,75oum
– Format ng programa ng video: MPEG-2
– Kalidad ng video: 720×576 kapag sa itaas ng 4M
– format: Maaaring itakda ang NTSC at PAL
Pagtutukoy ng teknikal na tatanggap:
– Saklaw ng dalas ng tatanggap: 170-860Mhz, VHF at UHF
– Dalas ng bandwidth: 2/3/4/5/6/7/8 Mhz, madaling iakma
– Antas ng pag-input ng RF:-94dbm-0dbm sa 8M / -98dbm-0dbm sa 2M
– RF input impedance: 50oum
– Port ng pag-input ng RF: high School
– modulasyon: COFDM
– Ang paraan ng konstelasyon: QPSK,16QAM,64Opsyonal ng QAM
– Pasulong error koreksyon: 1/2,2/3,3/4,5/6,7/8 opsyonal
– Numero ng carrier:2K
– Puwang ng proteksyon:1/32,1/16,1/8,1/4
– Rate ng screen:4:3,16:9
– imahe ng video:720×576 @ 6Mhz
– Audio at video output port: pamantayan 3.5 port
– Paggawa boltahe: DC12V 0.3A
Kasama ang package:
– 1 x transmiter
– 1 x tatanggap
– 1 itakda x accessories
30Km long distance COFDM HDMI Wireless Video Transmitter
FAQ
tanong 1: Kailangan ko ng hindi bababa sa 30km na hanay mula sa himpapawid hanggang sa lupa para sa UAV UGV USV.
sagot 1:Sinusuportahan ito ng aming system, dapat itong gumamit ng isang 2W power amplifier, mas mainam na gamitin ang espesyal na mahabang transmitter antenna at dalawang mas mataas na receiver antenna.
COFDM-912T VS COFDM-908T
tanong 2: Gaano kalayo ang aking mararating kung gagamitin ko ang transmitter at receiver pareho sa lupa?
sagot: Sa paggamit ng lupa, ang transmitter at receiver ay dapat magkaroon ng isang tiyak na pagkakaiba sa taas upang magpadala ng malalayong distansya.
Ang pinakamahabang distansya ay lamang 2.5 kilometro kung ang transmitter at receiver ay parehong nasa parehong taas sa lupa. Pakitingnan ang aming test video; dahil ang transmitter at receiver ay inilalagay sa magkaibang antas, ang isang tabi ay nasa bundok, ang isa pang gilid ay nasa tabing dagat, ginamit namin ang default na dalawang watts upang magpadala 27 kilometro.
tanong 3: Sinusuportahan ba nito ang isang kapaligiran sa pagtatrabaho ng -20 degrees?
sagot: oo, suportado
tanong 4: Gusto kong bumili ng mga module at built-in ang aking mga device, pakisabi sa akin ang dimensyon ng mga module na iyon.
sagot: modelo ng SD: 6X7X1.6cm, HD na modelo: 5X7X1.6cm
tanong 5:Mayroon ka bang anumang espesyal na case shell para sa paggamit ng dagat?
sagot: oo, Mangyaring suriin ang larawan sa ibaba. (For the transmitter with a three-proof shell, Hindi nababasa, shockproof, anti-salt spray, 防水,防震,防盐雾)
Precautions for order customization
- dalas: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- antenna haba: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 o 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/.
Mga FAQ
Q. What is the video resolution?
A: HDMI 1080p.
Q. Does the transmitter power current is high?
A: Para sa transmiter, the different PA (power amplifier) sa loob, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
Para sa receiver, 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 kilometro. 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.
Halimbawa, 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 metro.
- 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 | ANG | 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. Halimbawa, 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 oras.
-
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.
-
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.
-
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.
- oo, the wireless video signal reception is improved by using Yagi and omni-directional antennas.
- oo, we can build the transmission of telemetry and video in COFDM-908T.
- Una, 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 Watts. 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.
oo, 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, 1080~860MHz, 1080~860MHz
Kasalukuyan, it does not support 1080i, nor does it support 4K transmission.
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