30Km jarak jauh COFDM HDMI Pemancar Video Wayarles FAQ
30Km long distance COFDM HDMI Wireless Video Transmitter Receiver Full Set Audio Video TX RX for UAV Drone 1080P 908T
30-150Km jarak jauh COFDM HDMI Pemancar Sistem Penghantaran Video Wayarles Penerima Set penuh Audio Video TX RX untuk Drone UAV UGV 1080P
Ciri
- sangat bersepadu, reka bentuk gabungan modular
- Menggunakan teknologi modulasi COFDM, H.264 image coding technology
- Ia boleh menghantar satu saluran HDMI 1080P (SDI pilihan) isyarat
- Kelewatan yang lebih rendah, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 milisaat.
- Pusingan semua komunikasi, tidak takut membina dinding
- Komunikasi berkelajuan tinggi antara perjalanan, the maximum moving speed can reach 600 km / jam.
- Kes aluminium jenis sink haba pemancar, kalis kejutan, Waterproof case is optional.
- Menyokong LOS dan Non-line-of-sight (NLOS) penghantaran mudah alih
- Jaraknya tidak kurang daripada 30 kilometer di bawah keadaan penglihatan ( Power amplifier and distance: 2 Watts PA 30km, 5 Watts PA 60KM, 10 Watts PA 100km, 20 Watts 150km at LOS)
- Penerimaan isyarat audio dan video segerak, multi-format HDMI1080P definisi tinggi pilihan, kualiti gambar output DVD definisi standard
- Penerima dapat merealisasikan fungsi rakaman video dan sandaran
- 128-penyulitan dan penyahsulitan bit AES
- Penyesuaian penuh tersedia
- Upgrade tool: Parameter Configure board
- penggunaan: UAV, Kenderaan & UGV
- modulasi: COFDM
- voltan kerja: DC11V-DC13V
- semasa bekerja: 0.5~ 2W (bergantung kepada PA yang berbeza)
- penghantaran kuasa: 0.5W~20W optional
Isi kandungan
permohonan
Produk ini digunakan terutamanya dalam pengumpulan teknikal dan pengumpulan bukti jabatan pemeriksaan keselamatan dan keselamatan awam, penghantaran gambar masa nyata kenderaan udara tanpa pemandu, kapal tanpa pemandu, geganti radio dan televisyen, siaran langsung radio dan televisyen: bidang penyiaran, siaran sukan, berita sosial, siaran langsung, studio, Ekspedisi mendaki gunung, dan aspek lain. Ia sesuai untuk transmisi masa nyata gambar berkualiti tinggi di pelbagai persekitaran yang kompleks seperti kawasan bandar, laut, dan gunung.
Spesifikasi Pemancar
kaedah modulasi | COFDM |
voltan kerja | DC11V ~ DC13V |
semasa bekerja | 0.5 Watt: ≤0.6A DC12V, 1 Watt: ≤0.8A DC12V, 2 Watt: ≤1.5A DC12V 5 Watt: ≤3.0A DC12V 10 Watt: ≤5.0A DC12V 20 Watt: ≤7.0A DC12V |
antara muka kawalan | antara muka RS232 standard, 8 Bit Data, 1 Sbit atas, Bit Pariti, Kadar baud: 19200 |
antara muka data telus, | penghantaran port bersiri telus sehala, 8 Bit Data, 1 Berhenti Sedikit, sokong Odd Parity, Bit Pariti, Pariti Tanpa Wayar, Kadar baud: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
kaedah penyulitan | menyokong penyulitan 128-bit |
pemetaan modulasi | QPSK (4QAM), 16QAM, 64QAM |
pembetulan ralat ke hadapan | 1/2 2/3 3/4 5/6 7/ 8 |
selang Guard | 1/32 1/16 1/8 1/4 |
Nombor pembawa | 2K |
jalur lebar kekerapan | 2 / 3 / 4 / 5 / 6 / 7 / 8M Boleh laras |
aliran kod penghantaran | 2000kbs ~ 20000kbs Laras |
menghantar kuasa | 0.5 / 1 / 2 / 5 / 10 Watt |
frekuensi penghantaran | Sebarang Frekuensi Boleh Disesuaikan, Langkah 1MHz |
kebosanan kuasa | dalam jarak 10MHz tanpa wayar daripada 0.2dB |
nisbah bahu | kuasa output 27dB, nisbah bahu lebih baik daripada -30dB |
harmonik kedua | ≤-45dB |
MORE | 32Db |
memasukkan video | 720×480 60Saya(NTSC), 720×576 50Saya(PAL), 720 50P, 720 60P, 1080 50Saya, 1080 60Saya, 1080 24P, 1080 25P, 1080 30P, 1080 50P, pelbagai mod bersifat adaptif. |
Antara Muka HD | HDMI, SDI pilihan |
format pengekodan video | H.264 |
standard perlindungan | casis jenis radiator aluminium semua, anti-karat, reka bentuk kalis kejutan |
Saiz keseluruhan | 9 x 6.4 x 2.3 cm |
Berat keseluruhan | ≤0.20KG |
Spesifikasi Penerima
Parameter penerima HD multi-bandwidth yang dipasang pada rak Mesin | |
Terima julat frekuensi | 170-860MHz VHF&UHF |
lebar jalur frekuensi | 2/3/4/5/6/7/8MHz, pilihan |
Tahap input RF | -94dBm ~ -15dBm (8M bandwidth)/-98dBm ~ -15dBm (2M bandwidth) |
RF input impedans | 50 ohm |
RF penyambung input | N-kepala |
mod demodulasi | COFDM |
mod buruj | QPSK, 16QAM, 64QAM (pilihan) |
pembetulan ralat ke hadapan | 1/2, 2/3, 3/4, 5 /6,7/8 (pilihan) |
nombor pembawa | 2k, |
selang pengawal | 1/32, 1/16, 1/8, 1/4 (pilihan) |
penyahkodan video | MPEG-2MP@ML/H.264 |
Nisbah aspek | 4: 3 16: 9 |
gambar video adalah | 720 * 576 @ 8MHz 1080P @ 60P |
mod output audio | stereo tidak seimbang 300 / 200mv |
output audio | output2Audio + 2output video |
voltan operasi | AC220V / DC12V <0.5A |
Suhu Operasi | – 20℃ ~ + 50 ℃ |
Saiz penampilan | 480*260*45 (1U) casis |
berat peralatan | 1.5kg (bahasa dua hala 2.5Kg) |
Catatan: penyambung lalai adalah HDMI, jika anda memerlukan model yang lebih murah, penyambung untuk penyambung video Kuning CVBS 720p HDMI, sila Lihat di sini untuk model lain.
Penerangan:
– Peranti ini menggunakan teknologi COFDM, yang menyatukan antena penghantaran, modulasi digital, audio, dan fungsi video.
– Saiz padat, api kecil, dan jarak penghantaran yang panjang
– serasi dengan kamera kecil, dapat membolehkan penangkapan dan penghantaran gambar HD
– julat penghantaran akan lebih panjang jika ia menggunakan antena keuntungan tinggi
– Julat penghantaran: 5000m (tanpa sebarang gangguan)/500M dengan rintangan mengganggu
ciri-ciri:
– Saiz padat, reka bentuk modulasi
– Mengamalkan teknologi modulasi COFDM, Teknologi pemampatan gambar MPEG-2
– Komunikasi omnidirectional
– komunikasi berkelajuan tinggi membolehkan penghantaran audio dan video masa nyata
– Sarung aluminium yang tahan kejutan
– Penghantaran NLOS
spesifikasi:
pemancar:
– saiz:90x64x23mm
– berat badan:200g
– antena:22mm
penerima
– saiz: 87x70x20mm
– berat badan:200g
– Ketinggian antena:42.5cm (boleh bengkok)
Spesifikasi teknikal
– modulasi: COFDM
– voltan kerja: DC11V-DC13V
– semasa bekerja:0.5The: kurang daripada 0.6A @ DC12V
– port kawalan: pelabuhan standrad RS232. 8-bit data bit, 1-berhenti sedikit, Kadar baud:19200, menyokong pemeriksaan pariti ganjil
– port data penghantaran:8 bit data bit,1 berhenti sedikit, Kadar baud,1200,2400,4800,9600,19200,38400,57600,115200,230400
– penyulitan: sokongan 128 penyulitan
– pemetaan modulasi: QPSK (4QAM),16QAM,64QQAM
– pembetulan ralat ke hadapan: 1/2,2/3,3/4,5/6,7/8
– Lindungi selang masa: 1/32,1/16,1/8,1/4
– Nombor pembawa:2K
– jalur lebar kekerapan:2/3/4/5/6/7/8M boleh laras
– aliran pengangkutan:2000kbs-20000kbs boleh laras
– kuasa penghantaran: 2The
– frekuensi penghantaran: boleh disesuaikan, langkah adalah 1Mhz
– kerataan kuasa: kurang daripada 0.2db dalam 10Mhz
– harmonik kedua: kurang daripada -45db
– MORE:32db
– memasukkan video:1Vp-p,75ohm
– Format program video: MPEG-2
– Kualiti video: 720×576 apabila melebihi 4M
– format: NTSC dan PAL dapat ditetapkan
Spesifikasi teknikal penerima:
– Julat frekuensi penerima: 170-860Mhz, VHF dan UHF
– jalur lebar kekerapan: 2/3/4/5/6/7/8 Mhz, laras
– Tahap input RF:-94dbm-0dbm pada 8M / -98dbm-0dbm pada 2M
– RF input impedans: 50ohm
– Port input RF: SMA
– modulasi: COFDM
– Cara buruj: QPSK,16QAM,64QAM pilihan
– pembetulan ralat ke hadapan: 1/2,2/3,3/4,5/6,7/8 pilihan
– Nombor pembawa:2K
– Jurang perlindungan:1/32,1/16,1/8,1/4
– Kadar skrin:4:3,16:9
– gambar video:720×576 @ 6Mhz
– Port output audio dan video: standard 3.5 pelabuhan
– voltan kerja: DC12V 0.3A
Pakej termasuk:
– 1 x pemancar
– 1 x penerima
– 1 tetapkan aksesori x
30Km jarak jauh COFDM HDMI Pemancar Video Wayarles
FAQ
Soalan 1: Saya memerlukan sekurang-kurangnya jarak 30km dari udara ke darat untuk UAV UGV USV.
jawapan 1:Sistem kami menyokongnya, ia harus menggunakan penguat kuasa 2W, adalah lebih baik untuk menggunakan antena pemancar panjang khas dan dua antena penerima yang lebih tinggi.
COFDM-912T VS COFDM-908T
Soalan 2: Sejauh mana saya boleh pergi jika saya menggunakan pemancar dan penerima kedua-duanya di atas tanah?
jawapan: Pada penggunaan tanah, pemancar dan penerima mesti mempunyai perbezaan ketinggian tertentu untuk menghantar jarak jauh.
Jarak terjauh sahaja 2.5 kilometer jika pemancar dan penerima kedua-duanya berada pada ketinggian yang sama di atas tanah. Sila lihat video ujian kami; kerana pemancar dan penerima diletakkan pada tahap yang berbeza, sebelah ada di gunung, sebelah lagi di tepi laut, kami menggunakan dua watt lalai untuk menghantar 27 kilometer.
Soalan 3: Adakah ia menyokong persekitaran kerja -20 darjah?
jawapan: Ya, disokong
Soalan 4: Saya ingin membeli modul dan peranti terbina dalam saya, sila beritahu saya dimensi modul itu.
jawapan: model SD: 6X7X1.6cm, model HD: 5X7X1.6cm
Soalan 5:Adakah anda mempunyai sebarang cengkerang kes khas untuk kegunaan marin?
jawapan: Ya, Sila semak gambar di bawah. (For the transmitter with a three-proof shell, kalis air, kalis kejutan, anti-salt spray, 防水,防震,防盐雾)
Precautions for order customization
- kekerapan: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- panjang antena: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 atau 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/.
Soalan Lazim
Q. What is the video resolution?
A: HDMI 1080p.
Q. Does the transmitter power current is high?
A: Untuk pemancar, the different PA (penguat kuasa) dalam, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
Untuk penerima, 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 kilometer. 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.
Sebagai contoh, 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, dan lain-lain.
- 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 meter.
- 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 |
1The | >30Km | <500m |
5The | >60Km | <1500m |
20The | >120km | <3000m |
50The | >200Km | <5000m |
100The | >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. Sebagai contoh, 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 Jam.
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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.
-
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.
- Ya, the wireless video signal reception is improved by using Yagi and omni-directional antennas.
- Ya, we can build the transmission of telemetry and video in COFDM-908T.
- Pertama, 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 watt. 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.
Ya, 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
Pada masa ini, it does not support 1080i, nor does it support 4K transmission.
20km di atas laut ujian pemancar dan penerima video wayarles HDMI untuk bot atau dari pantai ke kapal
Jarak jauh 20 Pemancar dan Penerima Penguat Kuasa Watts memerlukan bekalan kuasa 12V 6A
ulasan
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