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 yees duab Transmission lawv Receiver tag nrho teev Audio yees duab TX RX rau UAV Drone UGV 1080P
Feature
- Integrated, modular tag nrho tsim
- Siv COFDM modulation tshuab, H.264 image coding technology
- Nws yuav transmit ib channel ntawm 1080P HDMI (xaiv SDI) teeb liab
- qeeb, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 milliseconds.
- Tagnrho-muab kev sib txuas lus, tsis ntshai phab ntsa phab ntsa
- Kev sib txuas lus ntawm mus txawv tebchaws, the maximum moving speed can reach 600 km/teev.
- Transmitter tshav kub daim tawv nqaij aluminum rooj plaub, shockproof, Waterproof case is optional.
- Kev them nyiaj yug POOB thiab cov-line-of-sight (NLOS) mobile transmission
- Tus nyob deb li cas yuav tsis tsawg tshaj li 30 kilometers nyob rau hauv cov mob ntawm line-of-sight ( Power amplifier and distance: 2 Watts PA 30km, 5 Watts PA 60KM, 10 Watts PA 100km, 20 Watts 150km at LOS)
- Synchronous txais tos ntawm audio thiab yees duab signals, High-definition HDMI1080P multi-format xaiv, txheem-txhais cov zis DVD duab zoo
- Tus receiver yuav twb paub lawm yees duab teev thiab backup functions
- 128-ME NTSIS encryption thiab decryption
- Tag nrho cov kev cai muaj
- Upgrade tool: Parameter Configure board
- Siv: UAV, tsheb & UGV
- Tes taws los piav: COFDM
- Ua hauj lwm voltage: DC11V-DC13V
- Ua hauj lwm tam sim no: 0.5£2W (nyob ntawm seb txawv pa)
- Transmission fais fab tuag: 0.5W~20W optional
Cov Txheej Txheem
Daim Ntawv Thov Kev Pab
Qhov khoom no mas siv nyob rau hauv cov reconnaissance thiab pov thawj sau los ntawm pej xeem ruaj ntseg thiab kev ruaj ntseg soj ntsuam cov tuam tsev, Real-time duab transmission ntawm unmanned aerial tsheb, unmanned ships, xov tooj cua thiab TV relay, xov tooj cua thiab TV nyob broadcasts: tshaj tawm hauv xov, kev ua si tshaj tawm hauv xov, xov xwm kev sib raug zoo, huab cua, studio, mountaineering Expedition, thiab lwm yam kev sib nrauj. Nws yog suitable rau real-time mobile transmission ntawm cov dluab zoo nyob rau ntau txoj kev xws li urban cheeb tsam xws li urban cheeb tsam, caij ntuj no, roob.
Transmitter Specification
kev sib sau ua kom sib zog | COFDM |
ua hauj lwm | DC11V-DC13V |
ua hauj lwm tam sim no | 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 |
interface | txheem RS232 interface, 8 Cov Ntaub Ntawv Bits, 1 Ssaum toj kawg nkaus, Parity tom, Baud tus nqi: 19200 |
pob tshab cov ntaub ntawv interface, | Ib-txoj kev transparent serial chaw nres nkoj transmission, 8 Cov Ntaub Ntawv Bits, 1 nres, Kev them nyiaj yug Odd Parity, Parity tom, Wireless Parity, Baud tus nqi: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
encryption txoj kev | kev them nyiaj yug 128-bit encryption |
modulation mapping | QPSK (4Qam), 16Qam, 64Qam |
tom ntej yuam kev | 1/2 2/3 3/4 5/6 7/ 8 |
Khwb interval | 1/32 1/16 1/8 1/4 |
naj npawb | 2K |
Frequency bandwidth | 2 / 3 / 4 / 5 / 6 / 7 / 8M Adjustable |
kwj dej | 2000kbs.2000kbs Adjustable |
transmit fais fab tuag | 0.5 / 1 / 2 / 5 / 10 Watts |
kis tau tus kab mob no | Txhua zaus Cov Kev Sib Raug Zoo, Kauj Ruam 1MHz |
hwj huam flatness | Tsis pub dhau 10MHz bandless tshaj 0.2dB |
xub pwg | tso zis ntawm 27dB, Lub xub pwg piv yog zoo dua-30dB |
qhov thib ob harmonic | ≤-45dB |
MER | 32Db |
input yees duab | 720×480 60Kuv(NTSC), 720×576 50Kuv(NPAWG), 720 50P, 720 60P, 1080 50Kuv, 1080 60Kuv, 1080 24P, 1080 25P, 1080 30P, 1080 50P, Hom yog adaptive. |
HD Interface | HDMI, SDI xaiv |
Yees duab encoding daim ntawv | H.264 |
kev tiv thaiv | all-aluminum radiator-hom chassis, los tiv thaiv corrosion, Poob siab-pov thawj tsim |
Zuag qhia tag nrho raws li cov | 9 x 6.4 x 2.3 cm |
Zuag qhia tag nrho | ≤0.20KG |
Receiver Specification
Tshuab Rack-mounted multi-bandwidth HD receiver parameters | |
Tau txais ntau zaus | 170-860MHz VHF&UHF |
zauv qhab bandwidth | 2/3/4/5/6/7/8MHz, yeem |
RF input theem | -94dBm.-15dBm (8M bandwidth)/-98dBm .-15dBm (2M bandwidth) |
RF input impedance | 50 txajmuag |
RF input connector | N-taub hau |
demodulation hom | COFDM |
constellation hom | QPSK, 16Qam, 64Qam (yeem) |
tom ntej yuam kev | 1/2, 2/3, 3/4, 5 /6,7/8 (yeem) |
naj npawb | 2k, |
kev sib raug zoo | 1/32, 1/16, 1/8, 1/4 (yeem) |
yees duab decoding | MPEG-2MP@ML/H.264 |
nam piv | 4: 3 16: 9 |
Yees duab yog yees duab | 720 * 576 @ 8MHz 1080P @ 60P |
tso zis | stereo unbalanced 300 / 200mv |
tso zis | tso zis + 2Yees duab tso zis |
kev khiav hauj lwm | AC220V / DC12V <0.5A |
Kev khiav hauj lwm muaj kub | – 20°C.+50°C |
tsos mob | 480*260*45 (1U) chassis |
luj | 1.5kg (Ob-txoj kev 2.5Kg) |
Ceeb toom: Tus default connector yog HDMI, Yog hais tias koj xav tau tus qauv cheaper, Ib connector rau CVBS Daj yees duab connector 720p HDMI, thov Xyuas ntawm no rau lwm tus qauv.
Hauj lwm lawm:
– No ntaus ntawv adopts COFDM tshuab, uas integrates transmission antenna, cov modulation, suab, thiab yees duab muaj nuj nqi.
– Compact loj, tshav kub kub, ntev mus ntev
– compatible nrog lub koob yees duab me me, Yuav pab tau HD duab ntes thiab transmission
– Tus transmission ntau yam yuav ntev yog hais tias nws adopts siab antenna
– Kis tau tus kab mob no: 5000minyuam (tsis muaj kev cuam tshuam)/500M nrog obstacles cuam tshuam
Nta:
– Compact loj, kev tsim kom muaj
– Adopts COFDM modulation tshuab, MPEG-2 duab com compression tshuab
– Omnidirectional kev sib txuas lus
– High-speed sib txuas lus enables real-time audio thiab yees duab transmission
– Ib rooj plaub aluminum uas yog shockproof
– NLOS transmission
Qhia txog tej yam tshwj xeeb:
transmitter:
– Raws li cov:90x64x23m
– luj:200g
– kav hlau txais xov:22hli
receiver
– luaj li cas: 87x70x20m
– luj:200g
– Antenna height:42.5cm (rawv)
Technical specification
– Tes taws los piav: COFDM
– ua hauj lwm: DC11V-DC13V
– Ua hauj lwm tam sim no:0.5W: tsawg tshaj 0.6A @ DC12V
– tswj chaw nres nkoj: standrad RS232 chaw nres nkoj. 8-cov ntaub ntawv tom, 1-nres, Baud tus nqi:19200, kev them nyiaj yug parity kos
– transmission cov ntaub ntawv chaw nres nkoj:8 cov ntaub ntawv tom,1 nres, Baud tus nqi,1200,2400,4800,9600,19200,38400,57600,115200,230400
– encryption: kev them nyiaj 128 encryption
– Modulation mapping: QPSK (4Qam),16Qam,64QQAM
– Pem hauv ntej yuam kev correction: 1/2,2/3,3/4,5/6,7/8
– Tiv thaiv kom txhob muaj kev sib cuag: 1/32,1/16,1/8,1/4
– naj npawb:2K
– Frequency bandwidth:2/3/4/5/6/7/8kho tau
– thauj kwj dej:2000kbs-2000kbs adjustable
– transmission: 2W
– kis tau tus kab mob no: kev cai dab khiav, kauj ruam yog 1Mhz
– hwj huam flatness: Tsawg tshaj 0.2db tsis pub dhau10Mhz
– thib ob: tsawg tshaj 45db
– MER:32db
– input yees duab:1Vp-h-p,75ohm
– Yees duab kev pab them nqi: MPEG-2
– Yees duab zoo: 720×576 saum 4M
– Hom Ntawv: NTSC thiab PAL yuav muab teev
Receiver technical specification:
– Receiver frequency ntau yam: 170-860Mhz, VHF thiab UHF
– Frequency bandwidth: 2/3/4/5/6/7/8 Mhz, kho kom haum
– RF input theem:-94dbm-0dbm ntawm 8M/-98dbm-0dbm ntawm 2M
– RF input impedance: 50ohm
– RF input chaw nres nkoj: SMA
– modulation: COFDM
– Txoj kev constellation: QPSK,16Qam,64QAM xaiv
– Pem hauv ntej yuam kev correction: 1/2,2/3,3/4,5/6,7/8 yeem
– naj npawb:2K
– Tiv thaiv kis:1/32,1/16,1/8,1/4
– Screen tus nqi:4:3,16:9
– yees duab:720×576 @6Mhz
– Audio thiab yees duab tso zis chaw nres nkoj: txheej txheem 3.5 chaw nres nkoj
– Ua hauj lwm voltage: DC12V 0.3A
Pob muaj nyob:
– 1 x x
– 1 x x x x
– 1 x accessories
30Km long distance COFDM HDMI Wireless Video Transmitter
FAQ
Lus nug 1: Kuv xav tau tsawg kawg yog 30km ntau yam los ntawm huab cua rau hauv pem teb RAU lub UAV UGV USV.
Teb 1:Peb lub kaw lus txhawb nws, Nws yuav tsum siv lub hwj huam 2W amplifier, Nws zoo siv cov tshwj xeeb ntev transmitter antenna thiab ob receiver antennas.
COFDM-912T VS COFDM-908T
Lus nug 2: Yuav ua li cas kuv thiaj tau yog hais tias kuv siv cov transmitter thiab receiver ob leeg rau hauv av?
Teb: Hauv pem teb siv, Tus transmitter thiab receiver yuav tsum muaj ib qhov siab sib txawv rau transmit ntev nyob deb li cas.
Qhov ntev nyob deb li cas xwb 2.5 kilometers yog tus transmitter thiab receiver yog ob leeg tib qhov siab rau hauv pem teb. Thov saib peb kev kuaj yees duab; Vim hais tias cov transmitter thiab receiver muab tso rau ntau theem, Ib sab yog nyob saum roob, Lwm sab yog ntawm lub seaside, Peb siv cov default ob watts transmit 27 kilometers.
Lus nug 3: Nws puas txhawb ib cheeb tsam ntawm -20 degrees?
Teb: Yog, txaus siab
Lus nug 4: Kuv xav yuav modules thiab built-in kuv li lawm, Thov qhia kuv qhov dimension ntawm ntawd modules.
Teb: SD qauv: 6X7X1.6cm, HD qauv: 5X7X1.6cm
Lus nug 5:Do you have any special case shells for marine use?
Teb: Yog, Thov mus saib rau hauv qab daim duab. (For the transmitter with a three-proof shell, dej waterproof, shockproof, anti-salt spray, 防水,防震,防盐雾)
Precautions for order customization
- Zaus: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- Antenna length: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 los sis 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/.
FAQs
Q. What is the video resolution?
A: HDMI 1080P.
Q. Does the transmitter power current is high?
A: rau transmitter, the different PA (hwj huam amplifier) Hauv, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
rau receiver, the current is only 0.3A (300minyuam)
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 kilometers. 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.
Piv txwv, 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, thiab lwm yam.
- 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 xov.
- 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.
PAJ | POOB | NLOS |
500nyuj | >10km | <300minyuam |
1W | >30km | <500minyuam |
5W | >60km | <1500minyuam |
20W | >120riam | <3000minyuam |
50W | >200km | <5000minyuam |
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. Piv txwv, 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 teev.
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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. Vim COFDM yog ib txoj kev 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.
- Yog, the wireless video signal reception is improved by using Yagi and omni-directional antennas.
- Yog, we can build the transmission of telemetry and video in COFDM-908T.
- Thawj, 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.
Yog, 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
Currently, it does not support 1080i, nor does it support 4K transmission.
20km hla hiav txwv HDMI wireless yees duab transmitter thiab receiver kuaj rau lub nkoj los ntawm ntug dej mus nkoj
Long-range 20 Watts Power Amplifier Transmitter and Receiver needs a 12V 6A power supply
Kev
Muaj cov tsis muaj kev kaj.