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 ntev COFDM HDMI Transmitter Wireless Video Transmission system Receiver full Set Audio Video TX RX for UAV Drone UGV 1080P
feature
- heev kev, qauv tsim ua ke tsim
- Kev siv COFDM tes taws los piav cov thev naus laus zis, H.264 image coding technology
- Nws tuaj yeem xa ib lub channel ntawm 1080P HDMI (xaiv tau SDI) teeb liab
- Tsawg qeeb dua, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 milliseconds.
- Tag nrho cov-round kev sib txuas lus, tsis ntshai ntawm lub tsev phab ntsa
- Kev sib txuas lus nrawm heev ntawm kev mus ncig ua si, the maximum moving speed can reach 600 km / teev.
- Lub tshuab hloov hluav taws xob kub ntim txhuas cov ntaub ntawv txhuas, shockproof, Waterproof case is optional.
- Txhawb LOS thiab Tsis-kab-ntawm-pom pom (NLOS) mobile kis tau tus mob
- Qhov kev ncua deb tsis tsawg dua 30 kilometers raws li cov xwm txheej ntawm kab-ntawm-pom ( 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 video Pib ntsais koj teeb, High-txhais HDMI1080P ntau hom kev xaiv, tus qauv txhais cov zis DVD duab zoo
- Lub txais yuav tuaj yeem paub cov ntaubntawv povthawj siv video thiab thaub qab haujlwm
- 128-ntsis AES encryption thiab decryption
- Tag nrho customization 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 qhov sib txawv PA)
- Kev xa hluav taws xob: 0.5W~20W optional
Cov Lus Qhia
Daim ntawv thov
Cov khoom no yog siv rau hauv kev kuaj xyuas kev soj ntsuam thiab cov ntaub ntawv pov thawj ntawm kev ruaj ntseg ntawm pej xeem thiab kev nyab xeeb kev soj ntsuam, real-time duab kis ntawm cov tsheb tsis muaj tsheb khiav ceev, cov nkoj uas tsis muaj neeg tsav, xov tooj cua thiab saib xov tooj cua, xov tooj cua thiab TV nyob tshaj tawm: tshaj tawm hauv xov, kev ua si tawm, social xov xwm, huab cua nyob, studio, mus ncig ua si sab nrauv, thiab lwm yam. Nws yog qhov tsim nyog rau kev xa xov hauv lub sijhawm tiag tiag los ntawm cov duab ua tau zoo hauv ntau qhov chaw muaj xws li hauv nroog loj, hiav txwv, thiab roob.
Transmitter Specification
tes taws los piav txujci | COFDM |
ua haujlwm voltage | 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 DC 12V 10 Watts: ≤5.0A DC12V 20 Watts: ≤7.0A DC12V |
tswj interface | tus qauv RS232 interface, 8 Cov ntaub ntawv khoom, 1 Ssab saum toj Bit, Parity Ntsis, Tus nqi Baud: 19200 |
pob tshab cov ntaub ntawv interface, | seem ib seem pob hluav taws xob xa mus los, 8 Cov ntaub ntawv khoom, 1 Txhob Ntshaw, txhawb nqa Parity Parity, Parity Ntsis, Wireless Parity, Tus nqi Baud: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
encryption txoj kev | txhawb 128-ntsis encryption |
tes hauj lwm daim phiaj qhia | QPSK (4QAM), 16QAM, 64QAM |
pem hauv ntej kev ua yuam kev kho | 1/2 2/3 3/4 5/6 7/ 8 |
khwb luv | 1/32 1/16 1/8 1/4 |
Tus xov tooj tus neeg nqa khoom | 2K |
Zaus bandwidth | 2 / 3 / 4 / 5 / 6 / 7 / 8M Hloov Kho |
kis tus lej kwj | 2000kbs ~ 20000kbs Kho tau |
kis hwj chim | 0.5 / 1 / 2 / 5 / 10 Watts |
kis zaus | Any Frequency Customizable, Kauj Ruam 1MHz |
lub zog flatness | tsis pub dhau 10MHz bandless ntau dua 0.2dB |
piv ntawm xub pwg | tso zis zog ntawm 27 dB, lub xub pwg piv tau zoo dua -30dB |
tus thib ob harmonic | -45dB |
NTXIV | 32Db |
input video | 720×480 60kuv(NTSC), 720×576 50kuv(NPAWG), 720 50P, 720 60P, 1080 50kuv, 1080 60kuv, 1080 24P, 1080 25P, 1080 30P, 1080 50P, ntau hom qauv yog yoog. |
HD interface | HDMI, SDI yeem |
video encoding hom ntawv | H.264 |
kev tiv thaiv tus qauv | txhua-txhuas radiator-hom chassis, anti-xeb, poob siab-tsim qauv |
Zuag qhia tag nrho loj | 9 x 6.4 x 2.3 cm |
Qhov hnyav tag nrho | ≤0.20KG |
Cov Txais Nyiaj Txais Txais
Tshuab Khib-mounted ntau bandwidth HD txais tsis | |
Txais ntau zaus | 170-860MHz VHF&UHF |
zaus bandwidth | 2/3/4/5/6/7/8MHz, yeem |
Qib RF nkag | -94dBm ~ -15dBm (8M bandwidth)/-98dBm ~ -15dBm (2M bandwidth) |
RF tswv yim impedance | 50 ohms |
RF tswv yim connector | N-taub hau |
demodulation hom | COFDM |
hnub ci lub hom | QPSK, 16QAM, 64QAM (yeem) |
pem hauv ntej kev ua yuam kev kho | 1/2, 2/3, 3/4, 5 /6,7/8 (yeem) |
cov cab kuj tus xov tooj | 2k, |
khwb luv | 1/32, 1/16, 1/8, 1/4 (yeem) |
video seev suab | MPEG-2MP@ML/H.264 |
nam piv | 4: 3 16: 9 |
daim duab video muaj | 720 * 576 @ 8MHz 1080P @ 60P |
audio output hom | lub tso suab tsis txaus 300 / 200mv |
suab tso zis | output2Audio + 2Video tso zis |
kev khiav hauj lwm voltage | AC220V / DC12V <0.5A |
Kev khiav hauj lwm kub | – 20~ ~ + 50 ℃ |
Pom qhov loj me | 480*260*45 (1U) chassis |
cov khoom hnyav | 1.5kg (ob-txoj lus 2.5Kg) |
Ceeb toom: lub neej ntawd txuas yog HDMI, yog tias koj xav tau tus qauv pheej yig dua, ib lub qhov txuas rau CVBS Daj video connector 720p HDMI, thov Khij ntawm no for another model.
hauj lwm:
– Cov cuab yeej no siv tshuab COFDM, uas sib koom ua ke kav hlau txais xov, tes taws los piav digital, suab, and video function.
– Kev cog lus me me, me tshav kub, thiab cov kis tau ntev
– sib haum nrog lub koob yees duab me me, tuaj yeem ua kom HD duab ntes thiab kis tau tus mob
– qhov kis tau tus mob yuav ntev dua yog tias nws txais cov kav hlau txais xov siab
– Ntau kis: 5000m (tsis muaj kev cuam tshuam dab tsi)/500M nrog cov teeb meem cuam tshuam
nta:
– Kev cog lus me me, tes taws los tsim qauv
– Txais yuav COFDM kev hloov kho thev naus laus zis, MPEG-2 duab com txheej txheem tshuab
– Omnidirectional kev sib txuas lus
– kev sib txuas lus ceev xov xwm ntawm lub suab thiab xa tawm video
– Aluminium rooj plaub uas yog shockproof
– NLOS kev xa khoom
Specifications:
transmitter:
– loj:90x64x23mm
– hnyav:200g
– kav hlau txais xov:22hli
receiver
– loj: 87x70x20mm
– hnyav:200g
– Kav hlau txais xov qhov siab:42.5cm (tuaj yeem khoov)
Cov yam ntxwv kev
– Tes taws los piav: COFDM
– ua haujlwm voltage: DC11V-DC13V
– Ua hauj lwm tam sim no:0.5W: tsawg dua 0.6A @ DC12V
– tswj chaw nres nkoj: sawv chaw nres nkoj RS232. 8-cov ntaub ntawv me me, 1-ntsis nres me ntsis, Baud tus nqi:19200, txhawb nqa parity khib
– cov ntaub ntawv xa mus:8 cov ntaub ntawv me me,1 ntsis nres me ntsis, Baud tus nqi,1200,2400,4800,9600,19200,38400,57600,115200,230400
– encryption: kev pab txhawb nqa 128 encryption
– Tes taws los piav kuas: QPSK (4QAM),16QAM,64QQAM
– Forward yuam kev kho: 1/2,2/3,3/4,5/6,7/8
– Tiv thaiv lub caij nyoog: 1/32,1/16,1/8,1/4
– Tus xov tooj tus neeg nqa khoom:2K
– Zaus bandwidth:2/3/4/5/6/7/8M adjustable
– thauj thauj:2000kbs-20000kbs tuaj yeem hloov kho
– fais fab kis: 2W
– kis zaus: yuav yog Mekas, kauj ruam yog 1Mhz
– hwj chim flatness: tsawg dua 0.2db li ntawm 10Mhz
– Ob txhais harmonic: tsawg dua -45db
– NTXIV:32db
– input video:1Vp-p,75ohm
– Daim video ua program: MPEG-2
– Yees duab zoo: 720×576 thaum saum toj no 4M
– hom: NTSC thiab PAL tuaj yeem teeb tsa
Txais cov lus qhia tshwj xeeb hauv tshuab:
– Tau txais ntau zaus: 170-860Mhz, VHF thiab UHF
– Zaus bandwidth: 2/3/4/5/6/7/8 Mhz, adjustable
– Qib RF nkag:-94dbm-0dbm ntawm 8M / -98dbm-0dbm ntawm 2M
– RF tswv yim impedance: 50ohm
– Chaw nres nkoj nkag RF: High School
– tes taws los piav: COFDM
– Txoj kev xaib txoj kev: QPSK,16QAM,64QAM yeem
– Forward yuam kev kho: 1/2,2/3,3/4,5/6,7/8 yeem
– Tus xov tooj tus neeg nqa khoom:2K
– Kev tiv thaiv qhov sib txawv:1/32,1/16,1/8,1/4
– Tshuaj ntsuas tus nqi:4:3,16:9
– daim duab vis dis aus:720×576 @ 6Mhz
– Suab thiab video tso zis chaw nres nkoj: txheem 3.5 qhov chaw nres nkoj
– ua hauj lwm voltage: DC12V 0.3A
Pob muaj nrog:
– 1 x ntsuas pa
– 1 x txais
– 1 teeb x accessories
30Km long distance COFDM HDMI Wireless Video Transmitter
FAQ
Lo lus nug 1: Kuv xav tau yam tsawg kawg 30km ntawm huab cua mus rau hauv av rau UAV UGV USV.
teb 1:Peb kev txhawb nqa nws, nws yuav tsum siv lub zog ua haujlwm 2W fais fab loj, Nws yog qhov zoo dua los siv cov kav hlau txais xov ntev tshwj xeeb thiab ob lub kav hlau txais xov siab dua.
COFDM-912T VS COFDM-908T
Lo lus nug 2: Kuv tuaj yeem mus deb npaum li cas yog tias kuv siv lub transmitter thiab receiver ob qho tib si hauv av?
teb: Hauv av siv, lub transmitter thiab receiver yuav tsum muaj qee qhov siab sib txawv kom xa mus ntev.
Qhov deb tshaj plaws tsuas yog 2.5 kilometers yog hais tias lub transmitter thiab receiver yog ob qho tib si nyob rau tib qhov siab nyob rau hauv av. Thov saib peb qhov kev sim video; vim hais tias lub transmitter thiab receiver tau muab tso rau ntawm ntau theem, ib sab yog nyob saum roob, lwm sab yog ntawm ntug hiav txwv, peb siv lub neej ntawd ob watts xa mus 27 mais.
Lo lus nug 3: Nws puas txhawb ib puag ncig ua haujlwm ntawm -20 degrees?
teb: Yog, txhawb
Lo lus nug 4: I want to buy modules and built-in my devices, please tell me the dimension of that modules.
teb: SD model: 6X7X1.6cm, HD model: 5X7X1.6cm
Lo lus nug 5:Do you have any special case shells for marine use?
teb: Yog, Thov xyuas daim duab hauv qab no. (For the transmitter with a three-proof shell, waterproof, shockproof, anti-salt spray, 防水,防震,防盐雾)
Ceev faj rau kev txiav txim customization
- zaus: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- Kav hlau txais xov ntev: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 los yog 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 (lub zog amplifier) sab hauv, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
Rau 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 mais. 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 li, 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 meters.
- 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 | LUB | 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. Piv txwv li, 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.
-
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.
- 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.
- Ua ntej, 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, 1080Tuning Kauj ruam loj, 1080Tuning Kauj ruam loj
Tam sim no, it does not support 1080i, nor does it support 4K transmission.
20km hla hiav txwv HDMI wireless video transmitter thiab receiver xeem rau nkoj los yog los ntawm ntug dej rau nkoj
Long-range 20 Watts Power Amplifier Transmitter and Receiver needs a 12V 6A power supply
Xyuas
Muaj cov kev xyuas tsis tau.