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 langa vegalengd COFDM HDMI sendandi Þráðlaust myndbandssendingarkerfi Móttökutæki fullt sett Audio Video TX RX fyrir UAV Drone UGV 1080P
Lögun
- mjög samþætt, mát sameinuð hönnun
- Notkun COFDM mótunartækni, H.264 image coding technology
- Það getur sent eina rás af 1080P HDMI (valfrjálst SDI) merki
- Minni töf, the minimum end-to-end delay is 200~250 milliseconds, We also have a super-lower latency model of less than 30-50 millisekúndur.
- Allur-umferð samskipti, Ekki hræddur við að byggja veggi
- Háhraðasamskipti milli ferðalaga, the maximum moving speed can reach 600 km / klst.
- Senda hitaklefa gerð álhylki, höggheldur, Waterproof case is optional.
- Stuðningur við LOS og Non-line-of-sight (NLOS) flutningur farsíma
- Fjarlægðin er ekki minni en 30 kílómetra undir ástandi sjónlínu ( Power amplifier and distance: 2 Watts PA 30km, 5 Watts PA 60KM, 10 Watts PA 100km, 20 Watts 150km at LOS)
- Samstillt móttaka hljóð- og myndmerkja, háskerpu HDMI1080P multi-snið valfrjálst, DVD-myndgæði með venjulegri skilgreiningu
- Viðtækið getur gert sér grein fyrir myndbandsupptöku og afritunaraðgerðum
- 128-bit AES dulkóðun og dulkóðun
- Full aðlögun í boði
- Upgrade tool: Parameter Configure board
- Nota: UAV, Ökutæki & UGV
- mótum: COFDM
- vinna spennu: DC11V-DC13V
- vinna núverandi: 0.5~ 2W (fer eftir mismunandi PA)
- Sendingarafl: 0.5W~20W optional
Efnisyfirlit
Umsókn
Þessi vara er aðallega notuð í tækniskönnunar- og sönnunargögnum hjá öryggis- og öryggiseftirlitsdeildum, rauntímamyndasending ómannaðra loftfara, mannlaus skip, gengi útvarps og sjónvarps, beinar útsendingar í útvarpi og sjónvarpi: útsendingarvöllur, íþróttir útsendingu, félagslega fréttir, loft í beinni, stúdíó, fjallgönguleiðangur, og aðra þætti. Það er hentugur fyrir rauntíma flutning á hágæða myndum í ýmsum flóknu umhverfi eins og þéttbýli, höf, og fjöll.
Sendiforskrift
mótunaraðferð | COFDM |
vinnuspenna | DC11V ~ DC13V |
vinnandi straumur | 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 |
stjórnviðmót | venjulegt RS232 viðmót, 8 Gagnabit, 1 Stoppur Bit, Parity Bit, Baud Rate: 19200 |
gagnsætt gagnaviðmót, | einhliða gagnsæ raðtengissending, 8 Gagnabit, 1 Stop Bit, styðja Odd Parity, Parity Bit, Þráðlaust paritet, Baud Rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
dulkóðunaraðferðir | styðja 128 bita dulkóðun |
mótun kortlagning | QPSK (4QAM), 16QAM, 64QAM |
áfram villuleiðréttingu | 1/2 2/3 3/4 5/6 7/ 8 |
vörður bil | 1/32 1/16 1/8 1/4 |
Flutningsnúmer | 2K |
tíðni bandbreidd | 2 / 3 / 4 / 5 / 6 / 7 / 8M Stillanlegt |
flutningskóða straumur | 2000kbs ~ 20000kbs Stillanlegt |
senda orku | 0.5 / 1 / 2 / 5 / 10 Watts |
flutningstíðni | Any Frequency Customizable, Skref 1MHz |
kraftfleti | innan við 10MHz bandlaust en 0,2dB |
hlutfall öxl | úttaksaflið 27dB, axlarhlutfall er betra en -30dB |
annað harmonicið | ≤-45dB |
MEIRA | 32Db |
inntak myndband | 720×480 60ég(NTSC), 720×576 50ég(VINUR), 720 50P, 720 60P, 1080 50ég, 1080 60ég, 1080 24P, 1080 25P, 1080 30P, 1080 50P, ýmsar stillingar eru aðlagandi. |
HD tengi | HDMI, SDI valfrjálst |
vídeó kóðun snið | H.264 |
verndarstaðall | undirvagn af gerðinni ofn af öllu áli, andstæðingur-tæringu, höggþétt hönnun |
heildarstærð | 9 x 6.4 x 2.3 cm |
Heildarþyngd | ≤0.20KG |
Upplýsingar um móttakara
Vélbúnaður með fjölbandsbreidd HD móttakara | |
Móttaka tíðnisvið | 170-860MHz VHF&UHF |
tíðni bandbreidd | 2/3/4/5/6/7/8MHz, valfrjáls |
RF inntak stig | -94dBm ~ -15dBm (8M bandbreidd)/-98dBm ~ -15dBm (2M bandbreidd) |
RF inntak viðnám | 50 ohm |
RF inntakstengi | N-höfuð |
demodulation mode | COFDM |
stjörnumerkisstilling | QPSK, 16QAM, 64QAM (valfrjáls) |
áfram villuleiðréttingu | 1/2, 2/3, 3/4, 5 /6,7/8 (valfrjáls) |
flutningsnúmer | 2K, |
vörður bil | 1/32, 1/16, 1/8, 1/4 (valfrjáls) |
vídeó afkóðun | MPEG-2MP@ML/H.264 |
stærðarhlutföll | 4: 3 16: 9 |
myndbandsmynd er | 720 * 576 @ 8MHz 1080P @ 60P |
hljóð framleiðsla háttur | hljómtæki í ójafnvægi 300 / 200mv |
hljóðútgangur | framleiðsla2Audio + 2Video framleiðsla |
rekstrarspennu | AC220V / DC12V <0.5A |
Vinnuhitastig | – 20℃ ~ + 50 ℃ |
Útlitstærð | 480*260*45 (1U) undirvagn |
þyngd búnaðar | 1.5kg (tvíhliða tungumál 2.5Kg) |
Note: sjálfgefna tengið er HDMI, ef þú þarft á ódýrari gerðinni að halda, tengi fyrir CVBS gult myndbandstengi 720p HDMI, vinsamlegast Athugaðu hér for another model.
Lýsing:
– Þetta tæki samþykkir COFDM tækni, sem samþættir flutningsloftnet, stafræn mótun, hljóð, and video function.
– Samningur stærð, lítill hiti, og langt flutningsvið
– samhæft við litla myndavél, gæti gert HD myndatöku og sendingu mögulega
– sendingarsviðið verður lengra ef það notar loftnet með háum styrk
– Sendingarsvið: 5000m (án nokkurrar truflunar)/500M með hindrunum trufla
Features:
– Samningur stærð, mótunarhönnun
– Samþykkir COFDM mótunartækni, MPEG-2 mynd com þjöppunartækni
– Alhliða samskipti
– háhraðasamskipti gera rauntíma hljóð- og myndsendingu kleift
– Álhulstur sem er höggheldur
– NLOS sending
upplýsingar:
sendandi:
– stærð:90x64x23mm
– þyngd:200g
– loftnet:22mm
Viðtakandi
– stærð: 87x70x20mm
– þyngd:200g
– Loftnetshæð:42.5cm (gæti verið beygt)
Tæknilegar upplýsingar
– mótum: COFDM
– vinnuspenna: DC11V-DC13V
– vinna núverandi:0.5W: minna en 0,6A @ DC12V
– stjórnhöfn: standrad RS232 höfn. 8-bita gagnabitar, 1-hluti stopp hluti, baud hlutfall:19200, styðja stakan parity check
– gagnaflutningur flutnings:8 bita gagnabitar,1 hluti stopp hluti, baud hlutfall,1200,2400,4800,9600,19200,38400,57600,115200,230400
– dulkóðun: stuðningur 128 dulkóðun
– mótum kortlagning: QPSK (4QAM),16QAM,64QQAM
– Áfram villuleiðréttingu: 1/2,2/3,3/4,5/6,7/8
– Verndaðu bilið: 1/32,1/16,1/8,1/4
– Flutningsnúmer:2K
– tíðni bandbreidd:2/3/4/5/6/7/8M stillanlegt
– flutningsstraumur:2000kbs-20000kbs stillanlegt
– flutningsafl: 2W
– flutningstíðni: væri hægt að aðlaga, skref er 1Mhz
– máttur flatneskja: minna en 0,2 db innan við 10Mhz
– Second harmonic: minna en -45db
– MEIRA:32dB
– inntak myndband:1VP-P,75óm
– Snið myndbandsforrits: MPEG-2
– Vídeó gæði: 720×576 þegar yfir 4M
– Format: Hægt væri að stilla NTSC og PAL
Tækniforskrift móttakara:
– Tíðnisvið móttakara: 170-860Mhz, VHF og UHF
– tíðni bandbreidd: 2/3/4/5/6/7/8 Mhz, stillanleg
– RF inntak stig:-94dBm-0dbm við 8M / -98dbm-0dbm við 2M
– RF inntak viðnám: 50óm
– RF inntakstengi: High School
– mótum: COFDM
– Stjörnumerkjaleiðin: QPSK,16QAM,64QAM valfrjálst
– Áfram villuleiðréttingu: 1/2,2/3,3/4,5/6,7/8 valfrjáls
– Flutningsnúmer:2K
– Verndarbil:1/32,1/16,1/8,1/4
– Skjáhlutfall:4:3,16:9
– myndbandsmynd:720×576 @ 6Mhz
– Hljóð- og myndúttakstengi: Standard 3.5 höfn
– vinna spennu: DC12V 0,3A
Pakki innifalinn:
– 1 x sendandi
– 1 x móttakara
– 1 setja x fylgihluti
30Km long distance COFDM HDMI Wireless Video Transmitter
FAQ
spurning 1: Ég þarf að minnsta kosti 30 km fjarlægð frá lofti til jarðar fyrir UAV UGV USV.
svar 1:Kerfið okkar styður það, það ætti að nota 2W magnara, það er betra að nota sérstaka langa sendiloftnetið og tvö hærri móttakaraloftnet.
COFDM-912T VS COFDM-908T
spurning 2: Hversu langt kemst ég ef ég nota bæði sendi og móttakara á jörðu niðri?
svar: Við notkun á jörðu niðri, sendir og móttakari verða að hafa ákveðinn hæðarmun til að senda langar vegalengdir.
Lengsta vegalengdin er aðeins 2.5 kílómetra ef sendir og móttakari eru báðir í sömu hæð á jörðu niðri. Vinsamlegast sjáðu prófunarmyndbandið okkar; vegna þess að sendir og móttakari eru staðsettir á mismunandi stigum, önnur hliðin er við fjallið, önnur hliðin er við ströndina, við notuðum sjálfgefna tvö wött til að senda 27 kílómetra.
spurning 3: Styður það vinnuumhverfi af -20 gráður?
svar: Já, stutt
spurning 4: I want to buy modules and built-in my devices, please tell me the dimension of that modules.
svar: SD model: 6X7X1.6cm, HD model: 5X7X1.6cm
spurning 5:Do you have any special case shells for marine use?
svar: Já, Vinsamlegast athugaðu hér að neðan mynd. (For the transmitter with a three-proof shell, vatnsheldur, höggheldur, anti-salt spray, 防水,防震,防盐雾)
Precautions for order customization
- tíðni: Please tell me what frequency you need as the default center frequency. Please choose from 170-860Mhz.
- Antenna lengd: Please tell us the length you want for the 1-piece transmitter and 2-piece receiver antenna. (receiver antenna length has 0.8 eða 1.8 meters optional)
- Loftnetsgerð:
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/.
Algengar spurningar
Q. What is the video resolution?
A: HDMI 1080P.
Q. Does the transmitter power current is high?
A: Fyrir sendandi, the different PA (pa-afl-magnari-cofdm-dvb-t-tx-sendir-1w-2w-5w-10w-20w-30w) inni, the current is different. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A
Fyrir Viðtakandi, 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 kílómetra. 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.
Til dæmis, 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 metrar.
- 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 |
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. Til dæmis, 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 klukkustundir.
-
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.
- Já, the wireless video signal reception is improved by using Yagi and omni-directional antennas.
- Já, we can build the transmission of telemetry and video in COFDM-908T.
- Fyrst, 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 vött. 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.
Já, 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, 1080Tilgreindu, 1080Tilgreindu
nú, it does not support 1080i, nor does it support 4K transmission.
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Umsagnir
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