Atagba fidio Alailowaya COFDM ati olugba
Atọka akoonu
Atagba fidio Alailowaya COFDM ati Iwọn olugba
2-watt PA COFDM Alailowaya Video Atagba
iwọn: 90x65x22mm
Awọn ilọsiwaju aipẹ julọ ni COFDM (Aami Orthogonal Igbohunsafẹfẹ Pipin Multiplexing) Atagba fidio alailowaya ati imọ-ẹrọ olugba ti yi pada bi fidio ti ṣe tan kaakiri ati gbigba. COFDM jẹ ilana imupadabọ ti o gba data oni-nọmba laaye lati tan kaakiri lori ọpọlọpọ awọn igbohunsafẹfẹ, Abajade ni ifihan agbara igbẹkẹle diẹ sii ati ilọsiwaju gbigbe data.
A lo imọ-ẹrọ COFDM ni awọn ohun elo lọpọlọpọ, gẹgẹ bi awọn oni tẹlifisiọnu, alailowaya fidio gbigbe, ati oni redio. O tun rii ni awọn ohun elo ologun ati awọn ohun elo afẹfẹ bii awọn ibaraẹnisọrọ satẹlaiti ati awọn ọkọ ofurufu ti ko ni eniyan.
Níkẹyìn, awọn ilọsiwaju aipẹ ni atagba fidio alailowaya COFDM ati imọ-ẹrọ olugba ti yipada ni ọna ti a gbejade ati gbigba fidio. This technology has enabled high-definition video transmission over wireless networks, as well as video transmission over a variety of networks and devices. The use of advanced coding techniques, such as forward error correction (FEC) and adaptive modulation, has enabled this.
5-watt PA COFDM Alailowaya Video Atagba
5-Watt PA COFDM-912T Weight
Package fun eto kikun ti COFDM Alailowaya Fidio Atagba
FAQ ti COFDM Alailowaya Fidio Atagba ati olugba
hi, Mo n wa atagba fidio hd gigun gigun pẹlu igbewọle hdmi ati olugba kan pẹlu iṣelọpọ hdmi.
Kan tan kaakiri ati gba ni ile-iṣẹ iwo-kakiri kan. Ero naa ni lati lo iṣelọpọ HDMI ti isakoṣo latọna jijin ki o tun gbe lọ si aarin. drone ni eto lati tan kaakiri lori intanẹẹti, sugbon ko si ayelujara ni asale, nitorinaa a nilo lati tun firanṣẹ ṣugbọn kii ṣe pẹlu intanẹẹti.
O dara, our one-way long-range wireless video transmission solution is the base of COFDM technology (similar to DVB-T digital TV broadcasting). It is not on the base of the Internet.
Ṣe atagba fidio alailowaya COFDM yii ati olugba ni AES 256 tabi 128 fifi ẹnọ kọ nkan? awọn wu kika ti wa ni kikun HD?
bẹẹni, COFDM-912T supports AES 128 fifi ẹnọ kọ nkan. Please notify us to plus a Parameter Configuration board for setting the AES128 password when you are placing the order. It is optional to buy.
The COFDM-912T transmitter only supports SD720P Video input. So even if the receiver has HDMI output, it cannot output real 1080P high-definition video, only 720P.
If you have very high requirements on the definition of picture output, I suggest you choose a model that both the transmitter and receiver support 1080P, COFDM-908T
Ṣe o le de ọdọ 30 km ni ayika?
In the introduction of the wireless video transmission system, all the transmission distances mentioned are based on the visible range (THE). The 2WPA power amplifier supports 30 kilometers and is usually used on drones. The altitude is very high and the receiver is on the ground, so there is an obvious height difference between the transmitter and the receiver, and the wireless signal is transmitted in accordance with the waveform. The signal loss is small and other interference is very little clutter.
You mentioned that your usage scenario is that both the transmitter and receiver are on the ground, especially in desert areas, and there may be rolling sand dunes. nitorina, the signal transmitted wirelessly is easily interfered with. So here are the suggestions:
1. Try to use a high-power transmitter, bi eleyi 10 Wattis tabi 20 Wattis. Many of our ship customers use 20W transmitters.
2. Try to use a higher antenna or put the antenna on the roof or a nearby hill, and you can also increase the antenna tripod. Our clients always choose some 1.8-meter FRP omnidirectional fiberglass antennas.
3. If conditions permit, a repeater tun le ṣe afikun lati mu agbara ifihan pọ si ati mu ijinna gbigbe pọ si. Atunṣe le ṣe atunṣe ni ibi giga tabi lori orule ọkọ ayọkẹlẹ gbigbe kan.
Bii o ṣe le ṣajọ atagba fidio alailowaya, kamẹra, ati batiri?
Jọwọ ṣayẹwo aworan isalẹ. 
Awọn asopọ agbara meji wa ni atagba, awọn pupa asopo ni 12V o wu fun kamẹra, ati dudu asopo ni 12V input.
What is the lag or delay in milliseconds of your COFDM-912T?
200-300ms pẹlu kamẹra deede ati atẹle.
Kamẹra deede ati iboju ni idaduro ti 200 milliseconds, ọtun?
Pẹlu wa 100 milliseconds, nipa 300 to 400.
A tun ni ọkan pẹlu 30 milliseconds, ṣugbọn iye owo jẹ 6 igba yen
300 milliseconds jẹ itẹwọgba ti ọkọ ofurufu rẹ ba ni iṣẹ yago fun idiwọ adaṣe adaṣe.
I noted your transmitter can support up to 30 kilometers in LOS. How far will it support in the NLOS environment?
O soro lati sọ awọn ibiti o ti kii-ila-ti-oju lilo, o da lori iye awọn idiwọ ti o wa ni aarin. O nira lati tan kaakiri ti irin ti o wa ni kikun tabi awọn oke-nla ṣe idiwọ rẹ.
The test environment is unique, and the distance obtained from the test is also different. We can’t make any guarantees or promises about this.
We are a company that offers a solution to some rural areas here in the Philippines to monitor their rivers. If we purchased a 2W(30km) in the NLOS location, it could be reduced to 20km or more?
It is hard to say, it should depend on the obstacles between the transmitter and receiver. We don’t test it in your use environment, So I can’t tell you.
The same product will be interfered with differently in different environments, and the transmission distance is hard to say. Only the actual test will know.
Buyer: Actually, we have installed a radio transceiver that gathers a data sensor and transmits its data to an 18km distance center command. The operation is smooth and ok.
The same place we’re going to put up the device that we will buy from you.
As you have said, only an actual test will answer all of my questions.
Can the COFDM-912T TX device output separate serial data?
Awọn data le ṣee gbejade nikan ni itọsọna kan lati atagba si olugba.
Ti o ba nilo lati atagba data ni awọn itọnisọna mejeeji, o nilo lati fi kan telemetry redio oni-nọmba. (transceiver data alailowaya).
I would like to know if the transmitter can also output serial data on what the camera is capturing. Other than RF does it have a separate rs232 output for the transmitter?
bẹẹni, COFDM-912T ṣe atilẹyin gbigbe data ni tẹlentẹle fun ọ. Jọwọ ṣayẹwo aworan isalẹ. 
In this module where I can put up the camera? What type of camera is suited for this device?
Awọn dudu ọkan lori osi fihan kekere kan bit ti awọn loke aworan, eyi ti o ti sopọ si kamẹra.
O ṣe atilẹyin kamẹra AV akojọpọ 720p CVBS kan. tabi eyikeyi kamẹra HDMI nipasẹ HDMI si apoti oluyipada AV.
How can I let the transmission still work well if I remove the menu and panel board from the receiver?
Ṣe eyikeyi ọna lati mu awọn iṣakoso nronu ki awọn olugba le ri awọn fidio lati awọn Atagba?
Ti o ba ti mo ti yọ awọn iṣakoso nronu lori awọn olugba, olugba ko ri ifihan agbara lati atagba.
idahun: Jọwọ ṣayẹwo FAQ ni ọna asopọ isalẹ.
https://ivcan.com/p/cofdm-video-transmitter-receiver-av-in-hdmi-out/#accordion-item-6._i_have_changed_the_parameter_on_the_configure_board_tool,_why_it_is_not_saving_when_i_restart?
Mo gboju pe o ko fi igbohunsafẹfẹ pamọ, lẹhin ti o ti yọ awọn akojọ lori awọn olugba, eto naa yoo pada si igbohunsafẹfẹ aiyipada ti 340Mhz. Nitorina o ko le gba ifihan agbara naa.
If GPS and TX are separated less than 1 mita – GPS is jammed. COFDM-912T has significant noise in GPS l1 and l2 freq. Do you have any low-pass filters to solve this problem?
hi! A ṣe idanwo nla ṣaaju ki o to paṣẹ ipele nla kan. Ati pe o dojukọ awọn ọran ti apapọ atagba COFDM-912T pẹlu GPS.
idahun:
1. Ti o ba tun ra, Mo le ṣafikun àlẹmọ kọja kekere ninu atagba inu ọfẹ. Mo tun le pese àlẹmọ kekere ti ita fun ọ ni ọfẹ.
2. “Ṣe o mọ kini pipadanu ifibọ ni igbohunsafẹfẹ ti kii ṣe àlẹmọ?”, idahun: ti o pọju 0.6db
3. “Ṣe o mọ kini pipadanu dBm jẹ igbohunsafẹfẹ kọja?” 0.4dBm
COFDM-912T Customize Development
2 Watts default 595Mhz with 1.8-meter transmitter and receiver antenna
Onibara sọ fun wa pe awọn alaye ohun elo rẹ, atagba ati olugba, ti wa ni mejeeji lo lori ilẹ. Lati jẹki ijinna gbigbe alailowaya ati yago fun kikọlu ifihan agbara miiran, Mo ṣeduro pe mejeeji atagba ati awọn eriali olugba lo awọn eriali gilaasi 1.8-mita.
O jẹ igba akọkọ ti alabara mu ayẹwo fun idanwo, ki o lo awọn aiyipada meji-watt ampilifaya ati 595 MHz igbohunsafẹfẹ.
Onibara nilo pe atagba naa ni iṣelọpọ HDMI ki o le tan fidio ti o gba si awọn ẹrọ miiran. Ni akoko kan naa, lati le ṣe atilẹyin titẹ sii HDMI, Mo tun baamu HDMI si apoti oluyipada CVBS RCA AV.
Onibara ti ṣafikun ohun elo atunṣe paramita yiyan, Iṣẹ akọkọ ti eyiti o jẹ lati yipada igbohunsafẹfẹ gbigbe ati ikọlu. O tun le ṣafikun ọrọ igbaniwọle kan si fidio ti a tan kaakiri lailowa lati fi fidio atagba pamọ. A gbọdọ tẹ ọrọ igbaniwọle kan sii sori olugba lati pinnu fidio naa lati mu aabo fidio naa dara.
Change COFDM Transmitter to 200 mW PA, with a power switch of the cooling fan for body wear
Customize a video on-off switch on the COFDM Transmitter for audio-only wireless transfer.
Eyi ni fidio idanwo fun ibeere alabara yii, ṣafikun fidio titan-pipade ni atagba fidio alailowaya 10-watt PA lati gbe ohun nikan lọ.
Eyi ni fidio kan lati fihan ọ pe a le ṣafikun fidio kan ni pipa yipada lori atagba ohun afetigbọ fidio alailowaya COFDM.
Fidio lori, lẹhinna atagba yoo gbe fidio ati ohun silẹ ni akoko kanna.
Fidio kuro, lẹhinna atagba yoo gbe ohun nikan lọ.
Ti o ba ni iṣẹ akanṣe tabi nilo lati ṣe akanṣe iṣẹ ti atagba fidio alailowaya ati olugba, jọwọ kan si wa.
Ampilifaya agbara aiyipada jẹ 2-watt, a tun ṣe 10-watt PA inu, lati ṣe atilẹyin ibiti o gun ati gbe awọn ijinna ti o gbooro sii.
2 Watts default 595Mhz with Yagi Directional Antenna and Omnidirectional antenna
300 Watts power amplifier modified 230Mhz COFDM wireless video transmitter and receiver
FAQs
- bẹẹni, Iwọn igbohunsafẹfẹ le yipada lati 170Mhz (dara lati 220Mhz) si 860Mhz. Nitorinaa o le ṣiṣẹ daradara ni ẹgbẹ 260Mhz.
- Igbohunsafẹfẹ yẹ ki o yipada si kanna lori atagba ati olugba. Ti idi, Ampilifaya Agbara ati igbohunsafẹfẹ eriali yẹ ki o yipada igbohunsafẹfẹ kanna. (O nilo lati ra ampilifaya agbara ati eriali fun atagba ati olugba lati pade ipo igbohunsafẹfẹ rẹ ti o yipada).
- Lati le ni ilọsiwaju ifamọ ti gbigbe ati gbigba, bandiwidi igbohunsafẹfẹ ni gbogbo ṣe pupọ dín (igbohunsafẹfẹ aarin ±15MHz, nitorina bandiwidi yẹ ki o jẹ 30Mhz). Ampilifaya agbara ti atagba ati igbohunsafẹfẹ ti eriali jẹ adani ni pataki ni ibamu si igbohunsafẹfẹ ti o nilo.
- O dara julọ nigbati o ba paṣẹ, jọwọ sọ fun mi iru igbohunsafẹfẹ iṣẹ ti o nilo. Awọn onimọ-ẹrọ wa yoo yipada igbohunsafẹfẹ ti atagba ati olugba, ati tun yipada PA ati eriali aṣa ni ibamu si iwọn igbohunsafẹfẹ yii lati rii daju ifamọ ti o dara julọ ati atilẹyin ijinna gbigbe to gun julọ.
- Igbohunsafẹfẹ aiyipada jẹ 590Mhz, Pẹlu 30Mhz (+/-15MHz), o le yipada laisi iyipada Agbara Ampilifaya ati eriali. Fun apere, 578MHz, 584MHz, 590MHz, 596MHz, ati 602Mhz.
- Ti o ba nilo lati yipada igbohunsafẹfẹ atagba ati bandiwidi, o nilo ọpa pataki ti igbimọ atunto paramita, jọwọ wo aworan isalẹ, kii ṣe ẹya ẹrọ aiyipada, jọwọ ra ni afikun idiyele tabi kan si wa ṣaaju ki o to paṣẹ.
bẹẹni, o ṣe atilẹyin lati firanṣẹ fidio ati data UART lati atagba ati olugba.
Bi o ṣe jẹ gbigbe ni ọna kan, nitorina ko le firanṣẹ aṣẹ iṣakoso lati ọdọ olugba si atagba.
Ti o ba nilo lati firanṣẹ awọn aṣẹ iṣakoso tabi data miiran lati ọdọ olugba lati ṣakoso awọn ẹrọ miiran gẹgẹbi awọn kamẹra tabi awọn drones ni atagba., o le fi kan ti ṣeto poku oni gbigbe ẹrọ, pe wa, ati pe a le ṣe akanṣe fun ọ.
Jọwọ ṣayẹwo asọye UART lori atagba ati olugba ni ọna asopọ isalẹ. Jọwọ sọ fun mi ti o ba fẹ ni okun asiwaju. (aiyipada ko si)
Ampilifaya aiyipada Atagba jẹ 2 Wattis, nitorina o le ṣe atilẹyin 30 KM ni ila-ti-oju.
Aworan ti o wa ni isalẹ jẹ aaye idanwo wa lati oke si eti okun.
Ti o ba fẹ tan kaakiri ibiti o gun, o le mu ampilifaya agbara pọ si. Ni afikun si ọkan watt ati meji wattis, a tun le ṣe 5 watts, 10 watts, ati 20 Wattis fun yiyan rẹ. Awọn ampilifaya nla tun nilo awọn batiri nla ati atilẹyin lọwọlọwọ.
Fun 20W PA, Ipese agbara yẹ ki o jẹ 24 ~ 28V. Nikan ni 28 volts le ampilifaya agbara se aseyori awọn ti o dara ju workability.
Onimọ ẹrọ wa le yi igbohunsafẹfẹ pada si 300Mhz lati aiyipada 590Mhz, Eriali, ati PA ni ile-ipamọ jẹ 590Mhz, 300Mhz nilo ọsẹ meji lati ṣe akanṣe, nitorina akoko ifijiṣẹ nilo to gun ju 590Mhz aiyipada wa.
Igbesẹ 1: Jọwọ tẹ O dara ati bọtini ọtun ni akoko kanna, akojọ aṣayan boya lati fipamọ yoo han loju iboju.
Igbesẹ 2: Jọwọ tẹ O dara lati yan Bẹẹni lati fipamọ.
Leti, jọwọ lo eriali ti o tobi tabi to gun ti iṣẹ akanṣe rẹ ba gba laaye, o le gba iṣẹ gbigba to dara julọ ni ibiti o tobi julọ.
Eto kikun aiyipada
- SD Atagba ( PA 0.5W, 1W, 2W, 5W, 10W, 20W, 50W iyan gẹgẹ bi ibere re eletan)
- SD Atagba eriali
- HDMI CVBS o wu olugba pẹlu paramita Iṣakoso akojọ ati kekere iboju
- 0.8-eriali olugba mita 1 PC. (Nibẹ ni o wa meji orisi ti fifi tabi ojoro eriali: 1. oofa sucker mimọ eriali, 2. aiyipada U-Iru dimole FRP fiberglass eriali )
- iyan, igbimọ iṣeto paramita fun atagba fidio alailowaya.
(Ti o ba nilo eriali mimọ sucker oofa, kiakia tabi ti ngbe ro pe awọn ọja oofa yoo dabaru pẹlu aabo ọkọ ofurufu wọn, nitorina iye owo gbigbe ga ju eriali dimole U-type. )
Awọn aiyipada ni kikun ṣeto iwọn package
- 84*21*12CM
- Apapọ iwuwo 4.5KG
- Ti o ba yan eriali ti o ju 100cm ati eriali ipilẹ sucker oofa, Diẹ ninu awọn olutaja ẹru yoo gba owo ni afikun, gẹgẹ bi awọn afikun awọn idiyele gigun ati awọn idiyele afikun fun awọn ohun oofa to lagbara.
- Awọn atagba paramita configures ọkọ ti o yatọ si lati ọkan lori awọn olugba. Famuwia lori igbimọ atunto paramita yatọ si atagba ati olugba, wọn ko le ṣee lo interchangeably.
- Awọn atagba paramita configures ọkọ le ṣatunṣe attenuation ifihan agbara lori Atagba. Fun 0.3db yoo dinku 0.5W PA.
ibeere: Ṣe o ṣee ṣe lati yi agbara itujade pada (ti abẹnu PA 0,5 w, 1 w, 2 w) nipasẹ awọn iṣeto ni ọkọ?
- Bi idahun loke, o le ṣatunṣe awọn o wu agbara nipa eto awọn sile ti ATTEN nipasẹ awọn paramita iṣeto ni ọkọ ọpa lori awọn Atagba. (Ọpa yii ko pẹlu package aiyipada, o nilo lati fi to ọ leti wipe o fẹ lati ni yi ọpa nigba ti o ba bere fun)
- Ti o ba ra 2W PA, lẹhinna o le ṣeto 0.5W, 1W, sugbon ko le yi o si 5W.
- A tun le ṣe si 5W, 10W, 20W, ati 50W ti o ba nilo lati ṣe atilẹyin gigun-gun.
ko si.
Atagba fidio alailowaya yii ṣe atilẹyin kamẹra CVBS tabi titẹ sii fidio nikan, iru kamẹra fidio miiran nilo apoti oluyipada afikun.
ko si. O jẹ COFDM (DVB-T) ọna ẹrọ.
Nitorinaa iwọn igbohunsafẹfẹ COFDM jẹ 170-860Mhz. O le ṣe atilẹyin 477, 610, 675, 724, 816MHz, ṣugbọn ko le ṣe atilẹyin 970, 1180, 1230 MHz.
Atagba awoṣe pataki wa le ṣe atilẹyin gbogbo awọn sakani ti o wa loke, ṣugbọn awọn olugba nilo lati lo awọn downconverter Àkọsílẹ.
Lati le gba eto gbigbe alailowaya wa lati ṣe atilẹyin ibiti o gbooro ati agbara ifihan to dara julọ, ni gbogbogbo a ṣeto igbohunsafẹfẹ iṣẹ si aaye kan (170~ 860Mhz), ati ibiti atilẹyin rẹ jẹ afikun tabi iyokuro 15Mhz. Fun apere, igbohunsafẹfẹ aarin jẹ 590Mhz, Iwọn igbohunsafẹfẹ atilẹyin ti o pọju yẹ ki o jẹ 575Mhz ~ 605Mhz, PA ati eriali jẹ adani ni pataki ni ibamu si igbohunsafẹfẹ aarin yii.
How to add a low-pass filter chip to the transmitter?
Diẹ ninu awọn onibara jabo pe nigba ti aaye laarin atagba wa ati eriali GPS kere ju mita kan lọ, Atagba yoo dabaru pẹlu iṣẹ GPS nipasẹ eriali gbigbe.
Awọn ifihan agbara satẹlaiti GPS ti pin si L1 ati L2, pẹlu awọn loorekoore ti 1575.42MHZ ati 1228MHZ lẹsẹsẹ. Igbohunsafẹfẹ atagba wa jẹ 595Mhz nipasẹ aiyipada. Ti a ba pade ipo yii, a le ro fifi àlẹmọ-kekere kọja, eyi ti o tumo si awọn loorekoore ni isalẹ 600Mhz. Awọn igbohunsafẹfẹ loke 600 MHz le jẹ timole lati yago fun kikọlu pẹlu awọn ọja itanna miiran ti njade.
Awọn ọna meji lo wa lati ṣafikun àlẹmọ kan. Ọkan ni lati ṣafikun àlẹmọ IC si igbimọ atagba COFDM-912T, ati awọn miiran ni lati fi kan àlẹmọ apoti ita awọn Atagba. Àlẹmọ-isalẹ le dinku awọn loorekoore ni isalẹ aaye ipo igbohunsafẹfẹ kan, ati àlẹmọ igbi-kọja le dinku awọn igbohunsafẹfẹ ni isalẹ aaye ipo igbohunsafẹfẹ kan nipa gbigba wọn laaye lati kọja.
