Sabbin Bayanai na Bidiyo mara waya ta Sauti mai watsawa da Gwajin Mai karɓa a cikin 2022
Bayanin Bidiyo mara waya mara waya ta watsa sauti da mai karɓa TX900 2 Watts 27km gwajin bidiyo daga saman dutse zuwa bakin teku. (Bidiyo a ciki)
Wireless Video Data Audio Transmitter and Receiver, Hanya biyu, Download-Upload
A customer saw our real test video about the 2 Watts Power Amplifier 27km mai watsa bidiyo mara igiyar waya mai tsayi da mai karɓa. He placed an order for this equipment. He hoped we would also bring the transmitter to the top of the mountain and the receiver to the seaside for testing before shipment. We have done our best to meet the needs of the customers. So we did it and created today’s video. If you want to learn about the actual transmission effect of long-range HD 1080P wireless video transmission, as well as how to operate it. Please keep watching.
Let’s begin by looking at the test location and distance on Google Earth. Search Meishajian, which is located on Shenzhen’s third highest peak, for no obstructions and simulate the situation of an aircraft with a transmitter in the air, ensuring that the test is within the line of sight. There are many high-rise buildings in a coastal city like Shenzhen. Finding a test environment with a line of sight and a distance of 30 kilometers is difficult. A T-shape is formed from here to the seaside of Nan’ao. Our receiving station is on the beach, and we can see the top of the transmitter from a distance of 27 kilomita.
We used the good distance tool to determine that the distance between the transmitter and the receiver is nearly 27km. In the following video, we can see from the receiver’s web UI page that the current transmitter to receiver distance is 27390 mita.
Now let’s take a look at the situation of the transmitter on the mountain. The transmitter, IP network camera, and battery are placed on the rock. The trekking pole and red bubble belt make a red flag, which is fluttering in the wind so that the picture on the receiver screen is not static, it can be observed whether the wireless transmission video is smooth. The receiver is on the other side of the sea. The black transmitter is connected to two 30cm height transmitting antennas, the left part is the IP network camera, which is connected to the transmitter with a network cable, and the right part is a 12V battery, which powers the transmitter and the IP network camera.
Please try to position the transmitter and receiver vertically while transmitting. The signal strength will then be strong. Allow me to turn the transmitter and receiver in my hand, and the receiver monitor video will begin to move. The receiver will determine whether or not the video is smooth.
Now let’s take a look at the picture of the receiver.
The receiver is connected to the computer through the network cable. We can use the RTSP player on the computer and see the smooth picture directly.
We can also enter 192.168.8.11 in the browser to open the setting page of the receiver. On this parameter setting page, we can see various parameters of the current transmitter and receiver. An important parameter in this table is the distance and the signal strength. Now we can see that from the current transmitter to the receiver distance is 27390 mita.
In the computer’s RTSP player, we can see that the wireless video transmission picture from the mountain transmitter has been kept very smooth, and the little red flag and the grass are fluttering in the wind without any lag, frozen, mosaic.
We are using an IP network camera to test, if your camera has HDMI 1080P, 4K HD, SDI, AHD, or CVBS output, we also can add an encoder to the transmitter, connect your video output, and send out the IP living streaming to the transmitter. A mai karba, output the video to a computer through a network cable, or to a network video recorder.
It can be seen that the picture is very smooth,
Here we continue to play the videos recorded by the transmitter and receiver on the computer, and we can also answer some questions that some clients care about and always asked.
Two-Way full duplex Wireless Video Data Audio Transmission
Na farko, this set of wireless video data transmission transmitters and receivers is a two-way full duplex transmission system, it is like setting up an invisible wireless network in the air, two computers can be connected, and ping can be used in the computer’s cmd command state. In addition to transmitting video, data and audio can also be transmitted.
Power Amplifier options 2W, 5W, and 10W to support longer distance
Second, if you want to support longer distances, we can achieve longer distances by changing different amplifiers. Misali, 300MW, 2 Watts, 5 Watts, 10 Watts power amplifier, the corresponding transmission distance is 7 km, 15 km, 30 km, 80 km, 100 km, the farthest can be transmitted to 150 km, we also have a 110 km The actual test video. If you are interested, I can also edit it and upload it for everyone to watch.
Up to 150Km, 4 times of English Channel Width
Na uku, what is the concept of supporting up to 150 kilomita? It is equivalent to 93 miles. The UK is separated from Europe by the English Channel, and its width is only 35 kilomita, wato, 150 kilometers is equivalent to the width of 4 times English Channels. It can also transmit high-definition videos with good signals.
Video Download, UART Data TX RX,
Fourth, if you need to control the PTZ camera, the receiver can also send control commands to adjust the direction and movement of the camera. This set of Wireless video data transmission transmitters and receivers also has three RS232 data interfaces, which can transmit various commands and data, and even connect with the drone’s flight control to remotely operate the drone.
AES 128 to protect video data safety
Fifth, this wireless video transmission device also supports aes128 for video encryption and decryption, so you don’t have to worry about your video, not safety, or being intercepted by others.
Two-Way Video Data Link Module + ikon amfilifa
Sixth, Today we used 2 watts power amplifier. If your project demand, you can also purchase the two-way Wireless video data audio transmission transmitter and receiver module, and then configure your power amplifier.
1. What battery should I prepare for this 2 Watts, 5 Watts 10 Watts Power Amplifier transceiver?
2 Watts needs a 12V Power Supply, 5 Watts needs a 24V power supply, 10 Watts needs a 28V power supply
2. Game da mai watsa bidiyo, menene mitoci samuwa?
There are three frequencies to choose from 800Mhz, 1.2G, kuma 2.4g.
Amma babu 10W Power Amplifier don 150km a 2.4Ghz. So if the buyer wants to support a 150km transmission distance, 800Mhz da 1.2G kawai za a iya zaɓar.
3. Za ku iya ɗaukar bidiyo na gwaji don in gani kafin jigilar kaya?
I mana, mun kuma fahimci cewa watsa shirye-shiryen bidiyo da na'ura mai ba da hanya tsakanin hanyoyin sadarwa suna da tsada sosai. Kuna da nisa daga masana'antar China. kuma fatan cewa kayan da kuke karɓa sun dace da mafi kyawun aiki.
Idan kun ba da kulawa ta musamman ga takamaiman siga ko aiki, za mu iya ɗaukar wasu bidiyon gwaji bisa abubuwan da kuke son gani, don Allah a ji daɗin tuntuɓar mu. It won’t be shipped to you directly without your approval. Just like today, I tested and show the video to my client.
4. Zan iya amfani da kebul na RF mai mita 3 daga mai watsawa zuwa eriya?
Game da kebul na RF, our engineer doesn’t recommend that you used so long. Za a sami raguwar 0.5dB na kebul na RF na mita ɗaya. Domin 3 kebul na mita RF, za a rage ƙarfin siginar ta 1.5dB.
5. It seems that your transmitter is supporting an IP camera, but my video source camera is HDMI or SDI video output, Ta yaya zan iya amfani da wannan watsawa da mai karɓa?
a, shigar da tsohowar bidiyo shine tukunyar ethernet IP RJ45, if your camera is HDMI or SDI or AHD, kawai da ƙaramin akwati guda ɗaya don magance wannan matsalar, this encoder box will output IP living stream to the transmitter.
6. Wadanne nau'ikan tashar shigar da bidiyo ke da mai watsa bidiyo mara igiyar waya?
Masu watsa bidiyo na mu mara igiyar waya suna da irin waɗannan hanyoyin shigar da bidiyo: HDMI 1080P da 4K HDMI, CVBS hadawa, SDI, AHD, IP Ethernet, and BNC, or tell us what type you need, and our engineer will modify it to meet your demand.
7. Menene nisan watsawa da ke da goyan bayan mai watsa bidiyo mara waya ta ku?
Ana iya daidaita nisan watsa mu ta hanyar ƙara amplifiers. A halin yanzu, the main ones are 15km, 30km, 50km, 80km, 100km, kuma 150km, wanda ya dogara da bukatun abokan ciniki.
I mana, the transmission distances listed above are all within LOS the line-of-sight range. Idan akwai cikas tsakanin na'urar sadarwa da mai karɓa, NLOS (wanda ba layi-na-ganin ba), an rage nisan watsawa sosai, kawai 1km ko 2km, ya danganta da adadin tsaka-tsakin cikas da muhallin mara waya na gida.
8. Menene hanya daya ko biyu? Simples vs rabin duplex, cikakken duplex
One-way means, Za mu iya aikawa kawai da zazzage bidiyo ko bayanai daga mai watsa bidiyo mara waya zuwa mai karɓa ta hanya ɗaya, kuma ba za mu iya loda bidiyo ko bayanai daga mai karɓa zuwa mai watsawa ba. Ana kuma kiran wannan nau'in simplex.
Two-way means that, ba wai kawai za mu iya saukar da bidiyo ko bayanai daga na'ura mai ba da waya ba zuwa mai karɓa, amma kuma muna iya loda bidiyo ko bayanai daga mai karɓa zuwa mai watsawa. Wannan ya dace sosai don sarrafa jirage marasa matuka. You can not only see the real-time video transmitted from the drone but also upload the command to control the drone or the command to control the PTZ camera to adjust the angle to the transmitter. Wannan na iya aiki lokaci guda. This type is also named half-duplex or full-duplex.
9. Shin mai watsa bidiyon ku na HDMI yana goyan bayan ɓoyayyen ɓoyewa da ɓarna mai karɓa?
Most Wireless video transmitters now support AES128 or AES256 bit encryption and decryption, dangane da abin da ka zaɓa. Da fatan za a tuntuɓe mu don tabbatarwa.
10. Za a iya gyaggyara mitar watsa bidiyo mara igiyar waya bayan masu amfani na yau da kullun sun karɓi kayan?
The frequencies of both the wireless video transmitter and the wireless video receiver can be modified. Masu amfani suna buƙatar siyan ƙarin allon saiti.
Duk da haka, la'akari da cewa an riga an daidaita amplifier na wutar lantarki da eriya a cikin takamaiman kewayon lokacin da aka aika kayan. Idan mai amfani ya daidaita mitar mai watsawa, the corresponding power amplifier, watsawa eriya, and receiver antenna should also be modified to the same frequency, kuma waɗannan masu amfani suna buƙatar shirya. Idan ba haka ba, zai sa mitar mai watsa bidiyo mara waya ta bambanta da mitar eriya, yin liyafar wahala. Don haka da fatan za a tabbatar da sanar da daidai mitar da kuke buƙata kafin yin oda.
Idan don tsaro ne ko sirri, you can use the encryption and decryption functions of the transmitter and receiver, wanda zai iya tabbatar da cewa watsa bidiyon ku na sirri ne.
11. Na ga cewa samfurin ku yayi kama da bukatuna, amma ina buƙatar gyara ɗaya daga cikin sigogi, shin hakan zai yiwu?
a, all our product parameters can be customized according to customers’ needs. Idan kuna da buƙatu ta musamman, don Allah a sanar da mu.
12. Me zan yi idan mai karɓar bidiyo na mara waya ya nuna sigina mara ƙarfi?
1. Change the place of the receiver to avoid potential local interference from magnetic solid environments.
2. Ensure that the antennas on both the transmitter and receiver are vertical.
3. Please raise the antennas of the transmitter and receiver to maintain a particular height difference.
4. Please look around to ensure that there are no obstacles between the transmitter and receiver.
5. Change the orientation of the receiver antenna.
6. If it doesn’t work, try moving the receiver to be near the transmitter’s position to see if it exceeds the effective wireless transmission distance.
7. Or consider adding a relay of the transmitting between the transmitter and receiver.
13. Zan iya siyan na'urorin watsawa da amplifiers kawai? Ina so in hada su cikin kayana.
Za mu iya, i mana, supply wireless video transmitter modules and power amplifiers.
Don gwajin samfurin farko, Ina ba da shawarar ku sayi samfuran samfuran gaba ɗaya saboda injiniyoyinmu sun inganta sigogi don cimma mafi kyawun aiki.
Bayan kun gama tantancewar gwajin ku, za ku iya cire harka ko zafin rana, install it on your device, kuma akai-akai daidaita sigogi don cimma mafi kyawun aiki. Zuwa gaba, za ku iya siyan kayayyaki ko na'urorin haɗi kawai waɗanda kuke buƙata.
14. To support longer distances, can I use a 10 Watts ko 20 Watts PA (ikon magana)?
a, idan kana bukata, we can change 10 Watts ko 20 Watts PA to support a more extended range.
If you still have any questions, don Allah a ji daɗin tuntuɓar mu!
15km 30km 80km 150km mai nisa mara igiyar waya mai watsa bidiyo mai karɓar watsawa PA 2W 5W 10W
15km 30km mai watsa shirye-shiryen watsa shirye-shiryen watsa shirye-shiryen watsa shirye-shiryen bidiyo mai nisa
15km 30km 80km 150km long-distance wireless video transmitter-receiver transmission transceiver
Teburin Abubuwan Ciki
Selling Points / Features / riba
Ƙarfin Sigina
Receiver screen can show the signal strength of the transmitter, masu amfani za su iya matsar da mafi kyawun wurin liyafar.
Video + data + Control
Except for video, it also supports two-way transfer of data and control commands via the UART between the transmitter and the receiver.
Lower rashin laka
From the receiver’s computer screen snap, we can see the current transmission latency /delay is 28-76ms (daƙiƙa). details
Tabbataccen Bandwidth
Ana iya gabatar da bandwidth na watsawa a 3M, 5M, 10M, kuma 20m. details 10-15-20Mbps
Two Antenna on the TX RX Transceiver
ANT1 don yanayin watsawa, ANT2 don yanayin karba
Cikakken saiti a cikin kunshin
Kunshin ya hada da watsawa, mai karɓar, eriyar gefen biyu da kebul na kayan haɗi. Hoto
- Bisa OFDM fasahar, kyamarar yanar gizo (HD kamara tare da ethernet) bada shawarar.
- Hanya biyu broadband wireless link kayan aiki (The receiver can get the audio-video download, Hakanan yana iya loda bayanan ga mai karɓa)
- Interface: 2X tashoshin Ethernet, 3Saukewa: RS232 tashoshin jiragen ruwa, shigarwar sauti-fitarwa (Ƙarin sarrafa sarrafawa) Idan kyamarar ku ita ce fitowar HDMI, sannan tana buƙatar ƙarin na'urar kododi, wanda zai iya rikodin bidiyo na HDMI da siginar sauti zuwa bayanan dijital zuwa wannan mai watsawa. A mai karba, zai iya haɗa kwamfutarka ko NVR kai tsaye, idan kuna buƙatar fitarwa zuwa mai saka idanu na HDMI, sannan kuma yana buƙatar ƙarin na'urar decoder don rikodin bayanan dijital zuwa bidiyon HDMI da siginar sauti.
- Default Data Interface is RS232, We also can modify it to TTL, Sbus, or RS485, please contact us if you need to know how to connect it to your flight controller, misali, Pix hawk 4.
- Data Port Baud Rate: Port Data 1 goyon bayan 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800; Port Data 2 and Data Port 3 support 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200.
- Antenna biyu: The SMA connector ANT1 main antenna works in transceiver mode, Eriya mai taimako na ANT2 yana aiki a yanayin karɓa.
- Band mitar aiki mara waya: 1427.9~ 1447.9MHz (1.4G) ko 806 ~ 826MHz (800MHz), or optional 2401.5~ 2481.5MHz (2.4G) tallafawa atomatik mita hopping a cikin mita band (default working frequency is 1.4G)
- Mara waya mara waya: 3MHz, 5MHz, 10MHz, 20MHz, duk nodes suna raba bandwidth aiki, kuma matsakaicin rabo na tsarin shine 30Mbps.
- daidaitowa yanayin: QPSK / QAM16 / QAM64 atomatik karbuwa.
- Yanayin hanyar sadarwa: aya-zuwa-aya, aya-zuwa-multi-point star network. (Misali, 6 cameras and a transmitter to one receiver.)
- Ikon watsawa mara waya: 10W.
- Kumburi yana karɓar hankali: -103 a 10MHz bandwidth.
- Support AES128 boye -boye da yanke hukunci.
- transmission nesa: 15km/30km/80km/150km na zaɓi.
- Ana iya duba tsarin na'urar da matsayin aiki mara waya ta hanyar Yanar Gizo UI of the network port or the serial port.
- 2KM mai watsa bidiyo mara igiyar waya mai tsayi mai tsayi mai rai na watsa bayanan hoton hoto: DC12 ~ 16V, 33dBm, Matsakaicin wutar lantarki na mai watsa bidiyo bai kai 12W ba, kuma matsakaicin ƙarfin amfani da mai karɓar bidiyo bai wuce 10W ba. (Mai haɗa wutar lantarki mai launin rawaya shine XT30PW / Saukewa: XT60PW) (Without Any external PA, the module has 300mW, 25dBm)
5KM mai watsa bidiyo mara igiyar waya mai tsayi mai tsayi mai rai na watsa bayanan hoton hoto: DC24 ~ 25V, 37dBm, Matsakaicin wutar lantarki na mai watsa bidiyo bai wuce 22W ba, kuma matsakaicin ƙarfin amfani da mai karɓar bidiyo bai wuce 16W ba.
10KM mai watsa bidiyo mara igiyar waya mai tsayi mai tsayi mai rai na watsa bayanan hoton hoto: DC24 ~ 30V, 40-41dBm, 28Ana ba da shawarar samar da wutar lantarki ta V, matsakaicin matsakaicin amfani da wutar lantarki kasa da 1.4A@28V, da buƙatun samar da wutar lantarki nan take zai iya kaiwa 2.8A@28V. - girman: 124*67.8*28.5mm (banda mai haɗawa da ke fitowa daga cikin harsashi, da dai sauransu.).
- Weight: 0.3W 133 grams, 2W 142 grams, 5W 142grams, 10W 242.5 grams
Input Output
| I / O | description |
| Ethernet 1 | 4PIN ZH1.5mm connector bridged with Ethernet2 |
| Ethernet 2 | RJ45 connector bridged with Ethernet1 |
| Saukewa: RS232*3 | 9PIN ZH1.5mm mai haɗawa, 3 tashar RS232 uart |
| Sauti a cikin / fita | 4PIN ZH1.5mm mai haɗawa, audio in and audio out port |
| • COFDM daidaitawa da H.264 / H.265 matsawar bidiyo | Saukewa: XT30PW-M |
| ANT1 | TX/RX Antenna port, SMA mace |
| ANT2 | Rx Antenna tashar jiragen ruwa, SMA mace |
| ikon LED | The red light on normally powered |
| Node LED | Blue light for Node type indicator |
| mahada LED | Green light, wireless link working status indicator |
Hanyar watsawa
gani Cikakkun bayanai na UI na Yanar Gizo
2W 27km Gwajin watsawa da taswirar karɓa
FAQs
Samar da wutar lantarki na wannan transmitter da baturi duk suna 3A@28V. A lokacin al'ada, batirin da muka gwada shine 7AH, yana iya aiki don 2-4 hours. Idan ka sayi baturi mai caji 15AH, yana iya ci gaba da aiki na kusan 4 ~ 8 hours.
Ba wai kawai canza mitar a ma'aunin UI na gidan yanar gizo cikin sauƙi ba, bayan canza mita, Hakanan yana buƙatar canza Power Amplifier a ciki da kuma eriya mai karɓa iri ɗaya. Don haka mai siye ya tabbatar da wane mitar da kuke buƙata kafin bayarwa. An keɓance eriya bisa ga wannan mitar.
Game da kebul na RF, our engineer doesn't recommend that you used it so long. Za a sami raguwar 0.5dB na kebul na RF na mita ɗaya. Domin 3 meters RF cable, za a rage ƙarfin siginar ta 1.5dB.
In order to support long-distance, It is better that you use the RF cable less than 1 mita?
A gaskiya, mai watsawa ya fi karami, yana da kyau a kiyaye ɗan gajeren tazara daga mai watsawa zuwa eriyar watsawa. Kebul na samar da wutar lantarki don mai watsawa da kebul na ethernet daga kamara zuwa mai watsawa zai iya tsayi saboda babu asara kamar kebul na RF.
a, the default video input is IP RJ45 ethernet port, idan ka Kamara shine HDMI ko SDI ko AHD, kawai da ƙaramin akwati guda ɗaya don magance wannan matsalar. Da fatan za a duba samfurin da ke ƙasa.
- If your area has a DVB-T or DVB-T2 digital television signal, da TV frequency range is 170-860Mhz, it has including 800Mhz, so choose 1.4G is better.
- Because the GPS antenna receives the GPS signal and the GPS direction on the drone is up, our transmitter antenna is pointing down to send the signal to the ground. Saboda, the 1.4G frequency effect on GPS is negligible.
The package size is 125 x 23 x 11cm. Cikakken nauyi：3.72KG， Volume Weight：7.5KG
Here is the full set picture.
Regarding frequency hopping, the engineer has some suggestions for you.
- As the system frequency range is 20Mb, if your bandwidth is chosen 20Mb, then it can not hop (only one point). If the bandwidth is chosen 10Mb, then you have two points to hop, if the bandwidth is chosen 5Mb, then you have 4 points to hop.
- If 1410Mhz has jammed, then 1420Mhz also has jammed, as the frequency is too close.
- When hopping frequency, the data or video transmission will be disconnected, and your video will be frozen.
- A lokacin al'ada, it is better to choose hopping is NOT.
- If your transmission distance is less than 15~22km, then we have another option to choose from, the frequency has 110Mb, and even if you choose 20Mb bandwidth, yana da 5 points to choose from for frequency hopping.
If you need to support S.bus, then please tell us before shippment, and we will modify our RS232 to TTL.
Our TX900 has three RS232 ports. If you need it to support S.bus, just need plus one small converter from S.BUS to RS232 is ok. ( Mini SBUS Conversion Module Uart to Sbus, Sbus to Uart ).
Please tell us if you need sbus port before delivery. Our engineer will modify the D2 port from RS232 to Sbus.
Bayanan halin haɗin mara waya ta RSSI yana buƙatar abokan ciniki (kamar masu kula da jirgin) don aika umarnin AT da hannu don samun shi. Ana iya samun ta ta hanyoyi biyu:
- Sanya UART3 (tashar data 3rd) a matsayin AT umarni serial port, sannan aika umarnin AT ta hanyar UART3 (D3) a samu. https://ivcan.com/change-d3-from-transparent-serial-port-to-at-command/
- Sabunta sigar firmware 1.5.1 ko sama, ta yadda za a sami ƙarin uwar garken TCP a ciki don abokan ciniki don shiga ta hanyar TCP don aika umarnin AT don samun matsayin mara waya..
- Ana amfani da hasken LED don nuna halin haɗin mara waya (misali, idan an katse hanyar haɗin mara waya, hasken zai fita), and there is no dedicated external pin to notify the customer flight control.
Or see the UART AT command list nan.
or see https://ivcan.com/how-to-get-the-rssi-and-snr-on-the-drone-transmitter/
- The serial port of our wireless video transmission is transparent, and no data is actively sent to the flight controller. This is controlled by the ground station.
- It won't send the failsafe command, but you can see the link status light from the signal indicator.
- Here is the link status signal strength indicator means
- Not Bright: Indicates that the wireless link of the module is not connected
- Red: Indicates that the wireless link of the module has been connected, but the wireless signal strength is very weak
- Lemu: Indicates that the wireless link of the module has been connected, and the wireless signal strength is medium
- Green: Indicates that the wireless link of the module has been connected, and the wireless signal strength is very strong
- We understand that you hope to have this function, If aircraft loses signal during flight it will not return to home because flight controller will not understand that rc link is lost.
- You need to see the link status LED light, if it is Orange or Red, you should control the plane back in advance.
- You also can get the RSSI at the below windows
Please check the upgrade firmware setps, download the latest upgrade firmware at the below link.
https://ivcan.com/how-to-upgrade-the-latest-firmware-of-the-wireless-video-transmitter-and-receiver
At the normal usage, one node as the transmitter, another node as the receiver. If you need to support long range or over a mountain top, like the below picture, a, please buy 3rd nord as the reapter.
You just need to put the 3rd node in the middle and set the 3rd node be a 2D3U then ok.
How to set 3rd node be 2D3U?
Set with AT command:
at+cfun=0
at^dstc=0
at+cfun=1
Restart the link device after the operation
On the Web UI parameter mangagment page and debug section,
AT command
Input AT^DGMR?
If you get result is 6602, then it is 15km sigar.
If you get result is 6603, then it is 30km sigar.
4K video is supported.
4K video stream generally has more than 8Mbps, and 1080P video generally has more than 2M, so the distance of our wireless video transmission when transmitting 4K video will be shorter than that of 1080P.
In one word, the higher the definition of the video, guntu nisan watsawa.
The video compression is smaller, and the transmission distance is supported farther.
In the process of video transmission, if there is data loss, the picture will appear mosaic or stagnation, freeze and other phenomena.
There will be a limited number of retransmissions at the wireless link level (i mana, data errors will also occur if the situation is not good). The upper-layer application on the end will not be aware of it, nor will it ask the sender to retransmit.
If the signal of the wireless link is not good at a certain point after the distance is extended, and there are always bit errors, it is impossible to design it to be retransmitted all the time, so that the end user experience will be very poor.
The wireless link layer has a limited retransmission mechanism. We have tested the tcp protocol for transmission at the video transmission layer (trying to retransmit on the upper layer through the tcp protocol), but the test found that there is no obvious improvement, and it will also lead to uncontrollable delays.
- The heat generated by the aircraft side is much larger than that of the ground side. If the fan is running, check whether the air inlet and outlet of the lower fan (the positions of the heat sinks at both ends) are blocked
- Try changing the power supply of the air unit transmitter from 24V to 12~18V (the transmit power will be reduced to about 35~36DB)
- Slightly reduce the transmit power of the aircraft by the below AT commands: AT^DSSMTP="23" Reboot after setting
tambaya: Are these settings maximum power of the module? (24 dBm)
Amsa: 24dBm is the maximum output power of the link Module, and the gain of the PA (about 14dBm) needs to be added. The actual transmission power after the 24V power supply PA output is about 38dBm.
|
# |
Procurement Specifications |
YesNo |
Bayanan kula |
|
1 |
The unit shall operate in the VHF BAND and UHF band with its RF transmissions. |
UHF |
1427.9-1467.9MHz |
|
2 |
The unit shall have an RF output power of 27 dBm or more. |
a |
2W 33dBm 5W 37dBm 10W 40-41dBm |
|
3 |
The unit shall provide Serial (Bidirectional, Fullduplex) as data interface. (RS232 or RS422) |
a |
RS232 bidirectional full duplex |
|
4 |
The unit power consumption shall not exceed 25W. |
a |
<22W |
|
5 |
The unit mass shall not exceed 250 grams.
|
a |
<150 grams (142grams) |
|
6 |
The unit shall have a data rate of at least 4.8 Mbps zuwa 31.67Mbps |
a |
RS232:>50kBps Ethernet:>2M Bps |
Lead time: 10 days for small quantity order.
HS code: 8517629900
The difference between the air unit (watsawa) and ground unit (mai karɓar) is two points:
One is the device type: Air unit (watsawa) is the kumburin shiga and the ground unit (mai karɓar) is the central node.
Two is the rate ratio of the downlink and up link. Over 30km, the best rate ratio is 4:1 ko 3:2.
If you don't want to connect the receiver ethernet cable directly to the computer. Then it is not easy to access the receiver at your local network.
Here is two solutions for you.
1. Add the IP address of the 192.168.1.x network segment on the PC side (the PC can be configured with multiple network segment IP addresses)
2. Modify the IP of the wireless video data receiver from 192.168.1.12 to the address of the 10.220.20.x network segment to meet your local network.
For further questions and solutions, please talk with your local area network workmate or engineer, our receiver is like a computer with IP address, it should keep the network segment IP address at the same, misali, 192.168.1.xxx.
- a, there are three solutions to do that.
- TX900 has three data ports. Distinguish through different transparent serial ports, such as D2 to control relay aircraft and D3 to control mission aircraft. The disadvantage is that the TX900 receiver needs to be connected to two serial ports to send instructions separately.
- Use the same transparent serial port to send data in bulk, and then add layer protocols (such as header information) to the data to distinguish which aircraft should receive and process the data. The disadvantage is that the processing of sending and receiving data is complicated.
- Or use two receivers: One receiver is for the mission plane (watsawa), and another receiver is for the repeater drone. The connection and operation are easier.
download & Operation Guide
Latest Test video from mountaintop to 27 km away to the seaside to check the long-range effect and operate at the receiver
Optional TX900B for some clients need frequency hopping function.
- TX900B-2W supports the frequency range is 1420~1530MHz, and there is 110Mb bandwidth to use. (800Mhz frequency range does not support this 110Mb bandwidth)
- The customer can set the working bandwidth as 1.4M/3M/5M/10M/20MHz (However 1.4M/3MHz may not be suited for video transmitting). Then TX900B-2W can work in FHSS mode (Mitar-hopping yada bakan) and the central working frequency will be automatically selected by the system and may do frequency hopping (between 1420~1530MHz) during its working.
- Customers can also plan to use the frequency channels in the whole 1420~1530MHz and set the device to work in the fixed frequency channels too.
- TX900B-2W supports the longest distance at 22km.
- Except for the frequency range supported and the longest distance, the physical appearance, dubawa, UI, aiki, da sauransu, the TX900B-2W is the same as the existing TX900B-15km-2W.
- TX900B-2W only supports a frequency range is 1420~1530MHz, it does not support 800MHz and 2.4GHz frequency ranges.
- There are two versions, TX900B-2W-15km, and TX900B-2W-22km.
- As the TX900B-2W frequency range is 110Mb, so if you configure the working bandwidth as 10Mb, then you will get 11 points to hopping.
- TX900B supports 110Mb bandwidth for frequency hopping and only has three transmission ranges optional, 22km, 55km, kuma 150km.
download
| 1 | D3 serial port function configuration |
| 2 | TX900 transparent transmission and UDP serial port instructions |
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