FAQ for wireless video transmission

1. a, Ana iya canza kewayon mitar daga 170Mhz (mafi da 220Mhz) zuwa 860Mhz. Don haka yana iya aiki da kyau a 260Mhz band.
2. Ya kamata a canza mitar zuwa iri ɗaya akan mai aikawa da karɓa. Na sanadi, Amplifier Power da mitar eriya yakamata su canza mitar iri ɗaya. (Kuna buƙatar siyan amplifier da eriya don watsawa da mai karɓa don saduwa da canjin mitar ku).
3. Domin inganta hankali na watsawa da karɓa, Yawan bandwidth yawanci ana sanya shi kunkuntar sosai (mita na tsakiya ±15MHz, don haka bandwidth ya kamata ya zama 30Mhz). Ƙarfin wutar lantarki na mai watsawa da mitar eriya an keɓance su musamman bisa ga mitar da kuke buƙata.
4. Zai fi kyau idan kun ba da oda, don Allah gaya mani irin mitar aiki da kuke buƙata. Injiniyoyin mu za su canza mitar mai watsawa da mai karɓa, sannan kuma gyara PA da eriya ta al'ada bisa ga wannan kewayon mitar don tabbatar da mafi kyawun hankali da goyan bayan mafi tsayin watsa nisa.
5. Mitar tsoho shine 590Mhz, Da 30Mhz (+/-15MHz), zaka iya canza shi ba tare da gyaggyara Power Amplifier da eriya ba. Misali, 578MHz, 584MHz, 590MHz, 596MHz, da 602Mhz.
6. Idan kana buƙatar canza mitar watsawa da bandwidth, kana buƙatar kayan aiki na musamman na allon saita sigogi, don Allah a duba hoton da ke ƙasa, ba kayan haɗi ba ne, da fatan za a saya a ƙarin farashi ko tuntube mu kafin yin oda.

a, yana goyan bayan aika bidiyo da bayanan UART daga mai watsawa da mai karɓa.
Kamar yadda yada ta hanya daya ce, don haka ba zai iya aika umarnin sarrafawa daga mai karɓa zuwa mai aikawa ba.

Idan kana buƙatar aika umarnin sarrafawa ko wasu bayanai daga mai karɓa don sarrafa wasu na'urori kamar kyamarori ko drones a mai watsawa., za ku iya ƙara saitin kayan watsa dijital mai arha, tuntube mu, kuma za mu iya keɓance muku shi.

Da fatan za a duba ma'anar UART akan mai watsawa da mai karɓa a mahaɗin da ke ƙasa. Da fatan za a gaya mani idan kuna son samun kebul na gubar. (tsoho a'a)

Tsohuwar wutar lantarki mai watsawa ita ce 2 Watts, don haka yana iya tallafawa 30 KM a layin-na gani.

Hoton da ke ƙasa shine nisan da aka gwada daga dutsen zuwa bakin teku.

Idan kuna son watsa dogon zango, za ka iya ƙara ƙarfin amplifier. Baya ga watt daya da watts biyu, za mu iya kuma yi 5 watts, 10 watts, kuma 20 watts don zabinku. Manyan amplifiers kuma suna buƙatar manyan batura da goyan baya na yanzu.

Farashin 20W PA, wutar lantarki ya kamata ya zama 24 ~ 28V. Kawai a 28 volts na iya samun ƙarfin ƙarfin aiki mafi kyau.

Injiniyan mu na iya canza mitar zuwa 300Mhz daga tsoho 590Mhz, Antenna, da PA a cikin sito ne 590Mhz, 300Mhz yana buƙatar makonni biyu don daidaitawa, don haka lokacin isarwa yana buƙatar tsayi fiye da 590Mhz na mu.

Cikakken saitin tsoho

1. SD Transmitter ( Farashin 0.5W, 1W, 2W, 5W, 10W, 20W, 50W na zaɓi bisa ga buƙatar ku)
2. SD Transmitter eriya
3. HDMI CVBS mai karɓar fitarwa tare da menu na sarrafawa da ƙaramin allo
4. 0.8-eriya mai karɓar mita 1 inji mai kwakwalwa. (Akwai nau'i biyu na shigarwa ko gyara eriya: 1. Magnetic sucker tushe eriya, 2. Default U-type clamp FRP fiberglass eriya )
5. ZABI, allon daidaita siga don watsa bidiyo mara waya.

(Idan kana buƙatar eriya tushe mai tsotsa mai maganadisu, mai bayyana ko mai ɗaukar hoto yana tsammanin samfuran maganadisu zasu tsoma baki tare da amincin jirginsu, don haka farashin jigilar kaya ya fi eriya manne nau'in U. )

Tsohuwar cikakken tsarin girman fakitin

1. 84*21*12CM
2. Babban Nauyi 4.5KG
3. Idan ka zaɓi eriya sama da 100cm da eriyar tushen sucker na maganadisu, Wasu masu jigilar kaya za su cajin ƙarin kudade, kamar ƙarin dogayen kudade da ƙarin kuɗi don abubuwa masu ƙarfi masu ƙarfi.

1. Saitunan sigar watsawa ya bambanta da wanda ke kan mai karɓa. Firmware akan allon daidaita ma'aunin ya bambanta da mai watsawa da mai karɓa, ba za a iya amfani da su tare.
2. Allon daidaita siginar watsawa na iya daidaita siginar attenuation akan mai watsawa. Kowane 0.3db zai rage 0.5W PA.

tambaya: Shin yana yiwuwa a canza ikon fitarwa (ciki PA 0,5 w, 1 w, 2 w) ta hanyar hukumar daidaitawa?

1. Kamar yadda aka amsa a sama, za ku iya daidaita ƙarfin fitarwa ta hanyar saita sigogi na ATTEN ta hanyar kayan aikin allo na sigina akan mai watsawa. (Wannan kayan aikin bai haɗa da fakitin tsoho ba, kana bukatar ka sanar da cewa kana son samun wannan kayan aiki lokacin da ka yi oda)
2. Idan kun sayi 2W PA, sannan zaka iya saita shi 0.5W, 1W, amma ba zai iya canza shi zuwa 5W ba.
3. Hakanan zamu iya sanya shi zuwa 5W, 10W, 20W, da 50W idan kuna buƙatar tallafawa dogon zango.

No.

Wannan mai watsa bidiyo mara waya yana goyan bayan kamarar CVBS ko shigarwar bidiyo kawai, wani nau'in kyamarar bidiyo yana buƙatar ƙarin akwatin mai canzawa.

No. Yana da COFDM (DVB-T) fasahar.

Don haka kewayon mitar COFDM shine 170-860Mhz. Yana iya tallafawa 477, 610, 675, 724, 816MHz, amma ba zai iya tallafawa 970, 1180, 1230 MHz.

Mai watsa samfurin mu na musamman zai iya tallafawa duk jeri na sama, amma mai karɓa yana buƙatar amfani da toshewar ƙasa.

Domin ba da damar tsarin watsawar mu mara waya ya goyi bayan faffadan kewayo da mafi kyawun sigina, gabaɗaya muna saita mitar aiki zuwa wani wuri (170~860Mhz), kuma kewayon sa mai goyan baya ƙari ne kawai ko ragi 15Mhz. Misali, mitar cibiyar shine 590Mhz, matsakaicin mitar tallafi ya kamata ya zama 575Mhz ~ 605Mhz, PA da eriya an keɓance su musamman bisa ga wannan mitar ta tsakiya.

a

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.

1. 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.
2. 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.

1. 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.
2. If 1410Mhz has jammed, then 1420Mhz also has jammed, as the frequency is too close.
3. When hopping frequency, the data or video transmission will be disconnected, and your video will be frozen.
4. A lokacin al'ada, it is better to choose hopping is NOT.
5. 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.

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:

1. 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/
2. 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..
3. 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/

1. 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.
2. It won't send the failsafe command, but you can see the link status light from the signal indicator.
3. Here is the link status signal strength indicator means
   1. Not Bright: Indicates that the wireless link of the module is not connected
   2. Red: Indicates that the wireless link of the module has been connected, but the wireless signal strength is very weak
   3. Lemu: Indicates that the wireless link of the module has been connected, and the wireless signal strength is medium
   4. Green: Indicates that the wireless link of the module has been connected, and the wireless signal strength is very strong
4. 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.
5. You need to see the link status LED light, if it is Orange or Red, you should control the plane back in advance.
6. 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.

1. 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
2. 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)
3. 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.

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.

1. a, there are three solutions to do that.
2. 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.
3. 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.
4. 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.