COFDM draadlose video-ontvanger HDMI cvbs-invoer mini modulator module RX langafstand fpv uav

COFDM Wireless Video Receiver HDMI CVBS output

COFDM Wireless Video Receiver HDMI CVBS output mini modulator module long distance fpv UAV Data Transmission UART config Recorder

Work for COFDM-905T

 
HD digital wireless video transmission receiver COFDM-905R
Built-in Decoder board and COFDM dual-antenna receiving demodulation module, the whole machine adopts aluminum alloy casing, high receiving sensitivity, low decoding display delay, high-definition video output stable and clear.

Kenmerke

1. Dual Antenna reception
2. Support working frequency range: 160MHz~860MHz, the center working frequency can be configured;
3. Wireless bandwidth is configurable;
4. The sensitivity of dual antenna reception -100±1dbm (QPSK 8MHz);
5. Wireless receiving status information (such as received signal strength, air interface rate, datatempo, werk frekwensie, draadlose bandwydte, ens.) can be superimposed/not displayed on the video screen through the OSD switch button, or output to the serial port (customized) ;
6. Low-latency H264 video decoding, support 1080P@60 decoding playback;
7. Audio and video output (HDMI, CVBS, USB port simultaneous output):
   1. HDMI Type A port audio and video output
   2. CVBS (Lotus Head) AV audio and video output
   3. Output video stream to the phone/tablet decoding display via USB port
8. Support video receiving and decrypting function (matching with video encryption at the transmitting end);
9. Support TF card or USB disk video recording;
10. Provide one-way single-direction transparent data transmission serial port;
11. Provide parameters to configure the serial port for working settings (such as center working frequency, draadlose bandwydte, receiving decryption password);
12. Kragtoevoer: 6~15V, working power consumption is 230mA@12V.
13. Machine size: 115x90x34mm
14. Machine weight: 243 grams

aansluiting:

1. ANT-in: wireless signal input antenna interface, SMA external threaded inner hole
2. HDMI: A type HDMI carrier, high-definition audio and video output interface
3. CVBS: analog video output interface
4. AL/AR: left and right channel analog audio output
5. krag koppelaar: 3PIN 2.54mm socket
6. USB koppelvlak:
   1. External phone or tablet can be used to output audio and video to mobile phone or tablet for decoding display
   2. Recording video can be connected to an external USB flash drive or USB hard disk
7. OSD button:
   The receiving status information displays the on/off button, and the long press button can switch the switch status, and the switch status will be powered off. When the reception status information display is turned on, it is displayed in red in the upper left corner of the output video screen:
   1. RF：338.0MHz BW：4.0MHz
      QPSK CR：2/3 GI：1/16
      AIR：3.90Mbps
      VBR：3.05Mbps AES OFF
      SIG1：27 SIG2：22
      ber1：0.14% ber2：100.00%
      REC OFF No Storage
   2. RF indicates the center operating frequency, en BW indicates the working bandwidth.
      QPSK is the modulation mode, CR is the convolutional code rate, and GI is the guard interval.
      AIR is the air interface rate
      VBR is the video bitrate, AES OFF means no encryption
      SIG1 refers to the received signal strength near the HDMI port antenna, en SIG2 refers to the other antenna.
      Ber1 refers to the BER error rate near the HDMI port antenna, en ber2 refers to another antenna.
      REC OFF means no video storage
8. When the wireless receiving signal is interrupted or weak, the output video screen will be interrupted (the re-received signal screen will be automatically restored), and display: Disconnected, no signal
9. REC button: Video recording on/off button, short press button to switch state, start recording after power is detected. The system defaults to recording to the TF card. If the TF card is not inserted, it is recorded to the USB flash drive. If they are not inserted, they will not be recorded.
10. Link indicator: The wireless receiving link working status indicator lights up after the system is started and blinks when the receiving signal is normal.
11. REC indicator: The video recording indicator will flash at the low frequency when recording video, otherwise the high frequency will flash.
12. PWR indicator: Power Indicator.
13. CFG serial port: Parameter configuration Serial port, you can configure wireless receiving related parameters, such as center working frequency, draadlose bandwydte, decryption password, ens. Vcan provides a matching parameter configuration panel SconB to facilitate user parameter setting.
14. Data serial port: Transparent data transmission serial port. The serial port data of the transmitter can be wirelessly transmitted to the receiver and output from the serial port.
15. TF card interface: Used for software upgrade maintenance or for storing video.

nota

Wanneer die COFDM-905T-sender en COFDM-905T-ontvanger 'n punt-tot-punt draadlose video-oordragstelsel vorm, die video vertraging aanwyser:
Die drie aanwysers van video vertraging, video bistempo, en lug-koppelvlaktempo is die wedersydse invloed en wedersydse selfbeheersing. Wanneer die lugkoppelvlaktempo groter is as 5 keer die videokode koers, die video vertraging is minimum. In hierdie geval, die werklike toets is dat die videovertraging omtrent is 60 ms wanneer die kode by 720P@60 versend word, en die video vertraging is omtrent 130 ms by 1080P@60. Die vertraging verwys na die vertraging vanaf die HDMI-video-invoer by die uitsaaikant na die HDMI-video-uitset by die ontvangkant, uitgesluit die vertraging van die voorkantkamera van die uitsaaikant (ons het die vertraging van 'n handelsmerk-SLR-kamera ongeveer gemeet 70 Me, en die vertraging van 'n bekende handelsmerk sportkamera omstreeks 130 Me). Vir die meeste toepassingscenario's, die video vertraging is by verstek op ongeveer 200ms gestel.
Wanneer die COFDM-905T-sender en die COFDM-905R-ontvanger 'n punt-tot-punt draadlose video-oordragstelsel vorm, die transmissieafstand is:
Die draadlose transmissieafstand hou verband met baie faktore soos die toetsomgewing, omringende elektromagnetiese interferensie, okklusie toestande, lug humiditeit, werk frekwensie, draadlose bandwydte, en uitsaai- en ontvangantennas. Werklike toetsuitslae: 'n kliënt toets, onbemande vliegtuig gemonteerde ST100-sender om rond te vlieg 100 meter hoog, gestel op 4M QPSK draadlose bandwydte, 700MHz sentrum bedryfsfrekwensie, 1W oordragkrag, sender antenna 3dBi om, Ontvang dubbel glasvesel antenna wins van ongeveer 10dBi, afstand van tot 16km (video glad); ons eie padtoets in Shenzhen, die lanseringseinde op die oorbrugging, gewone slang antenna (ongeveer 3dBi wins), 340MHz bekendstelling, QPSK 8M bandwydte, 'n veselglasantenna aan die ontvangkant, en 'n Yagi-antenna, oor 2.2 meter hoog op die paal, 2.2 kilometers ver, hoë-definisie video glad, 'n klein hoeveelheid hoë geboue tussen die sender en ontvanger, die pad visueel oor 20 grade buig. As gevolg van voorwaardelike beperkings, geen verdere padtoetse is gedoen nie.

aansluiting

grootte

75 x 55 x 25 mm

RF-prestasietoets

Bedryfsentrumfrekwensie 470MHz, Kragversterker: 1W


Bedryfsentrumfrekwensie 700MHz, Kragversterker: 1W

opgradering

Hoe om TX van 720P na 1080P op te gradeer?