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.
Cov Txheej Txheem
Nta
- Dual Antenna reception
- Support working frequency range: 160MHz~860MHz, the center working frequency can be configured;
- Wireless bandwidth is configurable;
- The sensitivity of dual antenna reception -100±1dbm (QPSK 8MHz);
- Wireless tau txais cov ntaub ntawv raws li txoj cai (such as received signal strength, cua interface tus nqi, npaum li cas, ua hauj lwm zaus, wireless bandwidth, thiab lwm yam.) can be superimposed/not displayed on the video screen through the OSD switch button, or output to the serial port (kev cai dab khiav) ;
- Low-latency H264 yees duab decoding, support 1080P@60 decoding playback;
- Audio thiab yees duab tso zis (HDMI, CVBS, USB port simultaneous output):
- HDMI Type-A port audio and video output
- CVBS (Lotus Head) AV lub tso zis video
- Output video stream to the phone/tablet decoding display via USB port
- Support video receiving and decrypting function (matching with video encryption at the transmitting end);
- Support TF card or USB disk video recording;
- Provide one-way single-direction transparent data transmission serial port;
- Provide parameters to configure the serial port for working settings (such as center working frequency, wireless bandwidth, receiving decryption password);
- Fais fab mov: 6£15V, working power consumption is 230mA@12V.
- Tshuab loj loj: 115x90x34mm
- Machine weight: 243 grams
Connector:
- ANT-in: wireless signal input antenna interface, SMA external threaded inner hole
- HDMI: A type HDMI carrier, high-definition audio and video output interface
- CVBS: analog video output interface
- AL/AR: left and right channel analog audio output
- Hwj chim txuas: 3PIN 2.54mm socket
- USB interface:
- External phone or tablet can be used to output audio and video to mobile phone or tablet for decoding display
- Recording video can be connected to an external USB flash drive or USB hard disk
- OSD khawm:
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:- RF:338.0BW MHz:4.0MHz
QPSK CR:2/3 GI:1/16
HUAB CUA:3.90Mbps
VBR:3.05Mbps AES tawm
SIG1:27 SIG2:22
ber1:0.14% ber2:100.00%
Tim REC tawm tsis cia - RF indicates the center operating frequency, thiab BW indicates the working bandwidth.
QPSK is the modulation mode, CR yog lub chaws convolutional, thiab yog tus ceev xwm yuav luv GI.
HUAB CUA 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, thiab SIG2 refers to the other antenna.
Ber1 refers to the BER error rate near the HDMI port antenna, thiab ber2 refers to another antenna.
REC OFF means no video storage
- RF:338.0BW MHz:4.0MHz
- When the wireless receiving signal is interrupted or weak, yuav tu ncua qhov zis video screen yuav (qhov tshuaj ntsuam teeb liab tsawg zaus rov yuav yuav yuav huv), and display: Disconnected, no signal
- 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. Yog tus TF daim ntawv no tsis tso, Nws yog kaw cov USB flash tsav. Yog hais tias lawv yeej tsis tso, lawv yuav tsis raug kaw.
- Txuas qhov taw qhia tau hais tias: The wireless receiving link working status indicator lights up after the system is started and blinks when the receiving signal is normal.
- REC indicator: The video recording indicator will flash at the low frequency when recording video, otherwise the high frequency will flash.
- PWR indicator: Qhov taw qhia fais fab.
- CFG serial port: Parameter configuration Serial port, you can configure wireless receiving related parameters, such as center working frequency, wireless bandwidth, decryption password, thiab lwm yam. Vcan provides a matching parameter configuration panel SconB to facilitate user parameter setting.
- Data serial port: Pob tshab ntawv kis serial chaw nres nkoj. The serial port data of the transmitter can be wirelessly transmitted to the receiver and output from the serial port.
- TF daim interface: Used for software upgrade maintenance or for storing video.
Ceeb toom
Thaum lub COFDM-905T transmitter and receiver COFDM-905T tsim ib qhov system point-to-point video wireless kis, qhov qhia tau qeeb video:
Peb indicators as video qeeb, tus nqi ntsis video, and air interface rate are mutual influence and mutual restraint. Thaum cov pa interface yog siab tshaj 5 lub sij hawm cov video chaws twg, lub qeeb video no yam tsawg kawg nkaus. Qhov no, qhov kev kuaj ntawd sij yog tias cov video ncua yog hais txog 60 milliseconds when the code is transmitted at 720P@60, thiab cov video ncua yog hais txog 130 milliseconds at 1080P@60. Lub qeeb hais txog qhov ncua ntawm cov HDMI video input kis kawg rau qhov HDMI video tso zis ntau kawg tau nyiaj, excluding tus ncua ntawm cov koob yees duab front-end txog tag kis (peb li qeeb rau ntawm ib hom SLR yees thaum txog 70 milliseconds, thiab qhov ncua ntawm ib tug naas ej hom kev ua si lub koob yees duab ntawm txog 130 milliseconds). Rau feem ntau cov ntawv scenarios, cov video qeeb yog teem rau 200ms li los vim.
Thaum lub COFDM-905T transmitter thiab cov COFDM-905R receiver tsim ib qhov system point-to-point video wireless kis, yuav kis tau tus mob ntawd:
Wireless kis tau tus mob ntawd muaj feem xyuam rau ntau yam xws li kuaj puag ncig, cuam Ambient electromagnetic, tej yam kev mob occlusion, pa av noo, ua hauj lwm zaus, wireless bandwidth, thiab kis thiab tau txais antennas. Cov kev ntsuas tau: ib tug neeg kuaj, unmanned aircraft-mounted ST100 transmitter to fly about 100 siab meters, koj muab tau 4M QPSK wireless bandwidth, 700MHz chaw kev khiav hauj lwm zaus, 1W kis fais fab, transmitter kav hlau txais xov 3dBi ib ncig, Tau muab iav fiber ntau kav hlau txais xov koj qhov nce ntawm txog 10dBi, the distance of up to 16km (yees duab du); peb muaj peb li kev kuaj hauv Shenzhen, community launch kawg rau qhov flyover, kav hlau txais xov hose zoo tib yam (hais txog koj qhov nce 3dBi), 340Community launch MHz, QPSK 8M Bandwidth, tus kav hlau txais xov fiberglass kawg tau nyiaj, thiab ib Yagi kav hlau txais xov, hais txog 2.2 meters loj rau ntawm tus ncej, 2.2 kilometers tseg, txhais yees duab du, a small number of high-rise buildings between the transmitter and receiver, txoj kev mus txog visually 20 dabtsi yog khoov degrees. Vim muaj cai txwv tsis pub, tsis muaj kev xeem ntxiv tau ua.
Connector
Raws li cov
75 x 55 x 25 hli
RF kev xeem
Khiav hauj lwm Center zaus 470MHz, Fais Amplifier: 1W
Khiav hauj lwm Center zaus 700MHz, Fais Amplifier: 1W
Txawj tej yam ntxiv
Yuav ua li cas rau upgrade TX ntawm 720P rau 1080P?
Kev
Muaj cov tsis muaj kev kaj.