COFDM Penerima Video Nirkabel HDMI cvbs input modul modulator mini RX jarak jauh fpv uav

Penerima Video Nirkabel COFDM keluaran HDMI CVBS

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

Bekerja untuk COFDM-905T

 

HD digital wireless video transmission receiver COFDM-905R
Papan Dekoder internal dan modul demodulasi penerima antena ganda COFDM, seluruh mesin mengadopsi casing paduan aluminium, sensitivitas penerimaan yang tinggi, penundaan tampilan decoding rendah, keluaran video definisi tinggi stabil dan jernih.

Fitur

1. Penerimaan Antena Ganda
2. Mendukung rentang frekuensi kerja: 160MHz~860MHz, frekuensi kerja pusat dapat dikonfigurasi;
3. Bandwidth nirkabel dapat dikonfigurasi;
4. Sensitivitas penerimaan antena ganda -100±1dbm (QPSK 8MHz);
5. Informasi status penerimaan nirkabel (seperti kekuatan sinyal yang diterima, tingkat antarmuka udara, kecepatan data, frekuensi kerja, bandwidth nirkabel, dll.) dapat ditumpangkan/tidak ditampilkan pada layar video melalui tombol sakelar OSD, atau output ke port serial (disesuaikan) ;
6. Dekode video H264 latensi rendah, mendukung pemutaran decoding 1080P@60;
7. Keluaran audio dan video (HDMI, CVBS, Output simultan port USB):
   1. HDMI Type A port audio and video output
   2. CVBS (Kepala Teratai) Keluaran audio dan video AV
   3. Output aliran video ke tampilan decoding ponsel/tablet melalui port USB
8. Mendukung fungsi penerimaan dan dekripsi video (cocok dengan enkripsi video di ujung transmisi);
9. Mendukung kartu TF atau perekaman video disk USB;
10. Menyediakan port serial transmisi data transparan satu arah satu arah;
11. Berikan parameter untuk mengkonfigurasi port serial untuk pengaturan kerja (seperti frekuensi kerja pusat, bandwidth nirkabel, menerima kata sandi dekripsi);
12. Catu daya: 6~15V, konsumsi daya kerja adalah 230mA@12V.
13. Ukuran mesin: 115x90x34mm
14. Berat mesin: 243 gram

Konektor:

1. ANT-in: antarmuka antena masukan sinyal nirkabel, Lubang dalam berulir eksternal SMA
2. HDMI: Tipe pembawa HDMI, antarmuka keluaran audio dan video definisi tinggi
3. CVBS: antarmuka keluaran video analog
4. AL/AR: left and right channel analog audio output
5. Kekuatan konektor: 3PIN 2.54mm socket
6. USB antarmuka:
   1. External phone or tablet can be used to output audio and video to mobile phone or tablet for decoding display
   2. Perekaman video dapat dihubungkan ke flash drive USB eksternal atau hard disk USB
7. tombol OSD:
   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. Federasi Rusia：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. Federasi Rusia indicates the center operating frequency, Dan 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, Dan SIG2 refers to the other antenna.
      Ber1 refers to the BER error rate near the HDMI port antenna, Dan 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. Jika kartu TF tidak dimasukkan, itu direkam ke flash drive USB. Jika tidak dimasukkan, mereka tidak akan dicatat.
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, seperti frekuensi kerja pusat, bandwidth nirkabel, decryption password, dll.. Vcan provides a matching parameter configuration panel SconB to facilitate user parameter setting.
14. Port serial data: Port serial transmisi data transparan. The serial port data of the transmitter can be wirelessly transmitted to the receiver and output from the serial port.
15. Antarmuka kartu TF: Used for software upgrade maintenance or for storing video.

Catatan

When the COFDM-905T transmitter and COFDM-905T receiver form a point-to-point wireless video transmission system, the video delay indicator:
The three indicators of video delay, video bit rate, and air interface rate are the mutual influence and mutual restraint. When the air interface rate is greater than 5 times the video code rate, the video delay is minimum. Dalam hal ini, the actual test is that the video delay is about 60 ms when the code is transmitted at 720P@60, and the video delay is about 130 ms at 1080P@60. The delay refers to the delay from the HDMI video input at the transmitting end to the HDMI video output at the receiving end, tidak termasuk penundaan kamera depan dari ujung transmisi (we measured the delay of a brand SLR camera at about 70 MS, and the delay of a famous brand sports camera at about 130 MS). For most application scenarios, the video delay is set to about 200ms by default.

When the COFDM-905T transmitter and the COFDM-905R receiver form a point-to-point wireless video transmission system, the transmission distance is:
The wireless transmission distance is related to many factors such as the test environment, ambient electromagnetic interference, occlusion conditions, air humidity, frekuensi kerja, bandwidth nirkabel, and transmitting and receiving antennas. Actual test results: a customer test, unmanned aircraft mounted ST100 transmitter to fly about 100 tinggi meter, set to 4M QPSK wireless bandwidth, 700MHz center operating frequency, 1W transmit power, transmitter antenna 3dBi around, Receiving double glass fiber antenna gain of about 10dBi, distance of up to 16km (video smooth); our own road test in Shenzhen, the launch end on the flyover, ordinary hose antenna (about 3dBi gain), 340MHz launch, QPSK 8M Bandwidth, a fiberglass antenna at the receiving end, and a Yagi antenna, about 2.2 meters high on the pole, 2.2 kilometers away, high-definition video smooth, a small amount of high-rise buildings between the transmitter and receiver, the road visually about 20 degrees bending. Due to conditional restrictions, no further road tests were made.

Konektor

Ukuran

75 X 55 X 25 mm

Uji Kinerja RF

Frekuensi Pusat Operasi 470MHz, Penguat Daya: 1W

Frekuensi Pusat Operasi 700MHz, Penguat Daya: 1W

Meningkatkan

How to upgrade TX from 720P to 1080P?