सीओएफडीएम वायरलेस वीडियो रिसीवर एचडीएमआई सीवीबीएस आउटपुट मिनी मॉड्यूलेटर मॉड्यूल आरएक्स लंबी दूरी एफपीवी यूएवी

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.

विशेषताएं

1. Dual Antenna reception
2. Support working frequency range: 160मेगाहर्ट्ज~860 मेगाहर्ट्ज, the center working frequency can be configured;
3. Wireless bandwidth is configurable;
4. The sensitivity of dual antenna reception -100±1dbm (क्यूपीएसके 8 मेगाहर्ट्ज);
5. Wireless receiving status information (such as received signal strength, air interface rate, आधार - सामग्री दर, कार्य आवृत्ति, वायरलेस बैंडविड्थ, etc.) can be superimposed/not displayed on the video screen through the OSD switch button, or output to the serial port (अनुकूलित) ;
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) एवी ऑडियो और वीडियो आउटपुट
   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, वायरलेस बैंडविड्थ, receiving decryption password);
12. Power supply: 6~15V, working power consumption is 230mA@12V.
13. Machine size: 115x90x34mm
14. Machine weight: 243 grams

योजक:

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. शक्ति योजक: 3PIN 2.54mm socket
6. USB इंटरफ़ेस:
   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. ओएसडी बटन:
   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. आरएफ：338.0मेगाहर्ट्ज बीडब्ल्यू：4.0मेगाहर्ट्ज
      क्यूपीएसके सीआर：2/3 सैनिक：1/16
      वायु：3.90एमबीपीएस
      VBR：3.05एमबीपीएस एईएस बंद
      एसआईजी1：27 SIG2：22
      ber1：0.14% बेर2：100.00%
      आरईसी ऑफ कोई भंडारण नहीं
   2. आरएफ indicates the center operating frequency, और बीडब्ल्यू indicates the working bandwidth.
      QPSK is the modulation mode, सीआर कन्वेन्शनल कोड दर है, और जीआई गार्ड अंतराल है.
      वायु is the air interface rate
      VBR is the video bitrate, एईएस बंद means no encryption
      एसआईजी1 refers to the received signal strength near the HDMI port antenna, और SIG2 refers to the other antenna.
      Ber1 refers to the BER error rate near the HDMI port antenna, और बेर2 refers to another antenna.
      REC OFF means no video storage
8. When the wireless receiving signal is interrupted or weak, आउटपुट वीडियो स्क्रीन बाधित हो जाएगी (पुनः प्राप्त सिग्नल स्क्रीन स्वचालित रूप से बहाल हो जाएगी), 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. यदि टीएफ कार्ड नहीं डाला गया है, इसे USB फ्लैश ड्राइव में रिकॉर्ड किया जाता है. यदि उन्हें सम्मिलित नहीं किया गया है, उन्हें रिकार्ड नहीं किया जाएगा.
10. लिंक सूचक: 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, वायरलेस बैंडविड्थ, decryption password, वगैरह. Vcan provides a matching parameter configuration panel SconB to facilitate user parameter setting.
14. डेटा सीरियल पोर्ट: पारदर्शी डेटा ट्रांसमिशन सीरियल पोर्ट. The serial port data of the transmitter can be wirelessly transmitted to the receiver and output from the serial port.
15. टीएफ कार्ड इंटरफ़ेस: Used for software upgrade maintenance or for storing video.

टिप्पणी

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 mutual influence and mutual restraint. When the air interface rate is greater than 5 times the video code rate, the video delay is minimum. इस मामले में, the actual test is that the video delay is about 60 milliseconds when the code is transmitted at 720P@60, and the video delay is about 130 milliseconds 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, ट्रांसमिटिंग एंड के फ्रंट-एंड कैमरे की देरी को छोड़कर (we measured the delay of a brand SLR camera at about 70 मिलीसेकंड, and the delay of a famous brand sports camera at about 130 मिलीसेकंड). 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, कार्य आवृत्ति, वायरलेस बैंडविड्थ, and transmitting and receiving antennas. Actual test results: a customer test, unmanned aircraft-mounted ST100 transmitter to fly about 100 meters high, 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, the 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, के बारे में 2.2 meters high on the pole, 2.2 किलोमीटर दूर, high-definition video smooth, a small number 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.

योजक

आकार

75 एक्स 55 एक्स 25 मिमी

RF Performance Test

Operating Center Frequency 470MHz, शक्ति एम्पलीफायर: 1डब्ल्यू

Operating Center Frequency 700MHz, शक्ति एम्पलीफायर: 1डब्ल्यू

उन्नत करना

How to upgrade TX from 720P to 1080P?